Castle's win marked the second time in more than a half-century that one franchise went back-to-back with the top-rookie honor. Minnesota’s Andrew Wiggins (now of Miami) and Karl-Anthony Towns (now of New York) were voted rookies of the year in 2015 and 2016, respectively.

As a result of receiving more votes than Atlanta Hawks forward Zaccharie Risacher and Memphis Grizzlies swingman Jaylen Wells for the award, Castle became fourth player in Spurs history to be named Rookie of the Year. He joins Victor Wembanyama (2024), Tim Duncan (1998), and David Robinson (1990).