Stanford was the big winner in the latest BCS standings.
Both are still on track to play for the national championship on Jan. 10 in Glendale, Ariz. Auburn needs to beat South Carolina in the Southeastern Conference championship game on Saturday to lock up its spot and Oregon needs a victory at Oregon State in the Civil War rivalry.
The only difference between one and two in the BCS is No. 1 gets to wear its home jerseys.
TCU is third and in position to grab an automatic bid -- possibly to the Rose Bowl -- now that Boise State is no threat to swipe it from the Horned Frogs. The Broncos lost to Nevada 34-31 in overtime on Friday night.
TCU is also on-deck for a spot in the national championship game if one of the top two teams trip up. Boise State dropped to No. 11 and Nevada reached No. 17.
But Stanford made the most important jump of all this week, taking the fourth spot after completing its season 11-1 with a 38-0 victory against Oregon State. BCS rules ensure the top four teams in the final standings a bid to the five big-money games.
Stanford (11-1) was in danger of getting left out altogether because its fans generally don't flock to long distance bowl sites. As long as the Cardinal don't fall when the final standings are released next week -- and there's no good reason why they would -- one of the bowls will be forced to take them.
The BCS standings also broke the Big Ten's three-way tie at the top in favor of Wisconsin, which is fifth in the standings, a spot ahead of Ohio State.
Unless some strange voting takes place in the Harris and coaches' polls after Championship Saturday, the Badgers are headed to the Rose Bowl.
The Buckeyes are a good bet to land an at-large bid, but the Big Ten's other tri-champion, Michigan State, will have to settle for a second-tier game. The Spartans were eighth in the BCS standings.
Oklahoma, Oklahoma State and Texas A&M finished tied at 6-2 in the Big 12 South, but the BCS tiebreaker went the Sooners' way. Oklahoma was ninth in the standings, Oklahoma State was 14th and Texas A&M was 18th. The Sooners beat Oklahoma State 47-41 on Saturday night to make the jump up the standings.
The Sooners will play No. 13 Nebraska in the conference championship game and the winner lands a Fiesta Bowl bid.
No. 7 Arkansas moved into position for an at-large selection to the Sugar Bowl against Ohio State by beating LSU, which dropped to No. 10. The Razorbacks will be rooting for Auburn to win the SEC Championship so the Tigers do not take up their at-large spot.
Connecticut (7-4) will earn the Big East's automatic berth with a win against South Florida on Saturday, and Pittsburgh (6-5) and No. 24 West Virginia (8-3) could still earn the bid if the Huskies lose.
The Associated Press contributed to this report.