Overview
- ESPN’s Shams Charania first reported the change on Wednesday, June 17, and multiple local and national outlets corroborated it.
- Booker will move from No. 1, which he has worn since being drafted in 2015 and while compiling franchise milestones, to No. 15 for the 2026–27 season.
- He has said the number links to his Team USA uniform and to his father Melvin Booker, who wore No. 15 at the University of Missouri.
- The switch creates an immediate roster logjam because center Mark Williams wore No. 15 last season and is a restricted free agent who would need a new number if retained.
- The Suns have publicly reaffirmed that they will continue to build around Booker, so the change is likely to be resolved through roster and cap decisions this offseason.