Radja was on Friday part of 13 members, including the likes of Steve Nash, Jason Kidd, Grant Hill, and Maurice Cheeks, who were named in the 2018 Naismith Hall of Fame class.
Born in Split, Croatia, Radja was considered one of the greatest European players of his generation, playing four seasons for the Boston Celtics.
He was a member of the Jugoplastika team of the late 1980s and the early 1990s, which he helped to win two EuroLeague titles.
Radja joined the Celtics in the summer of 1993 and was immediately voted to the NBA All-Rookie Second Team, along with fellow Croatian Toni Kukoc, who was at that time a rookie with the Chicago Bulls.
The Hall of Fame Enshrinement Ceremony took place on Friday in Springfield, Massachusetts.