Running back Ahmad Bradshawwill undergo neck surgery and miss the rest of the 2013 season, CBS Sports NFL Insider Jason La Canfora confirms.
ProFootballTalk first reported the news.
Bradshaw was signed by the Colts in June to bolster the running game, and that's exactly what he did, including a 19-carry, 95-yard effort against the 49ers in Week 3. In three games, Bradshaw rushed for 186 yards on 41 carries (4.5 YPC) and scored two touchdowns.
Days before the 49ers game, the Colts traded their 2014 first-round pick for Browns running back Trent Richardson, who is now the team's feature back. In three games, he has 51 carries for 151 yards (3.0 YPC) and two touchdowns.
Interestingly, the Colts' running game was more efficient before Richardson arrived, though coach Chuck Pagano says it's only a matter of time before he busts out.
"(Richardson) is a between-the-tackles, hard-nosed, tough, rugged runner," the coach told NFL.comlast week. "And he's got 4.4 speed. So if he gets to the second level, and happens to break a tackle, he can take it the distance. And that's gonna happen. That'll come. He's a young player still. He's learning, and obviously making the transition coming over from Cleveland, being here now for three weeks."
Donald Brown is the only other back currently on the roster.