Same as last year. Charlotte Dujardin and Valegro. Last time they'll ever compete, won everything there is to win for years running, new Olympic record of near perfection. What more?
of course there are serious contenders outside of the Olympics, Fromey must be in with a shout and if Hamilton wins the title he'll be knocking on the door again but probably not him as he won it in 2014.
Hamilton might make it Four world F1 titles making him Britains best ever. Laura Trott, Andy Murray is alsio a huge contender, Wimnbledon and Olympics too far till December
Gotta be Mo. Done what no man has since Lasse Viren in the 70's. And the sacrifices he makes in order to maintain that level of fitness would break most men.
If I'm allowed...Jamie Vardy, for taking struggling leicester all the way to winning the Premier League. I wouldn't chose an olympian but a proven Athlete all season not just three weeks.