Bermuda’s Olympic champion Flora Duffy got her World Triathlon Championship Series title defence off to the ideal start by holding off three Britons to win the women’s race here on Friday. In her first return to competitive action since winning on her Super League debut in Malibu, California in September, the 34-year-old showed no signs of loss of form with a dominant display on the challenging Yas Marina Formula 1 circuit. The performance came despite Duffy’s return to Bermuda last month for week-long celebrations, which included a one-off national holiday to mark her Tokyo victory in July. D…