The Cubs plan to start swingman Colin Rea on Saturday against the Brewers, manager David Ross said after Friday's game.
Alec Mills was originally slated to pitch Saturday but was bumped up to Friday because Tyler Chatwood was scratched with mid-back tightness. The Cubs will evaluate Chatwood to see if he's an option to pitch on Monday, when they're scheduled to play a doubleheader against the Cardinals.
Rea, 30, has made two appearances this season, allowing no runs and one hit while striking out three in three innings. He was named the 2019 Pacific Coast League Pitcher of the Year, sporting a 3.95 ERA in 26 starts.
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Rea's last big league start was July 30, 2016 with the Marlins. He allowed one hit in 3 1/3 scoreless innings, striking out four with no walks.