Deer Creek held Carl Albert to eight points in the final quarter.
“These games are about momentum swings so it felt great to give my team a big one with that shot,” Adair said.
Adair scored seven points, while Ashley Gibson led Deer Creek with 14 points.
Deer Creek advances to the Class 5A state tournament.
Oklahoma signee Gioya Carter led Carl Albert with 25 points.
Carl Albert will play Lawton MacArthur at 1:30 p.m. Saturday at Edmond North for a berth in the state tournament.
Lawton MacArthur beat El Reno 44-32 to stay alive. Alaysia Vann had 15 points, 6 rebounds and 6 blocks to lead the Highlanders.
NO. 1 SANTA FE ADVANCES TO STATE
Edmond Santa Fe has been a force since losing to Putnam City in the season's second game.
The Wolves had already avenged that loss to the Pirates during the regular season but cruised against P.C. again Thursday, winning 59-42 at Choctaw to advance to the Class 6A state tournament for the fifth consecutive season.
Aahliyah Jackson had 13 to lead Santa Fe while Cameerah Graves added 12 and Tamara Lee 10.
Putnam City will play Southmoore for a berth in the state tournament at 3 p.m. Saturday in Harrah.
Southmoore beat Norman 49-34 to stay alive.
Kayla Tucker had 16 and Serithia Hawkins added 13 for the SaberCats (21-5).
Taylor Ely had 20 to lead Norman.
Bailey Taylor scored 23, and McKenzie Cooper added 20 as Class 5A No. 1 Shawnee beat Piedmont 60-50 to earn a state tournament berth. … Toree Thompson scored 23 to send Broken Arrow to a 61-52 win over Mustang to stay alive and eliminate Mustang. … Dionna Collins scored 32 points to give Del City an 81-71 win over Ardmore. Del City led 57-32 at half before Ardmore used a 22-9 third quarter to creep closer. Patrice Bennett scored 37 for Ardmore.