 He also gained a reputation for training some of the best wrestlers of the era, including Gotch, known as one of America's first sports superstars.Gotch, regarded as "peerless" at his peak, was the first to actually claim the world's undisputed heavyweight championship by beating all contenders in North America and Europe.He became the world's champion by beating European wrestling champion Georg Hackenschmidt, both in 1908 and 1911, seen by modern wrestling historians as two of the most significant matches in wrestling history.