Derby County's Tom Lawrence and Reading defender Matt Miazga were involved in a furious bust-up which saw the pair sent off, but only after the final whistle had blown.
The pair approached each other and became embroiled in a physical altercation seconds after referee Scott Duncan had blown for full time for a game which had seen Derby beat Reading 2-1 at Pride Park.
In unpalatable scenes, the duo nonchalantly came together but then bumped chests before Chelsea loanee Miazga appeared to hit out at Lawrence, who scored Derby's first goal.
The duo consequently began to take turns in shoving each other before Lawrence appeared to lean in with a headbutt towards the Reading centre-back.