What is the regular season worst loss by a number one ranked team in ncaa basketball?

117 points; Long Island 179, Medgar Evers 62Nov. 26, 1997: LIU used nonstop defensive pressure to destroy its Division III Brooklyn neighbor for the biggest margin of victory in D-I history. The Blackbirds had 39 steals and forced 60 turnovers -- or one turnover every 40 seconds. Yikes. LIU coach Ray Haskins expressed regret over the margin of victory several days later: "It wasn't by design, and what made it difficult was our style of play. I'm not proud of this, because to me, it's like a prize fighter beating up his little brother." Medgar Evers was very fortunate that LIU didn't have a boxing team. Getting knocked out hurts more than getting dunked on.