The win helped Oklahoma State be named the No. 6 team in the AP's poll, but Oklahoma's victory in Norman didn't impress voters too much.
OU's ranking comes after a 56-14 win in which Baker Mayfield threw for four touchdowns and the defense held Tulane's offense scoreless during the game's final three quarters.
One of the biggest questions this offseason was how the defending national champions would replace quarterback Deshaun Watson, and Bryant has done that remarkably smoothly in his first three games as a starter. The Sooners got the other first-place vote.
Kentucky still isn't in the top 25 but the Wildcats are getting closer.
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OU, which had two first-place votes last week, is still receiving a No. 1 nod from The Wichita Eagle's Kellis Robinett.
- No. 17 Mississippi State made the biggest move among the newcomers, entering the rankings for the first time this season at No. 17. Buyer beware on that front, though, as they will face No. 1 Alabama (home), No. 24 Florida (road), No. 13 Georgia (home) and undefeated Ole Miss (road) the next four weeks.