Denver Broncos kick returner Trindon Holliday is listed as doubtful on the team's injury report for Sunday's game against the Kansas City Chiefs due to a sprained ankle. Holliday did not practice this week. If Holliday does not play, Omar Bolden will handle kickoff returns and Jim Leonhard punt returns. Cornerback Tracy Porter is out with a concussion. He was injured early during last week's game against the Cleveland Browns. Right guard Chris Kuper is questionable with a sprained left ankle and migraines. He practiced on a limited basis on Friday. Running back Willis McGahee, who has been on injured reserve with a torn MCL in his right knee, is eligible to return to practice next week but cannot play until the AFC championship game, if the Broncos advance that far.