TWO COLOR PHOTOS: PHOTOGRAPHS BY BOB MARTIN THE RIKISHI (wrestlers) gather for the tournament's opening ceremony, the Dohyo-iri. Then it's on to the shikiri, or stare-down.
TWO COLOR PHOTOS: PHOTOGRAPHS BY BOB MARTIN THE GRAPPLING lasts until a rikishi is forced from the ring or falls. Musashimaru gets Asashoryu (below) both ways.
THREE COLOR PHOTOS: PHOTOGRAPHS BY BOB MARTIN OGINISHIKI (in green) uses yoritaoshi, one of 82 sumo techniques, to throw Tokitsuumi from the ring.