San Antonio’s Stephon Castle is the rookie of the year favorite, and that has him thinking ahead

San Antonio Spurs guard Stephon Castle (5) drives on Phoenix Suns forward Ryan Dunn during the second half of an NBA basketball game, Friday, April 11, 2025, in Phoenix. (AP Photo/Rick Scuteri)

San Antonio Spurs guard Stephon Castle (5) drives on Phoenix Suns guard Bradley Beal during the second half of an NBA basketball game, Friday, April 11, 2025, in Phoenix. (AP Photo/Rick Scuteri)

San Antonio Spurs guard Stephon Castle (5) drives on Phoenix Suns forward Ryan Dunn during the second half of an NBA basketball game, Friday, April 11, 2025, in Phoenix. (AP Photo/Rick Scuteri)

Los Angeles Clippers center Ivica Zubac (40) blocks San Antonio Spurs guard Stephon Castle (5) during the second half of an NBA basketball game Tuesday, April 8, 2025, in Inglewood, Calif. (AP Photo/Carrie Giordano)

San Antonio Spurs guard Stephon Castle (5) dribbles past Los Angeles Clippers guard James Harden (1) during the second half of an NBA basketball game Tuesday, April 8, 2025, in Inglewood, Calif. (AP Photo/Carrie Giordano)

San Antonio Spurs guard Stephon Castle (5) dunks against the Portland Trail Blazers during the second half of an NBA basketball game Sunday, April 6, 2025, in Portland, Ore. (AP Photo/Amanda Loman)