Complex sentence: Storm Cat, as the colt would later come to be known, was not only Terlingua first stakes winner with his victory in the Grade 1 Young America Stakes, but he would grow to become one of the most influential stallions of recent times.
Split into simpler sentences: Storm Cat, as the colt would later come to be known, was Terlingua first stakes winner with his victory in the Grade 1 Young America Stakes. This precocious two year would later grow to become one of the most influential stallions of recent times.