Tom Brady and the Patriots have really convinced themselves they're the underdogs in Super Bowl LIII ... which couldn't have been more obvious than at their send-off rally.
The Pats' QB was center stage Sunday at Gillette Stadium in Foxborough, MA for one last hurrah before the team heads out to Atlanta ahead of the big game against the Los Angeles Rams. With Blue Man Group on hand to warm up the crowd ... Brady finished 'em off by starting a battle cry that screams of defying the odds ... "WE'RE STILL HERE!!!"
The only problem .