Marvin Harrison likely will miss another game when the Indianapolis Colts play the Jacksonville Jaguars on Sunday at the RCA Dome. The perennial Pro Bowl receiver has not practiced this week while recovering from a bruised left knee. He was injured against Denver on Sept. 30 and has played in only one game since. "Marvin did not practice," Colts' Coach Tony Dungy said Friday. "He's very questionable." Indianapolis expects to have several other injured players back. Offensive linemen Tony Ugoh (neck) and Charlie Johnson (hamstring) will try to improve what lately has been shaky protection for quarterback Peyton Manning. "Charlie Johnson did well; Tony Ugoh did well (in practice)," Dungy said. "I think, at this point, those guys are ready to play."