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Sue Ogrocki, Associated Press
Oklahoma's Jelena Cerina (12), Sharane Campbell (24), Joanna McFarland, Whitney Hand (25) and Kaylon Williams (42) celebrate during a timeout in the first half of an NCAA tournament first-round women's college basketball game against Michigan in Norman, Okla., Sunday, March 18, 2012.

NORMAN, Okla. — Aaryn Ellenberg scored 21 of her 28 points in the second half, Whitney Hand added 12 points and 10 rebounds and Oklahoma defeated Michigan 88-67 Sunday night in the first round of the NCAA women's tournament.

Playing on their home court, the Sooners (21-12) took control with an early 14-4 run and never trailed.

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Oklahoma led by 12 in the first 8 minutes. The advantage grew to 19 as Ellenberg came out hot in the second half and Oklahoma held the Wolverines without a basket for the first 5½ minutes.

Michigan (20-12), making its first tournament appearance in 11 years, got as close as eight with a flurry of 3-pointers by Carmen Reynolds before the Sooners closed it out.

Reynolds finished with 20 points to lead the Wolverines. Michigan's leading scorer, Rachel Sheffer, had only three points in a season-low 14 minutes.