Five athletes made history for all the wrong reasons at the World Indoor Championships in Birmingham on Friday morning.
Every athlete in a heat of the men's 400m were disqualified - a first for world athletics.
Qatar's Abdalelah Haroun, who won outdoor bronze in London last year and was considered one of the favourites for gold, was the first to go when he was shown a red-card after a premature movement in the blocks.
The four remaining athletes then battled it out, and it looked as if Bralon Taplin of Grenada, holder of the quickest time this year, was the winner having completed the lap in just over 46 seconds.
But, when race officials watched the tape back, they realised that every athlete had encroached into someone else's lane at some point in the race.
Of course, this is an illegal manoeuvre in 400m track racing, meaning that every single runner was disqualified from the heat.
This meant they had no choice but to disqualify Taplin, along with Steven Gayle from Jamaica, Austria's Austris Karpinskis, and Alonzo Russell of the Bahamas, all on lane infringement offences.
According to the BBC's statistician Mark Butler, this was the first time in history of athletics that every competitor in a race has faced disqualification.
He tweeted the below following the crazy outcome.
And you can watch the race in the video below.
So who made the biggest error? That's down to you to decide, but it's safe to say all five didn't do themselves any favours.
However, some eagle-eyed tweeters noted that, in 1944, although Claude Young won the race to be crowned US 100m champion, it turned out to be an exhibition after every athlete had false-started.
So, history made in World Championship athletics, perhaps.
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