Valuable colt Rubick will be closely monitored over the next two weeks before a decision is made whether he presses on to the Golden Slipper.

Rubick finished fourth in Saturday's Blue Diamond Stakes at Caulfield won by Earthquake after being flushed out and hitting the front sooner than anticipated.

Trainer Gerald Ryan said the owners would let him decide whether to continue Rubick's two-year-old campaign to the Slipper on April 5 or put him away with a view to the early spring three-year-old features.

Ryan said his concern was that Rubick was in his first racing preparation and it could be too taxing, adding that reports he was unhappy with Brenton Avdulla's ride were off the mark.

"Rubick was left a sitting shot again. We would have liked to have taken a sit but the circumstances didn't allow it," Ryan said.

"Brenton rode him the way the circumstances panned out.

"Rubick has pulled up all right and we'll keep an eye on him over the next couple of weeks and if I'm not happy then we won't go on.

"This is his first racing prep and I don't want to over-tax him now. A lot of the other horses in the race had had a start before Christmas."

Although Rubick could not quite get the job done, stablemate Klammer gave the trainer something to smile about with a valuable win on Sunday at Canberra.

After running third on debut behind one of Gai Waterhouse's Golden Slipper hopefuls Law, Klammer recorded a 1000m victory which earned him a $50,000 Inglis sales bonus and a return to Canberra for the Black Opal Stakes on March 9.

"It was pleasing to see him win and the Black Opal looks like a nice race for him," Ryan said.

Klammer also became the trainer's 24th individual winner by Snitzel who he trained to win the 2006 Oakleigh Plate.

Among the 24 is Snitzerland, winner of the Group One Lightning Stakes at Flemington last Saturday week.

Ryan said Snitzerland would go to the Group Two Challenge Stakes at Randwick on March 15 before another tilt at the Galaxy in which she finished second a year ago.