Rain worry for Volata Volata today emerged as the latest Darley July Cup contender whose participation is threatened by wet weather.Mark Tompkins announced he will not run the three-year-old in Thursday`s Group One contest if the ground is on the soft side at Newmarket.But clerk of the course Michael Prosser revealed that the going on the July course is no worse than good despite an overnight deluge, and he is full of hope that conditions will not deteriorate further.Volata is quoted at 12-1 by Coral for the Stg£200,000 July Cup after winning a Group Three event at Newcastle last weekend.Amanda Perrett is also liable to pull 13-2 chance Tillerman out of the six-furlong showpiece unless there is 'good, fast ground'.