Morning-line favorite I Want Revenge is out of the Kentucky Derby.

The owners of the 3-year-old colt have scratched the Wood Memorial winner hours before the Run for the Roses as a precaution after trainer Jeff Mullins discovered a hot spot on the horse's left front ankle.

An X-ray did not find any damage, but with a wet track expected for the Derby, Mullins and owner David Lanzman didn't want to take any chances.

I Want Revenge and 19-year-old Joe Talamo were to start from post No. 13 in the Derby. The duo established themselves as one of the Derby favorites after a last-to-first dash in the Wood Memorial last month.

Mullins says he doesn't expect the injury to be career-threatening.