Heartwarming Story of Canadian Footballer's Unexpected World Cup Call-Up: "It's a Dream Come True"

At just 18 months old, he was diagnosed with a rare form of testicular cancer. The disease later spread to his lungs. Doctors informed his parents that any active lifestyle, including sports, would be impossible for their child.

Although Nelson wasn't initially in coach Jesse Marsch's plans and was only a replacement for the injured Marcelo Flores, this might not bother Nelson at all – after all, he's part of the World Cup.

"It's a dream come true, especially with the World Cup at home and overcoming cancer. It's a huge deal. It's simply an inspiration for many people who want to achieve great things in life. I hope I can be that person they can look up to," he told torontosun.com.

When he was a child in a Toronto hospital, football perhaps unknowingly became part of his therapy. His mother and a nurse in the oncology department found a small football in a toy box. He played with it in the hallways until his friends warned him that staff were approaching.

"For me, it's more than just being part of the national team at the World Cup. It's more like great news for kids who aspire to something big in their lives," Nelson revealed.

He won't be among Canada's leaders and might not even get a start, but if he does step onto the pitch, it will be an unforgettable experience for the 23-year-old for the rest of his life. Especially since he grew up around Toronto, and that's where the country's opening match against Bosnia and Herzegovina will take place this Friday.

"My mentality when stepping onto the field won't be to protect what I've already achieved, but to try and create a new reputation every time I step on the pitch. It was simply a relief to get the call from the coach. I had been waiting for it for a long time... and it was very emotional," Nelson concluded.