TALLAHASSEE, Fla. (AP) -- Florida State had a miracle shot Sunday. North Carolina still had Tyler Hansbrough.
The junior forward had 22 points and a career-high 21 rebounds to lift the fourth-ranked Tar Heels to an 84-73 overtime victory over the Seminoles.
North Carolina (21-1, 6-1 Atlantic Coast Conference) shook off an unlikely 3-pointer by Florida State's Ryan Reid with 8.1 seconds left that sent the game into overtime.
"We expected a fight, but we didn't expect it to be that close," said North Carolina's Danny Green, whose three-point play with 2:53 left in the overtime ignited the 10-2 run that doomed the Seminoles (13-10, 2-6).
The shot that tied the game was the first 3-point attempt of Reid's career and the 6-foot-9 sophomore drained it from deep in the corner with aplomb.
"I saw that I really couldn't pass the ball to anyone so I shot the 3," Reid said. "In my head: 'Just get in there,' " Reid said. "It got in!"
And when North Carolina couldn't even get a shot off in the final seconds of regulation, the Tar Heels were staring at overtime before a raucous crowd already roaring about Reid's unexpected heroics.
"You can't do anything about that," North Carolina coach Roy Williams said. "When things aren't pretty you can still find a way to win."
And by then, Florida State's big men were all in foul trouble from trying to contain the 6-9 Hansbrough inside.
"In the second half he just kept fighting his way through," Florida State's Uche Echefu said. "He just keeps going, no matter what."
Echefu, Reid and freshman Julian Vaughn -- who took turns guarding Hansbrough -- all fouled out in the overtime.
Held to just three free throws in the first half and no field goals for more than 30 minutes, Hansbrough had eight points and five rebounds in the overtime.
"He's such a relentless player that he finds a way," Florida State coach Leonard Hamilton said.
North Carolina point guard Ty Lawson, who is averaging 14.1 points and 6.0 assists, sprained his left ankle four minutes into the game after colliding with the 240-pound Reid underneath the North Carolina basket.
"Some guys had to step up and play well," Hansbrough said. "We knew it was going to be tough without Ty."
Green scored 19 points and Deon Thompson had 11 for North Carolina, which overcame 21 turnovers, the loss of Lawson and a mediocre 42.6 percent shooting effort.
Hansbrough, the ACC's leading scorer and rebounder, was held without a field goal until 9:43 remained in the game. He was just 5-of-14 from the field, but was 12-of-14 at the free-throw line where the Tar Heels made 27 of 33 tries.
Hansbrough's fourth free throw Sunday gave him North Carolina's career record, surpassing Lennie Rosenbluth. Hansbrough has made 613 free throws with at least 10 games remaining this season and he has another year of eligibility.
Florida State trailed 31-29 at halftime despite shooting a chilly 34.4 percent in the opening 20 minutes.
Jason Rich led the Seminoles with 22 points while Isaiah Swann and Toney Douglas added 12 each, although Douglas was just 3-of-20 from the field.
The Seminoles will have to finish 6-2 to reach .500 in the league as they try and end a 9-year drought without an invitation to the NCAA tournament.