Sweden’s Armand Duplantis broke his own men’s pole vault world record on Monday, soaring 6.19 metres on his third attempt at the Belgrade Indoor Meeting in a performance he could only describe as “perfection.” The 22-year-old improved the previous record by one centimetre. Duplantis had already secured the victory in Belgrade before he made the record-breaking leap, nudging the bar with his knee slightly but nevertheless clearing it before jumping off the mat and pumping his fists in celebration. “A height like 6.19—it demands perfection,” said Duplantis. “All the numbers have to be right. So I just figured it out on that last attempt and I was able to get over it finally.” Duplantis now owns the three highest marks in the discipline. He broke Frenchman Renaud Lavillenie’s 6.16m world mark with a clearance of 6.17m in February 2020 and then eclipsed that record just a week later by another …