This Sunday, the world’s top 8 men will meet in London to compete for the 2011 Barclays ATP World Tour title. The guys will go head to head during a week of intense matchplay, starting with two round robin groups.

Among the top contenders—Armani underwear model Rafael Nadal. Sure, Federer may have taken home the ATP title on five occasions, but have you seen Rafa’s commercials? If only boxer briefs were appropriate tennis wear…

But those muscles aren’t just for show. Rafa’s aggressive style of play is powerful and super physical. His hard work on the court leads to wins—and shirt changes.

Not only does he have abs to spare, he’s also got that accent. And who doesn’t love a barely understandable Spanish accent?

A great personality is the icing on this sexy Spanish torta (that’s “cake” in Spanish). In interviews, Rafa comes off as soft-spoken and humble. Could that be because English isn’t his first language? Sure, but I’d like to think he’s just the kind of guy you can take home to mom—a room full of trophies doesn’t hurt either.

Win or lose, Rafa’s got my vote for sexiest man on the tour. But the longer he stays in, the more we get to see him take his shirt off. Let’s hope it’s hot in London (Vamos!).

Who do you think is the sexiest male tennis player? Click to vote!