| 2020 US Open | |
|---|---|
| Date | August 31 – September 13 |
| Edition | 140th |
| Category | Grand Slam (ITF) |
| Draw | 128 singles players, 32 doubles pairs |
| Prize money | US$53,402,000 |
| Surface | Hard |
| Location | New York City, United States |
| Venue | USTA Billie Jean King National Tennis Center |
| Champions | |
| Men's singles | |
 Dominic Thiem | |
| Women's singles | |
 Naomi Osaka | |
| Men's doubles | |
 Mate Pavić /  Bruno Soares | |
| Women's doubles | |
 Laura Siegemund /  Vera Zvonareva | |
| Wheelchair men's singles | |
| Shingo Kunieda | |
| Wheelchair women's singles | |
 Diede de Groot | |
| Wheelchair quad singles | |
| Sam Schröder | |
| Wheelchair men's doubles | |
 Alfie Hewett / Gordon Reid | |
| Wheelchair women's doubles | |
| Yui Kamiji / Jordanne Whiley | |
| Wheelchair quad doubles | |
 Dylan Alcott / Andy Lapthorne | |
The 2020 US Open was the 140th edition of tennis's US Open and the second Grand Slam event of the year. It was held on outdoor hard courts at the USTA Billie Jean King National Tennis Center in Queens, New York. The tournament was an event run by the International Tennis Federation (ITF) and was part of the calendars for the 2020 ATP Tour and the 2020 WTA Tour, the top professional men's and women's tennis circuits, respectively.
Held during the COVID-19 pandemic, the tournament saw changes in format and personnel compared to previous editions. As a result, withdrawals and opt-outs became a theme of the competition. Defending men's singles champion and world No. 2 Rafael Nadal and No. 9 Gaël Monfils withdrew due to COVID-19 safety concerns, while No. 4 Roger Federer, No. 12 Fabio Fognini, and No. 15 Stan Wawrinka opted out for other reasons. On the women's side, defending singles champion and world No. 6 Bianca Andreescu did not return due to safety concerns, nor did No. 1 Ashleigh Barty, No. 2 Simona Halep, or No. 5 Elina Svitolina, among others. Further, the qualifying rounds of the tournament, in addition to the mixed doubles and juniors draws, were not held due to the pandemic.
Men's singles world No. 1 Novak Djokovic made headlines by becoming the first top-seeded player to be disqualified from a Grand Slam singles tournament when he was defaulted from his fourth-round match for hitting a ball out of frustration that inadvertently hit a line judge in the throat. Although accidental, Djokovic's actions were deemed to be in violation of a Grand Slam rule regarding ball abuse, and he was disqualified from the tournament.
Dominic Thiem won the men's singles title for his first Grand Slam title. He became the first new Grand Slam men's singles champion since 2014 with his five-set defeat of first-time Grand Slam finalist Alexander Zverev. The women's singles competition was won by Naomi Osaka, who defeated Victoria Azarenka in three sets to capture her second US Open title and third Grand Slam title overall. Osaka arrived to the final wearing a black face mask bearing the name of Tamir Rice, a 12-year-old African-American boy shot to death in Cleveland in November 2014. The tournament took place during the George Floyd protests, and Osaka wore similar masks for each of her other six matches, each with a different name of a Black American who died as a result of unjust violence from police or other citizens in the United States.