Armand Duplantis picked up from where he left off at his world record-setting, gold medal-winning showing at the Paris Olympics by dominating the men’s pole vault at the Lausanne Diamond League meet on Wednesday. The meeting is the first on World Athletics’ elite circuit since the end of the Paris Games. Duplantis defended his Olympic gold in the Stade de France in some style, improving his own world record to 6.25 metres.