National Football League

Vikings: Cook, Rudolph recovering from concussions

Published Aug. 19, 2012 11:43 p.m. ET

foxsports

Minnesota Vikings cornerback Chris Cook and tight end Kyle Rudolph are recovering from concussions.

Both players were banged up in Friday's preseason game against Buffalo and held out of Sunday's practice as a precaution. Coach Leslie Frazier said they're still in the evaluation phase of their injuries, but that they've passed all of their tests so far.

Running back Adrian Peterson will continue to have his participation ramped up this week, with his rehabilitation from reconstructive surgery on his left knee nearly behind him. Frazier said the team would decide by Tuesday or Wednesday whether he'll play in this week's preseason game against San Diego.

Tight end John Carlson has progressed with his sprained right knee suffered in practice on July 31, but he hasn't been cleared yet to return.