It's still the offseason in the NFL, so there's definitely time for Bill Belichick to check out what's happening in the other pro leagues.

The New England Patriots head coach decided to spend Wednesday night at TD Garden to catch Game 1 of the 2023 Eastern Conference Finals series between the Miami Heat and the Boston Celtics, and when he was shown on the big screen with a smile on, the crowd inside the arena and folks over at Twitter reacted accordingly.

ā€œProof that Bill Belichick does smile sometimes. The Patriots head coach is present and enjoying Game 1 of the Eastern Conference Finals,ā€ ESPN's Coley Harvey tweeted.

Here's some unofficial (but entertaining) Bill Belichick stat, courtesy of Celtics writer Taylor Snow: ā€œCeltics are on a 20-5 run since Bill Belichick smiled and waved to the crowd.ā€

ā€œ#Patriots HC Bill Belichick and center David Andrews are among those in attendance at TD Garden for game 1 of Celtics vs. Heat,ā€ shared Mike Kadlick.

Belichick was also seen grabbing a slice of pizza and watching the game while sitting beside former Celtics head coach and current Boston president of basketball operations Brad Stevens.

Belichick and the Patriots are coming off a disappointing 2022 NFL season in which they finished with just an 8-9 record and missed the playoffs. However, Belichick remains one of the most trusted head coaches in the NFL, so Patriots fans can expect their team to be better this year.

The Patriots will kick off their 2023 schedule with a home game against the reigning NFC champions Philadelphia Eagles on Sep. 10.