I have heard of roadies, who are the "behind the scenes" workers who set-up and supervise equipment used in entertainment. Generally this term refers to music groups, although if the entertainment was provided by musicians, etc., they might have their own roadies working at the sports games. In my French/English dictionary, roadie is used in both French and English.
Also, games played away from one's own venue are referred to as "on the road".
Anyway, I am not sure if this is what you are looking for or not.
Good luck!