BBC pundits are left confused at the World Indoor Championships in Birmingham as every 400m runner from the third heat is disqualified.

First Abdalleleh Haroun is ruled out for a false start and then everyone else is disqualified for lane infringements, even though a replay appears to show gold medal favourite Bralon Taplin sticking to his lane.

WATCH MORE: Highlights - Johnson-Thompson second after three events

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