The Giants placed Hentges (shoulder/knee) on the 15-day injured list Wednesday, Justice delos Santos of The San Jose Mercury News reports.
The left-hander is working his way back from surgeries on his left shoulder and right knee, and he's not ready for the start of the regular season. Hentges progressed to facing live batters late in spring training, so he could be ready for a rehab assignment in the near future.