They dropped two spots in the AP poll this week from last. A win over a top ten team may vault them over Cincy and get them in the NY6.
BYU isn’t going to get a ranked P5 so they will play good teams if the opportunity presents. I think TH wants to add two quality opponents to get to 12 games and have a decent SOS.
Or is there some obvious reason we wouldn’t play Marshall that I don’t know about like they have a covid outbreak?