War of Will wins Preakness featuring riderless running horse

War of Will, ridden by Tyler Gaffalione, crosses the finish line first to win the Preakness Stakes horse race at Pimlico Race Course, Saturday, May 18, 2019, in Baltimore. (AP Photo/Mike Stewart)

BALTIMORE — Mark Casse completed a lifelong quest two weeks after the scare of a lifetime. And he did so in a race featuring a riderless horse that threw his jockey out of the gate and kept running.