South Bend leads the TinCaps 2-1 after six innings Thursday at Parkview Field.
After getting no-hit through 4 2/3 innings by Blake Perry of the Silver Hawks, Alberth Martinez broke through with an RBI double in the fifth to cut the deficit to 2-1.
The SilverHawks went up 2-0 in the fourth on an RBI single by Ronnie Freeman that scored Fidel Pena, who had walked and stolen second.
In his second rehab assignment outing, Fort Wayne starter Adys Portillo went 3 2/3 innings and gave up two runs (one unearned). He allowed four hits and struck out five with one walk.
Perry went five innings, giving up just the one hit and one earned run. He struck out three, walked four and hit two batters.