Roger Federer of Switzerland (L) holds his winners trophy and Andy Roddick of the U.S. holds his runners-up plate after their Gentlemen's Singles finals match at the Wimbledon tennis championships in London, July 5, 2009. REUTERS/Toby Melville

Roger Federer won his 15th Grand Slam title, breaking Pete Sampras's record of 14 Grand Slam titles.

The 27-year-old claimed his 15th after winning a marathon Wimbledon final against Andy Roddick on Sunday.

The Swiss tennis player prevailed in the longest Grand Slam final in men's history, turning back a determined challenge by American Andy Roddick, 5-7, 7-6 (6), 7-6 (5), 3-6, 16-14.

It's staggering that I've been able to play so well for so many years, staying injury free, said Federer, according to BBC.

For me to be the player I am now, I'm surprised. I didn't expect it. I never thought I could be this consistent.

Sampras made his first visit to Wimbledon since 2002 to watch Federer break the mark he had only set in 2003.

Roger's a friend, he's a great player, he's a good guy, said Sampras, who won seven Wimbledon titles, one more than Federer's current tally.

He can get 17 or 18 majors. If he just keeps it going and stays healthy, he could go to 18, 19, actually. The guy's a legend and now he's an icon. He's a credit to the game.