The Reds placed Lodolo on the 15-day injured list Tuesday with a left middle finger sprain.
It's not clear how long Lodolo's finger has been bothering him, but it's worth noting he holds a 9.75 ERA over his last five starts. The left-hander will be eligible to return on Sept. 8, although it's uncertain at this point whether he has a shot to be back by that time. Jakob Junis is sliding into the rotation in Lodolo's place.