Duffy was placed on the 10-day injured list Tuesday with a lower-back strain, Maddie Lee of NBC Sports Chicago reports.
EDGE Analysis
Originally labeled back tightness, Duffy's condition appears to be more serious than the Cubs initially thought. Having hit .286 in his last 13 games. the 30-year-old has been a reliable option at a number of positions and will be sorely missed while his back heals.