Adys Portillo is the starter for the TinCaps on Thursday against Cedar Rapids. Fort Wayne has a season-high five-game winning streak.
Portillo is 1-9 with a 6.83 ERA. He gave up three runs in 6 2/3 innings in his last outing July 14 at Burlington.
Infielder Tyler Stubblefield, who played two games for San Diego's Triple-A team Tucson during the series last weekend at Parkview Field, returned to Fort Wayne's roster Wednesday.