Three injured in inner-city Sydney brawl

Two teenagers have been hospitalised and another injured following a brawl in Sydney's inner west.

Police were called to a park on Federation Road just after 10pm Friday where they found an 18-year-old man with a stab wound to his abdomen, a 17-year-old girl with a laceration to her leg and a 16-year-old boy who had been knocked unconscious.

The 18-year-old and the girl were taken to Royal Prince Alfred Hospital. Police were told that about 20 people confronted the teenagers before the fight began.