Devenski struck out all three batters he faced during Wednesday's 4-2 loss to Kansas City.
In two appearances with the Astros, the 25-year-old right-hander has fanned seven while allowing only one baserunner over four innings. The 25th round draft pick in 2011 hadn't played above Double-A prior to this season, but Devenski could earn a larger role than expected with continued success out of Houston's bullpen.