British champion, walking before the home crowd, accelerated the pace, dropping many off the pack.

But out in front, Bosworth was given more scrutiny and earned the deadly red card disqualifying him from the race.

By 15 km in 59:33 (19:45), the pack was down to eight and defending champion Miguel Ángel López (Spain) was no longer one of them.

[3] Rallying from a 23-second deficit at ten km, South African Lebogang Shange came back to the group as others dropped off.

By the last two km loop, the leaders Éider Arévalo (Colombia) and Sergey Shirobokov, an Authorised Neutral Athlete were in racewalking's version of a sprint finish, dropping Shange, Christopher Linke (Germany), Dane Bird-Smith (Australia), Wang Kaihua (China) and Caio Bonfim (Brazil) to fight for bronze.