A gutted Larry Cassidy has lost his appeal against a careless riding suspension, paving the way for Stathi Katsidis to partner Queensland filly Hidden Kisses in Saturday's Group One AJC Sires' Produce Stakes at Randwick.Cassidy has been riding on a stay of proceedings since appealing an eight-meeting suspension he incurred following his winning ride on Mr Nappy at Doomben last month.The former Sydney rider, who moved to Brisbane in December 2008, was confident of winning Tuesday's appeal so he c

A gutted Larry Cassidy has lost his appeal against a careless riding suspension, paving the way for Stathi Katsidis to partner Queensland filly Hidden Kisses in Saturday's Group One AJC Sires' Produce Stakes at Randwick.

Cassidy has been riding on a stay of proceedings since appealing an eight-meeting suspension he incurred following his winning ride on Mr Nappy at Doomben last month.

The former Sydney rider, who moved to Brisbane in December 2008, was confident of winning Tuesday's appeal so he could maintain his successful association with Hidden Kisses in the 1400-metre feature.

"I was quite confident of winning the appeal and I'm very disappointed it's come to this especially when there was other interference in the race I wanted to show the appeals panel but the stewards objected," Cassidy said.

"I feel very deflated right now and I won't be appealing further."

Cassidy has rejected numerous offers to ride in Sydney since he quit the harbour city to settle in Queensland.

"I've had a lot of opportunities to go back to ride in Sydney but I wanted to concentrate on winning the jockeys' premiership in Brisbane," Cassidy said.

Cassidy is in second place with 51 wins, five wins adrift of leading rider Jim Byrne in the battle for Brisbane's riding honours this season.

Hidden Kisses convinced trainer Robbie Heathcote she was worthy of a trip south for the Sires and Saturday week's Group One Champagne Stakes (1600m) following her last to first victory at Eagle Farm on March 20.

Cassidy has a big opinion of Hidden Kisses and believes she will eventually develop into an Oaks filly as a three-year-old.

Hidden Kisses cost $25,000 as a yearling and is raced by a syndicate of six owners which includes Richard Pegum, a hedge fund trader in London.

Cassidy has won three Sydney premierships and was looking forward to the Sires' Produce Stakes in his former home town.

His best performance in the race was on Golden Slipper winner Guineas who was runner up to the Clarry Conners-trained Encounter in 1997.

"It's a big step up in class for Hidden Kisses but she's come on since her last win," Cassidy said.

"Her last two wins were very impressive even though she didn't beat much.

"She'll have no problem going on after the Sires' and running 1600 metres in the Champagne as I really think she's going to be an Oaks filly next season."

Hidden Kisses, the winner of two of her three starts, will not have raced for three weeks when she lines up in the Sires' Produce.

"I'm not that worried about three weeks between runs as she hadn't raced for three weeks the last time she won," Heathcote said.

"She likes to get back in her races and my only worry is going to be the tempo.

"If she performs well in the Sires she'll go on to the Champagne Stakes and she'll be better suited over 1600 metres."