New York Giants quarterback Tommy DeVito (15) Vincent Carchietta-USA TODAY Sports

Nobody was having more fun Monday night than Sean Stellato — the agent of beloved New York Giants quarterback Tommy DeVito.

DeVito’s agent was one of thousands of Giants supporters cheering as the home team took down the Green Bay Packers, 24-22, at MetLife Stadium.

But it was hard for Stellato to blend into the crowd given that he was dressed like a character straight out of “The Godfather.” Peyton Manning called Stellato “Johnny Fontane from ‘The Godfather'” on the “ManningCast.”

The Giants star’s agent went viral even before the game kicked off.

ESPN soon gave the fans what they wanted on the “Monday Night Football” broadcast. They showed Stellato’s reaction several times whenever DeVito made a big play. ESPN even caught Stellato exchanging cheek kisses with DeVito’s father in the crowd.

Credit goes to DeVito for giving both his father and agent reasons to get hyped in the stands. The Giants QB went 17-for-21 for 158 yards with one touchdown and no interceptions. He also rushed for 71 yards on 10 carries.

DeVito capped off the night with the game-winning drive with just over 90 seconds left and his team down, 22-21. The Italian-American QB went 4-for-4 for 53 yards to set up Giants kicker Randy Bullock’s go-ahead field goal as time expired.

The Giants’ upset win over the Packers was their third straight with DeVito under center. Big Blue will put their streak on the line in Week 15 against the New Orleans Saints.

Giants fans will likely be tuned in for two reasons Sunday — to watch DeVito and to see what outfit his agent will wear next.

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