A son of two late Waikato Stud stars, O'Reilly and Glamour Puss, has made an immediate impression in his racetrack debut with a convincing maiden win at Geelong.

Carrying the colours of Waikato Stud, the Danny O'Brien-trained three-year-old Tahi stepped out for his debut in a 1240m maiden on Friday.

He bounced to the front under Patrick Moloney before putting his rivals away in the straight to score by 3-1/4 lengths.

O'Brien trained the sprinting mare Glamour Puss to Group One wins in the 2005 Goodwood in Adelaide and Salinger Stakes in Melbourne.

Glamour Puss also graced the Royal Ascot stage 11 years ago when seventh in the King's Stand Stakes won by Takeover Target, and 10th in the Golden Jubilee Stakes before being retired to the breeding barn.

Glamour Puss died last year and is buried at Waikato Stud in New Zealand alongside the stud's champion sire O'Reilly who died in 2014 at the age of 21.

The mare produced nine foals, four by O'Reilly.

Tahi became the seventh horse out of Glamour Puss to race and win and Moloney was taken by the gelding's performance,.

"I think Danny O'Brien and the connections are going to have a lot of fun with him," Moloney told broadcaster Racing.com.