Oklahoma uses its defense to hold on after losing a 15-point lead in the second half.
AUBURN HILLS, Mich. - Tom Izzo doesn't regret putting Michigan State through a very tough schedule despite a loss that gave it its worst start since 1995-96, his first season as coach.
Jason Detrick scored a career-high 26 and No. 14 Oklahoma drew two charges in the final seconds to beat the fifth-ranked Spartans 80-77 in overtime Saturday.
The Sooners gave Michigan State (3-3) its third loss in 12 days, all against ranked teams.
"If we played a cupcake, our players would've gotten a false sense of where we are," said Izzo, who had a crumpled boxscore in his hands nearly an hour after the game. "I'm going to play these kinds of games next year and the years after - until they fire me.
"The only thing I did wrong was the timing of our games. Not only did we play Kansas, Duke and Oklahoma in 12 days, but in between, we played Penn and DePaul."
Duke beat the Spartans 72-50 Wednesday, their worst loss at home since 1997. They lost 81-74 at Kansas on Nov. 25. Michigan State plays Kentucky in Detroit on Saturday and at Syracuse and UCLA before starting the Big Ten season.
The Sooners made two plays on defense to seal a game marred by a combined 85 free throws.
De'Angelo Alexander set his feet just in time to have Maurice Ager called for a charge with 2.8 seconds left. Ager's shot, which would have given Michigan State the lead, was waved off. Johnnie Gilbert drew a charge against Chris Hill with 15 seconds left.
Izzo stomped his feet and screamed at the officials after both calls, but the Spartans had enjoyed a big disparity at the free-throw line. Michigan State was 42-of-48 at the line and Oklahoma was 31-of-37.
Oklahoma led 38-31 at halftime and would have led by more if Michigan State didn't make 17 free throws. The Sooners opened the second half with a 10-2 run to take their first of two 15-point leads. The Spartans, who trailed 50-35 with 13 minutes left, got back into it with a 14-3 run.
With 6.9 seconds left, Paul Davis forced overtime with a three-point play, tying it at 65.
Oklahoma's Drew Lavender dribbled the length of the court and missed a short runner that would have won it.