Armstrong led nearly the entire game in a 62-56 boys' basketball upset over Class 4A, No. 1 Park Center on the Pirates' home court.
The Falcons led by as many as 15 in the first half and took a seven-point lead into halftime. They made eight of 10 free throws down the stretch to stay ahead.
Adam Biewen led the Falcons with 18 points, Devyn Frye and Jake Breitbach had 13 each and Hezekiah Iyawe 10.
Detavius Frierson led the Pirates with 16 points and Tommy Chatman had 14.
Minnehaha Academy 61, Eden Prairie 60: Jalen Suggs scored 18 points to lead the Class 2A, No. 1 Redhawks past the host Class 4A, No. 5 Eagles. Donovan Smith and Chet Holmgren had 12 points each and Kaden Johnson 10 for the Redhawks. Drake Dobbs and Austin Andrews led the Eagles with 14 points each, Ariel Bland had 12 and Connor Christensen 10.
Benilde-St. Margaret's 55, Waconia 51: The visiting Red Knights overcame a two-point halftime deficit to defeat the Class 3A, No. 5 Wildcats. Dylan Drees led Benilde-St. Margaret's with 16 points, Isaiah Smith had 14 and Walker Johnson 10. PJ Hayes led the Wildcats with 14 points, Ryan Biehn had 12 and Eric Groeneveld 10.
Spring Lake Park 74, Irondale 72: Daydor Phillips made a basket at the buzzer to give the Panthers the victory over the host Knights. Phillips finished with 10 points. Gabe Myren led the Panthers with 24 points, Blake Remme had 16 and Jacob Say and Mason Johnson 11 each. Leighton Glodek led the Knights with 21 points, Aden Price had 17 and Zach Roberts 15.
Fridley 55, Mounds View 54: Isaac Burns led the host Tigers with 23 points, Harrison Blum had 12 and Evan Shaw 11. Evan Kim led the Mustangs with 16 points and Thomas Gebhardt had 10.