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. At the first handoff, Ujah passed efficiently to Zharnel Hughes, pulling away from Jamaica to their inside. On the outside, Ryota Yamagata left too early for Tada to catch him inside the zone, Japan unable to make the handoff and ending their race. 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. Italy passed from Fausto Desalu to Filippo Tortu about metre down from team GB. Behind China, Jamaica and Germany, Rodney passed to Canada's star Andre De Grasse almost 5 metres behind. From there De Grasse took off, passing three teams to move into third place, while over the final 50 metres Tortu produced a burst of speed combined with a perfectly executed final dip to take gold on the line. Italy had set a new national record with a time of 37.50, the 19th fastest performance ever and the 2021 world lead. China equalled their national record with 37.79, while Ghana was disqualified from 7th place because of a faulty baton pass.
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.[3][4] On 18 February 2022, the British team was disqualified and officially stripped of the silver medal.[5][6][7] The International Olympic Committee requested all members of Great Britain's relay team to return their medals. Canada's relay team was upgraded to silver, and China's relay team was upgraded to bronze.[8] This was also the first ever medal for Team China in an Olympic athletics relay event. The medal reallocation ceremony of the bronze medal was held at the Hangzhou Olympic Sports Centre Stadium on 4 October 2023 after all the events of the Asian Games ended on that day, along with the medal reallocation ceremony of women's 20 km walk of London 2012.
Background
This was the 25th 4 x 100 relay; it has been run every Olympics since 1912.
Where an NOC placed in the top 8 at both the 2019 World Championships and the 2021 World Relays, the quota place was allocated to the world top list as of 29 June 2021. In this case, 4 teams did so, so there are 4 places available through the world rankings.
A total of five athletes may be entered for a relay team. Should a NOC have also entered individual athletes in the corresponding individual event (100 m), the entered individual athletes must be included in the total of five (5) athletes entered for the relay event. In addition of five, NOCs can nominate a maximum of one alternate athlete for each team.
The qualifying period was originally from 1 May 2019 to 29 June 2020. Due to the COVID-19 pandemic, the period was suspended from 6 April 2020 to 30 November 2020, with the end date extended to 29 June 2021. The qualifying time standards could be obtained in various meets during the given period that have the approval of the IAAF. Both indoor and outdoor meets are eligible. The most recent Area Championships may be counted in the ranking, even if not during the qualifying period.[2][10]
Qualified teams
A total of 16 NOCs qualified.
Entry number: 16 teams of 5 athletes each (80), plus alternates.
