The first day of the US Open witnessed the women's defending champion, Samantha Stosur steamroll past her unseeded Croatian opponent, Petra Martic 6-1, 6-1 in just 51 minutes in an amazing display of power tennis to book a spot in the 2nd round and in the process, firmly stamped her position as a legitimate contender for the title at this year's Open. Also proceeding to round 2 was the 2011 French Open champion and the 9th seed, Li Na who was given a bit more of a work out by her British opponent, Heather Watson but managed to pass through unscathed using her superior groundstrokes and serve to brush aside the challenge of her opponent. However, the 16th seed, an out of sorts Sabine Lisicki did not enjoy the fortunes of her fellow seeds, bowing out of this year's final Grand Slam against her Romanian opponent, Sorana Cirstea, 4-6 6-2 6-2 to become the first seeded casualty at this year's Open.
First up on Arthur Ashe Stadium was the defending champion, Samantha Stosur who started dominating proceedings right from the outset against her unheralded opponent using her vicious serve and powerful groundstrokes to extremely good effect. The domination started reaching new heights as the Australian raced to a 5-0 lead for the loss of just 2 points, leaving the crowd awestruck and mesmerized. Martic finally made the scorekeepers work, putting a halt to the breaking spree of the Australian after a rather protracted game, which she managed to scrape through to force the Australian to serve for the set. Stosur did just that, slamming two more aces en route to bag the first set in just 22 minutes. Even though, the Serbian managed to offer slightly more resistance in the second set, she could do nothing to derail the "Australian Express" off her unnerving rhythm as the defending campion continued to dictate the tempo from the back of the court, keeping her opponent constantly on the run. The 7th seed also appeared to have taken her serve to another level, raking up aces at whim, hitting a total of 10 to storm her way towards the 2nd round of the year's last Grand Slam. The final score was 6-1, 6-1 in the Australian's favor.