Dear GG,
While Kimura Sensei was an undoubted master of Judo he was beaten in a contest [the only time in his career ] by Kenshiro Abbe 8th Dan , founder of Kyu Shin Do .Abbe Sensei , having met him ,was in my opinion one of the greatest Martial artists ever.Abbe Sensei , was also a student of Aikido , and he was instrumental in bringing Aikido to the U.K.On a personal note , seeing Abbe Sensei and training with him in Aikido, inspired me to study Aikido.I was at that time studying Judo.As a judoka Abbe Sensei may well be the greatest ever.