“I've been coming to the Shergar Cup for 12 years now and it is a very special day,” Turner said.
“The progression of female jockeys is something that is really being pushed and discussed, and this is a fine example of how well girls can do in racing.
“Winning the Silver Saddle, named after the late Alistair Haggis – he was the one who got me on the team 12 years ago and really pushed me, so I think he is up there looking down on me.”
After one win earlier, Turner's second place on Roundhay Park in the final race of the series on Saturday (Sunday AEST) assured she was the leading individual rider.
Moreira rode the last two winners while Brown's best place was third on the Andrew Balding-trained Zwayyan.