Out of respect for Bart Cummings, the ultimate accolade shouldn't be handed just yet to Chris Waller.

But after he trains a Melbourne Cup winner or two - and no-one can imagine he won't - Waller will be entitled to be known as the best there is.

There has rarely been a trainer as dominant as Waller is in Sydney.

At Randwick on Saturday he was at it again, taking all before him on one of the city's biggest race days in much the same way as he has dominated the the past couple of seasons.

A couple of Group Two wins and a Group One took his tally to 36 city wins for the term.

It seems almost a foregone conclusion that he will be Sydney's top trainer again and the most prolific in Australia after a Bradman-like domination of a season in which he trained 167-1/2 winners in town, twice as many as Gai Waterhouse who finished second.

Waller led in 187-1/2 winners on city tracks around Australia last season, 68 more than Peter Snowden who has the backing of Sheikh Mohammed's Darley empire, the world's largest racing operation.

At Randwick on Saturday, Waller won the Group One Epsom Handicap with Boban, the Group Two Roman Consul Stakes with Zoustar and the Premiere Stakes, also a Group Two, with Arinosa.

Each had a different quality.

Zoustar was consummate, Boban won with sheer determination and Arinosa produced an unstoppable finishing burst.

All three will continue their spring carnivals in Waller's new Melbourne stable.

Arinosa is likely to run next in the Group One Manikato Stakes after her Premiere Stakes win in which she started the $3.40 favourite and beat her stablemate Dystopia.

"She has a Group One win in her and she's won in Melbourne, so the Manikato looks a good race for her," Waller said.