William Pike has celebrated his first Group victory in Hong Kong but it won't be enough to convince the top West Australian rider to renew his licence with the Jockey Club.Pike, who has ridden 11 winners in Hong Kong this season, will return to Perth at the end of January to prepare for the birth of his first child.The winner of the past two Perth jockeys' premierships, Pike was victorious aboard the John Moore-trained Craig's Dragon in the Group Three Bauhinia Sprint Trophy at Sha Tin on Sunday

William Pike has celebrated his first Group victory in Hong Kong but it won't be enough to convince the top West Australian rider to renew his licence with the Jockey Club.

Pike, who has ridden 11 winners in Hong Kong this season, will return to Perth at the end of January to prepare for the birth of his first child.

The winner of the past two Perth jockeys' premierships, Pike was victorious aboard the John Moore-trained Craig's Dragon in the Group Three Bauhinia Sprint Trophy at Sha Tin on Sunday.

"It is making it a bit harder to leave now that I'm finally riding some winners, but at the same time I am leaving Hong Kong in good stead and I can't see why I won't be able to come back at some stage in the future," Pike told the South China Morning Post.

"The best thing for me to do personally at the moment is to head home to Perth, and I might even be able to peg back a few of the boys at home and ride some winners there."

Former Australian trainer John Size continued his climb up the premiership table with a treble, his sixth in the past six weeks.

Size combined with champion jockey Douglas Whyte for wins with National Treasure, Presto and Brave Kid to take his season tally of winners to 24, three behind premiership pacesetter Tony Cruz.

Meanwhile, two separate suspensions for careless riding did little to dull Matthew Chadwick's afternoon at Sha Tin.

The outstanding young talent graduated to the senior jockey ranks in record time when he notched his 70th win aboard Multiglory, achieving the transition just a year and three weeks after beginning his apprenticeship.

The previous benchmark was set by Howard Cheng who took just over two years to graduate from the junior riding ranks to become a senior hoop.

Chadwick began his career in Australia where he spent time with Maryann Thexton at the Gold Coast and Brett Bellamy at Coffs Harbour.