The first thing to understand about CSFBL's bullpen logic is that there are two key components: Toast and Fatigue You can adjust how aggressive or conservative your manager is with Toast and Fatigue by adjusting your manager's tendencies on the Manager's Page.
Toast reflects a pitcher's performance, or lack thereof. A pitcher who is performing well has no reason to be concerned about toast. A pitcher who's getting hit hard may be toast.
Fatigue reflects a pitcher's wear-and-tear. As a pitcher's pitch count grows, he will start to fatigue. If a pitcher's fatigue gets below a certain threshold, he will be pulled.
It's a good idea to start in the middle and work your way up or down. Setting either of these tendencies to the highest or lowest values can yield results much greater than you may expect!
CSFBL decides a pitcher is toast when his toast value is above a certain threshold. The toast value is based on:
Each of these factors combine to create the toast value. The higher the value, the greater chance the pitcher will be toast.
A pitcher's toast value is compared to his toast threshold, which is based on a fixed value plus the manager's toast setting. If the toast value is greater than the toast threshold, the manager makes a call to the bullpen.
Beyond the toast value system are some other parameters which can cause a pitcher to be considered toast, or could override the manager's decision and keep the pitcher in the game. Among these are:
Pulling a pitcher due to fatigue is a simpler process. Fatigue values are largely based on a pitcher's Endurance (EN) rating. Each pitch reduces some of a pitcher's Endurance, (at the rate of about 2 Endurance points lost per three pitches thrown). As a pitcher's Endurance goes down, his Fatigue goes up. When the Fatigue value falls below the manager's threshold, the pitcher is considered fatigued, and will be pulled. Starting pitchers do not get fatigue checks until after three innings.
Fatigue checks for starting pitchers are only made at the start of the inning, except in the following circumstances:
In close games, starting from the 7th inning, there are several situations which can cause the manager to put in a call to the bullpen to bring in a setup man or the closer. These checks are made after both toast and fatigue have been made, so a pitcher may not be toast and may not be fatigued, but still may be pulled to bring in your end-game relievers.
The decision to bring in a setup man or closer is based on the game situation:
The manager setting to "Always use closer in save situation?" will bring in the closer in all circumstances when it is the 9th inning or later and it is a save situation. The only exception is when the closer's fatigue is below the Relief Pitchers Fatigue Threshold manager's setting.
Now that we decided to make a call to the bullpen, what pitcher do we call? This decision is based largely on the inning and game situation. Each game situation has a preferred order of pitchers to bring in based on their role: Long Relief, Middle Relief, Setup, and Closer. In each situation, the first available pitcher gets the call. Available pitchers are those whose fatigue is above the Relief Pitcher Fatigue Threshold manager's setting.
The preferred order taken is based on the first successful match to the criteria below:
For the dual-slot roles (MR1/MR2 and SU1/SU2), the decision on which pitcher to bring in is based on the following criteria:
As a result, the dual-slot roles are good places to combine a left-handed and right-handed pitcher.