Mondo Duplantis broke the pole vault world record for the 14th time with a jump of 6.30 metres on his third attempt as he secured a third straight world title on Monday. The gold medal was already secure for the American-born Swede when he had the bar raised a centimetre higher than the record height of 6.29m he managed in Budapest last month. He failed by the narrowest of margins at his first two attempts but, roared on by a captivated crowd at the National Stadium, slid over on the third with