A man was stabbed in the chest during a brawl at an Inwood club early Wednesday, authorities said. Cops responding to a fight at the Opus Lounge on West 202nd Street at around 4:30 a.m. saw the 38-year-old victim stumble and collapse onto the street about a block away. Police are questioning a man, but he is not a suspect. The victim was taken to New York Presbyterian Hospital in critical condition, police said.

A teen was shot in Chelsea, cops said. The 18-year-old victim was accosted Monday by five men outside the Chelsea Houses on West 26th Street at around 8:15 p.m. before being shot in the left leg, authorities said. He was in stable condition at Bellevue Hospital.

Police on Wednesday released a sketch of the man wanted for pushing a 15-year-old girl into the path of a No. 7 train last weekend. The teen was standing on the Manhattan-bound platform of the 103rd Street station in Corona at around 8:40 p.m. Saturday when the attacker ran up to her and shoved her. The girl saved herself by tucking her body into the tight space between the rail and platform, allowing the train to rumble past her. The wanted man is Hispanic, in his 20s, standing around 5-foot-5, cops said.

A man who was badly beaten with a pipe in Woodside while trying to protect another man from two attackers died at Elmhurst Hospital on Wednesday — and police have arrested a suspect. Martin Quiej, 34, suffered severe head trauma from the attack on 54th Street near Roosevelt Avenue early Saturday, cops said. Quiej, who was from Guatemala, intervened when two men were beating someone outside his home, eyewitnesses told The Post. The thugs then started beating the hard-working husband and father with the pipe before running away, cops said. Police have charged Victor Mendoza, 21, with assault and attempted murder, but the Queens DA will likely charge Mendoza with murder.

A Queens Village man has been busted with drugs, weapons and cash, cops said. Bradford Perry, 48, was arrested Friday at his house. A search of the property turned up 750 glassines of heroin, two zip-close bags of marijuana and one of crack, a .45-caliber Desert Eagle pistol and $23,000, authorities said.

The death of a homeless man in Port Richmond has been ruled a homicide, the city Medical Examiner’s Office said. Police found Joshua Morrison, 54, lying unconscious and bleeding from the mouth at Harrison and Port Richmond avenues Feb. 17 and rushed him to Richmond University Hospital in critical condition. Morrison had been punched in the face by Adam Reuben, 54, during a fight, authorities said. The victim then stumbled backwards and hit his head on the pavement. He died in the hospital Feb. 29. Reuben was arrested days after the incident. Assault charges against him may be upgraded.

A badly decomposed body was found Wednesday off of Mariners Harbor. The male corpse was discovered in the water near the Bayonne Bridge at around 8 a.m., cops said. Officials said the body was so badly decomposed that the individual’s race and age could not be determined.

Three men robbed a cellphone store in East New York, police said. A 20-year-old woman working at a Metro PCS at Sutter and Pennsylvania avenues was manning the counter last Wednesday afternoon when the crooks walked in and looted the register, authorities said. The clerk told police one man kept lookout at the door while the others grabbed the cash and the clerk’s phone. The thieves are each about 5-foot-5, and were wearing jeans and black sneakers. They fled in a dark blue sedan.