The Chicago Cubs will promote catching prospect Moisés Ballesteros ahead of Tuesday's game against the Miami Marlins, according to Bruce Levine of 670 The Score. In a corresponding move, the Cubs are expected to place outfielder Ian Happ on the injured list on account of an oblique injury that has sidelined him since May 9.

Chicago Cubs outfielder Ian Happ (oblique) remains out of the team's starting lineup for Monday's series opener against the visiting Miami Marlins at Wrigley Field. Happ is being considered day-to-day with oblique discomfort,

The Cubs ’ usual leadoff hitter, Ian Happ, was out of the lineup. He’d felt some discomfort in his oblique on a swing in his first at-bat Friday, manager Craig Counsell said. Happ remained in the game but checked in with trainers that night.