If you were thinking lately that Milwaukee's bullpen was a bit too tall, this should come as some very good news to you. John Fay of the Cincinnati Enquirer recently tweeted that Herrera had been claimed off waivers, and BP's Kevin Goldstein has since added that the Brewers appear to the club making the claim.
Herrera, 26, is a soft-tossing left-handed relief pitcher that's spent all of 2011 with Cincinnati's Triple-A club. But the most interesting thing about Herrera is his build; at 5-foot-6, he's one of the shortest players in the game. The lefty spent parts of the past three seasons with the Reds, posting a 3.62 ERA with slightly worse peripherals in 92 innings. He has a substantial platoon split, though: he has a 3.12 FIP against left-handed hitters, and a 4.80 FIP against right-handed hitters.
As for the Brewers, it's not surprising that they made this move given that they currently don't have a lefty in the bullpen. With Manny Parra, Zack Braddock and Mitch Stetter on the disabled list, Herrera gives them another relatively cheap option.