CHICAGO -- Cubs left fielder Ian Happ was placed on the 10-day injured list with a left oblique strain on Tuesday, with the team calling up hot-hitting prospect Moises Ballesteros to take his place on the roster.
Happ, 30, injured himself on a swing in New York on Friday. He finished the game but hasn't played since. He went through a workout Monday, but the team decided to slow down his recovery, expecting minimal missed time.
"He got through it but was a little cautious, essentially," manager Craig Counsell said Tuesday.