DALLAS — UConn’s record 111-game winning streak came to a startling end when Mississippi State pulled off perhaps the biggest upset in women’s basketball history, stunning the Huskies 66-64 on Morgan William’s overtime buzzer beater in the national semifinals Friday night.

William hit a 15-footer to cap it, moments after a replay review awarded UConn two free throws for a flagrant 1 foul call that tied the game with 26.6 seconds left.

“I live for moments like this,” William said. “UConn, they’re an incredible team. For me to make that shot against them, it’s unbelievable. I’m still in shock right now. I wanted to take the shot. I wanted to take the shot and I made it.”

UConn coach Geno Auriemma had a wry smile on his face after the final shot. There wasn’t much else he could do, the chance for a fifth straight national title suddenly beyond his grasp.

The Huskies hadn’t lost in 865 days, with that defeat coming to Stanford in overtime on Nov. 17, 2014.

“We had an incredible run, but we came up against a much better team tonight,” Auriemma said.

The Bulldogs (34-4) will play South Carolina for the national championship Sunday night in a matchup of two SEC teams.

Mississippi State (33-5) and UConn met in the Sweet 16 last season and the Huskies won by 60 points — the most-lopsided win in regional semifinals history. All season long the Bulldogs had that humiliating loss on their minds.

Now they’ve erased that defeat, beating UConn (36-1) on the grandest stage in one of the sport’s greatest games.

“I don’t have to play them 100 times. Only have to beat them once,” Mississippi State coach Vic Schaefer said. “That is one heck of a basketball team, the greatest of all-time. But how proud am I of my kids?”

Mississippi State led 64-62 before a replay review gave Katie Lou Samuelson the two free throws that tied the game. After a UConn turnover,