Colts back-to-work FYI

Readiness factor: Players were very hush-hush about player-organized team activities, but they did happen, with Peyton Manning spearheading the effort. Before his neck surgery, Manning had spent time with a lot of his targets, doing the sort of offseason route work that he said is key to much of what unfolds in games. Curtis Painter did the throwing during workouts after Manning had his neck operation. Reports say Manning won't be ready for the start of camp and could miss a large chunk of it, which will hurt the team's readiness.

Biggest challenge: Holding on to people. The team could conceivably lose running back Joseph Addai, linebacker Clint Session, strong safety Melvin Bullitt, versatile offensive lineman Charlie Johnson, defensive tackle Daniel Muir and kicker Adam Vinatieri. Reggie Wayne and Robert Mathis are heading into the final years of their deals. The Colts also need to sort out high salaries for tackle Ryan Diem and corner Kelvin Hayden.

Medical report: We’ve heard good things about all the hurting Colts, but they need checkups from a slew of guys coming off injuries. It’ll start with Manning, whose surgery was in late May. Key guys who also ended last season on IR: tight end Dallas Clark(wrist), Bullitt (shoulder), Austin Collie (concussions), Jerraud Powers (arm), Hayden (neck) and Session (elbow).

Key players without contracts for 2011:Addai, Session, Bullitt, Johnson, Muir, Vinatieri.