A new generation will reignite memories of an old one when Luke Dittman teams up with the Allan Denham-trained Agister at Randwick on Saturday.

The 22-year-old apprentice is the son of Hall of Fame jockey Mick Dittman who enjoyed remarkable success with Denham's father, the late Jack Denham.

Mick regularly rode Jack's top racemares, Joanne and Triscay, both owned by the White family.

Their famous purple and white colours will be worn by Luke aboard Agister.

"This is my first ride for Allan so hopefully something kicks off from here," Luke said.

"If I have any sort of relationship with him like my father had with his old man I can't complain."

Luke is apprenticed to Warwick Farm trainer Craig Ritchie who he linked with in September after all but giving up on his riding career.

It was a career which began under Alan Jones in New Zealand before Luke moved to the Gold Coast where injury led to a weight struggle.

He headed to Europe where he secured a plum apprenticeship with Luca Cumani, however, a rule change meant he could not get licensed to ride there.

So after a few months putting Cumani's team through their paces at trackwork, Dittman returned home to forge a new career, this time as a bloodstock agent in Sydney.

But then, his weight stabilised. The hunger to ride returned.

"After I got settled in, I realised my weight was coming good so I decided to take a licence out and here I am now," he said.

"When I originally came down I had no intention of riding."

Luke is hoping to land his first Sydney city winner at Saturday's Kensington meeting where, along with Agister, he rides Just A Girl in the Coolmore Australia Handicap (1150m).

It is a thrill he has already tasted - for a few minutes anyway.

"I rode a winner Friday night at Canterbury last week but it got taken off me on protest," Dittman said.

"But I had my first decent crack at a city winner in Sydney at least."