Red Sox to sign Aroldis Chapman to fortify bullpen

Aroldis Chapman sported a Red Sox hat with a "Let's go!" caption to confirm on his Instagram that he will be signing with Boston. The hard throwing Cuban born lefty will be 37 years old when Spring Training kicks off and his elite best seasons are behind him.

Chapman was still a key part of the Pirates bullpen last season and will be expected to serve a similar role with Boston this season.