"Micah will compete for a spot on our staff," said executive vice president/general manager Josh Byrnes. "He is a proven contributor as a starter and as a reliever. Micah's character and versatility made him a priority for us as we looked to add depth to our pitching staff."
Owings finished the 2011 campaign perfect, going 8-0 and compiling a career- best 3.57 earned run average in 33 games (four starts) for Arizona.
A third-round draft pick in 2005, Owings has played five seasons with the Diamondbacks (2007-08, 2011) and Reds (2009-10), appearing in 132 games (68 starts) with a 32-31 record and a 4.91 ERA.
The Tulane graduate is also known for his prowess at the plate, where he boasts a .286 career average with nine home runs and 35 RBI in 203 at-bats.