(note the list is not a limitation nor does it have to be an existing fantasy sport)
SPORTS:
0 gravity soccer
Quidditch
Robot Boxing
Tron
Poke battles
Card battles
Pod racers
Chariots (Yugi-oh)
Jousting (Pegasus) (mecha)
I am not sure. Typically made up fantasy/scifi games take the form of stuffing a ball through a hole, and allowing a great deal of violence on the field while trying to do that. I prefer just about anything but that... But...I am not making up all the rules of a new game for a one off scene in a book. I see why it stands in a lot.
“There are dragon sports, I would assume.”
“To be sure. When I was young I would enjoy a bit of one-on-one air hockey. The idea is to keep the, um, puck from hitting the ground. That’s a point for the other dragon.”
“Puck?”
“Oh, we would use whatever was handy—sheep, knights, boulders. We’d toss them around for hours, though some hold up better than others. Once a sheep has been spiked into the ground it’s pretty useless.”
Grissol preferred not to ask about knights. Even in full armor, he suspected they would soon need replacement.