Kerryon Johnson was ruled out during Sunday’s bout against the Minnesota Vikings with a reported knee injury. ESPN’s Adam Schefter reported on Monday that Kerryon is expected to miss a couple of weeks. Ty Johnson led the backfield in snaps on Sunday and will be this weeks top RB waiver add. JD McKissic, who was slightly more efficient with his touches than Ty, is a speculative add in deeper formats and for RB needy owners in PPR leagues. If Kerryon’s injury is longer than 1-2 weeks, don’t be surprised to see the Lions make an acquisition at the running back position. Jay Ajayi and LeGarrette Blount are names to watch, unless the Lions make a trade with another NFL team. Both Ajayi and Blount have had workouts for other NFL teams in recent weeks. Either would be worth a bench stash if acquired. Kerryon and the Lions running game has underwhelmed this season, tied for the 11th worst in the league in yards per rush attempts (3.8) and 14th worst in yards per game. Unless you own Kerryon or have huge holes at the RB position, I would not waste top waiver priority position OR blow my FAAB money. We know Ty Johnson is expected to take over the #1 spot, but there is too much uncertainty. The Lions could make an acquisition or decide to treat the backfield like a true RBBC with McKissic, until Kerryon returns.