Ted Williams famously said, "Baseball is the only field of endeavor where a man can succeed three times out of 10 and be considered a good performer."
While a 70 percent fail rate might work in America's national pastime, it won't get you very far in sumo.
Hakuho, widely considered the greatest of all time, has won 83 percent of his bouts but even that isn't enough to break into the all-time top five.