We've had troll-ball, shield wrestling, and other odd things. Someone,
somewhere, might get inspiration from the ancient and noble sport of
Shin Kicking.
Article and video here:
http://www.soglos.com/sport-outdoor/28241/British-Shin-Kicking-
Championship-2008-review
It's a form of wrestling... sort of. And the new British champion is
one of my sword-brothers from the Aisle O'Var backswording club, so I'm
biased.
Here's the official site, complete with rules.
http://www.daeschner.com/skab/index.html
I doubt if anyone has Shin Kicking on their character sheet (yet), but
I'd rate it as mainly wrestling with large augments from endurance
(having your shins kicked hurts).