A lot of the time, it is the THOUGHT that PED's enhance performance that is most important.
Later in a career, PED's do help little aches and pains get better faster so a player can play up to the MLB professional level longer.
Ryan Braun Brewers
Everth Cabrera Padres
Melky Cabrera Blue Jays
Francisco Cervelli Yankees
Bartolo Colon Athletics
Nelson Cruz Rangers
Fautino de los Santos Free agent
Gio Gonzalez* Nationals
Yasmani Grandal Padres
Fernando Martinez Astros
Jesus Montero Mariners
Jordan Norberto Free agent
Jhonny Peralta Tigers
Cesar Puello** Mets
Alex Rodriguez Yankees