Germany's David Storl retained his men's shot put title on Friday at the World Athletics Championships in Moscow.
The 23-year-old threw a season's best of 21.73 metres to edge out American world indoor champion Ryan Whiting (21.57m) while Canada's Dylan Armstrong took bronze (21.34m).
The title hinged on Storl's fourth round throw with Whiting having held the lead since the first round.
Storl, silver medalist at the Olympics last year, celebrated what was an impressive effort pumping the air with his fists, only to be brought down to earth as it was ruled a foul.
The German, though, protested and after long consultations, and having it turned down first, the judges revoked their decision and ruled it legal, which sent him into the lead.
Veteran American Reese Hoffa had held bronze position for most of the competition but lost it when Armstrong, as he had been threatening to do, produced a decent effort in the penultimate round to edge into the medal placings.
Double Olympic champion Tomasz Majewski struggled to get any rhythm throughout but finally in the fifth round he posted a season's best effort of 20.98.
It was, however, well short of seeing the 31-year-old Pole - who spent most of the final wringing his hands in despair at his performance - secure his first world title in five attempts.