2005 Topps 50th Anniversary Golden Moments, Joe Namath.
One of the biggest underdog stories in the NFL and in all American sports history.
Joe Namath and the New York Jets (Super Bowl III):

The New York Jets, an AFL team, were massive underdogs against the NFL's Baltimore Colts in Super Bowl III. Quarterback Joe Namath famously guaranteed a victory, and the Jets delivered, winning 16-7 and securing the AFL's first Super Bowl win. This victory helped pave the way for the AFL-NFL merger.