Adrian Mutu
Some soccer players party too hard and pay the consequences of their actions. Mutu was a great example because he ruined his Premier League career. Chelsea thought that they had made a coup when they signed the Romanian. But then he tested positive for cocaine and received a massive suspension (via Daily Star).

Chelsea fired him because he violated the terms of his contract. They also sued their former player for millions of dollars in damages. Mutu also received another suspension during his time in Italy with Fiorentina. The seedy superstar tested positive for drugs again because he couldn’t stay clean.