John Isner survived the longest tiebreak of his career to beat Jess Levine 6-4, 7-6 (17-15) on Tuesday in the first round of the Delray Beach International and then admitted he was lucky.
"I'm playing with the house money now," said Isner, America's new Davis Cup hero after a shocking victory over Roger Federer in Switzerland. "The humidity was really starting to get to me, and I am not sure I would have made it through a third set. It was not so much the heat, but after several weeks playing indoors, the humidity was starting to take its toll."
Isner looked back to the US win against the Swiss with pride.
"I felt I could win before I walked on court against Federer," he said. "But it was still a big win for us. From a personal point of view, I haven't kicked on from there and used the confidence it should have given me. I lost early in Memphis and really need to start concentrating on stringing some wins together."
Isner is heading back to Europe over Easter weekend in early Ap...