Top-ranked sumo wrestler set to retire: NHK

Japan’s top-ranked sumo wrestler is set to retire

Source: NHK

Hakuho holds a record 45 tournament wins

The Mongolian native made his sumo debut in 2001

He achieved the top rank of yokozuna in May 2007

His tenure as yokozuna is the longest in sumo history

Hakuho intends to retire after struggling with injuries in recent years

Sources say he plans to run a sumo "stable," where wrestlers live and train