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Freshman Hallie Christofferson's 18 points lift Iowa State

AMES, Iowa -- Freshman Hallie Christofferson scored 18 points and Chelsea Poppens added 12 points and a career-high 19 rebounds, leading Iowa State (No. 20 ESPN/USA Today, No. 23 AP) to a 71-56 victory over Missouri on Saturday.

Lauren Mansfield contributed 14 points in a balanced offensive game that enabled the Cyclones (15-5, 3-3 Big 12) to survive a rare stretch of cold shooting by leading scorer Kelsey Bolte.

Iowa State built a 24-point lead in the first half and led 39-19 at halftime despite getting only six points from Bolte. Missouri (10-11, 2-5) whittled the lead to 67-56 with just over a minute to play, but Mansfield sank two free throws and Bolte hit a jumper to end the threat.

Bolte, averaging a league-best 24 points in Big 12 play, made two of her first three shots, then missed 13 of her next 14 and finished with 12 points on 5-for-20 shooting.

Iowa State's victory spoiled the return of Missouri coach Robin Pingeton, who was an assistant for the Cyclones from 2000-03.

Shakara Jones led the Tigers with 16 points.