Moisés Ballesteros couldn't believe it when the Chicago Cubs selected his contract from Triple-A Iowa, and it showed throughout his MLB debut. He went 0-for-4 o

“He’s always been a hitter,” Cubs manager Craig Counsell said. “He’s been the youngest player on his team, still, for his whole career. And he’s always been one of the better hitters, and that’s impressive.

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.