Happy days as Autumn Carnival campaign begins Damien Oliver rides Happy Trails to a win at Flemington last spring. Picture: Jay Town. HAPPY Trails will begin a busy Sydney Autumn Carnival campaign in Saturday's Canterbury Stakes at Rosehill. But the appearance of two Gai Waterhouse-trained stars Pierro and More Joyous has the top-line South Australian a $21 chance in the $350,000 Group 1 feature. Morphettville trainer Paul Beshara said all was well with the last-start Emirates Stakes winner who was given a hit-out with star rider Glen Boss in the saddle this week. "He had a little gallop with Bossy (Glen Boss) on board," Beshara said. He (Boss) was very happy, I was happy and the horse is happy. Happy Trails arrived in Sydney at Anthony Cummings' stables last Friday and Beshara said he had come back a stronger horse this campaign. "He's surprised me, he's improved," Beshara said. Happy Trails' ultimate Sydney goal is the $2million Group 1 Doncaster Mile at Randwick on April 20. Despite some impressive trial form leading into his Sydney return, Beshara was cautious about resuming against such high-quality opposition. He won the Spring Stakes first up in Adelaide before his successful Melbourne Spring Carnival, but Beshara said it was a vastly different scenario in Sydney taking on the likes of Pierro and More Joyous at his first run for more than four months. "The Spring Stakes was a Group 3 compared to a Group 1 (this campaign), it's a big difference," he said. I expect him to run in the first half of the field. He'll hit the line hard. I expect him to run a nice race. He's had two trials in Adelaide, he'll go from the Canterbury Stakes into the George Rider (1500m) a fortnight later and then the Doncaster. Touch wood we'll also back him up a week later in the Queen Elizabeth. Happy Trails opened a $21 chance with TAB Sportsbet yesterday, while the Gai Waterhouse pair of Pierro and More Joyous couldn't be separated at the top of betting as $2.40 equal favourites. Pierro and More Joyous are $2.40 equal favourites. STAR APPRENTICE Jamie Kah recorded her 100th career win when she partnered Set To Excite to victory at Balaklava yesterday, her milestone coming just 361 days after making her riding debut.