By Guy Aspin, Press Association
Published: 18:20 BST, 13 August 2017 | Updated: 18:21 BST, 13 August 2017
Tom Bosworth was left heartbroken after seeing his hopes of a World Championship medal in the 20 kilometres walk dashed by a disqualification on the Mall.
The 27-year-old collapsed to the side of the road in tears after a third red card brought his race to a dramatic end.
Bosworth, who finished sixth at last year's Olympics in Rio, was hoping to become the first Briton to claim a major championship medal in the event since the 1964 Olympics.
Tom Bosworth was