In Frankenmuth, Carrollton ends Bridgeport's season, stunning the Bearcats 63-44 in Frankenmuth's Class B district final.
The Cavaliers head to Mount Morris where they'll play Goodrich in the regional semifinals on Monday.
Fenton needed double-overtime to knock off Clarkston, 68-66 as they won the Swartz Creek district title in Class A.
Their draw is Saginaw in the Midland Dow regional.
Flint Northwestern defeated Davison, 65-57 at Kearsley High School.
THe Wildcats, also in Class A's Midland Dow regional, will play Bay City Western on Monday.