DALLAS >> SMU is still finding a way to affect the Atlantic Coast Conference race even after losing an ACC regular-season game for the first time and falling out of the College Football Playoff picture.

T.J. Harden scored on a 1-yard run in overtime, and the Mustangs upset No. 10 Miami 26-20 on Saturday, handing the Hurricanes (6-2, 2-2 ACC) their second loss in three weeks and damaging their playoff hopes.

Ahmaad Moses put the Mustangs (6-3, 4-1) in position to win even with a field goal by intercepting Carson Beck just short of the goal line on the first possession of the extra period. It was Moses’ second pick.

Harden’s score came on the last of his four consecutive runs as the Mustangs won their 13th consecutive home conference game a week after a last-play loss at Wake Forest that was SMU’s first in 12 ACC regular-season games since rejoining a power league last year.

“We beat who I think is a playoff-caliber team with a national championship-caliber defense,” said coach Rhett Lashlee, who had another reason to celebrate with a two-year contract extension announced before the game. “We’re just thankful we found a way to grind it out and win.”

Harden took a handoff and ran left untouched, launching a wild celebration as SMU students stormed the field from the stands behind the Miami bench. Fans toppled the goal post in the end zone where Harden scored.

The base of the goal post couldn’t be dislodged, but the uprights were eventually removed — including one that was part of a controversial ruling on what SMU thought was a tying field goal in the fourth quarter — and taken out of the stadium.

Beck had 274 yards passing with touchdowns to Joshisa Trader and Alex Bauman, but threw two interceptions in Miami’s first game outside Florida this season.