Breaking down Red Sox's acquisition of Brad Ziegler

Brad Ziegler, an extreme ground ball pitcher thanks to a heavy sinker, has a 2.82 ERA and 18 saves in 36 appearances this season. Dustin Bradford/Getty Images

The Boston Red Sox needed late-game relief help anyway, but the rash of injuries that hit their bullpen this week probably led team president Dave Dombrowski and general manager Mike Hazen to decide to act now rather than waiting until closer to the trade deadline.