Ryan Braun
Braun received a 65-game suspension after he violated MLB’s anti-drug policies. This wasn’t even the worst part of the situation. He lied about his PED abuse and also received the support of high-profile athletes. These included icons like the Green Bay Packers quarterback, Aaron Rodgers.
Many of these stars disassociated themselves from Braun after the truth emerged. He embarrassed them because they stuck their necks out for the player. It was a shambles and he also experienced a lot of criticism from his fellow professionals (via CNBC).