Supple returned to Britain in May from Dubai where he was champion jockey for the past two seasons and rode a record 75 winners there last winter.
He set the ball rolling yesterday when Misinterpretation led all the way in the claiming race and half an hour later he brought the 5-2 favourite Northern Motto home two and a half lengths clear of Ludere in a handicap to give the Scottish trainer Jim Goldie his 11th success of the campaign.
Supple won the next race, the five-furlong maiden race, on Poetry In Motion - carrying the colours of the snooker player Peter Ebdon - for the jockey's retaining trainer, Eric Alston.
"She deserved that as she has been a little unlucky," Alston said. "She knocked a tooth out coming out of the stalls."
It was Supple again 30 minutes later as he drove the 20-1 chance Roma home in the fillies' handicap. She was a first winner on the Flat for Tony Dicken, who trains just down the coast at Dunbar.
Supple, from County Kerry, said: "I've ridden trebles in Ireland and Dubai and been beaten in a photo-finish, but everything went right today."
The winners took Supple's score to 17 - four short of his total in this country last year and he is fast making a name for himself.Reuse content