A persuasive piece of track-work by Zac De Boss convinced trainer Simon Zahra that it was worthwhile for the three-year-old gelding to take on the older horses at Caulfield.

That judgement proved to be spot on as Zac De Boss took his record to two wins from two starts when he took out the Benchmark 64 over 1400 metres.

The co-trainer Zahra said that although Zac De Boss won he still had a lot to learn and did a bit wrong.

Zahra said although the son of Zacinto was undefeated they won't be in a hurry to push him up in class.

"He's a big horse with a few immaturity problems but we'll find another three-year-old race around this distance and try and cash in and get some prizemoney," he said.

His jockey Damien Thornton said that Zac De Boss was a horse on the up.

"Last prep he didn't show much at all but this time he has come back a different horse," Thornton said.

"I thought I was on the best horse in the race but he was probably the most immature out of all of them. He just had to overcome that and he coped with the occasion pretty well, I think," he said.

Zac De Boss $6 defeated Jiminez ($15) by a 1 1/2 lengths with Galgani ($6.50) a 1/2 length away.

Journeyman jockey Dean Holland said the move by Tony and Calvin McEvoy to open stables at Ballarat would open the door for more opportunities for him.

The McEvoy's rewarded Holland with the opportunity on Classic Weiwei and he didn't let them down winning the Jodie Burgess Handicap (2380 metres) on the $31 outsider.

It was Holland's first city winner for the season at only his 14th ride in the metropolitan area.

"I have to thank Tony and Calvin and the team for giving me an opportunity," Holland said.

"I've done a little bit of work for them lately and they've rewarded me with a couple of rides so it was great to get a win for them," Holland said.