TOPSHOT - (FILES) In this file photo taken on July 04, 2017 Slovakia's Peter Sagan (2ndL) gives a kick of elbow and Great Britain's Mark Cavendish (L) falls near the finish line at the end of the 207,5 km fourth stage of the 104th edition of the Tour de France cycling race on July 4, 2017 between Mondorf-les-Bains and Vittel. One year after his exclusion from the 2017 edition of the Tour de France cycling race for elbowing Mark Cavendish in a hectic sprint finish, Peter Sagan makes a grand entrance comeback as a potential early stages winner and overall favorite for the best sprinter's green jersey. / AFP PHOTO / Jeff PACHOUD