Kenpom helpfully tracks referees, so I was able to see that one of tonight's referees, Earl Walton, is in his 2nd year doing Big 10 games with regularity. Last year, we went 12-8 in conference, but just 2-4 in games where he was one of the refs, including our home OT win over Purdue where Edey got to shoot a then-career high 20 FTs. He was also one of the refs in the Chicago State game that we lost, along with our NCAA tourney game against UCLA the year before.
One of the other refs, Will Howard, reffed his first-ever Big 10 game tonight.
The third ref was Paul Szelc, who is a longtime Big 10 ref, and nothing really jumped out at me from his previous NU games.
Obviously I have no way to know which ref called which fouls, but if I'm Collins I'd focus on making sure Walton doesn't ref our games the rest of the year.