This year Grigor Dimitrov is experiencing his most successful season since starting to play professionally.

In the late match of the first round, Sharapova’s boyfriend made seven direct service shots, 37 winning shots, and successfully took advantage of five out of 13 break opportunities, while only making 19 self-errors.

Dimitrov is considered someone who can cause a surprise at this year’s tournament.

Harrison, currently ranked only 184 in the world, fought back very fiercely, especially in the second set.

`I’m very happy to have my first victory at the US Open, because this is my favorite Grand Slam tournament. This year I played more matches and that helped me become more confident at tournaments.`

Also on the final day of the first round of men’s singles, Czech sixth seed Tomas Berdych defeated 33-year-old veteran Lleyton Hewitt of Australia with a score of 6-3, 6-4, 6-3.

Meanwhile, No. 14 seed Marin Cilic of Croatia did not lose much effort in the first round.

In the final match of day three, it took third seed Stanislas Wawrinka more than two and a half hours to win four sets in the second round against Thomaz Bellucci of Brazil with a score of 6-3, 6-4, 3.

Wawrinka needs stability to advance in the US Open.

The defending Australian Open champion quickly won the first two sets, but then faced fierce resistance from an opponent currently ranked only 92nd in the world.

`In the first two sets I played very fiercely and kept close to the net to attack whenever possible. I tried to regain focus after losing my rhythm and losing the third set, but anyone would have had a hard time.`