The Cubs’ acquisition Monday of left-hander Drew Pomeranz from the Mariners was the beginning of what’s expected to be the in-season approach to fortifying the bullpen.

When the bullpen became a trouble area early on last season, the Cubs made a series of in-season moves that helped stabilize the group. The front office is once again keeping an active eye on which ar

In his last run in the majors, Pomeranz pitched to a 1.75 ERA in 27 appearances with the San Diego Padres, according to MLB.com.