Coaching youth tournament ball team.
We keep some very basic stats during games that assist in making objective decisions during our tournaments. Such as:
- ball/strike percentages for our pitchers. We've observed when we don't throw a certain percentage of strikes, we lose. The stats help us make a decision to pull a pitcher before its too late.
- We also record where opposing hitters have a tendency to hit. If a guy is a pull hitter every time he's at bat, we can adjust for the next at bat.

This kind of info helps in tournament ball because we often replay the pool play teams in elimination games.

Are most of you experienced coaches doing this? If so, what other stats are key to keep. (Besides the normal scorekeeper book stats.) What else can help you statistically make real-time game decisions?

Not sure if I'd use it during youth ball, but most good high school programs do. We use stopwatches to help with base stealing issues, pitch efficiency charts to determine balls/strikes and 1st pitch strikes, info about hitting locations to shift our defense, etc. At the varsity level, the "little things" really add up...so I don't think you can go wrong having more information with which to make decisions....as long as you don't through good coaching instincts out the window in favor of generic stats.