Not long ago, Roberto Hernandez was considered to be an up-and-coming starter for the Cleveland Indians. He was also known as Fausto Carmona. But regardless of what it said across his back, his 3.06 ERA (3.94 FIP), 1.21 WHIP, and his 64% ground ball rate produced 19 wins for the Indians in 2007, and his value was almost four wins above replacement level. He even garnered votes for the American League Cy Young award, finishing fourth overall.
Hernandez battled injuries and serious control problems the following two seasons, put together a solid 2010 campaign, then the wheels kind of fell off. And the axle broke.