TOKYO (Reuters) - Japan's top-ranked sumo wrestler Hakuho, who holds a record 45 tournament wins, intends to retire after struggling with injuries in recent years, NHK public television reported on Monday.

Hakuho, 36, made his sumo debut in 2001 and fought his way up to the top rank of yokuzuna in May 2007, becoming the second Mongolian native to hold that rank.