An Oldham Athletic fan was stabbed after the team lost to hosts Liverpool 0-2 in the FA Cup Sunday.
Merseyside Police said the injured 35-year-old man flagged down a passing ambulance in the Anfield area after a disturbance at about 17:00 GMT, the BBC reported.
A spokesman said the fan of the English Division One team, whose injuries were not life-threatening, is refusing to talk to detectives.
