Sport: Baseball
Criminal History: Attempted murder
Time Behind Bars: Currently serving a 14-year sentence

Ugueth Urbina was one of the league's most accomplished closers and due to make a ton of money in free agency. That is, until he made the worst off season move since Baltimore's signing of Albert Belle.

Suspecting that one of his laborers had stolen a gun from him, Urbina and a group of friends allegedly gathered the workers, tied them up, and poured paint thinner on the men before burning them and cutting their hands with machetes. Don't mess with Ugueth's shit, for real. In 2007, Urbina was sentenced to 14 years in a Venezuelan prison.