Two men collapsed on the ice while playing recreational hockey at Sharks Ice in San Jose and died within hours of each other on Sunday night.
Brian Kobata, 38, of Morgan Hill was playing with his team, Mug Shots, and had just scored a goal against the A Team, when he grimaced and fell down, Kobata's wife, Heidi, said.
Two teammates tried to save Kobata, a Cal Poly graduate, by giving him CPR and using a defibrillator, a San Jose Fire Department spokesman said. Paramedics were called at 9:06 p.m. and he was taken to a hospital.
In another game that started at 11:15 p.m., Kelly Calabro, 41, of Alameda was leading his team, Beer, in a comeback against The Shenanigans, when he fell on his back. Calabro's teammates also tried CPR but failed to revive their friend.
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"It's a very unfortunate and tragic situation," said Ken Arnold, senior director of communications for Silicon Valley Sports and Entertainment, which operates the facility at Tenth Street and East Alma Avenue.
Sharks Ice, which is the official practice rink for the San Jose Sharks, is home to the largest adult hockey league in the nation, with 3,000 registered players. However, the strenuous sport can be hard on older players. Arnold said ambulances are called to the rink about once every 18 months.