Fast break

What went right: The Buffs played exceptional defense after halftime, holding Arizona to 17 points in the final 25 minutes of the game.

What went wrong: The first 13-plus minutes were a disaster, as Arizona took a 32-12 lead at one point late in the first half. CU's offense was miserable and its defense even worse during that stretch.

Star of the game: Jamee Swan. Playing in her home town, Swan had 18 points, seven rebounds and a career-high six steals. Her jumper in the final second of regulation sent the game to overtime.

What's next?: The Buffs will host UCLA on Friday at 6 p.m. at Coors Events Center.

Colorado women's basketball coach Linda Lappe would have preferred to avoid the type of history her team made on Sunday.

Yet, considering how the Buffaloes played the first 13 minutes, 45 seconds, she'll take it.

Lappe's squad rallied from a 20-point deficit to stun Arizona 61-56 in overtime at the McKale Center in Tucson, Ariz. It is believed to be the largest comeback victory in CU women's basketball history.

According to CU, the previous largest comeback on record was a 19-point deficit against Washington on Dec. 21, 1982.

"You don't need to make that history," Lappe said on AM-760 radio after the game. "But, yes, I'm really proud. I told our team, as disappointed as I was (at halftime), I was 10 times more proud of them for how we came back in the second half and fought."

Senior Ashley Wilson scored seven of her 11 points in overtime and Jamee Swan, who grew up in Tucson, had 18 points, seven rebounds and a career-high six steals for the Buffs.

With the win, CU (15-12, 5-11 Pac-12) clinched a postseason berth. Guaranteed to finish at least .500, the Buffs will be eligible for the Women's NIT if they don't earn an NCAA Tournament bid.

Playing in front of family and friends, Swan sent the game into overtime with a short jumper with 0.9 seconds left in regulation.

"It's definitely special," Swan said of performing well in front of her personal cheering section.

With the game tied 51-51 early in overtime, Wilson drained a 3-pointer and then moments later had a steal and breakaway layup to put the Buffs ahead by five and they never trailed again.

Arizona (5-22, 1-15), which came in averaging a conference-worst 57.7 points per game, jumped to a 32-12 lead just 13 minutes, 15 seconds into the game. On senior night, the Wildcats had their highest-scoring first half of the season, taking a 39-23 lead into halftime.

"We didn't start off the game with the right mindset," Lappe said. "They were getting any shots that they wanted to get. We just had to go back to just playing our defense and make sure we didn't give them anything easy. We kind of flipped that switch going into halftime and then we carried that out through the second half."

CU actually began its rally during the final 6:20 of the first half, out-scoring the Wildcats 11-7.

Arizona made just five field goals and scored 21 points during the final 30 minutes of the game. Arizona's 10-point second half matched its lowest-scoring half of the season.

"We played our worst first half of the entire season and one of our better second halves of the year," Lappe said. "It was good to be able to turn it around at halftime."

Arielle Roberson had 13 points and 10 rebounds for the Buffs. It was her fifth double-double of the season, but her first in Pac-12 play. She also tied her career high with three blocked shots.

Notable

Swan's previous career high for steals was two. ... Arizona had 16 points off CU turnovers, but none in the second half or overtime. The Buffs had 23 turnovers for the game. ... CU out-scored the Wildcats in second-chance points, 20-1. ... Senior Brittney Wilson (concussion) missed her second consecutive game. She had played all 126 games of her career before this week.