John Isner had little trouble Tuesday in his opening round match with former NCAA champion and fellow American Marcos Giron, winning in straight sets 7-6, 6-2, 7-6.
The top American on the men's side of the bracket has been battling a sprained ankle, which led to his withdrawal from the Winston-Salem Open last week. He showed few ill effects Tuesday, however, advancing to the second round in New York.
It wasn't a cake walk, though. Giron, a UCLA product, jumped ahead 4-2 in the first set before Isner stormed back, winning the first set in a tiebreaker. He cruised through the second, before Giron again offered resistance in the third set, but Isner again won in a tiebreak, again.
As is his custom, Isner leaned on his serve, doling out 24 aces to Giron's seven. Giron was also undone by unforced errors; he had 24 to Isner's 17.
Isner, the tournament's No. 13 seed, will play the winner of Mikhail Kukushkin and Jan-Lennard Struff in the second round.