Sumo wrestling is taking a beating

The man widely considered to be the greatest sumo wrestler in history has resigned, compounding a bruising few years for Japan's ancient sport.

Last week Hakuho Sho left the Japan Sumo Association (JSA), the sport's governing body, the latest in a series of resignations among yokozuna, the highest-ranking wrestlers. Now, only four of the 10 most recently retired grand champions are still in the JSA.

"It's a significant loss of high-level experience and one that hurts sumo's efforts to both find and keep young talent in the sport...