Leon, 26, pitched to a 4.38 ERA in 44 relief appearances for Double-A Corpus Christi in 2012. The key to the acquisition from the Brewers' perspective was that he has a Minor League option remaining.
"He's probably got a chance to make our Triple-A club or our Double-A next year," Brewers general manager Doug Melvin said. "We've seen a good amount of him. [Pro scout] Leon Wurth saw him, [special assistant] Dan O'Brien was familiar with him, and he's always had a good power arm. So we figured we'd try and add him to our inventory."
The Venezuelan-born Leon has pitched parts of eight Minor League seasons with the Astros and owns a 4.40 ERA. He has a very high career walk rate -- 5.2 walks per nine innings pitched -- but his 1.461 WHIP in 2012 was his best mark since his first pro season in the Venezuelan Summer League.