batters faced not recorded

[Morrisp]

With pitcher fatigue off, we currently simulate pitcher fatigue both in a game and over a series of games by linking days rest to Innings Pitched. Innings Pitched is easy to monitor because it is recorded in the boxscores. We want to switch to pitcher fatigue on and simulate pitcher fatigue over a series of games by linking days rest to batters faced in the previous game. Unfortunately, batters faced is not recorded in game once the pitcher is no longer pitching or after the game is over in boxscore. Is it possible to add Batters faced in a game to the pitcher screen and/or the boxscore so it can be referred to after the pitcher has stopped pitching?