Between now and Wednesday, Pittsburgh Steelers defensive end Aaron Smith will undergo an MRI on his injured triceps, ESPN's Adam Schefter reports.

Smith has been out since tearing a triceps tendon in a Week 7 win over the Miami Dolphins. The team has kept the veteran on the roster with the hope that he'd be available for a deep playoff run.

"I've come to grips with it," Smith told the Pittsburgh Tribune-Review of the possibility he might miss Super Bowl XLV. "I'm holding out hope, but that's a reality I've had to deal with (for) months. I've tried optimism, I've tried pessimism. I've tried being happy. I'm just day to day. If I get an opportunity to (play,) it will be a blessing."

During his session with the media on Monday, Steelers head coach Mike Tomlin wouldn't rule out Pro Bowl center Maurkice Pouncey, who suffered a high ankle sprain and a broken bone in his left ankle during the Steelers' 24-19 win over the New York Jets in the AFC Championship Game.

Pouncey missed all of last week's practices, and remains on crutches, but the Steelers plan to aggressively treat Pouncey's ankle. Tomlin added the clock on the rookie's availability for Sunday won't start running until Wednesday.

If Pouncey is unable to play, Doug Legursky would get the start at center.