The victim was left lying in a pool of blood when the scrap erupted in Smethwick, Birmingham, at around 12.50pm, witnesses say.
Cops say six men brandished weapons and a witness said one man was armed with a machete.
During the alleged altercation a silver Ford Fiesta had its windscreen smashed.
Police say two were injured but the extent of their injuries is not yet known.
Police are appealing for witnesses.
A West Midlands Police spokesman told The Sun: “Police received several 999 calls reporting disorder involving around six men with weapons on Bearwood Road, Smethwick at around 12:50pm this afternoon.
“A vehicle was damaged and two people are thought to have been injured, the extent of their injuries is not known at this stage.”
Daily Star Online has contacted West Midlands Police for comment