A WIDE barrier is not a concern for Gai Waterhouse as she aims to win her first Australian Derby with Laser Hawk at Randwick on Saturday. Laser Hawk drew barrier 11 in the field of 13, with Kiwi Silent Achiever, the only filly in the $1.5 million race, set to start from barrier nine.

"We are not worried about the barrier. He is a big horse that likes to roll along. It doesn't make a difference to him," Waterhouse said.

No trainer is in hotter form than Waterhouse. She has snared three Group 1 wins in the past two weeks - the Golden Slipper, Rosehill Guineas and Queen Of The Turf Stakes. Laser Hawk finalised his preparation with a solid hitout at Randwick.

"I can't fault him," Waterhouse said. "The 2400m is ideal and exactly what he needs. He's been set for the Derby all along and the Rosehill Guineas was a very nice bonus to pick up along the way. He's a rising star."

Randwick clocker Craig Tompson agreed, saying Laser Hawk appeared to be peaking for the Derby. "He is not the world's flashest worker but I think Gai has got him right where she wants him," he said. "I don't think they had him screwed down going into the Rosehill Guineas; he looked as though there was still more to come. If he can run the trip, then it is hard to imagine he isn't going to be right in the finish."

Silent Achiever firmed to $4 after the barrier draw. Laser Hawk remained at $3.20. The other Kiwi challenger, Ocean Park, firmed from $5.50 to $4.80.