Complex sentence: Holmes turned professional in 1979 and in 1986 challenged IBF Super Middleweight Title holder Chong-Pal Park of South Korea, but the bout was ruled a no contest in the 2nd round after an accidental head-clash opened a cut on Park.
Split into simpler sentences: Holmes turned professional in 1979 and in 1986 challenged IBF Super Middleweight Title holder Chong-Pal Park of South Korea. The bout was ruled a no contest in the 2nd round after an accidental head-clash opened a cut on Park.