    Sentence 1: What foot was injured on Manning that  sidelined him in week 10?    Sentence 2: Under Kubiak, the Broncos planned to install a  run-oriented offense with zone blocking to blend in with  quarterback Peyton Manning's shotgun passing skills, but  struggled with numerous changes and injuries to the  offensive line, as well as Manning having bis worst  statistical season since his rookie year with the Indianapolis  Colts in 1998, due to a plantar fasciitis injury in his heel  that he had suffered since the summer, and the simple fact  that Manning was getting old, as he turned 39 in the 2015    offseason.