The 6-year-old horse, by A.P. Indy out of the Mr. Prospector mare Classic Event, made four starts as a 3-year-old in Southern California but failed to win. He was bred and owned by Golden Eagle Farm and trained by Bill Spawr. Box Office Event is a half-brother to graded stakes winner Event of the Year, by Seattle Slew.
Box Office Event will stand at Castle Peak Farm in Ontario, Canada, for a fee of $3,000.