All Rules
Search across every rule in the library. This view is ideal for quick lookups, studying, or exploring advanced topics.
Force Play
A force play occurs when a runner is legally required to advance to the next base because the batter has put the ball in play and become a runner...
Read Full Explanation →Obstruction
Obstruction occurs when a fielder, without possession of the ball and not in the act of fielding it, impedes the progress of a runner...
Read Full Explanation →Obstruction Differences Across Rulebooks
The definition of obstruction is generally consistent across rulebooks: a fielder, without possession of the ball and not in the act of fielding it, impedes the progress of a runner...
Read Full Explanation →Offensive Interference
Offensive interference is an act committed by a batter, batter-runner, runner, coach, or other offensive team member that illegally hinders a fielder’s opportunity to make a play...
Read Full Explanation →Runner Interference (OBR)
Runner interference gets its own explanation because it can occur in a variety of ways...
Read Full Explanation →Runner Hit by Live Ball (OBR)
First, we are seperating this rule by ruleset (other articles are published for other rulesets) because the rules differ significantly...
Read Full Explanation →Runner Hit by Live Ball (USSSA)
First, we are seperating this rule by ruleset (other articles are published for other rulesets) because the rules differ significantly...
Read Full Explanation →Runner Hit by Live Ball (Differences Across Rulebooks)
For the most part, the rules for a runner being hit by a live ball are similar across rulebooks...
Read Full Explanation →DP/FLEX Explanation
The DP/FLEX rule is known for being notoriously complicated...
Read Full Explanation →Batter Interference
The batter can commit interference in three main ways: 1) Interfering with the catcher's throw to a base, 2) Interference on a play at the plate, and 3) Backswing/Follow through interference...
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