Oldham sub Paul Green made Charles - Cook work in the 55th minute .
The 23 - year old was able to pull off a routine stop , as John Sheridan elected to make his final two changes of the game before the hour mark .
Oldham sub Paul Green made Charles - Cook work in the 55th minute , but the 23 - year old was able to pull off a routine stop , as John Sheridan elected to make his final two changes of the game before the hour mark .