As he closes in on long-established training records, trainer Chris Waller admits he will be relieved when the milestones are achieved.

A treble at Rosehill pushed Waller to 152-1/2 winners in Sydney for the season, just 3-1/2 short of the 156 set by TJ Smith in 1975-76 and Gai Waterhouse 2002-03.

Two winners at Newcastle will also help him chase down Peter Snowden for the national premiership.

Waller is a runaway leader as he powers to his third Sydney trainers' premiership, a pattern set early on.

"To be mentioned in the same sentence as TJ Smith and Gai Waterhouse is something I can't explain," Waller said.

"I'll look back on it in ten years time and then ask `was he worthy'.

"History will tell."

Waller said he tried not to set goals, he would rather make sure he had the right systems in place and the winners would come.

"I'm getting better as a trainer," he said. "The systems are better and the horses are better.

"It's been a slow process and hard work and it's exciting to be a part of this.

"It's good to talk to people like Gai Waterhouse and Peter Snowden and learn from them.

"You also need to make time for yourself and sit back occasionally."

Waller doesn't do a lot of that with a large Sydney stable complemented by a 20-horse operation in Melbourne.

The stable dominates Sydney races by numbers and having a Melbourne stable allows Waller to separate stablemates and give owners the best possible return.

"I try to place the horses where they can win," he said.

"That's my job. I can't change much but just keep trying to win money for the owners."

"Third and fourth prize money pays the bills," he said.

"Second prize money is outstanding and first pays the for the training for a year.

"I could leave them at home but then I'm not doing my job for the owners."

Clever Boy and Son Of Ross won at Newcastle while Relaxed And Happy, Titbit and Said Com were Waller's Rosehill winners.

Titbit and Said Com, who both won over 1400 metres, are examples of Waller's perseverance and willingness to try something new.

"I was a bit concerned when the track dried out with Titbit," he said.

"And we've changed things around with Said Com and brought him back in distance. Next time I'd like to train him purely as a 1200-metre sprinter."

Runner-up to Mosheen in last year's Randwick Guineas, Said Com has been frustrating for punters while Titbit hadn't won a race since December 2011.

Adding to Waller's achievements, he is the leading Group One trainer this season with the chance to take his total to nine in next week's Tatt's Tiara, the final Group One of the season where She's Clean and Red Tracer will run.