A man was left with a fractured eye socket after a mass brawl involving 60 people outside a Rotherham pub, a court heard.
Ricky Mangham joined in the punch-up outside The Sheppey on Grange Lane, Maltby, to stick up for his younger brother.
But he ended up felling Shaun Edwards with one punch, leaving him with swelling to the left of his face and a fractured eye rim.
Mangham, aged 25, admitted assault causing actual bodily harm when he appeared at Sheffield Crown Court for sentence.
Carl Fitch, prosecuting, said the 22-year-old victim had drunk about seven pints of beer with a friend on the night in question.
He said there was a brawl involving up to 60 people outside the pub and Mr Edwards ended up in an argument with Mangham and his brother due to a misunderstanding.
Mangham’s younger brother shouted at Mr Edwards and Mr Edwards felt a blow to the left side of his face and fell to the ground.
In a statement read to the court Mr Edwards said: “It happened for no reason and was completely unprovoked.”
Robert Smith, defending, said Mangham, of Bentley Road, Bramley, Rotherham, told police he believed Mr Edwards had offered to fight his younger brother.
He said he had just been to see his seriously ill father in hospital and was not in a good frame of mind.
Mangham was given a 12-month community order, ordered to carry out 150 hours of unpaid work, and given a three-month curfew order.
He was ordered to pay Mr Edwards £500 compensation.
Recorder Margia Mostafa told him: “You didn’t do your father or your family any favours by getting into this incident.”