Kelley (7-0, 230) joins Dallas after spending the 2024-25 season with the G League’s South Bay Lakers, where he appeared in nine regular-season games, making seven starts, and averaging 9.2 points (.635 FG%), 5.8 rebounds, 1.8 assists and 1.7 blocks per game. In 14 Tip-off Tournament games for South Bay, he averaged 12.1 points (.692 FG%), 7.9 rebounds, 1.6 assists and 2.9 blocks in 13 starts.
Kelley was named to the NBA G League All-Defensive Team in 2023-24 after leading the G League in blocks per game (2.86) and total blocks (83) last season.
The Gervais, Oregon, native finished his collegiate career in Oregon, where he was named to the Pac-12 All-Defensive Team in each of his two seasons with Oregon State (2019, 2020).