Cork's Billy Twomey was Ireland's sole international winner on the first day of the Discover Ireland Dublin Horse Show, but other Irish riders made a respectable showing with top ten places.

Twomey won the Speed Stakes with the grey Irish-bred mare Cavinem, beating compatriot Conor Swail on Coulthard 2 by just over two seconds, while Alex Duffy took fourth place on Courttown. Cian O'Connor and his new mount Shooting Star placed sixth, while Capt David O'Brien and Mo Chroi claimed tenth.

The USA's Laura Kraut took the Sports Council Classic trophy with Blue Angel, while Ireland’s Nicola Fitzgibbon placed fifth with Puissance. Conor Swail was once again in the money with a tenth-place on the eight-year-old stallion Lansdowne.

America also took the first class of the morning, the Failte Stakes, with Kraut once again showing a good turn of speed, this time on the Darco mare Dona Evita, but Capt David O'Brien kept the Irish flag flying with a third place on the Irish-bred Heartbreaker gelding Drumiller Lough, while Trevor Breen took ninth on Andino Z.

The Speed Derby, The Power and Speed class, and the Six-Bar competition are the highlights at the RDS on Thursday.