Water polo, probably the hardest sport on earth... literally! One has to tread water (which is not a natural thing to do) wrestle to keep position, while fighting off a brute trying to hold you down. And be strong enough to swim back and forth 25 meters at a time, then pick up the ball and shoot it as hard as you can into a net. A net that is being guarded by giant ogres and goblins. one has to summon the wrath of a god to effortlessly manifest energy to overcome titanic obstacles.
The desert duel is a masters water polo tournament I organized to continue playing this game as a master of the sport. Master only means you are at a certain age, it doesn't necessarily mean you've mastered or played long enough to be that good. But, its implied.