John Fox says Peyton Manning's nerve damage getting better every day.

Fox speaks at NFL Combine

INDIANAPOLIS, Ind. -  

John Fox has some bad news for the other 31 NFL teams: Peyton Manning could be even better in 2013.
 
   The Denver coach says Thursday at the league's annual scouting combine that with another offseason to heal and to fine-tune his comfort with Denver's offense, the four-time MVP and reigning Comeback Player of the Year could  have a more impressive second season in the Mile High City.
 
   Fox says a year ago the Broncos were doing homework on Manning. They saw a dramatic improvement in Manning's workouts last offseason at Duke, and then with the quarterback's passing in the second half of the 2012 season.  Manning led Denver to the AFC's best record, 13-3. Fox said Manning suffered from nerve damage and it takes a long time for nerves to grow back. Fox said Peyton is getting better every day.