( CNN ) -- There was more heartbreak for Britain 's Queen Elizabeth II Friday as her horse Bold Sniper was beaten in the Wolferton Stakes on Royal Ascot 's fourth day . Ed Dunlop 's Contributor claimed victory to deny the Queen and extend her losing run at the festival . On Thursday , her filly Estimate narrowly failed in her bid to defend her Gold Cup title when she was overhauled by Leading Light in the final stages . `` I 've had so many seconds here I thought it was never going to happen , but it 's fantastic to win one , '' George Baker , who rode Contributor to victory , told reporters . `` This horse ran on very heavy ground at Sandown behind Noble Mission . If he had n't run there , he 'd have been a lot shorter in the betting . In the day 's feature race , the Coronation Stakes , Rizeena delivered for trainer Clive Brittain , striking the front under Ryan Moore . Hartnell proved victorious in the Queen 's Vase , while Louis The Pious caused a 33-1 shock in the Buckingham Palace Stakes . `` That was great . I 've been here for the last three days and I 'm just glad to ride a winner , '' Silvestre de Sousa , who rode Louis The Pious , told reporters . `` I felt they went pretty quick . He gave me a great ride . He was off the bridle the whole way but he was comfortable at his speed . `` When I asked him to quicken up , he picked up too well , but he kept rolling and thank God he got there . ''
Queen Elizabeth II suffers more disappointment at Ascot . Queen 's horse beaten by Contributer in Wolferton Handicap Stakes . Comment: