Roger James has learned not to judge Silent Achiever on her trackwork as he prepares the filly to take on the boys again in Saturday's Group One Australian Derby.Silent Achiever came up with barrier nine in a field of 13 for Saturday's $1.5 million Classic at Randwick, just a couple of hours after jockey Hugh Bowman put the filly through her paces in her final serious hitout before the race."She's never been a great worker and that's what happened again this morning," James said on Tuesday."Fort

Roger James has learned not to judge Silent Achiever on her trackwork as he prepares the filly to take on the boys again in Saturday's Group One Australian Derby.

Silent Achiever came up with barrier nine in a field of 13 for Saturday's $1.5 million Classic at Randwick, just a couple of hours after jockey Hugh Bowman put the filly through her paces in her final serious hitout before the race.

"She's never been a great worker and that's what happened again this morning," James said on Tuesday.

"Fortunately I said to Hughie beforehand, 'Don't be disappointed if she doesn't work flash because she never has yet'.

"To be honest I was disappointed with her work before the New Zealand Derby but my track work rider who is very good just said, 'Don't be concerned, she's all right'."

Silent Achiever won the NZ Derby easily before embarking on her Australian campaign.

Silent Achiever is $4 second favourite with TAB Sportsbet for the Australian Derby behind Rosehill Guineas winner Laser Hawk who remained at $3.20 after drawing barrier 11.

Despite not being the flashest worker, James said he was actually pleased with what he saw from Silent Achiever on Tuesday in a workout with Derby rival Sangster.

"I thought her work was actually pretty good for her. As quick as she's ever gone on the track I would think," James said.

After a round-table discussion with connections it was decided Silent Achiever would tackle the Derby rather than the Oaks a week later.

Silent Achiever was third to Laser Hawk and Ocean Park in the Rosehill Guineas after dropping back from 2400m to 2000m.

Both James and Bowman believe the step back up to 2400m will suit.

"She showed a great turn of foot and really sustained a gallop in the (New Zealand) Derby and I think that's what might have been against her the other day," Bowman said.

"Coming back in trip she just lacked that turn of foot."

A Derby victory for favourite Laser Hawk would be trainer Gai Waterhouse's first success in the race.

Laser Hawk is raced by Eduardo Cojuangco's Gooree Stud and Gooree's racing manager Andrew Baddock has no concerns with the wide draw.

"He's such a big horse and needs a lot of galloping room," Baddock said.

"He'll roll forward so I don't think it's a major issue. He'll be right up on the pace somewhere and Nash (Rawiller) will just put him to sleep somewhere and he'll be trained to perfection."

Waterhouse and Rawiller have already combined for three Group One successes in the opening three weeks of the Sydney Carnival including the Golden Slipper with Pierro.

Ocean Park, a late entry for the Derby, is on the third line of betting at $4.80 and has barrier six.