Complex sentence: Parx provided significant financial incentives to any horse entering who previously won a triple crown race or other selected Grade I races, so California Chrome's connections earned $200,000 simply for having him start.
Split into simpler sentences: Parx provided significant financial incentives to any horse entering who previously won a triple crown race or other selected Grade I races. Due to his Derby and Preakness wins, California Chrome's connections earned $200,000 simply for having him start.