The air ambulance was mobilised following reports that a man had fallen on a tree branch and impaled his neck in Durrington, a spokesman said.
The ambulance service spokesman confirmed two response cars and an ambulance were sent to the sports ground in Pond Lane at around 11.40pm last night (Tuesday, August 28).
The air ambulance was also mobilised but stood down when it was reported on scene that his neck had not been impaled, the spokesman said.
The 32-year-old patient was taken to Worthing Hospital for treatment to a neck injury, confirmed the spokesman.
The fire service assisted with the extrication of the patient, added the spokesman.
The fire service confirmed that one fire engine and a heavy rescue tender from Worthing were sent to the scene after the ambulance service asked for assistance.
Crews left the scene at 12.20am.