Sentry Heads Plate Possibles Nicky Henderson´s Sentry Duty heads the confirmations for the John Smith´s Northumberland Plate at Newcastle on Saturday.Formerly trained in France, the five-year-old has had two starts for the master of Seven Barrows, finishing fourth over hurdles before winning at Newmarket in great style by two and a half lengths.A total of 51 horses have stood their ground at the five-day stage with Charlie Egerton´s Vinando and Gerard Butler´s All The Good next in the list.The weights are due to rise as Jamie Osborne has taken out Ascot Gold Cup runner-up Geordieland, although two Royal winners may go for another big prize.Osborne´s Enjoy The Moment won the Queen Alexandra Stakes and could run again at Gosforth Park, while Paul Webber´s Full House, winner of the Ascot Stakes, is another possible.The Irish challenge is headed by high-class hurdler Al Eile while Tony Martin´s Leg Spinner, fourth behind Full House last week, could renew rivalry with Webber´s charge.John Gosden´s Right To Play, a winner of two of his last three starts will have his supporters, as will Peter Chapple-Hyam´s River Alhaarth and Chester Cup winner Greenwich Meantime.Last season´s Ebor winner Mudawin, Michael Bell´s Juniper Girl, and Amanda Perrett´s Nosferatu are others with leading claims.(C) PA Sport