Original sentence: Gotch reigned as the World Heavyweight Champion from his victory over Georg Hackenschmidt on April 3, 1908, in Chicago, Illinois, until he retired in 1913 after beating Estonian Georg Lurich April 1 1913, in Kansas City, Missouri
Edited sentence: Gotch reigned as the World Heavyweight Champion from his victory over Georg Hackenschmidt on April 3, 1908, in Chicago, Illinois, until he retired in 1913 after being defeated by Estonian Georg Lurich April 1 1913, in Kansas City, Missouri