PIX: Canada win men's sprint relay as US blow it; Chebet double

IMAGE: Canada's Brendon Rodney, Jerome Blake, Andre de Grasse and Aaron Brown celebrate after winning gold in the Olympics men's 4x100m Relay final at Stade de France, Paris, on Friday.......

22-month doping ban for British Olympian Chijindu Ujah

IMAGE: British sprinter Chijindu Ujah has been banned till June 2023, for a doping violation at last year's Tokyo Olympics Photograph: Molly Darlington/Reuters British sprinter Chijindu Ujah has......

Tokyo medallist Ujah's B-sample tests positive, case referred to CAS

IMAGE: Nethaneel Mitchell-Blake of Britain is consoled by Chijindu Ujah of Britain after winning silver at Tokyo Olympics. Photograph: Reuters British Olympic 4x100m relay silver medallist......

Britain's men's Olympic 4x100 team told to return Tokyo silver

IMAGE: Britain's Tokyo Olympics silver medallists Chijindu Ujah, Zharnel Hughes, Richard Kilty and Nethaneel Mitchell-Blake pose on the podium with their medals from the men's 4x100 metres, at......

Britain stripped of Tokyo Olympics 4x100m silver

CAS upholds Chijindu Ujah's doping violation IMAGE: Britain's silver medallists Chijindu Ujah, Zharnel Hughes, Richard Kilty and Nethaneel Mitchell-Blake pose on the podium with their medals......