Shortly after the Denver Broncos received new orange T-shirts reading ''Keep Your Feet,'' the most expensive ones on the field got tangled. When Peyton Manning took the snap and turned to hand off, the quarterback and the football both hit the turf. Manning is getting used to being under center again as he adapts to coach Gary Kubiak's run-oriented, play-action offense with all its rollouts, handoffs and mobile pockets. More...