Two men have been locked up after using CS gas on their victim before beating and stabbing him.
At Ipswich Crown Court on Monday Kam Flynn, 18,of Blacksmiths Lane, Bury St Edmunds, and William Mackenzie, 20, of Park Lane, Newmarket were sent to a young offenders institution.
Both had pleaded guilty to an offence of wounding Joseph Farr, who was left with a knife in his arm, in an alleyway in Newmarket on November 8, 2013.
Judge David Goodin sentenced Mackenzie, who was on bail for other offences at the time, to two and a half years and Flynn to two years.
Prosecuting, Alison Ginn said it was alleged that following the breakup of a relationship, Mackenzie had threatened to stab anyone the woman went out with.
Miss Ginn said Mackenzie was subsequently convicted of assaulting the woman and damaging her property and while on bail awaiting sentencing had attacked Mr Farr for seeing her.
On November 8, Mr Farr arranged to meet Flynn to allegedly buy cannabis, said Miss Ginn, but when he arrived in the alley, Flynn sprayed his face with CS gas then Mackenzie punched him to the ground with Flynn joining in.
As the attackers fled, Mr Farr discovered a knife stuck in his arm. In hospital, doctors also discovered a puncture wound to his shoulder.
Joanne Eley, for Mackenzie, said he was remorseful and maintained that he did not know a gas canister or knife would be involved.
Appearing for Flynn, Hugh Vass said: “He was out of control on alcohol and cannabis.
“He has no recollection of having or using the canister.”