Complex sentence: In 1985 he fought Smokin'Joe Frazier's son and top contender Marvis Frazier, in a recurring theme he had Frazier down in the second, but ran out of gas and was outpointed.
Split into simpler sentences: In 1985 he fought Joe Frazier's son and top contender Marvis Frazier. In a recurring theme, he had Frazier down in the second round but ran out of gas and was outpointed.