Report: Bradford a game-time decision due to knee injury

The Minnesota Vikings are considering quarterback Sam Bradford a game-time decision for Sunday's matchup with the Pittsburgh Steelers, a source told ESPN's Adam Schefter.

The Vikings are reportedly expected to decide after his pregame workout.

Bradford has been dealing with a knee injury all week and is officially listed as questionable. He did make the trip to Pittsburgh with the team.

The Vikings promoted quarterback Kyle Sloter from the practice squad to the active roster earlier Saturday as an insurance policy should Bradford be ruled out. Backup quarterback Case Keenum would draw the start with no Bradford. It would be Keenum's first game action with the Vikings after spending the last two seasons with the Los Angeles and St. Louis Rams.

It's an inopportune time for Bradford to miss a game after he completed 27-of-32 passes for 346 yards and three touchdowns against the New Orleans Saints in Week 1.