Olympic triathlon champion Alistair Brownlee is back in London and insists all that has gone before hasn't diminished his desire for more medals.
Brownlee is looking to win the men's world title for the third time and claim his third victory in Hyde Park - where last year he achieved the pinnacle of his career with his memorable Olympic gold.
On paper he should follow the lead of British team-mate Non Stanford, who won Saturday's women's world title, though brother Jonny is second in the overall rankings and Javier Gomez within touching distance in third.
Victories for either Alistair or reigning world champion Jonny would give them the title in the final race of the season and even if Gomez wins, Alistair can still take the overall title by finishing second.
"I've achieved more than I ever set out to achieve or ever dreamed I would when I was an eight-year-old starting triathlon," said Alistair Brownlee.
"That's fantastic but it hasn't altered my motivation at all. It's just made me a bit more content.
"But as soon as I start training or stick me on a start line, I'm still the most competitive person in the world.
"And winning another world title would obviously be wonderfully special and even more so because it's in London.
"Without a doubt it would be the most satisfying one."
Jonathan Brownlee admits defending his title might be tough. Last year he won after his brother missed much of the early season with an Achilles injury and this year his only win over his elder sibling was over the sprint distance.
"Alistair tends to beat me over Olympic distance but he's had a tough year," said Jonathan Brownlee.
"Hopefully he'll be fit but it's going to be hard for him and I can beat him."
© Sportsbeat 2013