An 18-year-old man was shot to death while standing on the sidewalk in Visitacion Valley, police said.
The man -- who has not yet been identified -- was on the 200 block of Rey Street at about 10 p.m. when two men approached and fired several shots before running away.
The victim was taken to San Francisco General Hospital and died shortly before 2 a.m. Friday, according to police.
The shooting brings the city's homicide count to 31 this year. In July, 20-year-old Sean Everette Wilson was shot and killed in Hayes Valley.
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