Complex sentence: Leonard decided to fight Camacho after commentating on Camacho's fight with the 45-year-old Roberto Durán the previous year, calling the disputed unanimous decision "an early Christmas gift".
Split into simpler sentences: Leonard decided to fight Camacho after commentating on his fight with the 45-year-old Roberto Durán the previous year. Camacho won by a disputed unanimous decision, which Leonard called "an early Christmas gift".