The 1 seeds last season had 4 losses (Pac Arizona), 2 losses (SEC Florida), 6 losses (ACC Virginia), 0 losses (mid-major Wichita State). I would count on 5 losses out of the ACC getting a 1, but the ACC Tournament likely adds another loss. The OOC SOS looks weak to me in terms of very impressive wins, but decent in terms of RPI, which Duke and Kansas always game properly.