Detroit Pistons (2018–2020) On June 21, 2018, Brown was drafted 42nd overall by the
Detroit Pistons in the
2018 NBA draft. He made his NBA debut on October 17, 2018, against the
Brooklyn Nets, scoring no points with two rebounds and an assist in 19 minutes of action. On November 2, 2019, he posted 22 points and seven assists, with no turnovers, in a 113–109 win over the Nets. On February 2, 2020, Brown recorded 19 points, 10 rebounds and eight assists in a 128–123 overtime victory over the
Denver Nuggets.
Brooklyn Nets (2020–2022) On November 19, 2020, Brown was traded to the
Brooklyn Nets in a three-team trade. On February 23, 2021, Brown scored a career-high 29 points in the Nets' 127–118 win against the
Sacramento Kings. On April 23, 2022, he scored a team leading 26 points for the Nets in a losing effort against the Celtics in the first round of the NBA playoffs. The Nets fell to 0–3 after that game. His performance in games 2 and 3 were notably impressive, as he scored 23 or more points in both contests, despite eclipsing 20 points only four times throughout the entire regular season.
Denver Nuggets (2022–2023) On July 7, 2022, Brown signed with the
Denver Nuggets. He signed a two-year contract worth $13 million, with a player option on the second year. The Nets had chosen not to match the Nuggets'
taxpayer mid-level exception offer for Brown and acquired
Royce O'Neale as a replacement instead. On November 23, Brown recorded a
triple-double with 17 points, 13 rebounds and 10 assists during a win against the
Oklahoma City Thunder. In 2023, Brown and the Nuggets reached the
NBA Finals where they defeated the
Miami Heat in five games to give Brown his first
NBA championship. In game 4 of the series, Brown scored a pivotal 21 points, including 11 in the fourth quarter, to help Denver open up a 3–1 series lead with a 108–95 victory over the Heat. In Game 5, Brown scored the winning points on a layup off an offensive rebound with just over 90 seconds left in the game, and hit two free throws to make it a two-possession game with less than 30 seconds remaining as the Nuggets defeated Miami 94–89 to win their first championship in franchise history after a 47-year drought.
Indiana Pacers (2023–2024) On July 6, 2023, Brown signed a 2-year, $45 million contract with the
Indiana Pacers. He saw an increased role in Indiana, earning a starting position as the highest-paid Pacer for the
2023–24 season. On October 25, 2023, Brown impressed in his Pacers debut, scoring a team-high 24 points with a career-high 6-of-8 three-point shooting performance, along with three rebounds and a steal in a 143–120 win over the
Washington Wizards.
Toronto Raptors (2024–2025) On January 17, 2024, the Pacers traded Brown, along with
Jordan Nwora,
Kira Lewis Jr. and three first-round draft picks to the
Toronto Raptors in exchange for
Pascal Siakam.
New Orleans Pelicans (2025) On February 6, 2025, the Raptors traded Brown,
Kelly Olynyk and multiple draft picks to the
New Orleans Pelicans in exchange for
Brandon Ingram.
Return to Denver (2025–present) On July 9, 2025, Brown signed a one-year contract with the
Denver Nuggets, returning to the franchise for a second stint. ==Career statistics==