Peyton Manning says he's not thinking about his place in history.
But a lot of NFL fans will be talking about his legacy if he leads the Indianapolis Colts to victory in Sunday's Super Bowl.
The star quarterback was the Most Valuable Player in the Super Bowl three years ago. The Colts are favored to beat the New Orleans Saints this time.
Joe Montana, Johnny Unitas and Dan Marino are often mentioned among the best quarterbacks ever. Manning is a four-time MVP, and another big win will lift him into an elite class.