ITV Racing has full dress rehearsal at Cheltenham Showcase meeting

• Ed Chamberlin leads team in dummy run for 2017 broadcasts
• Use of drone camera is most striking aspect of new coverageThe possibility of seeing a new star of the jumping game drew more than 10,000 fans here on Friday for the first day of the 2016-17 season at the home of the National Hunt Festival but this year there were glimpses of the future on both sides of the running rail.ITV Racing, which will take over terrestrial coverage of the sport from Channel 4 when it broadcasts the N