Prior to Bridgewater's injury, there was largely only one thing holding Stefon Diggs back from having an elevated average draft position (ADP). The team's run-heavy tendencies made it look as if he wouldn't see the volume necessary to be a high-end fantasy wide receiver. With Bridgewater down, even though the team will certainly lose efficiency, the dip there may be nullified by the bump in volume.
Diggs came on the scene in Week 4 with a 10-target game, and he was the focal point of the passing game from then on. He controlled 23.46% of the team's targets, and that's not a number you'll find often at his current eighth-round ADP. The only player the Vikings brought in over the offseason to cut into that -- Laquon Treadwell -- is currently playing with the second-team offense. Diggs was in line to be the clear-cut top receiver on the team.
Then you add in that the team is moving to an in-door stadium -- which has traditionally led to increased fantasy output -- and you could easily argue that Diggs was undervalued before Bridgewater's injury. Now, he seems to be just about right.
Diggs loses efficiency because the team shouldn't be able to generate as many scoring drives without Bridgewater. But Diggs will likely gain volume, and he was a bit under-priced to begin with, so he's still worthy of his current ADP in re-draft leagues despite the bleak outlook.