Rely on Murphy It should pay to side with Ferdy Murphy and Streamstown in today`s feature event, the £80,000 Marstons Midlands Grand National Chase at Uttoxeter.And the booking of champion jockey Tony McCoy does nothing to deter confidence in the eight-year-old. He already has one big staying prize to his name this season, and that came at this course in February when he relished the heavy ground in the Singer & Friedlander National Trial over three and a half miles. Murphy`s gelding got better the further he went in what looked a race with plenty of solid performers in it. In the end he came home a brave one and three-quarter lengths winner from Tony Martin`s raider It`s Himself, with another proven mudlark, Edmond, seven lengths away in third. That is decent form and a repeat may be good enough to beat Irish challengers This Is Serious and The Bunny Boiler.