PITTSBURGH -- walked down the hallway Wednesday with no . He stood by his locker and said, "." Twice. But then, when the running back with the hyperextended knee was asked if that "great" meant great enough to play Saturday night, he smiled and said, "Obviously, I'm taking it day by day." said the would operate Silvio De Sousa Jersey this week as if they won't have Bell in vs. the rival . The signed veteran running back , cast off by both the and the this season, Tuesday. And even as Tomlin said he'd "" for the team MVP and Bell's teammates said they were holding out hope, the focus Wednesday was on readying undrafted rookie ."The expectation level is high. He's got big shoes to fill if 2-6 can't go," quarterback said. "We'll see what happens, but we've got confidence in him."In coming in after Bell was hurt Sunday night, Harris did show off his speed in a 59-yard run. It was ultimately called back after a late flag for holding, but Roethlisberger said he thought that run had to aid Harris' confidence -- and maybe even send a me sage to the that they should respect the ' backup.For his part, Harris said both receiver and tight end have pulled him aside and talked to him about "staying calm." As a reporter asked Harris about the added pre sure, linebacker walked by and said, "There's no pre sure. Don't put that in his head."Harris very coolly said the best thing he can do "is make sure I have a really good week of practice. You play how you practice." He said his coaches are purposely not trying to overload him, but he's excited to show he can both catch the ball, and revel in blocking well just as much as Bell does. He quietly huddled with Bell in the locker room after talking to reporters and several said although Harris is shy, he has not been wary of asking for advice.Tomlin, meanwhile, cautioned against expecting too much from Tate. Roethlisberger said at most, there might be a package of "a few runs here, a few pa ses there" for him. He said Tate stood up in the ' team meeting room this morning and told his new teammates he's "just here to help us win."Roethlisberger said he didn't know how -- or if at all -- the ' offense would change if Bell is indeed out and the running back group wears these new faces. But he was reminded that the last time the and met, Nov. 2, the won by 20. And as a team only had 55 rushing yards. So maybe, as Tomlin said Tuesday, losing Bell isn't the end-all. The latest Around The NFL Podcast and predicts who will advance. Find more Around The NFL content on . Vaughn Taylor Jr. Jersey