From crotch-grabbing bans to hankie requirements, check out a few of the Games' most unexpected stipulations.
Hungary's Denes Varga and Shea Buckner of the US in a match on Monday.
Image by MIGUEL MEDINA / Getty Images
Water polo: no groin-grabbing.
Water polo players can be kicked out of the game for kicking, elbowing, and any other "act of brutality" — which reportedly includes grabbing an opponent's crotch. Also not allowed: splashing an opponent in the face.
Fencing: leaving the piste is admitting defeat.
In fencing, leaving the piste (the platform where the match is held) means you accept the judges' decision about the match. When Shin A Lam lost to Britta Heidemann last Monday on a questionable call, she disagreed with the judges, so she stayed on the piste — for 45 minutes. BuzzFeed's Kevin Lincoln called it "the filibuster of fencing."
Shin A Lam sits on the piste to protest her loss.
Image by DAMIR SAGOLJ / Reuters