EDEN PRAIRIE, Minn. -- The Minnesota Vikings won't have cornerback Xavier Rhodes on Sunday in Cincinnati; the rookie will miss his second straight game with a sprained ankle, meaning the Vikings' depleted secondary, which controlled Philadelphia's prolific offense last week, will have to try to do it again to Bengals receiver A.J. Green.

Cornerback Chris Cook should be back from a knee injury that kept him out last week, but Rhodes has been the Vikings' best cover corner in recent weeks, and Cook has struggled at times this season when put on an island against top receivers like Chicago's Alshon Jeffery. Shaun Prater and Marcus Sherels will likely be the corners the Vikings rely on most, other than Cook, and safety Robert Blanton could again see time at cornerback, though he got beat for two touchdowns last week against the Eagles.

Tight end John Carlson is doubtful to play after having recurring post-concussion symptoms this week; coach Leslie Frazier said he hasn't talked with Carlson yet about the possibility of finishing the season on injured reserve, but considering there is only a week left in the season and Carlson has sustained three concussions in the NFL, the Vikings could think about shutting him down for the season.

"We just have to decide what is better for him and what is best for the club and see where he is when we come back and talk again tomorrow and see if he is better," Frazier said.

Here is the Vikings' full injury report: