Five years ago, White didn't even know what handball was until he was spotted by recruiters from UK Sport's Sporting Giants programme while playing as a semi-professional football goalkeeper.
After two seasons making the grade in Denmark, he moved into the Greek League before spending last season in France, the home of the current Olympic and world champions.
"Handball wasn't my first love, but I am 100 percent into it now," said White.
"It's just the sport for me. In football, you can go 20 minutes or longer without touching the ball and it seems so mundane looking back at all those days I spent out on a Saturday afternoon in the sticks.
"In handball, you're involved every couple of minutes and can have a really big impact on the game as a keeper and I absolutely love it."
Some fear though that White may be involved more than he would like.
Great Britain's men face group games against Sweden, Argentina, Tunisia and Iceland and start their campaign at the Copper Box with a daunting clash against Olympic and world champions France on Sunday.
White has formed a close bond with coach Dragan Djukic and admits to being disappointed this Olympic campaign will be his last involvement in the team, with a new job waiting in Israel post-Games.
"I'm immensely proud to be the first man to lead out a Team GB men's handball team at the Olympics," he adds.
"I try to bring a calming influence to the dressing room with the boys. There's new experiences for us every day but I'm keeping the boys' feet on the ground and not letting them get sucked away by any distractions.
"One of the key reasons why I am captain is because I do have such a good relationship with the coach. A lot of the time the lads are too nervous to approach him because he's quite a serious character.
"We've got a very young squad and it's nice to be looked up to as one of the older members, and be one of those guys who can go to the coach if there are any problems."
But if White was unclear about the task ahead he was given a timely reminder on Tuesday night as Hungary thrashed Team GB 44-12 in a their final warm-up match.