Roddick celebrated rather emotionally after finishing off No. 3 Andy Murray of Britain 6-4, 4-6, 7-6 (7), 7-6 (5) in Friday's second semifinal. The 2003 U.S. Open champ, seeking a second major title, dropped to his knees, leaned forward and covered his head with his hands.

Leaving the court, Roddick paused to enjoy the moment, thankful that all of the changes he's made over the past several months paid dividends: tweaking his diet to drop 15 pounds, hiring a new coach, working more than ever to improve his returns, his volleys, his backhand.

"To be honest, the last couple of years, I didn't know if I'd ever get a chance to play for another Grand Slam title," Roddick said. "Now I get to. It's just a dream."

This part might cause nightmares before Sunday: Roddick is 2-18 against Federer, including losses in the 2004 and '05 Wimbledon finals, and the '06 U.S. Open final.

"I've had plenty of time to study his game, to understand his game," Federer said. "He's always played me also quite differently every single time."

Then again, Roddick was 2-6 previously against Murray, who was trying to become the first British man to reach the Wimbledon final since the 1930s and, of course, received plenty of partisan support from about 15,000 spectators.

Roddick joked beforehand he'd be pretending that all those shouts of "Come on, Andy!" were for him. But he was outsmarted: Instead of the usual first-name cheers, the crowd yelled support for their man "Murray!"

Didn't matter. Roddick was too good on the most important points and that made the difference on a day Murray compiled more aces (25-21), more winners (76-64) and fewer unforced errors (20-24). Roddick won far more points at the net, 48-15, and put in a far higher percentage of first serves, 75-52, while hitting much harder than Murray, reaching a tournament-high 143 mph.

"If he serves like that," Murray said, "he's got a chance against anyone."

There was only one break point in the first set, and it came with Murray serving while trailing 5-4. Murray went ahead 30-love, but Roddick took the next four points, showing off some of the newfound versatility in his game. He got to break point with a drop-shot winner on a 10-stroke exchange. And he ended the set with a booming backhand down the line that forced Murray into a forehand error on the point's 17th stroke.

The stands were close to silent, and it was clear Murray needed to do something to get the fans — and himself — going. He did just that, breaking Roddick at love to open the second set, then holding with the help of three aces in a row to go up 2-0.

After serving out that set, Murray was on the verge of beginning the third the exact same way. But Roddick saved three break points to hold for 1-0.

"You're probably not going to get out of a love-40 hole too often against a guy who returns like him," Roddick said. "So that was definitely key."