The Gary Portelli-trained Spaceboy has found his groove since linking with jockey Kathy O'Hara but the speedster will face his toughest test at Rosehill.
Trainer Joe Pride believes short-course specialist Royal Witness has returned in career-best order and is on target for his stakes test at Moonee Valley.
Jockeys Tommy Berry and Nash Rawiller have both fallen foul of stewards at Rosehill, the pair incurring careless riding penalties over separate incidents.