Evans, whose injury dates to the preseason, hasn't played since the first two games.
"We say we're day to day on it, but you know, he hasn't practiced. He's going to need some practice. It's been very disappointing; no one's been more surprised than all of us."
Smith, who was injured on the season-opening kickoff against Pittsburgh, hasn't practiced or played since then. He was seen doing light jogging Friday.
Guard Ben Grubbs (toe) was listed as questionable for the third week in a row after his toe was stepped Thursday in practice.