Duplantis walked away with victory with a best vault of 5.82 metres, far off the world outdoor record of 6.15m he set in Rome last week.
World 200m champion Noah Lyles admits long-term psychological problems compounded by pandemic, Olympic postponement, BLM movement
American Lyles, who won gold in the 200 metres and the 4x100m relay in Doha last year and was hotly tipped for the success at the Tokyo Games, announced earlier this month that he was on anti-depressants.
International Association of Athletics Associations removes 200m and steeplechase disciplines from Diamond League 'core' list for 2020
There will be 12 disciplines staged at each of the 15 IAAF Athletics Diamond League meetings with the season beginning in Doha on 17 April.
Two-time Olympic champion Caster Semenya will not run her specialist 800m distance at Rabat on Sunday despite having received an invitation to do so, in the latest twist of her bitter court battle over gender rules.
Star Indian javelin thrower Neeraj Chopra has undergone elbow surgery, raising doubts over his participation in the IAAF World Championships.
Much is expected of Van Niekerk, the world and Olympic champion who smashed American Michael Johnson's world 400m record when winning gold in Rio last summer in 43.03sec.
Jamaican sprint superstar Usain Bolt ran a season's best of 9.95 seconds to win the 100 metres at Friday's Diamond League in Monaco
Sudha Singh, who broke the national record in women's 3000m steeplechase in Shanghai, said that her performance will boost her confidence ahead of the Rio Games