2018 Caroline Wozniacki tennis season

Caroline Wozniacki practicing at the 2018 Australian Open
Full name	Caroline Wozniacki
Country	Denmark
Calendar prize money	$6,657,719
Singles
Season record	41–17
Calendar titles	3
Year-end ranking	No. 3
Ranking change from previous year
Grand Slam & significant results
Australian Open	W
French Open	4R
Wimbledon	2R
US Open	2R
Championships	RR
Injuries
Injuries	Right leg injury[1] Left knee injury[2]
Last updated on: 5 November 2018.

The 2018 Caroline Wozniacki tennis season officially began on 1 January 2018 with the start of the 2018 WTA Tour. Caroline Wozniacki entered the season ranked as world number 3 behind Simona Halep and Garbiñe Muguruza following the completion of the 2017 season.

Wozniacki began her season at the Auckland Open. She was the top seed and advanced to the final after successfully defeating Madison Brengle, Petra Martić, Sofia Kenin and Sachia Vickery. However, she would be defeated in straight sets by the same opponent who eliminated her in the previous year's quarterfinals, Julia Görges, in straight sets.^[3]

Her next tournament was the Australian Open. She was seeded second, her highest seeding since the 2012 Australian Open. She defeated Mihaela Buzărnescu in straight sets before going on to beat Jana Fett in three sets after saving two match points.^[4] She then beat Kiki Bertens and Magdaléna Rybáriková both in straight sets to reach the quarterfinals. In the quarterfinals, she beat Carla Suárez Navarro in three sets to advance to her second Australian Open semifinal since 2011. In the semifinals she beat Elise Mertens to advance to her third Grand Slam final and her first since 2014.^[5]

Her last opponent was Simona Halep. Wozniacki took the opening set in a tiebreak, while Halep winning the second set.^[6] The third set had the most breaks of serve. After a series of breaks, Wozniacki won two points in a row to reach championship point. Wozniacki won the point, the match and the championship, after Halep hit a backhand into the net to become the seventh woman to win the title after being match point down in Open Era.^[7][8]

After winning her first Grand Slam title, she regained the world No. 1 ranking on 29 January 2018.^[7] Wozniacki was last ranked No. 1 on 29 January 2012, exactly 6 years ago, and her new ascension beats Serena Williams' previous record of 5 years 29 days.^[9]

Wozniacki's next tournament was the St. Petersburg Ladies' Trophy, which she entered in the second round. She defeated the young Russian, Anastasia Potapova, in straight sets before she lost to Daria Kasatkina in the quarterfinals.^[10]

Wozniacki then played in the Qatar Open, where she received a bye in the first round. She defeated Carina Witthöft with a bagel in the second set. The Australian Open champion put together a dominant performance and needed just 57 minutes to record the victory.^[11] She then defeated Monica Niculescu in straight sets to extend her head-to-head advantage to 9–0 over the Romanian.^[12] Her next opponent was former world No. 1, Angelique Kerber. Kerber got out to a fast start but the first set went to a tiebreak and ended in Wozniacki's favour. Kerber easily won set two. The third set was a marathon of long rallies but Wozniacki won in a gruelling two hours and 20 minutes.^[13] Against Petra Kvitová, Wozniacki wasn't so lucky. She lost, despite having two chances to serve for the match.^[14] However, with her Qatar performance, she became only the fourth player in WTA history to surpass $30,000,000 in career prize earnings.

Wozniacki then played the Indian Wells Open, where she received a bye in the first round. She defeated Lara Arruabarrena and Aliaksandra Sasnovich, in straight sets and three sets respectively before she lost to Daria Kasatkina again in the fourth round.^[15]

Wozniacki then entered the Miami Open, where she also received a bye in the first round. However, she lost to the Summer Olympics champion Monica Puig in three sets after sending a bagel in the opening set.^[16]

Wozniacki started her 2018 clay season in the İstanbul Cup, where she defeated Ekaterina Alexandrova and Sara Errani in straight sets and three sets respectively. However, she chose to retire from the event against the eventual winner Pauline Parmentier in the quarterfinals.^[17]

Wozniacki then played the Madrid Open.^[18] She defeated two Australians, Daria Gavrilova and Ashleigh Barty, and advanced into the third round. However, she lost to the eventual runner-up Kiki Bertens, who was defeated in the Australian Open, in straight sets.^[19]

Wozniacki's next tournament was the Italian Open, where she received a bye in the first round. She defeated Alison Van Uytvanck in straight sets in the second round and Anastasija Sevastova in three sets in the third round respectively before she lost to Anett Kontaveit in straight sets in the quarterfinals.^[20]

In the French Open, Wozniacki was the 2nd seed. In the first round, she defeated Danielle Collins after the opening-set tiebreak.^[21] In the second round, she easily defeated the Spanish qualifier Georgina García Pérez in just fifty minutes.^[22] Her opponent in the third round was the local people Pauline Parmentier, who just defeated Caroline couple of weeks ago on the way to her first WTA title since 2008. Wozniacki defeated the Frenchwoman in straight sets after sending a bagel in the opening set.^[23] Her next opponent was the 14th seed Daria Kasatkina, who defeated Wozniacki twice this year. Wozniacki eventually lost to the Russian in straight sets again after the match delayed to Monday.^[24]

Wozniacki started her 2018 grass season in the Eastbourne International, where she was the runner-up last year. She started her competition in the second round, where she defeated Camila Giorgi.^[25] In the third round, she defeated Johanna Konta for the first time in her career, in three sets.^[26] After defeating Ashleigh Barty in straight sets, she reached the semi-finals for the fifth time in six years.^[27] She successfully defeated Angelique Kerber in three sets after saving a match point to advance into final.^[28] Her final opponent of the tournament was Aryna Sabalenka and the match was their first meet.^[29] Eventually, the Dane defeated the Byelorussian to win her second title of the year, and her 29th overall. The final also marked her 600th career match win.^[30]

Wozniacki then played in the Wimbledon Championships, where she was seeded second. In the first round, she successfully defeated Varvara Lepchenko after sending a bagel.^[31] However, she lost to Ekaterina Makarova, who defeated Wozniacki in the US Open also in the second round last year, in three sets despite saving five match points.^[32]

Wozniacki was scheduled to participate in the Washington Open, where she was supposed to be the top seed, but she was forced to retired before her first-round match against Anhelina Kalinina due to a right leg injury.^[1]

After the retirement in Washington, she then participated in the Canadian Open, where she received a bye in the first round. Her first opponent was Aryna Sabalenka, who was defeated in the final of Eastbourne in straight sets. However, this time she lost to the Belarusian in three sets after wasting three match points.^[33]

At Cincinnati, Wozniacki retired against the eventual winner Kiki Bertens in her first match of the tournament after losing the opening set because of a left knee injury.^[2]

In the US Open, Wozniacki defeated former champion Samantha Stosur in straight sets before she lost to Lesia Tsurenko in the second round.^[34]

In fall, Wozniacki played the Pan Pacific Open, where she was the top seed, by receiving a wildcard as the defending champion. However, she lost to Camila Giorgi in three sets in the second round.^[35]

A week later, in Wuhan, Wozniacki was upset by Monica Puig for the second time this season in straight sets in third round after defeated qualifier Rebecca Peterson.^[36]

Wozniacki then played the China Open. In the first round, she defeated Belinda Bencic, who had a small advantage on head-to-head, in straight sets.^[37] Then she defeated Petra Martić for the second time this year in straight sets.^[38] In the third round, She successfully defeated Anett Kontaveit, who defeated the Dann at Montreal in straight sets.^[39] In the semifinals, she upset local favourite Wang Qiang in straight sets.^[40] In the final, she successfully held off Anastasija Sevastova to win the China Open title for the second time in her career without losing a set.^[41] This was also her first Premier Mandatory level title since winning the 2011 BNP Paribas Open and her 30th WTA title.^[42]

After reaching the quarterfinals in Beijing in her last tournament, Wozniacki became the fifth player to secure Singapore spot.^[43] As the second seed, she led the White Group, alongside Petra Kvitová, Elina Svitolina and Karolína Plíšková.^[44] However, her road to defend her title didn't start very well. In her first round robin match, she lost to World No. 7 Karolína Plíšková in straight sets after saving two match points.^[45] She then defeated Petra Kvitová in three sets before was upset by Elina Svitolina.^[46] The outcome made her finished third in the group, which meant she was unable to advance into the semifinals.^[47]

After eliminating in the round robin, Wozniacki announced that she was diagnosed with Rheumatoid arthritis, but would like to become a role model for people with the condition.^[48] Nevertheless, she still finished the season as World No. 3.

Tournament	Match	Round	Opponent	Rank	Result	Score
Auckland Open Auckland, New Zealand WTA International Hard, outdoor 1–7 January 2018	1	1R	Madison Brengle	85	Win	6–3, 6–0
	2	2R	Petra Martić	90	Win	6–2, 6–2
	3	QF	Sofia Kenin (WC)	108	Win	4–6, 6–2, 6–4
	4	SF	Sachia Vickery (Q)	122	Win	6–4, 6–4
	5	F	Julia Görges (2)	14	Loss (1)	4–6, 6–7(2–7)
Australian Open Melbourne, Australia Grand Slam Hard, outdoor 15–28 January 2018	6	1R	Mihaela Buzărnescu	44	Win	6–2, 6–3
	7	2R	Jana Fett	119	Win	3–6, 6–2, 7–5
	8	3R	Kiki Bertens (30)	32	Win	6–4, 6–3
	9	4R	Magdaléna Rybáriková (19)	21	Win	6–3, 6–0
	10	QF	Carla Suárez Navarro	39	Win	6–0, 6–7(3–7), 6–2
	11	SF	Elise Mertens	37	Win	6–3, 7–6(7–2)
	12	W	Simona Halep (1)	1	Win (1)	7–6(7–2), 3–6, 6–4
St. Petersburg Ladies' Trophy Saint Petersburg, Russia WTA Premier Hard, indoor 29 January – 4 February 2018	–	1R	Bye
	13	2R	Anastasia Potapova (WC)	235	Win	6–0, 6–1
	14	QF	Daria Kasatkina (8)	23	Loss	6–7(2–7), 3–6
Qatar Open Doha, Qatar WTA Premier 5 Hard, outdoor 12–17 February 2018	–	1R	Bye
	15	2R	Carina Witthöft	52	Win	6–2, 6–0
	16	3R	Monica Niculescu (Q)	92	Win	7–5, 6–1
	17	QF	Angelique Kerber (8)	9	Win	7–6(7–4), 1–6, 6–3
	18	SF	Petra Kvitová (16)	21	Loss	6–3, 6–7(3–7), 5–7
Indian Wells Open Indian Wells, United States WTA Premier Mandatory Hard, outdoor 5–18 March 2018	–	1R	Bye
	19	2R	Lara Arruabarrena (Q)	80	Win	6–4, 6–1
	20	3R	Aliaksandra Sasnovich	49	Win	6–4, 2–6, 6–3
	21	4R	Daria Kasatkina (20)	19	Loss	4–6, 5–7
Miami Open Miami, United States WTA Premier Mandatory Hard, outdoor 19 March – 1 April 2018	–	1R	Bye
	22	2R	Monica Puig	82	Loss	6–0, 4–6, 4–6
İstanbul Cup Istanbul, Turkey WTA International Clay, outdoor 23–29 April 2018	23	1R	Ekaterina Alexandrova	82	Win	6–2, 6–2
	24	2R	Sara Errani	93	Win	5–7, 6–3, 6–3
	25	QF	Pauline Parmentier	122	Loss	6–4, 3–6 retired
Madrid Open Madrid, Spain WTA Premier Mandatory Clay, outdoor 7–13 May 2018	26	1R	Daria Gavrilova	24	Win	6–3, 6–1
	27	2R	Ashleigh Barty	18	Win	6–2, 4–6, 6–4
	28	3R	Kiki Bertens	20	Loss	2–6, 2–6
Italian Open Rome, Italy WTA Premier 5 Clay, outdoor 14–20 May 2018	–	1R	Bye
	29	2R	Alison Van Uytvanck	49	Win	6–4, 6–1
	30	3R	Anastasija Sevastova (15)	20	Win	6–2, 5–7, 6–3
	31	QF	Anett Kontaveit	23	Loss	3–6, 1–6
French Open Paris, France Grand Slam Clay, outdoor 27 May –10 June 2018	32	1R	Danielle Collins	41	Win	7–6(7–2), 6–1
	33	2R	Georgina García Pérez (Q)	186	Win	6–1, 6–0
	34	3R	Pauline Parmentier (WC)	74	Win	6–0, 6–3
	35	4R	Daria Kasatkina (14)	14	Loss	6–7(5–7), 3–6
Eastbourne International Eastbourne, United Kingdom WTA Premier Grass, indoor 24–30 June 2018	–	1R	Bye
	36	2R	Camila Giorgi	56	Win	6–2, 6–3
	37	3R	Johanna Konta (13)	22	Win	4–6, 6–1, 6–4
	38	QF	Ashleigh Barty (8)	17	Win	6–4, 6–3
	39	SF	Angelique Kerber (4)	11	Win	2–6, 7–6(7–4), 6–4
	40	W	Aryna Sabalenka	45	Win (2)	7–5, 7–6(7–5)
Wimbledon Championships London, United Kingdom Grand Slam Grass, outdoor 2 –15 July 2018	41	1R	Varvara Lepchenko	97	Win	6–0, 6–3
	42	2R	Ekaterina Makarova	35	Loss	4–6, 6–1, 5–7
Washington Open Washington, D.C., United States WTA International Hard, outdoor 30 July –5 August 2018	–	1R	Anhelina Kalinina (Q)	143	Withdrew	N/A
Canadian Open Montreal, Canada WTA Premier 5 Hard, outdoor 6–12 August 2018	–	1R	Bye
	43	2R	Aryna Sabalenka	39	Loss	7–5, 2–6, 6–7(4–7)
Cincinnati Open Cincinnati, United States WTA Premier 5 Hard, outdoor 13–19 August 2018	–	1R	Bye
	44	2R	Kiki Bertens	17	Loss	4–6 retired
U.S. Open New York City, United States Grand Slam Hard, outdoor 27 August – 9 September 2018	45	1R	Samantha Stosur	64	Win	6–3, 6–2
	46	2R	Lesia Tsurenko	36	Loss	4–6, 2–6
Pan Pacific Open Tokyo, Japan WTA Premier Hard, indoor 17–23 September 2018	–	1R	Bye
	47	2R	Camila Giorgi	37	Loss	2–6, 6–2, 4–6
Wuhan Open Wuhan, China WTA Premier 5 Hard, outdoor 23–29 September 2018	–	1R	Bye
	48	2R	Rebecca Peterson (Q)	61	Win	6–4, 6–1
	49	3R	Monica Puig (Q)	51	Loss	6–7(10–12), 5–7
China Open Beijing, China WTA Premier Mandatory Hard, outdoor 1–7 October 2018	50	1R	Belinda Bencic	42	Win	6–2, 6–3
	51	2R	Petra Martić	37	Win	7–5, 6–3
	52	3R	Anett Kontaveit	21	Win	7–5, 6–4
	53	QF	Kateřina Siniaková (Q)	40	Win	6–2, 6–2
	54	SF	Wang Qiang (WC)	28	Win	6–1, 6–3
	55	W	Anastasija Sevastova	20	Win (3)	6–3, 6–3
WTA Finals Kallang, Singapore Year-end championships Hard, indoor 21–28 October 2018	56	RR	Karolína Plíšková (7)	8	Loss	2–6, 4–6
	57	RR	Petra Kvitová (4)	5	Win	7–5, 3–6, 6–2
	58	RR	Elina Svitolina (6)	7	Loss	7–5, 5–7, 3–6

Wozniacki's 2018 singles tournament schedule is as follows:

Date	Tournament	Location	Category	Surface	2017 result	2017 points	2018 points	Result
1 January – 7 January	Auckland Open	New Zealand	International	Hard	QF	60	180	Final lost to Julia Görges 4–6, 6–7(2–7)
15 January – 28 January	Australian Open	Australia	Grand Slam	Hard	3R	130	2000	Winner defeated Simona Halep 7–6(7–2), 3–6, 6–4
29 January – 4 February	St. Petersburg Ladies' Trophy	Russia	Premier	Hard (i)	DNP	0	100	Quarterfinals lost to Daria Kasatkina 6–7(2–7), 3–6
12 February – 17 February	Qatar Open	Qatar	Premier 5[a]	Hard	F	305	350	Semifinals lost to Petra Kvitová 6–3, 6–7(3–7), 5–7
5 March – 18 March	Indian Wells Open	United States	Premier Mandatory	Hard	QF	215	120	Fourth round lost to Daria Kasatkina 4–6, 5–7
19 March – 1 April	Miami Open	United States	Premier Mandatory	Hard	F	650	10	Second round lost to Monica Puig 6–0, 4–6, 4–6
23 April – 29 April	İstanbul Cup	Turkey	International	Clay	DNP	0	60	Quarterfinals lost to Pauline Parmentier 6–4, 3–6 retired
7 May – 13 May	Madrid Open	Spain	Premier Mandatory	Clay	2R	65	120	Third round lost to Kiki Bertens 2–6, 2–6
14 May – 20 May	Italian Open	Italy	Premier 5	Clay	DNP	0	190	Quarterfinals lost to Anett Kontaveit 3–6, 1–6
27 May – 10 June	French Open	France	Grand Slam	Clay	QF	430	240	Fourth round lost to Daria Kasatkina 6–7(5–7), 3–6
24 June – 30 June	Eastbourne International	United Kingdom	Premier	Grass	F	305	470	Winner defeated Aryna Sabalenka 7–5, 7–6(7–5)
2 July – 15 July	Wimbledon Championships	United Kingdom	Grand Slam	Grass	4R	240	70	Second round lost to Ekaterina Makarova 4–6, 6–1, 5–7
30 July – 5 August	Washington Open	United States	International	Hard	DNP	0	0	Withdrew due to leg injury
6 August – 12 August	Canadian Open	Canada	Premier 5	Hard	F	585	1	Second round lost to Aryna Sabalenka 7–5, 2–6, 6–7(4–7)
13 August – 19 August	Cincinnati Open	United States	Premier 5	Hard	QF	190	1	Second round lost to Kiki Bertens 4–6 retired
27 August – 9 September	U.S. Open	United States	Grand Slam	Hard	2R	70	70	Second round lost to Lesia Tsurenko 4–6, 2–6
17 September – 23 September	Pan Pacific Open	Japan	Premier	Hard (i)	W	470	1	Second round lost to Camila Giorgi 2–6, 6–2, 4–6
13 August – 19 August	Wuhan Open	China	Premier 5	Hard	2R	1	105	Third round lost to Monica Puig 6–7(10–12), 5–7
1 October – 7 October	China Open	China	Premier Mandatory	Hard	3R	120	1000	Winner defeated Anastasija Sevastova 6–3, 6–3
21 October – 28 October	WTA Finals	Singapore	Year-end Championships	Hard (i)	W	1375	500	Failed to advance into the semifinals 1 won & 2 losses
Road to Singapore points						4640	5086	446 difference
Total year-end points						6015	5586	429 difference

Players are ordered by letter.

Player	Rank	Tournament	Surface	Date	W/L	W–L	CWR
Aliaksandra Sasnovich	49	Indian Wells Masters, Indian Wells, United States	Hard	March 2, 2018	Win	1–0	2
Alison Van Uytvanck	49	Italian Open, Rome, Italy	Clay	May 15, 2018	Win	1–0	2
Anastasia Potapova	235	St. Petersburg Ladies' Trophy, Saint Petersburg, Russia	Hard (i)	February 1, 2018	Win	1–0	1
Anastasija Sevastova	20	Italian Open, Rome, Italy	Clay	May 16, 2018	Win	2–0	2
	20	China Open, Beijing, China	Hard	October 7, 2018	Win		2
Anett Kontaveit	23	Italian Open, Rome, Italy	Clay	May 18, 2018	Loss	1–1	2
	21	China Open, Beijing, China	Hard	October 4, 2018	Win		2
Angelique Kerber	9	Qatar Open, Doha, Qatar	Hard	February 16, 2018	Win	2–0	1
	11	Eastbourne International, Eastbourne, United Kingdom	Grass	June 29, 2018	Win		2
Aryna Sabalenka	45	Eastbourne International, Eastbourne, United Kingdom	Grass	June 30, 2018	Win	1–1	2
	39	Canadian Open, Toronto, Canada	Hard	August 9, 2018	Loss		2
Ashleigh Barty	18	Mutua Madrid Open, Madrid, Spain	Clay	May 7, 2018	Win	2–0	2
	17	Eastbourne International, Eastbourne, United Kingdom	Grass	June 28, 2018	Win		2
Belinda Bencic	42	China Open, Beijing, China	Hard	October 1, 2018	Win	1–0	2
Camila Giorgi	56	Eastbourne International, Eastbourne, United Kingdom	Grass	June 25, 2018	Win	1–1	2
	37	Pan Pacific Open, Tokyo, Japan	Hard (i)	September 20, 2018	Loss		2
Carla Suárez Navarro	39	Australian Open, Melbourne, Australia	Hard	January 23, 2018	Win	1–0	2
Danielle Collins	41	French Open, Paris, France	Clay	May 28, 2018	Win	1–0	2
Daria Gavrilova	24	Mutua Madrid Open, Madrid, Spain	Clay	May 6, 2018	Win	1–0	2
Daria Kasatkina	23	St. Petersburg Ladies' Trophy, Saint Petersburg, Russia	Hard (i)	February 2, 2018	Loss	0–3	1
	19	Indian Wells Masters, Indian Wells, United States	Hard	March 14, 2018	Loss		2
	14	French Open, Paris, France	Clay	June 4, 2018[b]	Loss		2
Ekaterina Alexandrova	82	İstanbul Cup, Istanbul, Turkey	Clay	April 24, 2018	Win	1–0	2
Ekaterina Makarova	35	Wimbledon Championships, London, United Kingdom	Grass	July 4, 2018	Loss	0–1	2
Elina Svitolina	7	WTA Finals, Kallang, Singapore	Hard (i)	October 25, 2018	Loss	0–1	3
Elise Mertens	37	Australian Open, Melbourne, Australia	Hard	January 25, 2018	Win	1–0	2
Georgina García Pérez	186	French Open, Paris, France	Clay	May 30, 2018	Win	1–0	2
Jana Fett	119	Australian Open, Melbourne, Australia	Hard	January 17, 2018	Win	1–0	2
Johanna Konta	22	Eastbourne International, Eastbourne, United Kingdom	Grass	June 27, 2018	Win	1–0	2
Julia Görges	14	Auckland Open, Auckland, New Zealand	Hard	January 7, 2018	Loss	0–1	3
Kateřina Siniaková	40	China Open, Beijing, China	Hard	October 5, 2018	Win	1–0	2
Karolína Plíšková	8	WTA Finals, Kallang, Singapore	Hard (i)	October 21, 2018	Loss	0–1	2
Kiki Bertens	32	Australian Open, Melbourne, Australia	Hard	January 19, 2018	Win	1–2	2
	20	Mutua Madrid Open, Madrid, Spain	Clay	May 9, 2018	Loss		2
	17	Cincinnati Open, Cincinnati, United States	Hard	August 15, 2018	Loss		2
Lara Arruabarrena	80	Indian Wells Masters, Indian Wells, United States	Hard	March 3, 2018	Win	1–0	2
Lesia Tsurenko	36	U.S. Open, New York City, United States	Hard	August 30, 2018	Win	0–1	2
Madison Brengle	85	Auckland Open, Auckland, New Zealand	Hard	January 2, 2018	Win	1–0	3
Magdaléna Rybáriková	21	Australian Open, Melbourne, Australia	Hard	January 21, 2018	Win	1–0	2
Mihaela Buzărnescu	44	Australian Open, Melbourne, Australia	Hard	January 15, 2018	Win	1–0	2
Monica Niculescu	92	Qatar Open, Doha, Qatar	Hard	February 15, 2018	Win	1–0	1
Monica Puig	82	Miami Open, Miami, United States	Hard	March 24, 2018	Loss	0–2	2
	51	Wuhan Open, Wuhan, China	Hard	September 26, 2018	Loss		2
Pauline Parmentier	122	İstanbul Cup, Istanbul, Turkey	Clay	April 27, 2018	Loss	1–1	2
	74	French Open, Paris, France	Clay	June 1, 2018	Win		2
Petra Kvitová	21	Qatar Open, Doha, Qatar	Hard	February 17, 2018	Loss	1–1	1
	5	WTA Finals, Kallang, Singapore	Hard (i)	October 23, 2018	Win		3
Petra Martić	90	Auckland Open, Auckland, New Zealand	Hard	January 3, 2018	Win	2–0	3
	37	China Open, Beijing, China	Hard	October 3, 2018	Win		2
Rebecca Peterson	61	Wuhan Open, Wuhan, China	Hard	September 25, 2018	Win	1–0	2
Sachia Vickery	122	Auckland Open, Auckland, New Zealand	Hard	January 6, 2018	Win	1–0	3
Samantha Stosur	64	U.S. Open, New York City, United States	Hard	August 28, 2018	Win	1–0	2
Sara Errani	93	İstanbul Cup, Istanbul, Turkey	Clay	April 26, 2018	Win	1–0	2
Simona Halep	1	Australian Open, Melbourne, Australia	Hard	January 27, 2018	Win	1–0	2
Sofia Kenin	108	Auckland Open, Auckland, New Zealand	Hard	January 6, 2018	Win	1–0	3
Varvara Lepchenko	97	Wimbledon Championships, London, United Kingdom	Grass	July 2, 2018	Win	1–0	2
Wang Qiang	28	China Open, Beijing, China	Hard	October 6, 2018	Win	1–0	2

#	Player	Rank	Tournament	Surface	Round	Score	CWR
1.	Simona Halep	1	Australian Open, Melbourne, Australia	Hard	Final	7–6(7–2), 3–6, 6–4	2
2.	Angelique Kerber	9	Qatar Open, Doha, Qatar	Hard	Quarterfinals	7–6(7–4), 1–6, 6–3	1
3.	Petra Kvitová	5	WTA Finals, Kallang, Singapore	Hard (i)	Round robin	7–5, 3–6, 6–2	3

Singles: 4 (3 titles, 1 runner-up)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Jan 2018	Auckland Open, New Zealand	International	Hard	Julia Görges	4–6, 6–7(4–7)
Win	1–1	Jan 2018	Australian Open, Australia	Grand Slam	Hard	Simona Halep	7–6(7–2), 3–6, 6–4
Win	2–1	Jun 2018	Eastbourne International, United Kingdom	Premier	Grass	Aryna Sabalenka	7–5, 7–6(7–5)
Win	3–1	Oct 2018	China Open, China	Premier M	Hard	Anastasija Sevastova	6–3, 6–3

The tournaments won by Wozniacki are in boldface.

Wikimedia Commons has media related to Caroline Wozniacki in 2018.

• Official website
• Caroline Wozniacki at the Women's Tennis Association
• Caroline Wozniacki at the International Tennis Federation
• Caroline Wozniacki at the Fed Cup
• Caroline Wozniacki on IMDb
• Caroline Wozniacki at the International Olympic Committee
• Caroline Wozniacki at Olympics at Sports-Reference.com