I'm talking about mixing things up, innovating, trying special shots, etc. I would say Federer hands down. In his prime he had every shot in the book, and he invented some too. He was great from the baseline, the net, could hit drop shots, lobs, slice, smash, backhand smash (the best I've ever seen), and some impossibe returns of smashes. He had fantastic angles and the prettiest inside-out forehand I've ever seen. Of course, I'm a Fed fan but I'd like to hear you opinions. *Please do not turn this into another useless Federer/Nadal thread, write you opinion and explain it. Thanks.