[2] During the final, Chijindu Ujah gave Great Britain the lead out of the blocks, Japan's Shuhei Tada and Canada's Aaron Brown also gaining relative to the stagger.

Down the backstretch, 100 metres champion Marcell Jacobs received the baton from Lorenzo Patta and opened up space on Xie Zhenye to his inside, pulling Italy into contention, with Canada's pass from Jerome Blake to Brendon Rodney keeping them in the mix.

China loaded up their third leg with ace Su Bingtian pulling back some ground on GBR's Richard Kilty, while Jamaica had Yohan Blake, the second fastest man in history, running the bend.

Kilty passed efficiently to Nethaneel Mitchell-Blake, while Wu Zhiqiang had to slow down and look back to find Su with the baton, costing China the chance to battle for gold.

During the Olympics, British athlete CJ Ujah tested positive for anabolic agent ostarine and steroid-like S-23 (drug), and was provisionally suspended, confirmed on 14 September by B-sample.

Source: 4x100 Metres Relay - men - senior - outdoor - 2021 Season's bests for the other qualified teams: The event continued to use the two-round format introduced in 2012.