Sunday 13 September 2015 19:11, UK
Roger Federer says he has his flawless serving to thank for his serene progress to the US Open final as he prepares to face Novak Djokovic at Flushing Meadows.
The five-time US Open champion is relishing the challenge of facing world No 1 Djokovic for the 42nd time, and believes the strength of his serve is key to his hopes of securing an 18th Grand Slam title.
"What's it been now? Six years I haven't been in the final? Sounds like a big deal," Federer said. "Not that long ago, my opinion.
"It's been a great tournament so far. I've tried very hard the last six years to get back in another final."
Federer brushed aside Swiss compatriot Stan Wawrinka 6-4 6-3 6-1 in the last four and has reached the final without dropping a set. The second seed has been broken just twice in 81 service games.
"It's definitely very good. Maybe my best, I'm not sure," he said.
"I'm serving very well, playing positive tennis, going for my shots and it seems to work. I'd love it to work just one more time this year."
The win for Federer improved his head-to-head record against Wawrinka to 17-3, while also avenging his defeat in the quarter-finals of this year's French Open.
Wawrinka might have had some trouble adapting to the evening conditions after his previous daytime match in the main stadium, but that was the least of his problems.
"Conditions were a little bit different than when I played my match here on Ashe," Wawrinka said. "It's a little bit more flying in the night. It's playing really fast. I didn't play my best game.
"But basically it's him, the way he's playing.
"He's trying to play really aggressive, really fast. The way he's playing he's reading better, moving better, so everything is going faster."
Watch the US Open men's singles final on Sky Sports 1 HD from 8.30pm on Sunday night. Not a Sky subscriber? Then watch through online streaming service NOW TV.
By purchasing a Sky Sports Day Pass for £6.99 or Sky Sports Week Pass for £10.99, you can enjoy access to all seven Sky Sports channels and watch on a TV with a NOW TV Box or on a range of devices.