Pittsburgh Steelers' safety Troy Polamalu practiced Friday and is expected to play in Saturday's AFC wild-card game against the Jaguars. Polamalu, who hasn't practiced in weeks, missed four of Pittsburgh's final six regular-season games with a sprained knee. He officially was listed as questionable on the team's injury report Friday. "He looked good enough today to be a game-time decision," Steelers' Coach Mike Tomlin said after practice, according to the Pittsburgh Post-Gazette. "I know he feels well, but we'll see." Polamalu injured the knee Nov. 18 against the Jets.