Rules Explained
Plain-English breakdowns of the rules that confuse everyone — the infield fly, the dropped third strike, balks and the strike zone — with interactive checkers so you can test a real situation.
Try it yourself
Infield fly checker
Set the situation and see whether the infield fly rule applies.
Infield fly: batter is out
Runners on first and second (or loaded), fewer than two outs, and a catchable fair fly — the batter is automatically out. Runners advance at their own risk.
Can the batter run?
The catcher did not catch the third strike cleanly. Set the situation.
The batter can run to first
First base is open, so the batter may try to reach first before being tagged or thrown out.
Articles
The Infield Fly Rule, Explained
When the infield fly rule applies, why it exists, and an interactive checker you can run against a real situation.
5 min readThe Dropped Third Strike Rule
When a batter can run on a dropped third strike, with a decision tree covering every base/out situation.
4 min readWhat Is a Balk?
The common types of balk in plain English, with simple diagrams of what each one looks like.
5 min readThe Strike Zone, Explained
The official strike-zone boundaries with an SVG diagram, plus how youth umpires actually call it.
4 min readBaseball Bat Rules by League (USA, USSSA, BBCOR)
USA Baseball, USSSA and BBCOR bat certifications explained, and which one your league requires.
6 min read