John Tavares and head coach Jim Hiller will enter next season backed by a completely rebuilt Maple Leafs performance department.

Toronto announced Monday that Andy O'Brien will lead the group as vice president of sport performance, giving him control over training, sport science, nutrition, rehabilitation, and mental performance.

O'Brien is Sidney Crosby's training coach each and every summer.

The scope of the move makes this far more than a routine staff adjustment. The Maple Leafs are changing how players are prepared, monitored and brought back from injuries.

Dr. Craig Slaunwhite becomes director of health and performance integration, while Jason Martin takes over as head strength and conditioning coach.

Josh Crouse joins Martin as an assistant, with Dr. Jordan Shallow added as a human performance consultant. Toronto has installed specialists across every major layer of player care.

That structure should create clearer communication between the medical room, training staff and coaching bench when lineup decisions must be made.

Toronto targets a problem fans could see and John Chayka delivers

One fan called last season's injury handling a “clown show,” pointing to unclear recovery timelines and repeated setbacks. The wording was harsh, but the frustration behind it was widely recognizable.

Toronto's announcement doesn't promise more public medical information. It does signal that the organization wants stronger internal coordination before a player is cleared for game action.

O'Brien brings more than 25 years of experience and has already worked privately with Tavares. That existing relationship gives one of Toronto's most important veterans a familiar voice inside the new system.

His NHL résumé carries weight. O'Brien worked with 4 Stanley Cup-winning teams across stops involving the Florida Panthers and Pittsburgh Penguins.

He also helped rebuild Florida's performance and sport science program. That experience matters for a Leafs organization trying to reduce uncertainty around rehabilitation, workload and return-to-play decisions.

For Hiller, the impact could reach directly into lineup management. Better information should allow the coaching staff to make cleaner calls on practice participation, back-to-backs and whether a returning player is ready for full deployment.

The pressure won't disappear with new job titles. Toronto's revamped department will be judged by availability, fewer setbacks and whether players look physically prepared when the games tighten.

This move changes the support system around the entire roster. After a season filled with questions, the Maple Leafs have made player health a front-office priority instead of an unresolved storyline.

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Maple Leafs GM Chayka announces several firings and hirings in complete department overhaul

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