LEXINGTON, Ky. (AP) - The Southeastern Conference's six-year streak of national championships could be in jeopardy.

And the SEC has expansion to thank for making it happen.

No. 9 Texas A&M and Missouri are making their presence felt since the SEC invited them into the fold.

The Aggies (8-2, 5-2 SEC) rolled into Tuscaloosa and knocked off defending champion Alabama 29-24 and now the SEC is by no means a lock to get into the BCS title game. The Tigers (5-5, 2-5) have beaten Kentucky and Tennessee, adding to the coaching chaos at those schools.

Auburn coach Gene Chizik says SEC teams are not teach the newcomers ``how to play football. They know how to play. I think that it's very obvious.''