A runaway leader in the Sydney trainers' premiership, Chris Waller has become the first trainer in Australia to rack up 100 winners for the season as he makes a run for the Melbourne title.

Index Linked brought up the century to give Waller a double at Flemington on Saturday with the trainer also sending out two winners on his home track, Rosehill, and one at Kembla Grange.

Waller, who has just 10 boxes at his Flemington satellite stable, says with a few more he could give the Melbourne premiership a shake.

He has trained 14 metropolitan winners in the southern capital with Darren Weir leading on 17 from a crowded group containing Peter Moody, David Hayes and Mick Price.

"We've got an application in for more boxes and we would send more horses down if had the room," Waller said.

"We need more boxes to be competitive."

Waller is well on the way to his fourth Sydney title and is proud of his performance on the national scene.

His winners in Sydney included Calming Influence who will go for a short break after totting up her third win from five starts this preparation.

"She will come back and follow a similar path to what Red Tracer did as a three-year-old," Waller said.

"The PJ Bell and the James Carr Stakes will be the races we aim her at."

Waller's other Rosehill winner was Pentometer who came from last in the four-horse field in the Australian Turf Club Handicap (2000m).

Sent out the $2.10 favourite, Pentometer worked away down the straight to overhaul Runhardasun ($4.40) and win by 1-1/4 lengths.

Although there have been some critics of the small fields for staying races in Sydney, Waller is not among them.

"It's a question of getting used to the staying program," he said.

Waller is more than 30 winners ahead of Peter Snowden in Sydney but the outgoing Darley trainer showed he was still a force with a Rosehill treble.

Youngster Kumaon added his name to the impressive list of two-year-olds in the stable while Limes and Emblems completed Snowden's trio.

Limes backed up from his second to Ninth Legion in last week's Villiers Stakes (1550m) to win over 1400m.

"This is the first time I've backed him up and it seems to have helped," Snowden said.

"He is the sort of horse that looms up and then doesn't win.

"This will help his confidence and there's a Listed race in Melbourne for him in about three weeks."

Emblems claimed his second consecutive win when he beat Red Excitement over 1200m with all three Darley winners ridden by Kerrin McEvoy.