OXFORD, Mississippi (Ticker) -- Carnell "Cadillac" Williams made sure that No. 4 Auburn remained unbeaten and locked up a berth in the Southeastern Conference Championship game.
Williams had 237 all-purpose yards and scored a touchdown as Auburn extended its winning streak to 11 games with a 35-14 victory over SEC rival Mississippi.
After a scoreless first quarter, the Tigers (9-0, 5-0 SEC West) marched 99 yards to take a 7-0 lead on a one-yard rush by quarterback Jason Campbell with 33 seconds left in the half. Williams accounted for 32 yards on the drive.
"That was a key touchdown," Campbell said. "Ole Miss had all the momentum at that point."
On Auburn's first possession of the second half, Williams took a screen pass from Campbell 57 yards to the 2. Ronnie Brown scored one play later to make it 14-0.
"They built some momentum and when they get a little bit of a lead, it's hard to contain those kind of weapons," Mississippi coach David Cutcliffe said.
Ole Miss (3-5, 2-3 West) responded with a 64-yard scoring strike from Ethan Flatt to Bill Flowers, and the teams traded touchdowns before the fourth quarter.
But Williams returned a punt 39 yards to the 25 and Campbell cashed in from the 1 three plays later to make it 28-14 with 12:29 to go.
"I kept telling everyone that returning punts was my hobby," Williams said. "The guys have been waiting for me to get my chance to do my thing back there. It was exciting to make some plays and make some guys miss out there."
The nation's third-ranked passer, Campbell completed 11-of-22 passes for 236 yards, including a nine-yard touchdown pass to Courtney Taylor. He moved into second place on Auburn's all-time passing yardage list.
Williams added a 29-yard scoring run late in the game, finishing with 96 yards on the ground and 70 on two catches. Brown rushed for 100 yards on 16 carries.
Auburn, which has played nine consecutive weeks to start the season, gets a week off before its showdown with Georgia on Nov. 13.
"It was a great effort from our guys," Auburn coach Tommy Tuberville said. "We were fired up, but you can only get so much out of these guys. We definitely need the upcoming open date.
"We were absolutely running on fumes. At halftime our defense was gassed. They reached down deep in the second half and played better."
Flatt was 14-of-20 for 225 yards and two touchdowns for Mississippi, which has lost 10 of the last 12 meetings with the Tigers.
Auburn was in position to take the lead late in the first after Brown broke a 44-yard rush to the 3. But the Rebels stopped Brown short of the goal line twice before forcing Campbell into two incompletions to keep the game scoreless.
"We kind of got ourselves in a bind down there," Mississippi linebacker Rob Robertson said. "We needed to make those kind of plays the rest of the game."
The win clinched the Western Division title for Auburn, which will be making its first appearance in the conference's championship game since 2000.
"We've been playing for four years," Campbell said. "We would get to the end of the season and have the opportunity to go to (the championship game) and something just wouldn't work out. This year we're going back. We don't want to just go back, it's about going back and accomplishing your goals."