Trainer Doug ONeill says his 3-year old colt had a reoccurrence of a shin problem that hindered his training over the last three months.
ONeill said Square Eddie developed a hot spot in the shin at Churchill Downs over the weekend.
ONeill said the injury kept Square Eddie off the Derby trail earlier this year. He finished third in his last start on April 18 in the Lexington Stakes.
ONeill plans to give the horse a few weeks off before deciding where to race next.
The injury is not believed to be career threatening.