We sadly live in an age where seemingly every sport is full of cheaters, thugs and criminals. However, there are still some guys who play the game right and yet still excel. In your opinion, which player from each of the major sports would most devastate their league and fanbase if they were found guilty of steroids/ cheating/ etc?

My list:

MLB Mike Trout
NFL: JJ Watt
NBA: Steph Curry
NHL: Steve Stamkos
NASCAR: Dale Jr.

Opinions?