Rhodes is questionable and Alexander is doubtful for Vikings against 49ers

Mark J. Rebilas, USA Today Sports Images

Xavier Rhodes is questionable after being a full participating in Friday's practice

EAGAN, Minn. -- Cornerback could be an area of concern for the Minnesota Vikings due to injuries ahead of Sunday's season-opener against the San Francisco 49ers.

Minnesota declared center Pat Elflein out as he recovers from offseason ankle and shoulder surgeries. Elflein returned to practice this week but wasn't expected to play against San Francisco with just a week of practice. Brett Jones is expected to start in his place at center.

Starting cornerback Xavier Rhodes was limited for two days with a hamstring injury but was a full participant in Friday's practice and is listed as questionable. Mackensie Alexander, expected to be the Vikings' first choice as the nickel back, missed Wednesday's practice. He was limited for the past two days and is listed as doubtful.

The NFL's rules state:

Out Will not play

Doubtful Unlikely to play

Questionable Uncertain if player will play

Backup offensive tackle Aviante Collins (elbow) and backup running back Roc Thomas (ankle) are also listed out by Minnesota. Starting left tackle Riley Reiff (foot) and returner/cornerback Marcus Sherels (hamstring) are expected to play after being limited earlier in the week.