LEGENDARY Lester Piggott, whose exploits in the saddle continue to defy his 57 years, arrived in Hongkong last night for a one-month riding stint. Piggott flew in 24 hours late from Dubai, where he spent an extra day, and will have his first rides at Sha Tin on Saturday. ''I feel fine. I rode in Dubai and I am looking forward to riding in Hongkong. I have been coming to Hongkong for 20 years and I am always pleased to come back,'' he said.