Associated Press COLUMBIA, Mo. -- Chase Daniel's Heisman Trophy stock just plummeted. Missouri's national championship hopes took a tumble, too. And how about them Oklahoma State Cowboys? No. 17 Oklahoma State stopped an offense that had been scoring at will, intercepting Daniel's passes three times in the second half and upsetting the third-ranked Tigers 28-23 victory on Saturday night. "Put it all on me," Daniel said. "I should have made all three of those throws. It seemed like we were a little bit off all night. For the reason, I have no idea." Zac Robinson and Damian Davis hooked up on a pair of long scores in the second half, and Patrick Lavine's interception at the Oklahoma State 31 with 1:41 to go was the clincher. Missouri (5-1, 1-1 Big 12) had appeared poised to challenge for No. 1 with a strong effort after top-ranked Oklahoma lost to Texas and No. 2 Alabama had the weekend off. Fast Facts • Zac Robinson tossed two touchdowns and ran for another, helping Oklahoma State to its second win in its last 36 games against top 10 teams. The Cowboys' last win over a top-10 squad came at fourth-ranked Oklahoma in 2001, when Les Miles as OSU's coach. • The Cowboys improve to 6-0, matching the second best start in school history (1997). Only the 1945 team, that finished 9-0, had a better start. • Missouri fell to 3-3 all-time when ranked in the top 3, and just 1-2 over the past two seasons. • Oklahoma State has won two straight at Missouri. -- ESPN research