Matt Leinart
As the 10th overall pick in the 2006 NFL draft, Leinart signed a six-year, $50.8 million contract with $14 million guaranteed. After he did nothing but win games and championships at USC, the Cardinals assumed they were giving that money to their franchise quarterback. Unfortunately for the Cardinals, Leinart only started 17 games in his four seasons in Arizona.
Leinart took the money but forgot that he was supposed to perform on the field. He spent far too much of his time enjoying his celebrity status instead of focusing on being a professional quarterback. Leinart went 7-10 in his 17 starts, completing 57% of his passes with 14 touchdowns and 20 interceptions. After a year each with Houston and Oakland, appearing in just four games, Leinart was out of the NFL.