MARLBOROUGH, Mass. — The Marlborough community is mourning the passing of longtime Marlborough High School football coach Sean Mahoney, who died following a courageous battle with Multiple System Atrophy (MSA), a rare and aggressive neurodegenerative disease.
Coach Mahoney was a fixture on the Marlborough sidelines for years, known as much for his character and mentorship as his playbooks. Players, past and present, described him as a father figure who taught toughness, discipline, and compassion in equal measure.
“Coach Mahoney didn’t just teach football. He taught us how to be men,” said a former player. “He showed up for us every day, even when MSA was taking so much from him. That’s who he was.”
Multiple System Atrophy is a rare, progressive disorder that affects movement, balance, and automatic body functions. There is no cure. Despite the diagnosis, those close to Mahoney say he faced the disease with the same grit he demanded from his teams — quietly, without complaint, and focused on others.
Tributes poured in from Marlborough Public Schools, alumni, and rival coaches across the region. The Marlborough High athletic department lowered flags and held a moment of silence Monday, honoring a man many called “the heart of Panther football.”
“Sean gave his life to these kids and this city,” the district said in a statement. “His impact on Marlborough High School cannot be measured in wins and losses. It’s measured in the young men he helped shape.”
Mahoney is survived by his family, who asked for privacy as they grieve. The family thanked the community and MSA researchers for their support during his illness.
Funeral arrangements have not yet been announced. The school is planning a memorial to celebrate Coach Mahoney’s life and legacy.
He was a coach, a mentor, and a fighter to the end. Marlborough won’t be the same without him on Friday nights.
Rest easy, Coach.
Marlborough Mourns Beloved Football Coach Sean Mahoney After Courageous Battle With Rare Disease MSA
