White, 24, was the 15th overall selection in the first round of the June 2009 draft and was Cleveland’s no. 2 prospect, as ranked by Baseball America, as recently as the 2011 season. He split his 2012 season with Colorado and Triple A Colorado Springs, making 23 appearances (20 starts) at the Major League level. While with Colorado Springs, he went 3-4 with a 3.71 ERA (25ER/60.2IP), while allowing a .238 opponent’s batting average. The 2013 season will be just his fourth year as a professional.
Gillingham, 22, went 6-8 with a complete game and a 3.66 ERA (50ER/123IP) in 19 starts at Class A Asheville of the South Atlantic League this season. A former 11th-round draft pick in 2011 out of the University of Loyola Marymount, Gillingham made his professional debut in 2011 for Rookie League Caspar and was the only pitcher in the Pioneer League to toss a perfect game that season.
Lopez, 29, went 6-3 with 10 saves and a 2.17 ERA (16ER/66.1IP) in 64 relief appearances for Houston this season. He’s pitched in each of the last four seasons (2009-12) with the Astros, appearing in 213 games in his Major League career. The right-handed reliever was originally acquired by Houston as a waiver claim from San Diego in April of 2009.
White is placed on the Astros 40-man roster, which remains at 37 after the move.