Oklahoma St. rallies, beats Missouri State 29-15 in regional

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Missouri State outfielder Spencer Nivens (18) fields a hit during an NCAA college baseball tournament regional game against Oklahoma State, Sunday, June 5, 2022, in Stillwater, Okla. (Ian Maule/Tulsa World via AP)

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Oklahoma State utility Roc Riggio, left, celebrates with utility Zach Ehrhard (4) after hitting a home run against Missouri State during an NCAA college baseball tournament regional game Sunday, June 5, 2022, in Stillwater, Okla. (Ian Maule/Tulsa World via AP)

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Oklahoma State utility Jake Thompson rounds third while scoring a run against Missouri State during an NCAA college baseball tournament regional game Sunday, June 5, 2022, in Stillwater, Okla. (Ian Maule/Tulsa World via AP)

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Missouri State pitcher Trey Ziegenbein (40) watches as infielder Walker Jenkins (10) collides with an umpire while attempting to field a throw from the outfield during an NCAA college baseball tournament regional game Sunday, June 5, 2022, in Stillwater, Okla. (Ian Maule/Tulsa World via AP)

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Missouri State’s Drake Baldwin (21) smiles while celebrating with Hayden Moore (14) after hitting a home run against Oklahoma State during an NCAA college baseball tournament regional game Sunday, June 5, 2022, in Stillwater, Okla. (Ian Maule/Tulsa World via AP)

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Missouri State’s Drake Baldwin, right, smiles while celebrating with Hayden Moore (14) after hitting a home run against Oklahoma State during an NCAA college baseball tournament regional game Sunday, June 5, 2022, in Stillwater, Okla. (Ian Maule/Tulsa World via AP)

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Missouri State pitcher Trey Ziegenbein delivers against Oklahoma State during an NCAA college baseball tournament regional game Sunday, June 5, 2022, in Stillwater, Okla. (Ian Maule/Tulsa World via AP)

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Missouri State’s Cam Cratic, center, celebrates with teammates after hitting a grand slam against Oklahoma State in the second inning during an NCAA college baseball tournament regional game Sunday, June 5, 2022, in Stillwater, Okla. (Ian Maule/Tulsa World via AP)

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Missouri State’s Grant Wood, right, hugs teammate Will Duff (5) after a home run against Oklahoma State during an NCAA college baseball tournament regional game Sunday, June 5, 2022, in Stillwater, Okla. (Ian Maule/Tulsa World via AP)

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Oklahoma State pitcher Dillon Marsh delivers against Missouri State during an NCAA college baseball tournament regional game Sunday, June 5, 2022, in Stillwater, Okla. (Ian Maule/Tulsa World via AP)

STILLWATER, Okla. (AP) — Roc Riggio had seven RBIs, Griffin Doersching hit the go-ahead grand slam to cap Oklahoma State’s seven-run sixth inning and the Cowboys rallied to beat Missouri State 29-15 Sunday to avoid elimination at the Stillwater Regional.

Oklahoma State (41-21), which beat the Bears 10-5 in the opening round of the regional, plays Arkansas in the championship round. A loss by the Razorbacks, who beat OSU 10-5 Saturday to knock the Cowboys into the loser’s bracket, would force a Monday finale.

Missouri State scored nine runs in the second inning and three more in the bottom of the third to take a 12-0 lead but the Cowboys scored at least four runs in five of the final six innings - including seven apiece in the sixth and ninth.

Reliever Trevor Martin (4-3) pitched the final 6 2/3 innings and struck out 16 batters to earn the win.

Nolan McLean hit a home run to lead off the sixth and Doersching capped the top of the inning with a bases-loaded shot to give Oklahoma State the lead for good at 17-14.

Riggio finished 5-for-7 with two doubles and a two-run homer in the fifth. Jake Thompson went 4-for-6 with two doubles and three RBIs and Marcus Brown was 5-for-7 with three doubles, three RBIs and five runs scored.

Drake Baldwin had a double, two home runs and drove in seven runs for Missouri State (31-29). Spencer Nivens, Cam Cratic, Grant Wood and Will Duff each hit homers for the Bears.

The 44 runs scored is an NCAA Tournament single-game record.

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