Jamaal Franklin scored 21 points, James Rahon had 17 and San Diego State beat Oklahoma 70-55 on Friday night to earn its third NCAA tournament victory.
The seventh-seeded Aztecs (23-10) will play No. 15 seed Florida Gulf Coast on Sunday in the South Regional. The Eagles introduced themselves to the college basketball world with a 78-68 win over Georgetown.
After that thriller, this game never stood a chance.
The Aztecs did nothing spectacular, but everything well and used a modest 8-0 run late in the second half to snap a tie game and take control.
Romero Osby scored 22 points for the 10th-seeded Sooners (20-12).
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