Sydney Chastain led Westmoore with 13.
In the other game at Putnam City, Choctaw's Addie Vernon led a balanced attack with nine points as the No. 12 Yellowjackets beat Edmond North 45-41.
Choctaw trailed by seven at halftime before outscoring the Huskies 17-6 in the third.
LAWTON IKE UPSETS PCN
Unranked Lawton Eisenhower clawed back after a slow start, then wore No. 18 Putnam City North down in overtime, beating the Panthers 54-52 at Edmond Santa Fe.
Nikki Smith scored 20 and Crystal Polk added 17 as the Eagles battled back from an 11-point halftime deficit.
Lawton Eisenhower outscored the Panthers 15-8 in the third and 14-10 in the fourth to force overtime.
The Eagles play Class 6A No. 1 Edmond Santa Fe at 1:30 p.m. Saturday.
Freshman Rebecca Wright scored 20 for Plainview in a 47-41 overtime win over Washington in a 3A regional. ... Bri Kuestersteffen scored 21 points to help Norman North to a 67-26 blowout of Lawton. ... Jordan Gilbert scored 14 and Gioya Carter added 12 — 11 in the first quarter — to help Class 5A No. 3 Carl Albert to a 57-10 win over Southeast. ... Class 6A No. 1 Edmond Santa Fe cruised past U.S. Grant 77-4. Santa Fe led 56-2 after three. ... Alaisha Castleberry scored 20 and Breail Goodlow added 16 as Del City beat Altus 77-33. ... Andee Decker scored 18 to lead Edmond Memorial to a 51-40 win over Yukon at Southmoore. ... Sophomore Kyeria Hannah and senior Kayla Tucker had 12 each in Southmoore's 61-22 blowout of Putnam City West. ... Jentri Thompson scored 13 to help El Reno to a 57-39 win over Bishop McGuinness. The Indians dominated the first half, leading 32-10 at the break. ... Darian Hill scored 26 to help Class 4A No. 8 Harrah to a 65-49 win over Cache.
Oklahoma State signee Stephen Clark scored 40 in Douglass' 99-49 win over Weatherford. ... Adam Keiffer's 18 helped lift Harrah to a 46-41 win over Cache. Harrah will play Ada for the regional title after Ada beat Tecumseh for the first time in three meetings this season. ... Deric Shelton scored 22 to help 3A No. 12 Plainview to a 47-27 win over Washington. ... Class 4A No. 4 Anadarko beat Purcell 42-31.