Sumo fans these days have the privilege of being able to watch the greatest rikishi of all time live in the ring.

For a sport that's been around for a couple of millennia in one form or another that's no small thing.

While Raiden may have the highest win rate of all time, he was far larger and stronger than any of the opponents he faced in the late 1790s and early 1800s, and the pool of talent was much smaller than now.