His place in the field wasn't confirmed until Wednesday, but Peter Rocket fulfilled his Group 1 destiny after leading in an interstate trifecta in the rich Dapto Megastar (520m) on Friday night.
Having endured a torrid run in winning the Megastar Prelude a week earlier, trainer Keith Hellmuth worked around the clock to have the Victorian ace ready for a return bout a week later.
Peter Rocket didn't disappoint either, charging to the lead in the back straight and defying brave Queensland veteran Glen Gallon to score by one-and-a-quarter lengths. The other Victorian in the field, Proven Nitro ($5.90), thundered home to be a close-up third.
Handler Lisa Hellmuth admitted Peter Rocket's spot in the final was still in limbo up until 48 hours before the first major ever held at the world famous track.
"He was really sore [after the Prelude]," she said after scooping the $75,000 first prize purse. "We've had him to the vet three times and it was up to the vet whether he could run.
"We had him at the vet Friday morning because he pulled up really sore. Sunday he was a lot better and he had his final check on Wednesday and he was all good to go. I just can't believe he came out and won. The quality of dogs [is unbelievable] and anyone could have won it.
"He's got the biggest heart and he just bores through the field.
"God help anything that gets in his way because he just knocks them over. He's the best dog you could ever own."
The result was a huge boost for the Dapto Greyhound Racing Club, who launched a nationwide search to lure the best greyhounds in the country to the South Coast.
While Peter Rocket wasn't initially one of the five invitees for the race, his effort to win the Prelude confirmed the concept gives the qualifiers every chance to win the series.
Glen Gallon ($10.20) loomed as the winner on the home turn after shadowing Peter Rocket ($5.50), but couldn't run down the winner, who stopped the clock at a slick 29.81s.
"I said to Keith I hope we're 10 lengths in front because there's so many strong dogs in the field because I thought we might have got run down," Lisa Hellmuth said. "He just hung on which was unbelievable."
Glen Gallon's trainer Tony Brett was rapt with his kennel star's effort, claiming it was enough to book his spot in the invitation-only Topgun (525m) next month.
"I thought if he gets through on the rail he was a big chance, but the run didn't come," Brett lamented. "I'm stoked to run second ... he ran a ripper race.
"The Gold Coast Cup in about two weeks time [will be his next start]. That's the plan and I think that's just about got him into the Topgun.
"That will be his swansong and that will be it."
National Derby hero Jagger Swagger ($10.30) was the first NSW-trained runner home in the race finishing fourth. Favourite Zulu Zeus ($2.20) bungled the start and never threatened.
Meanwhile, Cawbourne Whip profited from the scratching of kennelmate Cawbourne Rev to sail to victory in the Group 3 Dapto Maiden (520m) on Thursday night.
Trainer Jodie Lord was forced to scratch Cawbourne Rev after the favourite injured an offside toe on the way to the track.
It didn't affect the kennel's chances though as Cawbourne Whip ($7.80) stalked Melaneus Shiraz ($9.50) into the back straight before powering to a six-length win from a slow-beginning Ritza Danny ($1.80f). Melaneus Shiraz finished a weakening third.