Born: Rocourt, Belgium
Profile: Goffin broke out at last year's French Open, where he stole a set against Federer. What the 150-pound Goffin lacks in brute force, he makes up for in speed, agility, and court coverage.
Favorite shot: Two-hand backhand down the line.
What opponents fear: "I'm fast, and I move well. I don't need big muscles to hit hard. If I take the ball early, I make the game."
Best compliment: "I saw John McEnroe in the locker room of the U.S. Open after a match, and he said, 'Hey, I love your game. Just work on your legs' – because my legs were too thin. I was really happy to hear that."