The two-year-old's victory in the $250,000-to-the-winner final couldn't have come in more incredible circumstances either.

Zipping Bailey was sluggish out of box six and trailed the entire field at the first turn but surged along the rails, unimpeded, before launching home off the bend to chase down $2.80 favourite Federal Lilly for the most shocking of wins.

The favourite looked to have the race won before Hallinan's bitch, trained by Richmond Vale's Jason Mackay, unleashed one of her trademark, roaring finishes to reel her in in a time of 29.92 seconds, with Black Forge ($12) hanging on for third.

The breathtaking, last-to-first victory also ended Mackay's Golden Easter Egg drought, he's been one of NSW's best trainers for the last two decades but had never tasted success in this series.

It also denied Peter Lagogiane a unique slice of history, he was chasing NSW's most prestigious prize with Federal Lilly just six months after winning the Million Dollar Chase with Mystic Riot.

Mackay and Hallinan have had a long partnership and that's why the former said this win was extra special, it was Zipping Bailey's 15^th career victory and takes her earnings just shy of the $300,000 barrier.

"I've been with [the Hallinans] for 20 years and Marty has been into dogs all his life and all he's wanted to do was win one," Mackay said of the Golden Easter Egg.

"We've tried but had no luck, so it must have been our turn, but they were over the moon. I just hope one day [we] get another crack at [the Golden Easter Egg]. The thrill gobsmacks you.

"By the time we got home and did all the other dogs, we were in bed at 2.30am and I couldn't sleep.

"I was trying to sleep, and I would nod off and then wake thinking, 'Are you serious? Did that just happen?' She ran home in 11.4 and you'll never hear of that again."

Although it makes for tense times, Mackay said he's quite happy to let Zipping Bailey continue with her unique racing style, and set her up for flying finishes. But, he's not sure what's next for the star.

"She's only a little thing and nothing flash to look at, but she's got a really big motor," he said.

"She got buried a few times when she was racing up on the pace and she's worked it out that if I keep doing that, I'm going to get hurt, so now she lets them clear the air, then she goes for that saloon run near the catching pen.

"I do a lot of box work and she's the best beginner you can get, but when there's other dogs around her, she doesn't want to get hurt so she's worked out how not to.

"She'll do nothing for a week. We'll do a full blood count and see where she's at. I wouldn't know if there's something on in Melbourne, or Brisbane.

"I'll just give her a quiet week and work it out from there.

Zipping Bailey's win also ended Victorian-trained pups' nine-year stranglehold on the Golden Easter Egg.