Rule one:
You must measure achievement by how far you've thrown something than others.
Or
Rule two:
You must measure achievement by how much faster you are then others.
or
Rule three
You must measure achievement by how many times you put a ball in a net or past your opponent.
Or
Rule four
You must measure achievement by any event governed by a clock or a measurement.
This must rule out (though there's reason to like some of these);
Rhythm gymnastics - more dance then a "sport" Diving - yes they twist, etc. but how do you measure a perfect score Gymnastics - yes, it's fun to watch and amazing, but is this any different then "Dancing with the Stars"? Equestrian - dressage must go, jumping - willing to consider remaining.
Any event with "style points".
Any comments?