Zac Purton has clinched the Hong Kong jockeys' premiership for the first time, ending the dominance of champion rider Douglas Whyte.

Purton notched just one victory at Sha Tin on Tuesday but it was enough to give him an unassailable lead in the title race which Whyte has won for the past 13 seasons.

The Australian's nearest rival Joao Moreira booted home four winners at the meeting to take him to within 15 of Purton's tally with one race day remaining.

Purton has become just the second person to ride 100 winners or more in a Hong Kong season with Whyte holding the record of 114 set in 2005-06.

Purton needs three winners at the final meeting to equal that mark.

"It has been a long and hard battle for the jockeys' premiership but I enjoyed it," Purton told the Hong Kong Jockey Club website.

"I will continue to try my best to break Whyte's record on Sunday and I will come back with confidence next year for the back-to-back title bid."

Whyte appears likely to finish third on the premiership this year.

Meanwhile, the Sha Tin meeting was also memorable one for Tommy Berry who scored a trio of victories for three different trainers, taking his season tally of wins in Hong Kong to 22.

The gifted rider will return to Sydney at the end of the Hong Kong season to reunite with trainer Gai Waterhouse as her No. 1 stable jockey.

The battle for the Hong Kong trainers' premiership will go down to the wire with John Size sitting on 60 wins, one ahead of Caspar Fownes.