Let's build up a list here. I don't watch anything else than hockey so I wouldn't know who the best athlete for each sport is.
This list is for current best players, not all time best.
I know it's subjective, but go by popular opinion. Stay unbiased.

So I'll start
Hockey: Sidney Crosby

Hockey: Tyler Seguin
Basketball: Rajon Rondo
Football: Tom Brady
Baseball: Adrian Gonzalez

Golf - Luke Donald world number one for 29 straight weeks

Hockey: Sidney Crosby
Golf: Luke Donald

Not sure if trolling...

Shouldn't matter because +/- doesn't count on pp + pk..

amidoinitrite?

Bryce Harper!

But not really. Although if we're going with Rajon Rondo...
And Sidney has too many injuries to be best athlete

Doesn't matter, he's the most dominating hockey player on the ice and this until he retires.

iso serious answers.

This post was edited by jimmym007 on Dec 12 2011 10:53pm

Football: Tebow (Guy elevates his whole team to a whole another level, plays best when the pressure is on.)
Hockey: Tough call, plenty of tough guys. I like Zetterberg (Most consistent player out imo, or Datsyuk).
Basketball: Rose or Lebron (I hate Lebron, but guy is nothing but PURE talent).

Only three sports I follow besides baseball in playoffs.

NBA: Lebron James
NFL: Aaron Rodgers
NHL: Sidney Crosby