Petty will pitch in bulk relief behind opening pitcher Brent Suter against the Guardians on Saturday, Charlie Goldsmith of the Dayton Daily News reports.
Petty's first two major-league starts haven't quite gone according to plan, as he's allowed 13 earned runs in just 5.1 innings. The Reds will now see how the 22-year-old fares after following an opener, and he could continue to do so in his future turns through the rotation if his performance improves.