The three-time Super Bowl champion, who announced he would retire from the NFL last month, brought the energy to the Boston Bruins pregame festivities ahead of Game 2 of the Eastern Conference First Round against the Toronto Maple Leafs.
With the fervor of having just scored a game-winning touchdown, Gronk, flanked by Special Olympics marathon runner Matt Millett, waved the Bruins flag as the crowd at TD Garden went wild.
Clad in a home black jersey adorned with David Pastrnak's number 88, Gronkowski took selfies with fans and waved a Bruins towel during the team's 4-1 victory that knotted the series at one game apiece.
