The Australian multi-events exponent took the Octathlon gold medal with a World Youth Best of 6491 points, after notching up personal bests in seven of the eight events.
Taking his title on the second day of the Championships, he could then relax and was very visibly seen around the stadium at regular intervals for the rest of the five-day event, decked out in green and yellow face paint, usually accompanied by an inflatable kangaroo, while cheering on his team mates.
There is no doubt that Stein is a larger-than-life character, even taking into account the exuberance of youth and the excitement of having proved himself on the global stage.
"Being a decathlete is like having ten girlfriends. You have to love them all, and you can't afford losing one," is the motto at the top of Stein's Twitter account.
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