Shannon Sharpe: For Tom Brady, proving he can keep going is bigger than any urge to retire | UNDISPUTED

Shannon Sharpe and Skip Bayless both agree with Joe Montana, who had this advise for the 7 time Super Bowl champion Tom Brady: 'Play as long as you can.' Hear why they believe the Tampa Bay Buccaneers quarterback is more driven to prove he can continue to play at a high level past the age of 45 than he is to retire.