QUIET Reflection gave Bletchingdon jockey Dougie Costello his first Group One win in the Commonwealth Cup at Royal Ascot.

Strongly fancied after winning the Sandy Lane Stakes impressively at Haydock, the 7-4 favourite delivered on her promise.

Trainer Karl Burke saw Reflection take her record to six wins from seven starts.

However, the closing stages were agonising viewing for her connections.

The leader, Kachy, veered badly to his left while Ryan Moore was starting his charge on Washington DC.

Costello did not panic, though, and kept Quiet Reflection straight and true as she once again displayed her electric turn of foot.

The former jump jockey joins an elite group of riders, who have won at both Royal Ascot and the Cheltenham Festival.

Costello, who rode Countrywide Flame to victory in the Triumph Hurdle at Cheltenham four years ago, said: “I owe Karl Burke a lot and I am so lucky.

“Anybody would have won on her today.

“They went a nice gallop, but Quiet Reflection is such an honest mare.

“She jumps wherever you want to go.

“Her courage and class have taken her through.”