Ballesteros went 0-for-4 in his debut, but there's always tomorrow. "The nerves got the better of me today," he said through an interpreter.

The Cubs plan to promote the organization’s No. 4 prospect Moises Ballesteros to the majors, with left fielder Ian Happ headed for the 10-day injured list with an oblique injury, a source confirmed. They will also have to make a move to clear a spot on the 40-man roster.