Brewers place Marco Estrada on DL (hamstring), recall Tyler Thornburg

The Brewers just announced a pair of roster moves, one that's not surprising and one that I didn't see coming.

First, the obvious decision: Marco Estrada is heading to the DL with a hamstring strain. The team had previously reported that they expected him to miss a start with the injury, so it's not all that surprising that they've decided to clear up his roster spot for a couple of weeks.

His spot will go to 24-year-old prospect Tyler Thornburg, though, and that's not what many of us were probably expecting. Thornburg has struggled mightily in AAA this season, posting a 6.75 ERA over 12 starts. He has a career 3.45 mark and 10.3 strikeouts per nine innings in the minors, though.

Thornburg has had an especially rough go of it lately, posting an 8.04 ERA over seven starts since May 1. He last pitched for Nashville on Saturday. allowing six runs (four earned) on eight hits over five innings against Round Rock.

Last night we suspected that Jimmy Nelson may be getting the call up to the big leagues. He's getting promoted, but not that far: He'll take Thornburg's place with Nashville after a 12-start stint in AA where he had a 2.74 ERA and 9.4 strikeouts per nine innings.