A man headbutted a footballer unconscious during an organised football match and police want to know more.
The 20-year-old victim was playing in Pingle Field, Bicester, at about 3.30pm on Saturday, when there was an altercation on the pitch and he was assaulted by another man.
He lost consciousness and was taken to the John Radcliffe Hospital in Oxford for treatment.
He has since been discharged.
Police are appealing to passers-by who may have witnessed the assault.
PC Bryan Groves, from Bicester Police Station, said: “Officers spoke to those who were present at the football match at the time of the incident, but we are keen to identify independent witnesses who may have been walking through Pingle Field at the time.
“Pingle Field has a path that runs between the town centre and Bicester Village and at weekends that path is very busy, so it is likely there are various people who may have seen what happened.
“If you witnessed the incident and haven’t yet provided your details to police, please call 101.”
If you don’t want to speak directly to the police, you can contact the independent charity Crimestoppers anonymously on 0800 555 111 or online at www.crimestoppers-uk.org.
No personal details are taken, information is not traced or recorded and you will not go to court.