Denver Broncos quarterback Peyton Manning may not have won Super Bowl XLVIII in February, but he still got a primetime spot fitting of his status in the league with an appearance on the "Late Show with David Letterman" on Monday night. And as Manning and Letterman, who both began their professional careers in Indianapolis, covered a variety of topics, Manning revealed the strength in his right arm is still not at presurgery level. Manning missed the 2011 season after having spinal fusion surgery, his fourth procedure on his neck. Read more http://espn.go.com/nfl/story/_/id/1...denver-broncos-recovery-remains-ongoing-fight