Celtics' Jaylen Brown trolls doubters after winning title, earning NBA Finals MVP

Skip Bayless, Paul Pierce and Keyshawn Johnson discuss the Boston Celtics' win over the Dallas Mavericks in Game 5 of the 2024 NBA Finals.

Jaylen Brown and the Boston Celtics are in the midst of a full-fledged victory lap. 

The Celtics hoisted the Larry O'Brien Trophy on Monday night after defeating the Dallas Mavericks in five games. Although Boston dominated in their playoff games leading up to the NBA Finals, the team still faced its fair share of doubters entering the matchup with the Mavs. 

Brown apparently took notice of the lack of support. Shortly after the Celtics won an NBA record 18th championship, he showed off some receipts that he kept handy.

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Jaylen Brown of the Boston Celtics accepts the Larry Bird Trophy after winning Game 4 of the Eastern Conference Finals at Gainbridge Fieldhouse on May 27, 2024, in Indianapolis. (Justin Casterline/Getty Images)

Brown, who was named the NBA Finals MVP, posted a screenshot to his Instagram Stories showing an image of the overwhelming percentage of wagers placed favoring the Mavs over the Celtics in the championship series.

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Just over a decade ago, Brown shared a message on social media about one of his former teachers.

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"My teacher said she will look me up in the Cobb County jail in 5 years .. Wow," Brown wrote on X, formerly known as Twitter. 

Brown grew up outside of Atlanta and attended Wheeler High School in Marietta, Georgia, which is located in Cobb County. 

Celtics guard Jaylen Brown drives toward the basket during Game 5 of the NBA Finals, June 17, 2024, in Boston. (AP Photo/Charles Krupa)

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