Tuesday open thread: What should the Lions do at running back?

Photo by Steven King/Icon Sportswire via Getty ImagesThe Detroit Lions got some bad news on Monday when it was revealed that running back Kerryon Johnson will likely miss time. His knee injury, considered week-to-week for now, is a big blow to the second-year’s already struggling season. Now the Lions will be left with a big hole in the backfield, and they have plenty of questions with how to fill it.

As in stands, the Lions have three running backs on their roster: rookie Ty Johnson, pass catcher J.D. McKissic, and newly-signed Tra Carson. Ty Johnson saw a majority of the snaps after Kerryon Johnson left, though he had limited success on the ground. He turned 10 carries into just 29 yards…