(DETROIT) – A pair of Detroit Lions starters left the team's preseason game Friday night with injuries. Starting middle linebacker Jarrad Davis was carted to the locker room with a right foot injury during the first drive, before center Frank Ragnow was helped off the field in the second quarter with a right leg injury. Following the Lions' loss to Buffalo 24-20, coach Matt Patricia says both men will be re-evaluated today. Davis is scheduled to undergo an MRI on the foot Saturday. He appeared to suffer the injury at the end of a 9-yard run by Bills back LeSean McCoy when Lions teammate Devon Kennard appeared to roll up on Davis' leg. Davis fell to the ground clutching his right leg; he tried to get up and get to the sideline on his own but couldn't put any pressure on the leg. Midway through the second quarter, Ragnow, 23, injured his right leg and was examined on the turf for a few minutes before being helped off the field. He initially could not put weight on his right leg before trying to gingerly test it as he went directly to the locker room for further examination. Ragnow, Detroit's first-round pick last year, is expected to be the team's starting center in 2019. If his injury were to be serious, the Lions would likely shift Graham Glasgow, their center last season, back to the position from right guard.