Who hit the more amazing shot: Roger Federer or Rafael Nadal?

We'll have more on the hotly anticipated Australian Open semifinal between Roger Federer-Rafael Nadal on Wednesday. Until then, enjoy two spectacular shots the respective champions hit in their quarterfinal wins and help us decide which was more impressive: Nadal's point was won on sheer athleticism. He starts the return from the other side of the court, runs across it in the time it takes Tomas Berdych to rifle a forehand, somehow gets there and still has the composure, strength and accuracy to blast a forehand winner down the line. (And he did that while taking an awkward, mid-swing kick step.) The real-time replay shows off Nadal's footwork and speed. The slow motion displays his precision and control. Federer's shot is indescribable. What is that? A backhand slice drop shot? A blop shot? Look at the way the ball dies on the court when it bounces. If Fed had been playing on Hisense Arena, you'd have thought he hit a dead spot. It's sublime. If I had t...