Tag Up
A baserunner must touch their original base after a fly ball is caught before advancing. Failure to tag up means they can be called out on appeal.
Why "Tag Up" Matters
Understanding tag up helps you follow baserunning situations during a baseball game. Pair this with our rules guide, positions overview, and the full baseball glossary.
Related Baserunning Terms
- Bases Loaded
When runners occupy first, second, and third base simultaneously. Also called "bags are juiced." - Caught Stealing (CS)
When a baserunner is tagged out while attempting to steal a base. - Stolen Base
When a runner advances to the next base during a pitch without the ball being hit. Requires speed and timing.