22-1 longshot Hillexotic (Muscle Hill) played giant killer in the $250,000 Dayton Trotting Derby and set a new track record in Grand Circuit harness racing action at Dayton Raceway on Saturday night (Sept. 30th.) Given a perfect steer by driver Yannick Gingras, the six-year-old gelding sat inside until the stretch, watching his stablemate It’s Academic