Waco, Texas ? Iowa State had the right idea, focusing its defensive attention on Baylor’s two impressive post players and ignoring the poor-shooting guard.

The strategy worked, until Chelsea Whitaker suddenly starting making shots in the second half.

Whitaker scored all of her career-high 20 points after halftime and had two key steals, helping seventh-ranked Baylor beat the No. 19 Cyclones, 82-77, Saturday to stay alone atop the Big 12 Conference standings.

“It was my decision to leave Chelsea Whitaker open. It wasn’t a mistake by the players,” Iowa State coach Bill Fennelly said. “We gambled and lost.”

Steffanie Blackmon added 22 points, while Sophia Young had 16 points and 11 rebounds for Baylor (21-3, 11-2), which won its 16th straight home game since last February.

Iowa State (19-5, 9-4) lost for the third time in four games.

No. 13 Texas 79, Okla. St. 46

Stillwater, Okla. — Tiffany Jackson had 25 points and 10 rebounds for Texas (17-7, 10-3). Taleesha Conder led Oklahoma State (7-16, 2-11) with 16 points.

No. 15 Texas Tech 56,

Texas A&M 53

Lubbock, Texas — Cisti Greenwalt scored the winning layup with 29.4 seconds remaining for Texas Tech. Greenwalt had a double-double with 10 points and 14 rebounds for the Red Raiders (19-5, 10-3 Big 12). Morenike Atunrase scored 13 points to lead the Aggies (13-11, 3-10).

No. 18 Kansas State 73, Colorado 51

Manhattan — Kendra Wecker had 20 points and 14 rebounds, leading Kansas State. Wecker broke former teammate Nicole Ohlde’s career rebounding mark, finishing the game with a school-record 1,002 for the Wildcats (18-6, 9-4).

Laurie Koehn finished with 15 points, hitting five three-pointers to move into third place on the NCAA three-point list, and Megan Mahoney added 14 points and four assists to break Mary Jo Miller’s school assists record. Mahoney has 565 assists.

Veronica Johns-Richardson led Colorado (8-16, 1-12) with 14 points.

Oklahoma 73, Missouri 59

Norman, Okla. — Leah Rush scored 20 points, and Erin Higgins added 18 — all on three-pointers — for Oklahoma (15-9, 7-6). C’stelle N’Garsanet scored 20 points to lead the Tigers (9-15, 3-10).