Kelley (7'0", 230) appeared in 11 NBA games (two starts) last season with the New Orleans Pelicans and Dallas Mavericks, averaging 3.1 points and 3.5 rebounds in 11.5 minutes. In his first career NBA start with the Mavericks Feb. 2 at Cleveland, Kelley recorded a 12-point, 11-rebound double-double to go with one assist and one block.

In 108 career NBA G League games (58 starts) across four seasons with the South Bay Lakers (2024-25), Maine Celtics (2023-24), Raptors 905 (2022-23) and Austin Spurs (2020-21), Kelley has averaged 8.3 points, 5.6 rebounds, 1.2 assists and 2.0 blocks in 20.1 minutes. With the South Bay Lakers, the 27-year-old appeared in 32 games (27 starts) and averaged 11.5 points on a career-high 68.2 percent shooting from the field, 7.3 rebounds, 1.5 assists and 2.4 blocks in 26.7 minutes. Kelley was named to the 2024 NBA G League All-Defensive Team after leading the league in blocks per game. In addition to his NBA and G League experience, Kelley has competed internationally in Canada (2022-23), Denmark (2022-23) and England (2021-22).

Collegiately, Kelley played two seasons at Oregon State University (2018-20). Following his senior season, he earned his second consecutive Pac-12 All-Defensive Team selection after starting all 31 games and averaging 11.1 points, 5.3 rebounds and 3.5 blocks in 29.1 minutes, finishing first in the conference and second nationally in rejections per game.