KANSAS CITY, Mo. (AP) — Buddy Hield scored 39 points, Ryan Spangler made a series of critical plays down the stretch and sixth-ranked Oklahoma beat No. 21 Iowa State 79-76 on Thursday night in the Big 12 Tournament quarterfinals.

Spangler finished with 10 points and 12 rebounds, and Isaiah Cousins also had 10 points for the third-seeded Sooners (24-6), who advanced to play ninth-ranked West Virginia in the semifinals. The Mountaineers rolled past TCU earlier in the night.

Georges Niang matched a career-high with 31 points for the sixth-seeded Cyclones (21-11), who trailed by 14 midway through the second half before making it a game. But after squandering several chances to get within a possession, it wasn’t until Deonte Burton’s 3-pointer at the buzzer that they finally did.