NORMAN, Okla. (Interstat) — Deiten Lachance hit three home runs, including a go-ahead shot in the seventh inning, to lift Oklahoma to a 12-9 victory over Tennessee on Saturday. The Sooners improved to 32-20, while the Volunteers dropped to 37-19.

Oklahoma seized control in the first inning, scoring six runs on a combination of power and Tennessee defensive mistakes. Lachance opened the scoring with a solo homer to center field. The inning included two Tennessee errors, one on a throwing error by the shortstop and another on a wild pitch, while Dayton Tockey added a bases-loaded walk and later scored on the wild pitch. Jaxon Walk capped the rally with an RBI single, giving Oklahoma a 6-0 lead.

Tennessee answered in the second when Reese Chapman singled and Levi Clark followed with a two-run homer to left center, cutting the deficit to 6-2. Oklahoma responded in the bottom half as Trey Gambill doubled to drive in Lachance, who had tripled, and Dasan Harris singled home Gambill, pushing the lead to 8-2.

The Volunteers chipped away. In the fourth, Chapman tripled and Clark grounded out to bring him home. In the fifth, Tennessee scored three times. Nolan Eisfelder was hit by a pitch, Antigua Antigua doubled, and Wright G. lifted a sacrifice fly. Grimmer B. followed with another sacrifice fly, and Henry Ford homered to left field, tying the game at 8-8.

Lachance struck again in the bottom of the fifth, launching his second homer of the day to left center to put Oklahoma ahead 9-8. The game remained that way until the seventh, when Tennessee rallied again. Wally Grimmer singled, Wright G. was hit by a pitch, and Ford walked to load the bases. Chapman delivered a two-run single through the right side, giving Tennessee an 10-9 lead.

Lachance answered immediately in the bottom of the seventh, hitting his third homer of the game, this one to right center, to tie the score at 10-10. Tockey added a solo homer in the eighth to right center for a 11-10 Oklahoma lead. Tennessee got a run back in the top of the eighth when Wright doubled to right field to score pinch runner Abernathy J., who had reached on an error. But Oklahoma reliever Jackson Cleveland escaped further damage, and Tockey’s homer in the bottom half provided the final margin.

Lachance finished 4 for 5 with three RBIs. Chapman went 4 for 5 with two RBIs. Ford had two hits, including a homer, and drove in a run. Clark drove in three runs. For Oklahoma, Tockey homered and drove in two, and Gambill collected two hits and an RBI.

On the mound, Will Haas earned the win with two scoreless innings, allowing no hits and striking out four. Cleveland earned the save with 1 1/3 hitless innings, fanning two. Ethan Baiotto took the loss for Tennessee after allowing two earned runs over 2 2/3 innings. Mark Hindy pitched a scoreless inning for the Volunteers.

Interstat’s game simulator had projected a final score of Tennessee 7, Oklahoma 4, and its ELO system gave Tennessee a 60.20 percent probability to win.