New York (AP): On a muggy night, Rafael Nadal said he felt dehydrated, and that's why his level of play dropped for about a set.
"I had some problems. I was sweating a lot," Nadal said after beating 18-year-old Borna Coric in four sets in the U.S. Open's first round.
Nadal said he "had a little bit of (a) stomach problem" and wasn't "physically perfect," which is why he lost the third set, before feeling stronger in the fourth.
"I recovered (a) little bit. I played, again, more aggressive," Nadal added.
He said he doesn't think it was a big deal and shouldn't affect him Wednesday in the second round against Diego Schwartzman.
