Dropping the baton: Great Britain's chequered 4x100m relay history
The final of the 4x100m relay takes place tonight, but Team GB won't be in it after they were disqualified during the heats.
When Adam Gemili collected the baton from Dan Talbot, but far after the yellow mark on the track by which point the changeover must be completed, the latest chapter of Team GB's relay woe was written.
Here, we take a look back at the dropped batons - but also the rare moments of glory for Team GB.
Click here or click 'VIEW GALLERY' to launch our guide.
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