The latest development for the Cubs is a calf injury to veteran right-hander Jameson Taillon sustained while running in a bullpen session, which Craig Counsell says is going to keep him out for at least a month.

Chicago Cubs pitcher Jameson Taillon is expected to miss "more than a month" with a right calf strain, manager Craig Counsell told reporters on Friday.

The veteran right-hander strained his right calf while running Thursday, casting an even brighter spotlight on what Jed Hoyer's front office can do to bolster the rotation ahead of the trade deadline.