Last Updated on April 17, 2026 by Mat Diekhake

Justin D’John Simon is an American professional basketball player known for his defensive prowess and versatility on the court.

Player Profile

  • Full Name: Justin D’John Simon. (St. John’s University Athletics)
  • Nickname: Unverified.
  • Nationality: American / USA. (fiba.basketball)
  • Date of Birth: May 6, 1996. (fiba.basketball)
  • Hometown: Temecula, California, United States. (University of Arizona Athletics)
  • Height: 6’5″ (196 cm). (fiba.basketball)
  • Weight: About 215 lbs / 97-98 kg. (NBA G League Stats)
  • Wingspan: Roughly 7 feet; a pre-draft measurement listed him at 6’11.25″. (Illawarra Hawks)
  • Shoe Size: Unverified.
  • Jersey Number (college and NBA):
    • Arizona Wildcats — #3.
    • St. John’s Red Storm — #5.
    • NBA — No regular-season NBA jersey number verified; he went undrafted in 2019 and did not log an NBA regular-season stint. In the G League with the Windy City Bulls, he wore #5. (RealGM Basketball)
  • Position: Guard / wing.
  • High School: Temecula Valley High School; Brewster Academy. (University of Arizona Athletics)
  • College: Arizona (2015-16); St. John’s (2017-19). (University of Arizona Athletics)
  • NBA Draft: 2019, undrafted, no team, no pick.
  • Teams Played For:
    • Arizona Wildcats (2015-16)
    • St. John’s Red Storm (2017-19)
    • Windy City Bulls (2019-20)
    • Illawarra Hawks (2020-21)
    • ratiopharm Ulm (2021)
    • MHP RIESEN Ludwigsburg (2021-22)
    • Sydney Kings (2022-23)
    • Scaligera Verona / Tezenis Verona (2023)
    • Bnei Herzliya (2023)
    • Paris Basketball (2023-24)
    • MHP RIESEN Ludwigsburg (2024-25)
    • ratiopharm Ulm (2025-present). (Euroleague Basketball)
  • Championship Rings: No NBA championship rings; he won the 2023 NBL title with the Sydney Kings and the 2024 EuroCup with Paris Basketball. (Euroleague Basketball)
  • Children: Unverified.
  • Siblings: Two brothers, Kem and Zak, and one sister, Hunter. (St. John’s University Athletics)

Player Archetype / Play Style

Justin Simon’s player archetype is that of a defensive playmaking wing, a long, athletic guard-sized stopper whose value starts with disruption on one end and connective offense on the other. At 6-foot-5 with roughly a seven-foot wingspan, he has the reach, strength, and mobility to crowd ball-handlers, switch across matchups, and make life difficult for wings and guards alike, which lines up with official descriptions of him as a player who can guard one through four and with the defensive awards he won at St. John’s, in Australia, and in Germany. Offensively, his role is more secondary creator than featured scorer: he is most useful pushing pace after stops, attacking gaps in transition, slashing into the lane, and keeping possessions moving instead of trying to live off high-volume shot creation. The overall play style is high-motor, versatile, and pressure-based, with his best stretches usually coming when his defense is turning the game messy and fast. (Illawarra Hawks)

Sources:

St. John’s University Athletics — Justin Simon – Men’s Basketball – St. John’s University Athletics
University of Arizona Athletics — Justin Simon – Men’s Basketball – University of Arizona Athletics
St. John’s University Athletics — Justin Simon Earns BIG EAST Defensive Player of the Year Honor
Illawarra Hawks — Huge night for the Hawks as the club celebrates season 2021 in style | Illawarra Hawks
National Basketball League — Justin Simon Joins Kings
Windy City Bulls — WINDY CITY BULLS ANNOUNCE 2019-20 OPENING NIGHT ROSTER FOR TEAM’S FOURTH SEASON – Windy City Bulls
Euroleague Basketball — JUSTIN SIMON Profile | EuroCup
Paris Basketball — Justin Simon, new player for Paris Basketball
FIBA Basketball — Justin Simon (USA) – Basketball Stats, Height, Age
RealGM — Justin Simon Player Profile, Windy City Bulls