Texas A&M improved its season record to 3-1, its only loss coming Monday night to St. Louis 70-49 in the first round of the CBE Classic.
The Aggies survived a poor shooting performance, just 36% from the field, thanks in large part to a significant rebounding edge over Washington State, 32 to 19.
It was a see-saw game as the lead changed seven times, with neither team every able to gain more than a 5-point advantage.
Texas A&M scored just 16 points in the first half and trailed Washington State at halftime 21-16.
The Aggies came back to take their first lead since early in the game when Ray Turner made a free throw at the 17:22 mark in the second half to give Texas A&M a 27-26 lead.
The Aggie lead grew to five, 31-26, two aand a half minutes later when Elston Turner made a pair of free throws.
But Washingtonm State came back to regain the lead, 39-36, when Mike Ladd hit a 3-pointer with 10:20 to go in the game. The Washington State lead grew to five, 46-41, when Brock Motum made a jumper with six minutes left in the game.
Texas A&M briefly regained the lead, 51-50, when Ray Turner made two free throws with 2:34 left in the game. But Dexter Kernich-Drew made 3-point jumper to give Washington State a 53-51 lead with 2:02 to play.
The Aggies missed two shots and a free throw before Ray Turner made a free throw to pull Texas A&M back to within one, 53-52, with 33 seconds left in the game.
Elston Turner had a steal but missed a 3-point jumper with 27 seconds to play.
Washington State rebounded and J'Mychal Reese fouled D.J. Shelton with 17.5 seconds remaining Shelton had a chance to ensure at least overtime for Washington State when he went to the foul line. He managed to make the first free throw but missed the second, leaving his team clinging to a two-point lead.
The Aggies raced up court. J'Mychal Reese got the ball in the hands of Elston Turner. Turner cleared out the right side of the lane as if he was planning to drive for a tying basket. Instead, he launched a 3-pointer that hit nothing but net.
For Texas A&M, forward Ray Turner has 14 points while Elston Turner had 10. Rebounding was key for the Aggies and Kourtney Roberson pulled down 12 rebounds.
The Aggies held the Pac 12's leading returning scorer, forward Brock Motum, to 15 points and 5 rebounds. Washington state was led by guard with 16 points Dexter Kernich-Drew.
Texas A&M improves to 3-1 while Washington State falls to 2-3 in this SEC vs Pac 12 battle.
Texas A&M hosts Northwestern State (3-1) at Reed Arena next Monday night. Northestern State suffered their first loss of the season Tuesday night, in a close game with LSU, 102-95.