Less certain is how often Thomas will carry the ball when he joins a Saints backfield that is starting to look a little crowded after being injury-riddled much of the season.
"I don't know (what my role will be). That's up to the coaches," Thomas said. "I just know when my name is called, I'm going to take advantage of my opportunities. That's the only way I'm going to be able to prove myself to everybody that I'm back and I'm myself again and that this injury is not holding me back."
"Chris has done a number of good things, and I don't want to affect his snap count at all in regards to his carries," Payton said. "He's a different type of runner than either Pierre or Reggie. ... He runs hard. I thought he ran well (last Sunday in Cincinnati)."
Ivory gained 117 yards on 15 carries, including a 55-yard touchdown, in the Saints' 34-30 victory over the Bengals. He pounded his way in for a couple short touchdowns against the Dallas Cowboys on Thanksgiving and rushed for 99 yards and a score in a triumph over the Seattle Seahawks three games ago.
For all of Ivory's success, he said: "I've never looked at myself as a No. 1 guy."
"When my number is called, I'm just going to go out and just do what Chris can do," Ivory said. "I'm not really focused on, am I still going to get these carries, or are they still going to play me as much? ... I've got a role on this team."
When Bush and Thomas were hurt, the Saints generally played a rotation of three tailbacks: Ivory, Julius Jones and Ladell Betts. Betts, who missed the past two games with a neck injury, was placed on season-ending injured reserve Wednesday. Jones remains on the squad.
Bush's comeback has been slow statistically.
In his first two games back, Bush carried the ball six times for 27 yards and caught four passes for 12 yards. When Bush was given an opportunity to return one punt in Dallas, he fumbled it.
Bush said he's "starting to feel more comfortable" and can sense that his presence has been a distraction for defenses, allowing other parts of New Orleans' offense to thrive.
"I know definitely any time I'm on the football field, they have to be aware of where I'm at at all times, because if not, they're going to get burned," Bush said. "That's not just because of me, but because of the way Coach Payton designs some of the mismatches."
Last season, Thomas often handled inside runs, a role the powerful, tackle-breaking Ivory seems to have taken over. But no one in New Orleans' backfield has shown they can run screens as well as Thomas, who turned those plays into long touchdowns in last season's NFC title game and the Super Bowl.
Guard Jahri Evans said Thomas has superb chemistry with the offensive line and a knack for setting up blocks on screens.
"Pierre has a bond with us a little bit. We know his running style, and he's done a great job on the screens," Evans said. "It'll be good to have him back there in those situations and just running the ball, period. But I don't think we'll totally take Chris Ivory out of the game. He's been running well, so I don't see that happening at all."
Copyright 2010 by The Associated Press