Rhinestone Hurdling Debut Top bumper horse Rhinestone Cowboy makes his debut over hurdles at Newbury on Friday.Jonjo O`Neill`s six-year-old, who has won two of his three starts in National Hunt Flat races and finished second in the Festival Bumper on his other, runs in the second division of the Systems By Design - Interiors `National Hunt` Maiden Hurdle.JP Magnier, son of owner Sue and Coolmore boss John, partnered the gelding when he won at Cheltenham on his reappearance but Norman Williamson who rode Rhinestone Cowboy in his first two outings takes over again in the saddle.
