Complex sentence: Elky Clark retired immediately after his bout with Fidel LaBarba due of a severe eye injury that he sustained in the fight, he was a riveter by trade, and also played a dulcimer and accordion for a living.
Split into simpler sentences: Elky Clark retired immediately after his bout with Fidel LaBarba due of a severe eye injury that he sustained in the fight. He was a riveter by trade, and also played a dulcimer and accordion for a living.