The Chicago Cubs have promoted catching prospect Moisés Ballesteros for his MLB debut. Ballesteros is hitting seventh as the DH in Tuesday's game against the Miami Marlins. In a corresponding move, the Cubs have placed outfielder Ian Happ on the injured list on account of an oblique injury that has sidelined him since May 9.

Moises Ballesteros is one of the most precocious and gifted hitting prospects in the game, yet he also presents something of a development dilemma.

The Chicago Cubs called up their top hitting prospect, finally assembling a roster akin to their fabled 2015 team.

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 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.

With the Chicago Cubs calling up their No. 4 prospect, Moises Ballesteros, here are some of his highlights from the minor leagues to showcase his impressive skills with the bat. The 21-year-old Ballesteros is making a case as one of the best hitting ...

One of the top prospects in the system is about to get closer to his dream with a golden opportunity to finally make it come true.