UPDATE: On Saturday morning, the Vikings upgraded tight end Kyle Rudolph to questionable for Sunday's game against the Bengals. He was originally listed doubtful Friday due to an injured ankle that kept him from practicing this week.

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The Vikings appear likely to be down to two tight ends Sunday against the Bengals.

Starter Kyle Rudolph was unable to practice Friday, marking his third missed practice this week due to an ankle injury suffered in Carolina. He's listed doubtful to play against the Bengals. Earlier today, tight end Blake Bell was placed on injured reserve with a shoulder injury.

Tight ends David Morgan and Kyle Carter, promoted from the practice squad on Friday morning, were the only two at practice again on Friday.

Left tackle Riley Reiff (ankle) donned a helmet again and rejoined the offensive line in position drills on Friday, however backup Rashod Hill also took snaps alongside left guard Nick Easton. Reiff is listed doubtful to play Sunday, so expect Hill to start at left tackle.

Right tackle Mike Remmers will return after missing the last five games due to a concussion and lower back injury. He was a full participant in Friday's practice. Center Pat Elflein (shoulder) will also return after sitting out last week.

Cornerback Mackensie Alexander (chest) is the only Vikings player officially ruled out, however Rudolph and Reiff are not expected to play. Expect a bigger role for Terence Newman as the nickel corner.