Gabe Remy's teammates on his Chicago Fury u18 AAA hockey team are still in shock after discovering the 18-year-old athlete died just hours after playing a game due to complications with mononucleosis. Although his teammates knew that Remy was feeling a bit under the weather, they chalked it up to flu symptoms as the hockey player insisted on playing.

Remy's teammate Joseph D'Alessandro told ABC News Chicago that the team knew that he wasn't feeling great but didn't think it was anything serious to be worried about. "[He was] hunched over a lot. Feeling really tired, said his stomach was bugging him," D'Alessandro said. "You could tell he was in a lot of pain. He said there was pain in his shoulder blade, he was throwing up out in the locker room."

Despite not feeling well, Remy told his coach that he wanted to play. "He was excited to play. We love our guys to be aggressive and to go out there and compete hard, and he never had a problem competing," Chicago Fury head coach Al Dorich told the news station.

After playing in the team's game against St. Louis on Saturday, November 10th Remy's symptoms worsened and he was rushed to the emergency room where he underwent surgery for a ruptured spleen.

Sadly, Remy passed away later that day and doctors determined that the teen had died from complications from mono, something that Remy didn't even know he had. Remy, who had just graduated high school in June, was focusing on his hockey career this year in hopes of making a junior team, the Chicago Tribune reports.

D'Allesandro told the paper that the Remy was well-liked by everyone. “I’ve known Gabe for a long time,” D’Alessandro said. “I’ve never known someone not to like Gabe. I feel like he’s always been able to bring a room together, always make people laugh and smile.” Teammate Zack Zeidel agreed. “He never had a bad day,” Zeidel said. “Even when he was feeling sick, he was smiling and happy and wanted to be at the rink and be with all the boys. I don’t think I ever saw him frown. He always had a smile.”

Understandably Remy's teammates are devastated over the loss of their young friend. "I kind of, like, expected to come to the rink today and have him here, so. I'm kind of in shock still," Zeidel told ABC News. D'Allesandro added, "I couldn't even walk toward my stuff. I kind of just sat there … I think it would have brought him some kind of comfort that he fought through that last game with all the guys that love him, and he loved.”

ABC News reports that death from mono is rare but the infection can cause an enlarged spleen or "massive enlargement of the tonsils and adenoids which can, but very seldom, lead to death."

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