Olympic champion Masai Russell set a new world record in the women’s 100m hurdles at the Diamond League meet in Zurich on Thursday. The 26-year-old American clocked 12.09 seconds to beat the previous best of 12.12sec set by Nigeria’s Tobi Amusan at the Eugene World Championships in 2022. Russell, whose previous best wa…

…looking visibly emotional as she stood at the side of the track in Birmingham.The 800m Olympic champion has been competing over the short distance in a bid to improve her first-lap speed and challenge the 800m record later this summer, after breaking the indoor world record with a time of 1:54.87 in France earlier this…