Karabo Sibanda of Botswana, LaShawn Merritt of the United States, Steven Gardiner of Bahamas and Tony Mcquay of the United States (From L to R) compete during the men's 400m final of 2017 Doha IAAF Diamond League in Doha, capital of Qatar, May 5, 2017. Steven Gardiner claimed the title with 44.60 seconds. LaShawn Merritt and Tony Mcquay finished second and third with 44.78 and 44.92 rescpectively. (Xinhua/Nikku)
