Recommendation: If Mendenhall exhibits trouble handling the altitude at Denver (or perhaps if his fumble issues still plague him), Willie Parker might get more involved in the offense since he said his health issues (turf toe, illness) have improved. However, whether it's Mendenhall or Parker, the Steelers have a tough task at hand Monday night. The Broncos are allowing an average of just over 86 yards on the ground per game and have given up only three rushing touchdowns this season.