HALLANDALE BEACH, Fla. – There were three handicap races run here Saturday, but the star of the day and the latest talk of the town came out of an innocuous-looking 2-year-old maiden event midway through the afternoon’s 10-race program. A modestly bred juvenile named Simplification dominated eight rivals by 16 3/4 lengths, drawing off with every stride through the stretch despite never switching off his left lead.