The Brewers have designated Danny Ray Herrera for a assignment, reports Tom Haudricourt of The Journal Sentinel (on Twitter). He was called up just yesterday.
Herrera, 26, pitched both yesterday and today. He gave up a homerun to Kosuke Fukudome and recorded two outs yesterday, and tonight he gave up four runs in an inning of work against the Red Sox. Herrera was claimed off waivers from the Reds just a few weeks ago, and the lefty's big league career consisted of a 3.69 ERA with 6.4 K/9 and 3.2 BB/9 in 92 2/3 innings coming into today.