An exciting calibre of gallopers have nominated, shaping an entertaining day of action with three standout races on the card.

Despite never winning around the tight Cloncurry circuit, trainer Jay Morris will saddle up Zeus in race two, the Ernst Henry Mining Class 3 Plate (1000m).

In what punters should find a tricky race to decipher, Zeus returns from Townsville with encouraging form.

The in-form Happy Rhythm for handy Julia Creek trainer Tanya Parry, has got under the guards of most pundits in recent wins, but is capable of making it two from two at Cloncurry.

The feature race of the day comes up in race three, with the Ernst Henry Mining Open Handicap (1000m).

Topweight appears unsuited dropping back sharply in distance, while the main fancies who should fight out the finish loom as Aussie Rock and Supertax.

Aussie Rock returns after being given a three-month spell by trainer Garth Tully, and looks to make it three wins in succession.

Denise Ballard-trained Supertax should jump as favourite, but according to some punters might not be as well suited over the shorter journey.

A quick look back through his form reveals he defeated pin-up horse Heart, in a 1000m race in Mount Isa on May 29.