It was his first day on the job and he ended up being slashed in the throat early on Sunday.
But the bouncer in a bar at St James Power Station surprised everyone by springing to his feet to chase the attacker and his three friends.
They managed to escape, but the police arrested a suspect in the vicinity of Clementi Avenue 5 yesterday after "extensive ground inquiries".
A police spokesman said the victim was believed to have been attacked after the suspect, 22, was told to leave the bar because of his rowdy behaviour.
The 29-year-old bouncer, who was bleeding profusely, collapsed while chasing his assailant.
His friend, a fellow bouncer at St James, said: "He was losing a lot of blood and I carried him to a spot under the bridge which connects St James to VivoCity to wait for help.
"Even in his state, he kept saying, 'Don't let them get away'."
The friend, who gave his name only as Benjamin, said a patron had alerted him to the fight outside the bar at 4.30am.
He rushed to the bar, which plays Hindi songs, and saw the bouncer being attacked by a youth.
Benjamin, 38, who described himself as a seasoned bouncer, told The New Paper on Monday:
"It looked like a normal punch at first. But something left a deep hole (on the right side of his neck). I could see his Adam's apple.