Complex sentence: Park won a gold medal by beating a US amateur champion Kevin Bryant in the final at World Cup Boxing in 1985, and was awarded the Light Middleweight Gold medal at the 1988 Summer Olympics.
Split into simpler sentences: Park won a gold medal by beating a US amateur champion Kevin Bryant in the final at World Cup Boxing in 1985. Park was awarded the Light Middleweight Gold medal at the 1988 Summer Olympics.