Gai Waterhouse trained Overreach has dominated Australia's richest 2yo race, taking out the $3.5 million Golden Slipper at Rosehill on Saturday. The exciting filly, who started $2.80 favourite, sat just behind the speed on the fence, and dashed clear in the straight to comfortably beat Sidestep and Sweet Idea.

It was Gai's 5th Golden Slipper, with the winning horse living up to its favouritism and "showed her superiority".

The Sydney trainer had nothing but praise for young jockey Tommy Berry, who had to prove himself worthy of the mount.

"I didn't commit to him for this filly for quite some time", Gai said, and he (Berry) never said boo."

"I'm so admiring of Tom Berry, not only is he a capable jockey but he has a lovely ability to grab the flow with things".

An emotional Berry was given a big hug post-race by brother Nathan, and then broke down during his interview when discussing the importance of Nathan and his family on his developing career.

He also spoke of the impact Gai has had on helping him along as a jockey. "She puts a lot of trust in me and so do the owners. I'm so lucky to be in this position".

"I never thought this would happen to me. Especially so early", Berry said.