Simons was selected by the Colorado Rockies in the second round of the 2005 MLB Draft. He spent three and a half seasons in the Rockies’ minor league system before being traded to the Detroit Tigers in exchange for right-hander Jason Grilli.
Simons spent the next two and a half season pitching between the Tigers’ Double- and Triple-A squads before he joined the then Florida Marlins. The 27-year-old went on to rejoin the Rockies for the 2012 season.
While he struggled severely in nine appearances at the Triple-A level, Simons spent most of the year in Double-A where he excelled. Over 33 appearances spanning 46 2/3 innings the right-hander maintained an ERA of 1.93.
Over eight seasons in the minors Simons owns a career ERA of 4.10 with 7.1 strikeouts per nine innings and 4.0 walks per nine innings.