Darian DeVries needed just five games to earn one of West Virginia’s biggest non-conference wins since the Mountaineers joined the Big 12.

WVU (4-1) defeated No. 3 Gonzaga (5-1) 86-78 on Wednesday afternoon at Imperial Arena on Paradise Island, Bahamas. It was WVU’s first win over a top-5 team in November in program history and its first win over a top-10 team in November since 1985.

Gonzaga, which entered the game with an undefeated record and got most of its scoring from its Sweet 16 team last year, controlled the lead for most of the first half, but WVU held on.

“Our whole game plan was not to make this a transition game,” WVU head coach Darian DeVries said.

The Bulldogs never led by more than nine points in the first half. WVU forward Amani Hansberry provided a spark on offense to open the game while the rest of the Mountaineers started cold. Hansberry scored 10 points (4-6 FG) in the first nine minutes of the game while his teammates started the game 2 of 8 from the field.

At the second media timeout, WVU trailed 20-16.

With WVU threatening, Gonzaga went on a 9-0 run after the timeout to take a 25-16 lead. A Tucker DeVries steal that led to a transition dunk ended Gonzaga’s run. DeVries scored five points in the first half and recorded four rebounds, a steal and two blocks.

Three points from WVU guards Javon Small and Toby Okani kept the deficit manageable as Gonzaga made four of its final seven field goal attempts of the half to take a 39-31 halftime lead.

WVU shot just 9 of 30 from the field in the first half, but also made all seven of its free throw attempts.

Hansberry went into the halftime locker room as the game’s second-leading scorer with 10 points. Gonzaga guard Khalif Battle had a game-high 14 points at halftime.

After Gonzaga took a 10-point lead early in the second half, WVU went on a 17-2 run to take a 50-45 lead with 12:25 left. Small scored 10 of 17 points during the run.

Battle scored just two points in the first eight minutes of the second half. Gonzaga also went 5 of 14 from the field in that span.

The second half turned out to be a back and forth battle for the rest of the time. In the last 12 minutes of the game, the two teams exchanged the lead four times.

Gonzaga worked to build a five-point lead in a 71-66 game with just 25 seconds left in the second half. At that point, WVU needed a basket and DeVries provided one. The senior guard hit a three-pointer with 19 seconds left to bring WVU within two points.

Then DeVries, who was playing a great game defensively, was pocketed by Gonzaga guard Nolan Hickman, and Hickman fouled DeVries in transition. DeVries then made both free throws and tied the game at 71-71 with just five seconds to play.

“The guys at the front of the press did a great job speeding it up,” Tucker DeVries said.

Gonzaga failed to attempt a game-winning shot as guard Toby Okani Battle stole the ball as time expired.

In overtime, it was all WVU.

The Mountaineers outscored the Bulldogs 15-7 in overtime. WVU allowed Gonzaga to make just two of its 10 shots in overtime, while the Mountaineers went 3 for 5 in the final period and made nine of its 10 free throw attempts.

WVU defeated Gonzaga 55-39 in the second half and overtime.

Small recorded a season-high 31 points on 9 of 18 shooting for the second consecutive game. Hansberry added 19 points and DeVries (16 points) and Toby Okani (10 points) also reached double figures.

“Overall I think I had a pretty good game, but the win is more important,” Small said.

DeVries also contributed six rebounds, four assists and four blocks.

WVU will now face Louisville in the Battle 4 Atlantis winner’s bracket on Thursday at noon ET on ESPN.