On The Rocks is back in group one contention after downing his fellow classic hopefuls at Ellerslie.
The Alamosa colt dropped down the pecking order after he was unplaced in the Karaka Million 3YO Classic (1600m), but he's back in business after knocking off a strong three-year-old line-up in yesterday's group two Electrolux Avondale Guineas (2100m).
On The Rocks' performance under stable jockey Jake Bayliss has seen his group one Vodafone New Zealand Derby (2400m) odds come in from $16 to $6.50.
"To be honest, I was a bit dubious today about the wet track, but he's just so brave," said Pam Gerard, who trains with Michael Moroney.
"His work during the week was absolutely outstanding and it was a beautiful ride from Jake. Very patient and it was all about getting the horse to settle and finish off and he's done that.