Alabama will meet Ohio State in the Allstate Sugar Bowl while Oregon will face Florida State in the Rose Bowl on Jan. 1 in the first College Football Playoff semifinals.
The winners will meet Jan. 12 in Dallas for the national championship.
The CFP selection committee revealed is final rankings on Sunday, a day after Ohio State pummeled Wisconsin, 59-0, in the Big Ten championship game.
That was enough to propel the Buckeyes over Big 12 co-champions Baylor and TCU for the final playoff berth.
Alabama, which defeated Missouri, 42-13 for the SEC title, and Ohio State met in the in 1978 Sugar Bowl with the Crimson Tide winning, 35-6.
Defending national champion Florida State had been No. 4 last week, but was elevated to No. 3 after its 37-35 victory against Georgia Tech in the ACC title game.
The Seminoles will be meeting Oregon at the same site where they won the final BCS title last season.