The Chicago Cubs have one of the best outlooks in baseball, but they got a huge assist from the New York Mets a few years ago.

The Cubs are calling up intriguing prospect Moisés Ballesteros to replace injured outfielder Ian Happ, and Eric Samulski explains why the catcher/first baseman brings major offensive potential to Chicago.

Of course, that doesn't mean Webb is likely to be the next man up for the Rangers – Chris Martin has been the team's best high-leverage reliever this season, but he had already pitched in a setup role before Jackson exited Monday.

The Cubs dipped into this depth last week, calling up right-hander Cade Horton with Shota Imanaga landing on the injured list. They're now primed to do so again.