The Pirates placed Borucki on the 15-day injured list Saturday with a lower-back injury, Colin Beazley of the Pittsburgh Post-Gazette reports.

EDGE Analysis

Borucki's back forced him to make an early exit from Friday's contest, and it will now also keep him sidelined for at least the next 15 days. Hunter Stratton was brought up in a corresponding move to replenish the Pirates' bullpen depth.