I am hoping someone on this forum can help me with this topic: Injuries are common in Sumo. It seems that the dohyo is configured in such a way as to almost certainly cause injuries. When a wrestler is pushed out he frequently falls. Most of these falls would be unnecessary if the dohyo was flat as it was in earlier times. At the very least shouldn't the immediate are be cleared and padded. Has there been any studies of CTE (Concussions) and Rikishi. In American football head to head contact has been outlawed. I see awful head to head contact almost everyday in the tournament. Sometimes it is incidental but often it seems deliberate. It seems to me that these two simple steps could greatly benefit the wrestlers without changing the essence of Sumo.