The Reds placed Lively on the 15-day injured list Wednesday with a right pectoral strain.
Lively's pectoral injury could help explain why he allowed 13 earned runs over four innings during Tuesday's blowout loss to the Cubs. The 31-year-old righty will now be sidelined for the next two weeks. Meanwhile Daniel Duarte will come up from Triple-A Louisvile to fill Lively's roster spot.