The Tampa Bay Rays are infamous for their penny-pinching ways. They've been successful in their frugality. However, today they went and signed a ****** pitcher to a 1 year deal worth $3.25M with another $1.85M available via incentives, and they don't even really have room on their staff for him.I'm talking about Fausto Carmona Roberto Hernandez. Back in 2007 he went 19-8 with a 3.07 ERA, that's really good. ERA's since then- 5.44/'08, 6.32/'09, 3.77/'10, 5.25/'11, and 7.53/'12. Aside from 2010, he's been complete crap. For his career he has a 53-69 record with a 4.64 ERA and 1.43 WHIP, all with Cleveland.Not only has Hernandez completely sucked for the past two seasons, he also aged three years last offseason, after it was uncovered that he lied on his birth certificate and wasn't Fausto Carmona, as he was previously known as. So, what the hell were the Rays thinking? What is the purpose of this signing?Their rotation is pretty set with David Price, Matt Moore, Jeremy Hellickson, Jeff Neimann, and Alex Cobb.The bullpen has Joel Peralta, Fernando Rodney, and Jake McGee for sure, so I guess he could slot in there, but $3.25M is a hefty price for a guy that hasn't pitched much in relief during his career and hasn't been effective for the past half decade.