Sept. 5 (UPI) -- Notre Dame could be without its starting running back for up to two months after Jafar Armstrong sustained a groin/abdominal muscle injury during the team's season-opening win at Louisville.
Sources told The Athletic and ESPN about Armstrong's injury timeline after the running back had an MRI onTuesday. The Athletic reported that a five-week absence is an optimistic timeline for Armstrong's return.
"Every great warrior must learn to endure and overcome the adversities of life," Armstrong tweeted Wednesday.
Armstrong had 72 carries for 383 yards and seven scores in 10 games in 2017. The junior had two carries for 10 yards and a 16-yard reception before leaving in the first quarter of Sunday's win at Louisville.
Notre Dame junior Tony Jones Jr. had 15 carries for 110 yards and a score in relief of Armstrong against the Cardinals. Sophomore Jahmir Smith scored two rushing touchdowns against Louisville.
Armstrong missed three games last season due to a knee injury.
Notre Dame hosts New Mexico at 2:30 p.m. EDT Sept. 14 at Notre Dame Stadium.