The US Open 2017 - Grand Slam Tennis - Official Site by IBM

Naomi Osaka shook off some bad memories to make a brilliant new one--a big win over defending women's champ Angelique Kerber

Five former US Open champions headline Wednesday’s action in New York in what’s sure to be an action-packed Day 3 in the Big Apple.

Rafael Nadal shook off a slow start to defeat Dusan Lajovic, 7-6, 6-2, 6-2, Tuesday in Arthur Ashe Stadium.

Naomi Osaka bounced back from the disappointment of losing a 5-1 third-set lead over Madison Keys in the third round of last year's US Open to stun defending champion Angelique Kerber in this year's opening round, 6-3, 6-1, inside Arthur Ashe Stadium on Tuesday.

In a stunning upset, Japan’s Naomi Osaka ousted 2016 defending US Open champion Angelique Kerber, 6-3, 6-1.

No. 12 seed Jelena Ostapenko battled through a three-set tussle with Spaniard Lara Arruabarrena to reach the second round.

Women's top seed Karolina Pliskova dropped just three games in her first-round match to Magda Linette of Poland, winning 6-2, 6-1, in 78 minutes.

The best quotes from Day 1 at the US Open.

Cinco jugadores que han sido campeones del US Open buscan dar el primer paso hacia un nuevo titulo, en lo que sigue la primera ronda durante el día 2 del US Open 2017.

Alexander "Sascha" Zverev, a 20-year-old German, has never been as far as the quarterfinals in a major. His best performance at the US Open was last year's 2nd-round exit.

Maria Sharapova ousted Simona Halep in the most dramatic match of a topsy-turvy Day 1 at the 2017 US Open.

2006 women's singles champion Maria Sharapova, currently No. 146 in the rankings, stunned No. 2 seed Simona Halep in the first evening match in Arthur Ashe Stadium.

Tennis writer Matt Cronin makes his Day 2 selections for the 2017 US Open.

The US Open set an all-time Opening Day attendance record on Monday, with a combined 61,839 fans passing through the gates of the USTA Billie Jean King National Tennis Center.

Aussie Jordan Thompson shocked an out-of-sorts Jack Sock, 6-2, 7-6, 1-6, 5-7, 6-4, in Louis Armstrong Stadium, as the sun set and day turned to night on the opening day of the US Open.

Rafael Nadal, Roger Federer, Juan Martin del Potro, Svetlana Kuznetsova and defending women’s champ Angelique Kerber all see action today. Those former champs share the day’s marquee with a highly heralded group of contenders, including women’s top seed Karolina Pliskova, Elena Svitolina, Jelena Ostapenko, Grigor Dimitrov and Dominic Thiem.

Surprise 2009 US Open quarterfinalist Melanie Oudin retired after dealing with a series of health issues.

Caroline Wozniacki defeated Mihaela Buzarnescu, 6-1, 7-5, for her 100th victory in a Grand Slam main draw.

Roger Federer. Rafael Nadal. Arthur Ashe Stadium. 2017 US Open. Need we say more?