Joakim Noah's hard-edged play was the difference in the Bulls' 95-88 OT victory against the Heat.
Wichita St. is tournament-bound as MVC champions with a record of 34-0, but critics remain.
Virginia's hopes for a No. 1 seed took a hit with a 75-69 overtime road loss to Maryland.
Wichita State finished a stupendous regular season at 34-0 after an 83-69 win over Indiana St. in the MVC title game.
Virginia was hoping to keep its push for a No. 1 seed going, but faltered with a 75-69 overtime road loss to Maryland.
Behind a huge game from Joakim Noah and their usual tireless defense, the Bulls beat the Heat 95-88 in overtime.
A 30-point show from Jabari Parker led No. 4 Duke to a 93-81 win over 14th-ranked North Carolina.