Vikings QB Sam Bradford Underwent MRI On Left Knee This Week

Vikings, Steelers looking for legitimacy and a 2-0 start

Until an official announcement by the team is made, though, it should be assumed that Bradford will be taking snaps under center at Heinz Field.

Vikings coach Mike Zimmer expects quarterback Sam Bradford to start Sunday at Pittsburgh despite being limited by a knee injury all week. Adam Schefter added that the "Vikings have guarded optimism but concern" about Bradford's left knee injury, which did require an MRI this week.

ESPN reported Friday that Bradford had an MRI on his left knee last Tuesday and that, even though results were negative, Vikings officials have some concern that he had swelling, pain and discomfort in the surgically repaired knee.

In that case, backup Case Keenum will take over the starting quarterback duties this Sunday. It's the same knee for which Bradford has undergone two surgeries to fix a torn ACL in 2013 and 2014. He also missed the entire 2014 campaign with a torn ACL.

The Vikings veteran quarterback is coming off an impressive performance against the New Orleans Saints on Monday Night Football, completing 27-of-32 passes for 346 yards.

As poorly as the Vikings' offensive line played last season, it was a miracle that Bradford was able to start 15 games.

The Vikings gave Sloter $20,000 per week to get him on the practice squad after the Broncos released him.

Sloter played just one season under center for Northern Colorado, throwing for 2,656 yards, 29 touchdowns and 10 interceptions while completing 62.1 percent of his passes and registering a passer rating of 155.7.

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