(AP) – No. 6 Oklahoma vs. No. 21 Texas. While the Red River rivalry won’t be a Big 12 game too much longer, the sixtime defending Big 12 champion Sooners (5-0, 2-0 Big 12) and resurgent Longhorns (4-1, 2-0) meet this second Saturday of October at the State Fair of Texas tied with idle No. 12 Oklahoma State for the conference lead. The Sooners have a 13-game winning streak that began with their fou…