Texas rises to No. 1 in AP poll, Ohio State and Oregon tumble and Michigan returns to the Top 25

The unprecedented comeback by Texas to knock off Ohio State moved the Longhorns to No. 1 in The Associated Press Top 25 college football poll Sunday and pushed the Buckeyes out of the top five for the first time in two seasons. Oregon, meanwhile, plummeted 15 spots to No. 21, its lowest ranking in four years, after its 39-31 road loss to an Oklahoma State team that had lost 21 straight against Football Bowl Subdivision opponents. Michigan, which fell out of the Top 25 after needing an extra second and second-chance Hail Mary try to beat Western Michigan a week…