Complex sentence: In 1966 he won the USGF championship in floor exercise and represented the United States in the 1966 Maccabiah Games, winning four Gold Medals in Gymnastics.
Split into simpler sentences: In 1966 he won the USGF championship in floor exercise. He represented the United States in the 1966 Maccabiah Games, winning four Gold Medals in Gymnastics.