Southern Front and Secret Location were online auction buys from Victoria.
Potiris has plans to tackle the Atherton Cup late in September with hopes of gaining entry into the Country Cups Challenge Final.
"He's already won two races in the Rob Koch memorial series and it would be the cherry on the cake if he could win at Atherton and qualify for the Final in Brisbane," Potiris said.
"My partner and fellow trainer Dean Piccolo gives me a lot of helpful advice as well as my mum and sister, they are also involved in the business and ownership of most of my horses. It's a real family show."
Both of Potiris' winners on Saturday were ridden by apprentice Tyler Leslight who is taking great strides since moving to the region a few months ago and is making his mark on the local scene.
Potiris heaped praise on Leslight for "perfect" rides on the pair.
Leslight rode half of the program with a treble.
He shared the riding honours with senior jockey Nathan Day who rode the other three winners.
One of Day's winners was for Louise Terzi who was a stable hand and assistant trainer for champion Atherton Tablelands trainer Roy Chillemi.