Complex sentence: He challenged Larry Holmes for the WBC heavyweight title in November 1982, losing a one-sided unanimous decision, and took wins over notable heavyweights of his era such as Bernardo Mercado, Earnie Shavers, and Leon Spinks.
Split into simpler sentences: He challenged Larry Holmes for the WBC heavyweight title in November 1982, losing a one-sided unanimous decision. Cobb took wins over notable heavyweights of his era such as Bernardo Mercado, Earnie Shavers, and Leon Spinks.