The Reds also sent reliever Jake Buchanan, who had a 8.16 ERA in five appearances to Louisville.
Replacing Wojciechowski and Buchanan on the roster are catcher Stuart Turner, who had been on the disabled list since May 20 with a hamstring injury, and pitcher Lisalverto Bonilla, who will provide bullpen depth.
Wojciechowski is one of five pitchers to make at least four starts with the Reds this season and post an ERA over 6.00. The others are: Amir Garrett (3-5, 6.91); Bronson Arroyo (3-5, 7.01); Bonilla (1-3, 7.43); and Rookie Davis (1-2, 7.58).
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Losing Wojciechowski means the Reds have a decision to make about their starting rotation. His next start would have been Friday against the Nationals in Washington.
All eyes will be on Homer Bailey on Monday when continues his rehab assignment by starting for Louisville, though the earliest he could start for the Reds would be Saturday.
“We’ll wait and see what happens with Homer,” Price said. “We’ll also take a look at what our options are for our first game in D.C. That will not be Homer.”