Maryland homebred Joe, a multiple stakes winner on dirt, made the successful transition to the turf with a hard-fought neck victory in the $100,000 James W. Murphy Stakes, Joy’s Rocket scored a dominant 4 ¼-length triumph in the $100,000 Skipat Stakes, and Carotari won the $100,000 Jim McKay Turf Sprint Saturday on the Preakness Stakes undercard at Pimlico Race Course.