This. Yes, the Sox have a dominant bullpen, but they still need more strong arms. It also seems like every game they are playing in is a close game where they need to use their big 3 of Tazawa, Uehara, and Bailey at least once throughout every game. With Uehara's injury history and current age, he is bound to get tired or injured throughout this year at some point. It's very important for Hanrahan to come back strong. Otherwise, our bullpen might be in trouble if one guy goes down.