Roger Federer

The final four young men competing in the U.S. Open over the weekend are all pretty awesome at tennis. And are pretty awesome-looking without shirts.

While two were eliminated from the tournament Sunday (Roger Federer plays Juan Martin del Potro for the title this afternoon) all are in the running here.

Who do you think is hottest? Take a look and vote in the poll below!

There's Juan Martin Del Potro shirtless ...

Or Novak Djokovic shirtless ...

Or Roger Federer shirtless ...

Which tennis star is the hottest?

The world's greatest tennis player ever, Roger Federer, is just like the rest of us (only with more monogrammed outfits): He puts pics of his kids on Facebook!

The first photo of his three-week-old twins, Myla Rose and Charlene Riva, was added to his "wall" this morning. Roger Federer had this to say about them:

"Here is a picture my dad took. He thinks he's becoming a professional photographer. It was funny ... both girls had the hiccups as we were trying to take a decent picture. The girls and mom are doing great. Thanks for all your warm wishes."

Ready? All together now ... AWW!

Myla and Charlene Federer were born July 23 in his native Switzerland. He and wife Mirka (Miroslava Vavrinec) married in April after dating for nine (!) years.

Congratulations to the happy family! But seriously, Roger, you could have let Andy Roddick win Wimbledon just one time. You don't have to be so selfish.

Roger Federer and his wife Mirka (Miroslava Vavrinec) are the proud parents of twin girls, the tennis legend announced early Friday morning on his official site.

Daughters Charlene Riva Federer and Myla Rose Federer arrived late Thursday evening in Switzerland, the 15-time Grand Slam singles champion said joyously.

"This is the greatest day of our lives," the Swiss Roger Federer, 27, said in a statement. "Mirka, Myla and Charlene are all healthy and doing very well."

Roger and Mirka Federer have welcomed a new doubles team!

The couple, who has been together nine years but just tied the knot in April, had announced the pregnancy in March, but never that they were expecting twins.

In fact, word was it was to be a boy, singular.

Earlier this month, Federer defeated Andy Roddick in an epic match to win Wimbledon, his 15th Grand Slam tennis title, surpassing Pete Sampras' record 14. 

Congratulations to the happy new parents!