Teams across the nation employed the return -- of kickoffs, punts and interceptions -- as the focal point of their victories.
Top-ranked Florida rolled by Kentucky 41-7 on Saturday but lost quarterback Tim Tebow to an apparent head and neck injury.
Florida's Percy Harvin ran routes and caught passes Tuesday, his most work since spraining his right ankle last month against Florida State.
Florida receiver Percy Harvin participated in 7-on-7 drills Tuesday, but coach Urban Meyer said he was not sure if Harvin would play in Saturday's season opener against Hawaii.
Florida may be without receiver Percy Harvin and middle linebacker Brandon Spikes for its Saturday opener against Hawaii.