Sumo's three grand champions clapped their hands and stamped their feet in a traditional New Year offering to the Shinto gods Tuesday, as the sport tries to close the book on a scandal-hit 2017. Wearing just their traditional white knotted belts -- or "kesho-mawashi" -- with colourful aprons, the "Yokozuna" champions performed the traditional ritual in front of an appreciative crowd of hundreds of fans.