No-one is happier than James Cummings that Skylight Glow failed to reach her reserve at auction.

The trainer was so sure of her ability he told the filly's owners they needed to set her reserve high at a recent Sydney sale.

Gooree Stud took his advice and when the two-year-old was passed in at $200,000, Cummings took her back to his Randwick stable to prepare for Wednesday's 1250m maiden at Canterbury.

Skylight Glow duly won, toughing it out to beat Invincibella by a short head.

"She was in the Gooree reduction sale and I told them she was very smart and someone would need to fork out a bit for her," Cummings said.

"She might not have the best pedigree page but I had an opinion of her and was glad she was passed in shy of her reserve."

The sale was sandwiched between the filly's midfield finish on debut over 1200m and Wednesday's win.

"She will get better as she gets over further," Cummings said.

"I think 1400 metres to a mile will suit."

Skylight Glow is entered for the Group One JJ Atkins (1600m) at Eagle Farm on June 11 but Cummings said that was unlikely.

"There is a 1400-metre race at Randwick in a few weeks which is probably where she will head," he said.

Acatour will also stay in Sydney following his win on debut in the colts and geldings division of the two-year-old maiden.

Co-trainer Peter Snowden said the colt was a 1600m prospect but he would wait for the spring.

"I don't think we'll take him up to Brisbane," Snowden said.

"I might give him one or two more runs here. He is a 1600-metre horse and there are races for him later on."

Acatour was the second leg of a winning double for Snowden and his son and training partner Paul with Yuma Desert taking out the three-year-old maiden (1100m) at her sixth start.

Heavyweight apprentice Koby Jennings also celebrated a double at the meeting using his 3kg claim on topweights Viaductress and Bullrush.