I used to write a wrestling simulator and for that I would render out all the moves/holds/etc for each part of the simulator, I'm up to roughly 1800 renders for each match, so it's quite a process. To do that I essentially had to write a script for each pose and have it render, I have the renders down to under 2 minutes each. They aren't large size wise, as trying to render that many would take weeks.
I'm not a fan of a ring per say, so what I came up with that I think looks the best is a mat on the beach, two woman come together to wrestle it out - here are just some test images from that process.