Sheppey United are hoping first-choice keeper Aiden Prall hasn’t done too much damage after coming off injured on Saturday. Prall’s early exit from the pre-season game at Faversham Town led to a headache for the club’s management team as they had no back-up keeper on hand – leading to some frantic calls and an appearance in goal for their analysis assistant. Second-choice stopper Hadley Glock wasn’t available for the match due to personal issues but answered the call for assistance to play in the second half of the game that Faversham won 4-1. In between that, Tyler Ross gave an admirable perf…