John Prokop Bio
John Prokop (born May 13, 2001) is an American professional ice hockey defenceman for the Toronto Marlies of the American Hockey League (AHL) while under contract to the Toronto Maple Leafs of the National Hockey League (NHL). Standing 6 feet 3 inches tall and weighing 191 pounds, he plays the game with poise well beyond his years and reads plays from the blue line with composure.
He played college ice hockey at Union College, where he emerged as one of the most productive defencemen in the program’s modern history. Prokop signed his first professional contract with the Toronto Maple Leafs organization in March 2025 and was assigned to the AHL affiliate Toronto Marlies for the remainder of that season.
Early Life and Background
John Prokop was born on May 13, 2001, in Wausau, Wisconsin, USA. Wausau has long produced competitive winter athletes, and Prokop grew up surrounded by a strong local hockey culture that emphasized skating, puck skills, and two-way play. His size and mobility were apparent at a young age, traits that later helped him project as a college-level defenceman.
He progressed through youth hockey in Wisconsin before making the jump to the United States Hockey League (USHL), the top junior league in the United States. That pathway reflected a clear family and personal commitment to developing his game at the highest amateur level available before enrolling in college.
Path to Hockey
Prokop began his junior career with the Omaha Lancers of the USHL during the 2018–19 season, recording four assists in 25 games. He moved through several USHL franchises over the next three seasons, gaining valuable experience in a league widely regarded as the primary pipeline to NCAA Division I hockey.
During the 2019–20 season, he started with the Muskegon Lumberjacks, where he posted one goal and one assist in 11 games. On November 14, 2019, he was traded to the Green Bay Gamblers in exchange for Dylan Wendt, finishing that campaign with one goal and six assists in 30 games. He was also named to the 2019 USHL/NHL Top Prospects Game, a notable recognition of his upside.
He then spent two seasons with the Des Moines Buccaneers, producing one goal and 11 assists in 46 games in 2020–21 and one goal and 14 assists in 58 games in 2021–22. Assistant coach Josh Hauge began recruiting Prokop while at Clarkson, and when Hauge was named head coach at Union College prior to the 2022–23 season, Prokop committed to play college hockey for the Dutchmen.
John Prokop Career
Early Career (2018–2022)
Prokop’s formative years were spent entirely in the USHL, where he learned to adjust to different systems and teammates in quick succession. His trade from Muskegon to Green Bay in November 2019 forced an early test of his adaptability, one he answered with steady offensive production down the stretch.
His selection to the 2019 USHL/NHL Top Prospects Game confirmed his standing among the top young American-born defencemen of his draft class. Two strong seasons in Des Moines rounded out his junior resume and prepared him to contribute immediately at Union College.
Union College Breakthrough (2022–2024)
During the 2022–23 season, his freshman year at Union, Prokop appeared in all 35 games and recorded a team-high 23 points on four goals and 19 assists. He became the first rookie defenseman in Union’s NCAA Division I history to lead the team in points, an achievement that highlighted his offensive instincts and reliability. Following the season he was named to the All-ECAC Rookie Team.
As a sophomore in 2023–24, Prokop led the Dutchmen in scoring with eight goals and 27 assists in 36 games. He posted one goal and nine assists in six games to lead Union in scoring during November, recording three multi-point games and at least one point in every contest that month. That run earned him the ECAC Hockey Defender of the Month award for November 2023. In conference play he led the team with six goals and 18 assists for 24 points and was named a finalist for ECAC Hockey Player of the Year. He finished the year as a unanimous All-ECAC First Team selection and an AHCA East Second Team All-American.
Toronto Marlies Era (2025–Present)
On March 20, 2025, Prokop signed a one-year contract with the Toronto Maple Leafs of the NHL, beginning during the 2025–26 season. He was immediately assigned to the Maple Leafs’ AHL affiliate, the Toronto Marlies, for the remainder of the 2024–25 season. The contract runs through the 2025–26 campaign, giving him a full season to establish himself in the professional ranks.
Driving Style and Strengths
Prokop is best known for his offensive instincts from the blue line. He quarterbacks power plays, walks the line with patience, and uses a hard, accurate shot when lanes open. His 6-foot-3 frame and mobility allow him to defend rushes effectively while still joining the attack, a combination that made him a focal point of Union’s offense in both of his college seasons.
Notable Events and Milestones
Prokop’s selection to the 2019 USHL/NHL Top Prospects Game marked him as a high-upside defenceman at an early age. His record-setting freshman campaign at Union, becoming the first rookie defenseman in program history to lead the team in points, remains his signature collegiate milestone, followed by his unanimous All-ECAC First Team recognition as a sophomore.
John Prokop Career Wins
John Prokop’s statistical portfolio is still in its early professional stages, so verified win totals at the AHL and NHL level are not yet available. His body of work to date centers on production and accolades rather than championship hardware, and his career wins section will be updated as he accumulates professional victories.
John Prokop Family
Family Background and Racing Lineage
Detailed information about John Prokop’s parents and immediate family is not publicly documented in verified sources. His upbringing in Wausau, Wisconsin, placed him in a region with deep hockey roots that helped shape his development as a defenceman.
Personal Life
John Prokop is not publicly known to be married and does not have publicly documented children. He resides in the Toronto area while playing for the Toronto Marlies, the AHL affiliate of the Toronto Maple Leafs.
2025 Season Performance
Prokop signed with the Toronto Maple Leafs organization in March 2025 and was assigned to the Toronto Marlies for the remainder of the 2024–25 season. The transition from NCAA standout to professional rookie marks his first extended exposure to the AHL, where he is expected to refine his defensive details while continuing to provide offense from the back end.
His contract runs through the 2025–26 season, which will represent his first full professional campaign. Development plans within the Maple Leafs system are centered on adjusting to the pace and structure of pro hockey, building strength, and earning trust on special teams.
Outlook for the 2025–26 season points to Prokop competing for a regular role with the Marlies while remaining on the Maple Leafs’ depth chart as a left-shot defenceman with offensive upside. Continued production at the AHL level could position him for his first NHL recall during the season.