Vikings declare Bradford out vs. Lions, turn to Keenum again

Minnesota Vikings quarterback Case Keenum (7) throws a pass during the second half against the Tampa Bay Buccaneers in Minneapolis. (Jim Mone/AP)

EDEN PRAIRIE, Minn. — Minnesota Vikings quarterback Sam Bradford has been ruled out of the game again this week because of lingering soreness in his left knee, meaning Case Keenum will make his third straight start.

Bradford hasn’t practiced with the team for a week. After his latest absence from the field on Thursday, coach Mike Zimmer said again that surgery is not needed for Bradford, only rest. Zimmer said he doesn’t think Bradford’s injury will be a long-term concern.

"Day to day," he said. "I don’t know what day to day is. Just day to day."

Minnesota (2-1) hosts Detroit (2-1) on Sunday.

Bradford was declared out shortly before kickoff on Sept. 17 at Pittsburgh, then two days before the most recent game against Tampa Bay when he travelled to seek a second medical opinion on the knee.

This time, the Vikings served a three-day notice that Keenum will lead the offence. He turned in a career-best performance as the Vikings beat the Buccaneers 34-17 .

Starting right tackle Mike Remmers also missed practice on Thursday, because of an illness.