According to farm director John Vuch, the organization projects that Martinez will be able to return to the mound in approximately two weeks. Vuch called the decision to DL the 20-year-old Martinez more of "a precaution than anything serious."
Martinez felt soreness during his May 14 start for Palm Beach, and the Cardinals want to ensure that he doesn't compromise mechanics by pitching through that soreness. That outing was the least effective of Martinez's seven this season. He allowed five runs (four earned) on eight hits and a walk in four innings.
On the season, Martinez is 2-2 with a 3.00 ERA. He has walked 10 and struck out 34 in 33 innings. If he returns as expected, Martinez will lose only about three starts.