A misunderstanding in a Stowupland pub led to a man being attacked with a pool cue, a court heard.
Keither Maddock, 47, intervened in a situation at The Crown on February 2 which he believed threatened some of his friends.
The incident left victim Leon Moore requiring six stitches to his head.
At Ipswich Crown Court on Wednesday, Maddock, of Gislingham Road, Finningham, pleaded guilty to assault causing actual bodily harm and was given a 12-month prison sentence, suspended for 18 months.
The court was told that Mr Moore, 25, had become involved in an argument with another customer.
Juliet Donovan, prosecuting, said Maddock, a self-employed builder, ‘jumped in’ brandishing a pool cue and struck Mr Moore twice on the head.
In mitigation, Roger Thomson said Maddock, who had been drinking, thought something was about to ‘kick off’ and accepted what he had done was wrong immediately after the attack.
He said Maddock had been playing pool and had not deliberately picked up the pool cue as a weapon.
As well as the suspended sentence, Maddock received 18 months’ supervision, 200 hours’ unpaid work, was ordered to pay £500 compensation and £200 costs and was banned from entering The Crown for 18 months.