Natalie Young became the first woman to train an Australian Derby winner when Tavago raced away with the group 1 at Randwick on Saturday.
The $31 chance won by 3Â¼ lengths from Jameka ($8) and Tally ($8) with $1.65 favourite Tarzino in fourth after pulling for most of the race. 
Trent Busuttin, who trains in parnership with Young in New Zealand, said Tavago's win topped his Victoria Derby triumph with Sangster in 2011.
"She is twice the horsewoman that I am a trainer," Busuttin said. "We have been together forever and have a couple of beautiful kids.
"It is very much a partnership and we share everything, to have her name next to mine in the book makes this even more special."
Tavago had been missing the kick and leaving himself too much to do but he was in stalking position coming to the turn and exploded away from his rivals when Tommy Berry asked him to go.
"That is amazing to see him come out and do that," Young said. "He was better today than before the New Zealand Derby .
"He was nice and relaxed out there and Tommy gave him a great ride and got him to jump and that was the key. He jumped, box-seated, relaxed nicely and just kicked, it was a phenomenal ride from Tommy."
Berry had put his faith in Busuttin when he got a text from him to ride Tavago.
"He is a very good judge of a horse and he texted me to ask me ride him," Berry said. "He texted me again and said they a good look at the New Zealand Derby sectionals and you will be happy. He probably should have won it."
Tarzino had run his race by the turn after jumping the crossing at the mile.
"He was relentless [pulling] until to the 600m until I came off [Jameka's] back," jockey Craig Newitt said.