stevie wonderboy is owned by the merv griffin ranch company. he was bred in kentucky by john gunther, tony holmes and walter zent. he was trained by doug o'neill, in all of his lifetime starts and was ridden by garrett gomez. stevie wonderboy is the son of stephen got even out of the mare heat lightning, a daughter of the storm bird colt, summer squall. his grandsire is u.s. racing hall of fame inductee, a.p. indy.