Great Britain's Tom Bosworth was disqualified from the Men's 20km at the World Athletics Championships in London for three red cards.
The 27-year-old, who set a one-mile walk world record at the Anniversary Games at the London Stadium in June, was penalised for technique infractions before the halfway point in the race.
Bosworth was leading the pack on the course by Buckingham Palace when a marshal stepped in and informed him that a third penalty and resulting disqualification had been imposed -- prompting the Briton to fall to the ground in despair.
He said afterwards: "I was feeling great and walking faster than I ever have done.
"It all seemed to be going fine until 12km, and I got two red cards on that lap. I knew I had one from earlier, so I was just telling myself to concentrate.
"But I put in a burst and was pushing the boundaries, but it was a real shock to get the third red card. I think that is why it is difficult to take because I wasn't feeling physically bad.
"I felt fit and strong enough to go with the leading pack. It is heart-wrenching because you can't physically finish a race as you are pulled off the course.
"I haven't been disqualified for four and a half years so to do it here in London is devastating."
The race was won by Eider Arevalo, who clinched Colombia's first medal of the Championships.