sentences:  The Derby was run on an unusually hot day in front of an estimated crowd of 250,000 including the King and Queen.Tetratema, the 3/1 favourite, went into an early lead and set an extremely fast pace as he was challenged by Abbot’s Trace (ridden by Steve Donoghue).The favourite was struggling soon after half way and dropped from contention before the straight, eventually finishing unplaced behind the outsider Spion Kop.