Denver Nuggets (2018–2025) Porter was selected with the 14th overall pick by the
Denver Nuggets in the
2018 NBA draft. He fell from a possible first overall pick to the 14th pick with the Nuggets due to reports regarding his health. The Nuggets also discussed the possibility of having him sit out for his entire first season in the NBA in relation to his back problems. On July 3, 2018, Porter signed a multi-year contract with the Nuggets. On July 19, 2018, the Nuggets announced that Porter had undergone a second back surgery and subsequently missed the entire season. On October 31, 2019, Porter made his debut in the NBA, coming off the bench with fifteen points, four rebounds, and an assist in a 107–122 loss to the
New Orleans Pelicans. On December 29, he made his first career start in the NBA, finishing with 19 points, along with six rebounds and an assist in 26 minutes in a 120–115 win over the
Sacramento Kings. He set a new career high with 25 points in 23 minutes just four days later in a win against the
Indiana Pacers. On August 4, 2020, returning from the suspension of the season due to the
COVID-19 pandemic, Porter Jr. led the Nuggets to their first victory in the
Orlando bubble, scoring a then career-high 37 points in route to a 121–113 overtime win over
Oklahoma City Thunder. On April 24, 2021, Porter scored a career-high 39 points in a 129–116 win over the
Houston Rockets. On September 27, 2021, Porter and the Denver Nuggets agreed to a 5-year, $172 million
rookie extension that will become $207 million if Porter is selected to an
All-NBA Team. He was expected to be the secondary scoring option behind
Nikola Jokić while
Jamal Murray continued to recover from a torn ACL. On November 29, 2021, having appeared in only 9 games, Porter's agent Mark Bartelstein announced Porter would miss the remainder of the
2021–22 NBA season as he would be undergoing a third back surgery. In Game 5 of the
2023 NBA Finals, Porter put up 16 points and 13 rebounds in a 94–89 win over the
Miami Heat to help the Nuggets win their first NBA championship in franchise history. On March 21, 2024, Porter put up 31 points along with his 193rd made three-pointer of the season, surpassing the previous record of 192 set by
Dale Ellis for the most made three-pointers in a season in Nuggets franchise history. On November 10, 2024, Porter scored 17 points and hit the game-winning jumper in a 122–120 victory over the Dallas Mavericks. On February 3, 2025, Porter had 36 points in a 125–113 win over the New Orleans Pelicans. On February 5, Porter put up a career-high-tying 39 points, alongside 12 rebounds, in a 144–119 win over the New Orleans Pelicans. The next day, Porter scored 30 points in 112–90 win over the
Orlando Magic. He became the first player in Nuggets history to record three straight games of 30+ points and 5+ three-pointers.
Brooklyn Nets (2025–present) On July 8, 2025, Porter and a 2032 first-round draft pick were traded to the
Brooklyn Nets in exchange for
Cameron Johnson. ==Career statistics==