OKLAHOMA CITY — In the ninth inning of Sunday’s back-and-forth Big 12 tournament title game, Texas A&M’s Andrew Collazo hunched over after his throwing error against Missouri, a miscue he figured might have cost the Aggies the championship.

Collazo quickly raised his head, however, and played on — and funny how baseball sometimes works. An inning later, Collazo again hunched over, catching his breath after his ecstatic teammates mobbed him at home plate.

“It got a little hot in that huddle,” said a grinning Collazo, whose 10th-inning home run to left field gave the Aggies a dramatic 10-9 victory over the Tigers in Bricktown Ballpark.

The breathtaking game-winner, too, looked awfully familiar. A year ago, then-A&M-standout Brodie Greene homered to nearly the same place in giving the Aggies a 10th-inning championship victory over Baylor.

“We can play around with Brodie a little bit, because Andrew hit his with the new bats, not those old trampoline bats,” a smiling A&M catcher Kevin Gonzalez said of the deadened aluminum bats in use under new NCAA guidelines.

Alonzo Adams/Associated Press

Gonzalez was seated next to teammate Charlie Curl in the dugout when Collazo approached the plate with two outs and the bases empty in the 10th.

“I told Curl, ‘Collazo is going to get into one right here’ — that he was going to make up for that error with his first homer of the season,” Gonzalez said. “Next thing you know, I started screaming in Spanish.”

With one ball and two strikes, Collazo smoothly stroked a hanging curveball from Tigers reliever Dusty Ross into the bleachers, touching off a wild celebration at home plate the Aggies (42-18) hadn’t enjoyed since, well, Greene’s homer.

“I knew the wind was howling out to left field,” said Collazo, who earned tournament most outstanding player honors. “And once the ball got into (the wind), it kept carrying. Once I reached first base, I knew it was out.”

A year ago after his homer, Greene, now in the Cincinnati Reds’ farm system, said, “The wind might have carried it some.”

Collazo’s blast also cut short the eighth-seeded Tigers’ upset bid. Missouri (27-32) was going to make the NCAA tournament only via the automatic bid earned through a Big 12 tournament title, and the Tigers were one strike from doing so in the ninth inning.

That’s when A&M pinch hitter Gregg Alcazar chopped a two-out, full-count pitch from Tigers reliever Phil McCormick into left field, scoring pinch runner Scott Arthur from second to tie the game at 9. A&M had trailed 6-0 after two innings before clawing its way back into the contest with five runs in the third.

“That was a tough one to lose for a lot of reasons,” Missouri coach Tim Jamieson said, his voice cracking. “I didn’t want to see it end.”

Earlier in the ninth, Collazo, after shifting from second base to third, had made the throwing error that led to the Tigers’ grabbing a brief 9-8 lead.

“I was down, but my teammates picked me up in the dugout,” Collazo said. “It wasn’t over, and coach (Rob) Childress said, ‘We’re going to do this, right here, right now.’ ”

A&M, a winner of five straight, will learn today if it earned a top-eight national seed in the NCAA tournament. The Aggies are one of 16 teams playing host to a four-team regional starting this weekend.

“I’m really proud of the toughness our team showed this week,” said Childress, whose team overcame deficits in all four of its Big 12 tournament wins. “We never quit.”

brent.zwerneman@chron.com