By Wally Pyrah BANK on former three-time British champion jockey Silvestre de Sousa to continue his winning streak, when he arrives at Sha Tin in Hong Kong on Saturday morning, with a full book of rides on the ten-race programme. De Sousa can’t stop riding winners at present, with six wins from his last 14 rides, and including a four-timer at Sha Tin last Sunday. With 13 victories since arriving in Hong Kong in September, De Sousa is the go-to jockey for trainers in the territory at present, and is giving champion jockey Zac Purton a run for his money when it comes to riding winners. It’s a sh…