Josh Koscheck has jumped ship.
The former UFC pay-per-view headliner and The Ultimate Fighter 1 alum has signed with Bellator MMA, it was announced Friday night at Bellator 139.
Koscheck (17-10), one of the biggest "villains" in MMA history, has lost five in a row, the latest against Erick Silva via first-round submission in March. He has not won since a split decision victory over Mike Pierce in 2012.
However, there was a time when Koscheck, 37, was one of the best welterweights in the world. He fought Georges St-Pierre for the UFC 170-pound title in 2010 and owns wins over Matt Hughes, Anthony Johnson and Diego Sanchez.
Koscheck is the second former UFC star to sign with Bellator in recent months. Phil Davis penned a deal with the Viacom-owned organization in April.