Cubs lose rookie RHP Cade Horton to rib injury

(Photo credit: Charles LeClaire-Imagn Images)

The Chicago Cubs placed rookie right-hander Cade Horton on the 15-day injured list on Saturday with a fractured right rib.

The timing is terrible for the playoff-bound Cubs, with Horton's earliest potential return coming during the National League Championship Series -- should they advance that far.

Horton, 24, vaulted into the NL Rookie of the Year pictur