Patinack Farm's challenge for this season's Brisbane trainers' premiership continues with the prospect of a treble at Eagle Farm on Wednesday.Nathan Tinkler's stable operation, under the direction of trainer John Thompson's foreman Toby Edmonds at the Gold Coast, and Eagle Farm's Brian Smith currently share the premiership lead with five wins.Edmonds will saddle up four runners in three races and has a realistic chance of claiming a midweek treble.First starter Mallard won a 900-metre barrier tr

Patinack Farm's challenge for this season's Brisbane trainers' premiership continues with the prospect of a treble at Eagle Farm on Wednesday.

Nathan Tinkler's stable operation, under the direction of trainer John Thompson's foreman Toby Edmonds at the Gold Coast, and Eagle Farm's Brian Smith currently share the premiership lead with five wins.

Edmonds will saddle up four runners in three races and has a realistic chance of claiming a midweek treble.

First starter Mallard won a 900-metre barrier trial at Doomben last month to signal his strong claims in the Queensland Council Of Unions Maiden Handicap (1200m) while the stable has two representatives, Unpaid and Supreme Flight, in the Bert/CIPQ Maiden Plate (1835m).

Patinack Farm's fourth runner will be Interview in the CFMEU/BLF Handicap (1400m).

Edmonds is looking forward to when the Patinack Farm stable eventually moves to Wadham Park in the Gold Coast hinterland once the grass training tracks are ready.

Patinack Farm currently has 30 horses in work at Bundall adjacent to the Gold Coast track but the plan is to more than double the number to around 70 once the move to Wadham Park is completed.

The Gold Coast base will soon strengthen noticeably in quality following Tinkler's decision to shut down his racing operation at Warwick Farm in Sydney's southwest.

Patinack chief executive Peter Beer said the lack of progress on the refurbishment of Warwick Farm was a major factor behind the decision to close the stable.

By November, 80 horses will be split between Patinack's Hawkesbury and Gold Coast properties as well as their training centre at Flemington in Melbourne.

"It's Nathan and John's ambition to win the premiership in Queensland," Edmonds, who was a successful trainer in his own right for many years, said.

"We'll probably cull a few of the horses we have here now and replace them with some better quality horses from Warwick Farm."

Edmonds believes all four Patinack Farm runners at Eagle Farm have strong claims of winning.

"Mallard is a first starter and is still raw and new but he's got some ability and should run a nice race," he said.

"Unpaid has run second at Caloundra at his last two runs and looked the winner both times.

"We've put blinkers on him this time to address the situation while Supreme Flight got smashed when he struck trouble last start."

Edmonds believes Interview's fifth to Seventh Heart in a 1200-metre class three at Doomben last week could point to victory in the final race.

"He was travelling on the winner's back coming to the 600 metres when the winner went for an inside run while Interview had to go around them," he said.