John Orozco

Reigning Olympic champ Uchimura eyes breakthrough for Japan

Kohei Uchimura has nothing left to prove. The only question surrounding the effortlessly elegant 27-year-old is if he is the greatest male gymnast of all time.

Another Olympic all-around title to bookend the one the Japanese captured in London four years ago would settle the debate for now and perhaps for good. Yet Uchimura is far less concerned with adding to his ever-growing collection of personal bling — he's won a record six world championships to go with that Olympic gold — and more focused on helping his country return to the top of the podium.

Japan ended a lengthy losing streak to rival China when it triumphed at the 2015 world championships. Uchimura...