Let's say Same Bradford can't play next week and backup Case Keenum is either terrible or injured during the game against Tampa Bay. The Vikings would then need to turn to Kyle Sloter — activated from the practice squad Saturday to be Keenum's backup.
Let's say Sloter, who was impressive enough in the preseason for Denver that the Vikings gave him a hefty practice squad salary, was impressive when given an opportunity. He could find himself starting Week 4 against the Lions depending on the status of Bradford and Keenum.
Now let's factor in a recent report from the NFL's Ian Rapoport, who said Teddy Bridgewater is expected to be ready to play by midseason. Would it be crazy to think Bridgewater could start some games for the Vikings this season? Not at all. So it's entirely possible to see a scenario where the Vikings use four different starting quarterbacks this season.
Read Michael Rand's blog at startribune.com/randball. firstname.lastname@example.org.