Roddick through to Atlanta final
Andy Roddick will face Gilles Muller in the final of the Atlanta Open after defeating John Isner 6-4 6-7 (5-7) 6-4 in the last four.
The American duo are good friends off the court and will join forces at the London Olympics in the quest for gold in the men's doubles event.
However, on Saturday night they were on opposite sides of the net in a tussle of the big servers, with Roddick taking the first set with his only break point opportunity.
Neither man could make an impression on the other's serve during the second set before the tie break, Isner eventually edging it with a powerful couple of forehands to force a decider.
Having smashed his racket after losing the second set, Roddick regained his composure to break Isner with the third set poised at 4-5 before serving out the match.
Roddick will now face Muller in the final of the ATP Tour event after the Luxembourg competitor beat Go Soeda in Saturday's other semi-final.
"I'm excited. I have a chance to win my second tournament in three tournaments," Roddick said.
He added of Isner: "I'm going to be real happy to be on the same side with that serve in the Olympics. He's probably the best tie-break player in the world right now. You've got to stay the course a little bit."