Rashaad Penny retires with a 5.6 yards-per-carry average in an injury-plagued career
by ProFootball Talk on NBC Sports from NFL News, Scores, Fantasy Games and Highlights 2020 | Yahoo Sports on (#6PNAB)
Here's a trivia question few fans will get right: Among running backs with at least 300 carries, who has the highest yards-per-carry average in NFL history?