COLUMBIA, Mo. (AP) -- Jerrell Jackson spun free from a knot of tacklers on a 38-yard reception for the go-ahead score, sparking a 16-point fourth quarter that helped No. 18 Missouri upend the top team in the BCS standings with a 36-27 victory over error-prone Oklahoma on Saturday night.
The third-ranked Sooners (6-1, 2-1 Big 12) committed three costly turnovers, out of character considering they had only five giveaways the first six games. Two of the turnovers led to 10 points and the other squelched a drive deep in Missouri territory, and the Sooners also missed a chip-shot field goal.
An 86-yard scoring return Gahn McGaffie on the opening kickoff added to that edge as the Tigers (7-0, 3-0) ended a seven-game losing streak in a lopsided series dating to 1998, and beat the Sooners for only the second time in the last 21 meetings overall.
Thousands of fans from a sellout crowd of 70,004 swarmed the field before the end of Oklahoma's final, desperate play, taking down both goalposts.
Missouri is 7-0 for the first time since 1960 when the school ended 11-0 and finished No. 5 after beating Navy in the Orange Bowl. This one was especially satisfying, coming against a school that whipped them the last two meetings, ending the Tigers' one-week stay at No. 1 with a 38-17 victory in the 2007 Big 12 championship game and hammering them again 62-21 in the 2008 conference title game.
Oklahoma became another national championship front-runner to tumble in a road conference game, following Alabama and Ohio State, who were both No. 1 in the AP poll when they lost the past two Saturdays.
That helped clear the way for the Sooners to be first when the BCS standings debuted last week, but it will be a short stay. Oregon will likely take the top spot. Second place could go to Boise State, Auburn or maybe TCU.
Jackson had nine catches for 139 yards, both season bests. He totaled 18 catches the first six games, playing the pre-conference schedule wearing a cast from a broken left wrist.
Landry Jones threw three touchdown passes but was intercepted twice for Oklahoma. Aldon Smith returned one 58 yards to set up a touchdown in the first quarter and Zavier Gooden's pick in the fourth quarter led to a field goal, but only after Missouri had first-and-goal from the 1.
Jackson's touchdown gave Missouri a 26-21 lead with 12:43 to go. Quarterback Blaine Gabbert was lined up as a wide receiver on backup James Franklin's 3-yard run with 6:36 left.
Trey Millard's 3-yard run cut the gap to nine only 30 seconds later after Mossis Madu's 77-yard kickoff return, but the conversion pass fell incomplete and a subsequent onside kick failed when an Oklahoma player touched the ball before it went 10 yards.
The Sooners had two turnovers and both were costly. One led to a Missouri touchdown and the second handed it over at the Tigers 13.
The giveaways helped Missouri take a 17-14 lead, the first time the Sooners trailed at the end of a quarter all season. Grant Ressel kicked a 36-yard field goal on the final play of the half after the Tigers called timeout with one second to go after a short gain, nearly squandering the scoring chance.
Missouri twice led by a touchdown earlier in the game, opening with a bang on McGaffie's kickoff return TD and capitalizing on Smith's 58-yard interception return that led to De'Vion Moore's 1-yard run early in the second quarter.
James Winchester recovered Carl Gettis' fumble on a punt, giving Oklahoma a second chance after going 3-and-out on its opening possession. Kenny Stills was wide open on a 27-yard touchdown pass to cap a four-play, 45-yard drive.
DeMarco Murray, who broke Steve Owens' 51-year-old school career touchdown record last week, got his 59th on a 4-yard swing pass to cap a 14-play, 89-yard drive that tied it at 14 late in the second.
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