Before the ceremony, the Patriots shared a video of Robert Kraft officially returning Brady's stolen Super Bowl jerseys.
They brought in the team's five Super Bowl championships to rally the Red Sox fans hoping that Boston will win the 2017 World Series. As they approached the pitcher's mound, Brady held up the jersey that was stolen from his locker following this year's Super Bowl.
Brady and Gronkowski were not the only members of the Patriots present during the pregame ceremony. Brady proceeded to chase Gronk around the infield, until he made the big sack in shallow right field.
It has been an unfortunate last few months for Tom Brady's jerseys.
The Super Bowl LI jersey was briefly stolen again on Monday, although the suspect wasn't as covert about it.
So, at Fenway Park for Opening Day for the Red Sox on Monday, Brady proudly displayed his jersey to the crowd of New Englanders.
Tom Brady was in Kraft's home as he received the jerseys before posing for photographs.
Here are 10 reasons why Patriots tight end Rob Gronkowski is the most fun athlete in pro sports. "It took an global trip", Kraft said in the video that was tweeted out on the team's account. "Tom Brady is on the field, and he's tackling Gronk".