Colts running back Donald Brown is averaging 7.8 yards per carry and has hit the holes quicker than Trent Richardson. But Brown gets so few touches, he's not worth starting Week 7 against Denver.
Indy has given Brown 15 carries in four games since Richardson arrived. If Richardson (3.2 yards per carry) continues to flounder and this becomes more of an even timeshare, Brown would become a regular flex option.
Keep Brown stashed for now and see if the Colts lose patience with Richardson.