Flames forward prospect Theo Stockselius, a second-round selection in the 2025 NHL Draft, battled thyroid cancer at the age of 15.

Theo Stockselius is focused on being a future difference-maker in the NHL.

The Calgary Flames ’ forward prospect is already a feel-good story.

It was three years ago this month that Stockselius was diagnosed with thyroid cancer. He’d just turned 15 at the time.

After a pair of surgeries to treat the disease, that health scare is now behind him, although he was anticipating some reminders throughout August.

“I get up some memories when I Snapchat,” Stockselius told Postmedia during development camp. “I’m just happy that I’m not in the hospital when those memories are coming up. I’m glad to be healthy.”

The Flames are glad to have him in the fold. They we

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