The extra period didn't seem to bother the Panthers, however. Ta'naisha Hill and Shaquera Wade each hit a basket for Huntsville for a 58-54 lead, and Huntsville never trailed again, stretching the lead to as much as 10 points.
"It was a great effort by Mountain Brook," Huntsville coach Krystle Johnson said. "Toward the end, we did everything in our power to give away the game. ... Right now, I'm happy and frustrated at the same time."
Huntsville had a 54-49 lead with less than a minute to go in regulation. Mountain Brook sliced it to 54-52 with 20 seconds left on a Nicole Strahl foul shot, but Huntsville had Abigayle Cavitt wide open at the other end of the court. However, Cavitt couldn't run down the full-court pass, and the ball sailed out of bounds. Mountain Brook's Collier Ogilvie hit a running hook shot with eight seconds left to tie it 54-54.
Hill finished with 21 points, 10 rebounds and five assists for Huntsville, while Wade added 20 points and five rebounds. Nakiea Burks had 19 points and 10 rebounds.
Sara Carr, the daughter of 1980s Auburn linebacker Gregg Carr, finished with 31 points and 12 rebounds for Mountain Brook (22-8), while Ogilvie added 12 points, six rebounds and three steals. Ogilvie's father, Major Ogilvie, was part of Alabama's 1978 and 1979 football national champions.
Huntsville (24-8) will face Shades Valley for the regional title Friday at 9 a.m.