Derby trail

Derby dreams at this time of year can prove as ephemeral as the vapours rising into the glacial air of Hot Springs. But the owner of the champion juvenile knows perfectly well that plans, with Thoroughbreds, can only ever be provisional--and that the postponement of Monday's Oaklawn card is a relatively trivial inconvenience to Essential Quality (Tapit). To recall the graver vexations that can unravel a Derby colt, Sheikh Mohammed needs only rewind to the last cycle, and the last colt that offered to requite perhaps the greatest single ambition...