One of last season's leading three-year-old's, Demonetization, will undergo a gelding operation this week after disappointing his connections with his runner-up performance behind Gundown over 1600m at Pukekohe on Saturday.
"He's got an appointment with the doctor," trainer Nigel Tiley said.
"We are going to geld him on Wednesday morning. He should have won that in a canter. He went past Seventeen Seventy and he just pulled himself up. It might have looked a great run but it was far from what he is capable of doing."
Demonetization won the Group 2 Auckland Guineas (1600m) in January and was subsequently installed a warm favourite for the Group 1 New Zealand Derby (2400m) but failed to make the race due to a stress fracture of the fetlock.
Tiley believes in hindsight Demonetization should have been gelded during his recovery from that injury but is hoping the operation will get the son of All Too Hard's mind back on the job.