Ron Harper Jr. signs standard deal with Celtics

BOSTON, Mass – The Boston Celtics announced on Saturday the team has signed guard Ron Harper Jr. to a standard NBA contract. Per team policy, terms of the deal were not disclosed.

Harper Jr. (6-5, 233) has appeared in 26 games (two starts) for Boston this season, averaging 3.4 points and 1.6 rebounds in 10.3 minutes per game. Converted to a Two-Way contract on Oct. 16, 2025, the 25-year-old scored a career-high 22 points (8-11 FG, 6-9 3FG, 2-2 FT) to go with three rebounds and two assists at San Antonio March 10.

In 18 NBA G League games (all starts) for Maine this season, Harper Jr. posted averages of 25.4 points, 5.1 rebounds, 3.4 assists, 1.3 steals, and 1.2 blocks in 31.2 minutes per game. He participated in the Castrol Rising Stars and Kia Shooting Stars challenges at 2026 NBA All-Star Weekend.

The New Jersey native has seen action in 37 NBA games (two starts) over four seasons with Toronto (2022-24), Detroit (2024-25), and Boston with averages of 3.1 points and 1.5 rebounds in 9.1 minutes per game. Prior to going undrafted in the 2022 NBA Draft, Harper Jr. spent four seasons at Rutgers (2018-22) where he posted averages of 12.6 points, 5.1 rebounds, and 1.4 assists in 121 career games (109 starts). He earned All-Big Ten Second Team honors his senior season after averaging a team-high 15.7 points per game and shooting a career-high 39.8 percent (68-171 3FG) from 3-point range. 

Harper Jr. is the son of five-time NBA champion Ron Harper, and his younger brother, Dylan, currently plays for the San Antonio Spurs.