Celtics add Noah Vonleh, Justin Jackson, Jake Layman, Denzel Valentine, Luka Samanic and Brodric Thomas to training camp

The Boston Celtics have finalized their training camp roster for the 2022-23 season by adding Justin Jackson, Jake Layman, Luka Samanic, Brodric Thomas, Denzel Valentine and Noah Vonleh to the roster.

Jackson (6-8, 220), 27, has averaged 6.5 points (42.6% FG, 32.1% 3-PT, 79.9% FT), 2.5 rebounds and 18.7 minutes in 255 career games (61 starts) over five NBA seasons. He spent the 2021-22 season with two NBA call-ups to Boston and to Phoenix while playing for the Texas Legends of the NBA G-League where he averaged 17.8 points, 6.2 rebounds, 2.2 assists and 1.33 steals while shooting 37.7 percent from three in 38 games.

Layman (6-8, 209), 28, has played in six NBA seasons split between Portland and Minnesota where he has appeared in 243 career games with averages of 4.8 points (46.0% FG, 30.0% 3-PT, 71.9% FT) and 1.7 rebounds in 12.8 minutes per game. The Norwood, MA native was originally selected by the Orlando Magic with the 47th overall pick in the second round of the 2016 NBA draft.

Samanic (6-10, 215), 22, spent last season playing for the Westchester Knicks in the NBA G-League where he averaged 27.9 points (54.8% FG, 36.7% 3-PT, 87.0% FT), 10.4 rebounds and 3.3 assists in 32.3 minutes per game. The 19th overall pick in the 2019 NBA Draft by San Antonio has appeared in 36 career games in the NBA in San Antonio with career averages of 3.8 points and 2.2 rebounds.

Thomas (6-5, 185), 25, spent last season as one of the Celtics’ two-way players where he averaged 15.7 points (45.7% FG, 38.7% 3-PT, 5.6 rebounds, 3.8 assists and 1.72 steals in 30.6 minutes per game for the Maine Celtics. Thomas also appeared in 12 games for the Celtics last season.

Valentine (6-4, 220), 28, has appeared in 256 career games in the NBA averaging 7.0 points (39.4% FG, 36.0% 3-PT, 78.7% FT), 3.3 rebounds and 1.8 assists in 18.8 minutes per game. The former 14th overall pick in the 2016 NBA draft by Chicago spent last season split between Cleveland and Utah in the NBA while also spending time with the Maine Celtics in the NBA G-League. While in Maine, Valentine averaged 14.6 points (44.0% FG, 35.2% 3-PT, 78.6% FT), 10.3 rebounds and 7.0 assists in 12 games.

Vonleh (6-10, 257), 27, played last season for the Shanghai Dongfang Sharks of the Chinese Basketball Association where he averaged 14.4 points (45.1% FG, 38.8% 3-PT, 71.6% FT), 9.2 rebounds, 2.1 assists, 1.75 steals and 1.32 blocks per game in 28 appearances. The former ninth overall pick by Charlotte in 2014 was born in Salem, MA and has appeared in 339 career NBA games split between Charlotte, Portland, New York, Minnesota, Chicago, Denver and Brooklyn.

Boston opens preseason action against the Hornets at TD Garden on Oct. 2, its first of four preseason contests.

Celtics sign Justin Jackson to a 10-day contract

The Boston Celtics have signed forward Justin Jackson to a 10-day contract.

Jackson, 26, has played in 248 games (61 starts) during his four-year NBA career with Sacramento, Dallas, Oklahoma City, and Milwaukee, averaging 6.6 points on 42.7% shooting (32.1% 3-PT, 79.7% FT), 2.5 rebounds, and 1.1 assists. The Houston, TX native played in 34 games last season with the Thunder and Bucks, producing 7.2 points (40.3% FG, 30.8% 3-PT, 83.8% FT), 2.3 rebounds, and 1.5 assists in 17.0 minutes. Jackson also appeared in five playoff games during Milwaukee’s championship run, scoring six points on 3-of-5 shooting.

Jackson joins the Celtics from the Texas Legends of the NBA G League, where he averaged 22.7 points (47.3% FG, 42.4% 3-PT, 79.2% FT), 7.7 rebounds, and 2.9 assists in 10 games (nine starts) this season.

Three-team NBA trade sends Trevor Ariza to Thunder, James Johnson to Mavericks

In a three-team trade today, the Dallas Mavericks have acquired forward James Johnson from the Oklahoma City Thunder. In the deal, the Mavericks sent guard Delon Wright to the Detroit Pistons and forward Justin Jackson to the Thunder. The Pistons dealt forward Trevor Ariza to Oklahoma City. The Thunder acquired a 2023 second round pick (best from either Dallas or Miami) and a 2026 second round draft pick from Dallas.

Ariza (6-8, 215) has appeared in 1,064 career games (731 starts) with New York, Orlando, L.A. Lakers, Houston, New Orleans, Washington, Phoenix, Sacramento and Portland, registering averages of 10.5 points, 4.8 rebounds, 2.2 assists and 1.49 steals in 29.7 minutes per contest. Last season the former NBA champion split the season between Sacramento and Portland. In his time with Portland, the Miami native appeared in 21 games (all starts) and averaged 11.0 points, 4.8 rebounds, 2.0 assists and 1.62 steals in 33.4 minutes per game, shooting 49.1 percent from the field and 40.0 percent from three-point range.

Jackson (6-7, 220) has seen action in 214 career games (58 starts) with Sacramento and Dallas, recording averages of 6.5 points, 2.6 rebounds and 1.0 assist in 19.5 minutes per game, shooting 43.1 percent from the floor. Last season with Dallas, the North Carolina product appeared in 65 games (three starts), averaging 5.5 points and 2.4 rebounds in 16.1 minutes per contest, shooting 84.0 percent from the free throw line.

Johnson has appeared in 634 career games (220 starts) with Chicago, Toronto, Sacramento, Memphis, Miami and Minnesota, averaging 8.0 points, 3.6 rebounds and 2.1 assists in 20.6 minutes per game, shooting 47.7 percent from the field. He was originally acquired from Minnesota on Nov. 20.