Leon Marchand makes his grand return to competition, with new challenges in mind / In Toulouse, Leon Marchand's swimming club is overwhelmed by requests / 'Exhausted,' Leon Marchand withdraws from Budapest world championships / Back in the pool, French swimmer Leon Marchand wins three World Cup titles in Shanghai / 'The French guy did alright!': Duncan Scott on new Olympic rivalry with Leon Marchand / Leon Marchand, four-time Olympic champion is still in his bubble, unfazed by new-found global fame / French swimmer Leon Marchand starts Olympic flame's journey to the Stade de France for the Paris Games closing ceremony / Paris Olympics: Leon Marchand and the 'impossible double' / Olympics: Leon Marchand and the 'impossible double'