Marlies New Coach
Toronto Marlies Appoint Steve Sullivan Head Coach, Elevating Mark Giordano to Assistant
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Key Points
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During the 2025-26 season with the Maple Leafs, Sullivan was tasked mainly with the power play, and his presence coincided with a direct improvement in Toronto's man-advantage after Derek Lalonde was dismissed.
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The Marlies' Calder Cup championship run featured standout performances from goaltender Artur Akhtyamov and offensive contributions from Vinni Lettieri, Easton Cowan, and William Villeneuve.
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Mark Giordano, a Norris Trophy-winning former Maple Leafs defenseman, was promoted to assistant coach after serving as a coaching advisor since October 2025, praised for his communication and willingness to coach up defensive details.
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Before joining Toronto, Sullivan spent three seasons as assistant general manager of the Arizona Coyotes and worked in the team’s player development department as coach and director.
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Sullivan is 50 years old, played 1,011 NHL games with 747 points, and won the Bill Masterton Trophy in 2009.
The Toronto Marlies have named Steve Sullivan as their ninth head coach in franchise history, replacing John Gruden, who moved up to the Maple Leafs organization Sault Star. Sullivan, a Timmins, Ontario native and 1,011-game NHL veteran, steps into the role after spending the 2025-26 season as an assistant coach with Toronto's parent club, the Maple Leafs.
The move is designed to strengthen the Marlies' player development pipeline and build on the franchise's recent Calder Cup championship Cold Lake Sun. Mark Giordano, the Norris Trophy-winning former defenseman, was also elevated to assistant coach as part of the staff shake-up.
Sullivan's NHL Career and Coaching Background
Sullivan, 50, played 1,011 NHL games and scored 747 points over his career Paris Star Online. He won the Bill Masterton Trophy in 2009, an award given for perseverance and dedication to hockey. That experience as a player gives him direct credibility with young prospects trying to reach the NHL.
Before coaching, Sullivan spent three seasons as assistant general manager of the Arizona Coyotes The Observer. He also worked in the Coyotes' player development department as both a coach and director. That front-office background sets him apart from most bench coaches and gives him a broad view of how organizations build rosters.
Power Play Success Foreshadowed Sullivan's Marlies Promotion
During his one season with the Maple Leafs, Sullivan was handed a specific job: fix the power play Whitecourt Star. After Derek Lalonde was dismissed, Sullivan took over those duties. Toronto's man-advantage unit improved directly after he stepped in, signaling his ability to run an effective offensive system.
That focus on offensive structure is expected to carry over to the Marlies Sault Star. Sullivan has a reputation for developing young forwards and building systems that create scoring chances. The Marlies' roster is packed with NHL prospects who will benefit from that approach.
Calder Cup Champions Look to Reload With Young Talent
The Marlies won the Calder Cup behind strong performances from goaltender Artur Akhtyamov and forwards Vinni Lettieri, Easton Cowan, and William Villeneuve Cold Lake Sun. That championship run proved the organization's development model works. Sullivan now takes over a team built to keep producing NHL-ready players.
The Maple Leafs and Marlies operate as a tight development pipeline The Observer. Management wants Sullivan to guide the next wave of prospects toward the NHL. His blend of playing experience, development work, and front-office knowledge makes him a strong fit for that mission.
Giordano Steps Up From Advisor to Assistant Coach
Mark Giordano has been with the organization as a coaching advisor since October 2025 Paris Star Online. He was praised for his communication skills and his ability to coach up defensive details with younger players. His promotion to assistant coach is a natural next step in his transition from player to full-time coach.
Giordano won the Norris Trophy as the NHL's best defenseman and wore a Maple Leafs jersey late in his playing career Whitecourt Star. His presence on Sullivan's staff gives the Marlies a respected voice in the locker room. Together, Sullivan and Giordano bring over 2,000 combined NHL games of experience to the coaching staff.
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