Brooklyn Nets (2018–2020) After going undrafted in the
2018 NBA draft, Pinson joined the
Brooklyn Nets for the
2018 NBA Summer League. He posted 11.2 points, 4.0 rebounds, and 2.2 assists per game in five summer league games. On August 6, 2018, Pinson signed a training camp contract with the Nets, which was confirmed to be a
two-way contract for the
2018–19 season. Under the terms of the deal, he will split time between the Nets and their
NBA G League affiliate, the
Long Island Nets. Pinson made his NBA debut on October 20, 2018, in a 132–112 loss to the
Indiana Pacers, scoring two points with a rebound and two assists in six and half minutes of play. On April 10, 2019, the Nets converted Pinson's two-way deal to a full NBA contract. On April 15, Pinson made his postseason debut scoring 9 points shooting 3 for 5 from the field and 3 for 4 from 3. On July 8, 2019, the Nets re-signed Pinson to a reported two-year contract, after the Nets rescinded their qualifying offer to Pinson on July 6. In December 2019, Pinson began to see more minutes for the Nets due to an Achilles injury to
David Nwaba. On February 4, 2020, Pinson scored 32 points to go with nine rebounds, three assists and two steals in the G League as the Long Island Nets defeated the
Wisconsin Herd 117–110. On June 23, Pinson was waived by the Nets.
New York Knicks (2020–2021) Three days later after leaving the Brooklyn Nets, on June 26, 2020, Pinson was claimed off waivers by the
New York Knicks. On November 19, 2020, the Knicks announced that they did not exercise the team option on Pinson, making him a free agent. On November 29, the Knicks re-signed Pinson to a two-way contract with the
Westchester Knicks.
Maine Celtics (2021) Pinson joined the
Milwaukee Bucks for the
2021 NBA Summer League. On September 28, 2021, Pinson signed with the
Boston Celtics, but was waived at the end of training camp. On October 23, he signed with the
Maine Celtics as an affiliate player. Pinson averaged 16.4 points, 4.4 assists, 4.6 rebounds, and 1.3 steals per game. He signed a second 10-day contract with the Mavericks on December 31. He signed a two-way contract on January 10, 2022. On July 1, 2022, Pinson re-signed with the Mavericks on a one-year deal. In the last game of the
2022–23 season, he recorded his first triple-double in a 117–138 loss to the
San Antonio Spurs. On October 29, 2023, Pinson re-joined the
Texas Legends. On January 19, 2025, Pinson announced his retirement from professional basketball to focus on his family and broadcasting career.
Mets de Guaynabo (2025) In May 2025, Pinson returned to his basketball career and signed with
Mets de Guaynabo of the
Baloncesto Superior Nacional (BSN). ==Career statistics==