The sophomore daughter of Flashy Bull, owned in partnership with Tom Keithley, came back from her gallop the morning of May 1 with a bruised right heel.
"Simply bad timing," West Point's communications department said via Twitter.
Flashy Gray, who was second by 1 3/4 lengths to undefeated Unlimited Budget in the Fair Grounds Oaks (gr. II) March 30. That followed a runner-up finish 2 3/4 lengths behind Rose to Gold in the Honeybee Stakes (gr. III) at Oaklawn Park March 9
Flashy Gray will be pointed for the $300,000 Acorn Stakes (gr. I) for 3-year-old fillies going a mile at Belmont Park May 27.
Bred in Kentucky by Brereton Jones, Flashy Gray is out of the Cat's Career mare Pleasure Cat and was a $775,000 purchase at the 2012 Keeneland November breeding stock sale. She has two wins and three seconds from five starts, with earnings of $196,100.