However, the fact that not standing on one leg for that final point (if, indeed, he was on one leg by that time) nullifies all bets, and also looks bad from a 'good sport' sort of way, means - in general, and not referring to Isaac - that I think someone who is genuinely on one leg would/should probably make the effort to play that last point. Just to avoid all the allegations that are now being made in this case (not on this site, so much as elsewhere).