Brian’s Derby Preps 2016: The Withers

 Aqueduct: The GIII, $250,000 Withers at 1 1/16 miles (Kentucky Derby qualifying points: 10-4-2-1) #1 Donegal Moon (15-1): It’s rare you get a longshot from Pletcher in a 3yo graded stakes, but this son of Malibu Moon certainly fits the bill, as he was well-beaten by today’s favorite Flexibility in the GII Remsen to end…