I picked up Carson Palmer in one league to replace Mariota who may not play tonight. He's owned in less than 60% of ESPN leagues.
If he's owned, there may be other options that have slipped through the cracks.
Bradford may be done. The Viking's running game took a hit when Dalvin Cook was lost for the year. You could try Case Keenam and Teddy Bridgewater. I don't know when Bridgewater will play, but his return could be quickened by the loss of Bradford.