The Boston Red Sox bullpen has been great this season. The unit has consistently kept the Red Sox in games and held leads, and is a big factor in their postseason contention. The Sox are no strangers to a good reliever season, but Whitlock's is certainly up there with some of the best non-closer seasons in recent memory. No other non-closer (and most closers) have had a season that good in a Red Sox uniform. 8 - Junichi Tazawa, 2012Tazawa was dominant for the 2012 Red Sox.