Steve Gill, chief executive of the rugby league side, is recovering at home following today's incident while the club thanked fans for their calls and concerns.
In a statement they said: “Castleford Tigers can confirm Steve Gill was the victim of a vicious assault on Bridge Street in Castleford.
“On behalf of everyone here at the club we wish Steve a quick recovery. We’d like to take this opportunity to thank the emergency services for their quick and professional response.
“Castleford Tigers now ask could all fans and the media respect Steve’s privacy while he recovers at home with his family.”
It comes after The Tigers handed Leeds one of their heaviest ever defeats in a 66-10 victory last night.
Police were called at 11.56am today and have arrested a 58 year-old man in connection with the incident and he is currently in custody being questioned..