Rafael Nadal and Sloane Stephens were the defending champions in the men's and women's singles events, however both failed to defend their titles. Nadal retired during his semifinal match against Juan Martín del Potro. Stephens was defeated in the quarterfinals by Anastasija Sevastova, whom Stephens had beaten at the same stage the previous year.
The tournament was an event run by the International Tennis Federation (ITF) and was part of the 2018 ATP World Tour and the 2018 WTA Tour calendars under the Grand Slam category. The tournament consisted of both men's and women's singles and doubles draws as well as a mixed doubles event. There are also singles and doubles events for both boys and girls (players under 18), which are part of the Grade A category of tournaments. Additionally, there are singles and doubles wheelchair tennis events for men, women and quads.
In the United States, the 2018 US Open will be the fourth year in a row under an 11-year, $825 million contract with ESPN, in which the broadcaster holds exclusive rights to the entire tournament and the US Open Series. This means that the tournament is not available on broadcast television. This also makes ESPN the exclusive U.S. broadcaster for three of the four tennis majors.
Point and prize money distribution
Point distribution
Below is a series of tables for each of the competitions showing the ranking points on offer for each event.
Senior
Event
W
F
SF
QF
Round of 16
Round of 32
Round of 64
Round of 128
Q
Q3
Q2
Q1
Men's singles
2000
1200
720
360
180
90
45
10
25
16
8
0
Men's doubles
0
—
—
—
—
—
Women's singles
1300
780
430
240
130
70
10
40
30
20
2
Women's doubles
10
—
—
—
—
—
Wheelchair
Event
W
F
SF/3rd
QF/4th
Singles
800
500
375
100
Doubles
800
500
100
—
Quad singles
800
500
375
100
Quad doubles
800
100
—
—
Event
W
F
SF
QF
Round of 16
Round of 32
Q
Q3
Boys' singles
1000
600
370
200
100
45
30
20
Girls' singles
Boys' doubles
750
450
275
150
75
—
—
—
Girls' doubles
—
—
—
Prize money
The total prize-money compensation for the 2018 US Open is $53 million, a more than 5% increase on the same total last year. Of that total, a record $3.8 million goes to both the men's and women's singles champions, which is increased by 2.7% from last year. This makes the US Open the most lucrative and highest paying tennis grand slam in the world, leapfrogging the French Open in total prize money fund. Prize money for the US Open qualifying tournament is also up 10.3%, to $3.2 million.[1] The prize money for the wheelchair draw amounts to a total of US$350,000. The singles winners of the men and women draws receive US$31,200 and the winner of the quad singles receives US$23,400.[1]
Naomi Osaka defeated Serena Williams in the final, 6–2, 6–4. During the final, Williams received three code violations, the second coming with a point penalty and the third with a game penalty.[2] The issue started during the second set when chair umpireCarlos Ramos cited Serena for a signal that was sent from her coach. Serena said she was unaware of the signal and verbally sparred with Ramos, saying "I don't cheat to win. I'd rather lose." After a mistake later in the second set, Serena smashed her racket into the court. This led to her second code violation, which Serena found out about upon attempting to serve and which increased the dispute between Serena and Ramos. At this point, referring to the first violation for coaching, Serena stated "You owe me an apology. I have never cheated in my life." During the change at the 3–4 mark, a further discussion between Serena and Ramos broke down leading Serena to call Ramos both "a liar" and "a thief" for issuing the point penalty. As both players were concluding the changeover and getting set, Ramos issued Serena her third code violation, this time for verbal abuse.[3]
This led to confusion from both players who did not appear to hear the announcement, which Ramos explained to both after summoning them over to his seat.[4] At this point, US Open referee, Brian Earley, and WTA supervisor, Donna Kelso, were summoned to the court due to the dispute.[5] A four-minute delay occurred due to a discussion between Serena, Earley, and Kelso regarding the issues. After the delay, Serena won the next game before Osaka won the set and match.[6][7][8][9]
The following are the seeded players and notable players who have withdrawn from the event. Seedings are based on ATP and WTA rankings as of August 20, 2018. Rank and points before are as of August 27, 2018.
† Serena Williams was ranked 26 on the day when seeds were announced. Nevertheless, she was deemed a special case and seeded 17th by the organizers because she missed a significant portion of the last 12-month period due to pregnancy and maternity.
‡ The player did not qualify for the tournament in 2017. Accordingly, points for her 16th best result are deducted instead.