Tributes have been paid to Akebono, the first foreign wrestler to reach the pinnacle of the sport of sumo, who has died aged 54. The wrestler, born Chad Rowan in Hawaii, is regarded as a pioneer after breaking down cultural barriers in the centuries-old sport to become the first non-Japanese yokozuna grand champion in 1993. He won 11 major sumo tournaments held six times a year before retiring in 2001 and turning to K-1 and professional wrestling. He was runner-up at 13 other tournaments despite being plagued by injury.