Norris was called up by the Tigers to start Thursday's game against Seattle.
After beginning the season on the disabled list due to non-displaced fractures in his spinous process, Norris scuffed in April and May, working mostly at Triple-A Toledo. Replacing fellow left-hander Matt Boyd in the rotation, Norris has an opportunity to stick as a starter for the Tigers if he can sustain the momentum he's built up with the MudHens in June (3.33 ERA, 25:9 K:BB in four starts).