Leaving the Base Early in Fastpitch Softball
In fastpitch there's no leading off: a runner has to keep a foot on the base until the pitch leaves the pitcher's hand. Leave a beat early and the umpire calls her out.
When it comes up
It's every pitch with a runner on: fastpitch runners can't take a lead, so a runner times her jump to the exact moment the ball leaves the pitcher's hand. Umpires and the defense watch for anyone who leaves too soon.
What the call is
Break contact before the pitch is released and you've left early, so you're out.
- The play's blown dead, so an early jump can't turn into a free base.
- The fix is timing: foot down, read the release, go as the ball comes out.
- Rocking into your lead is legal, since the foot never actually leaves early.
- The best runners look early but they're right on the release.
Why the rule exists
No leads keeps a short base path fair: inching off early would make stealing and first-and-third plays nearly impossible to defend, and tying the jump to the release gives both sides a clean start. That timing shapes almost everything a runner does, from steals to scoring on a passed ball.
How it changes by age
With coach pitch there may be a different marker for when a runner can go, sometimes when the ball reaches the plate or is hit, so ask your league.
With a live pitcher the rule is clean: stay on the base until the ball leaves her hand, which is where reading the release starts to matter.
Test yourself
Runner on first wants to steal second. She pushes off the base just before the pitcher lets go of the ball. The umpire sees it. What's the call?
Show the call
The runner is out for leaving early.
In fastpitch you have to keep contact with the base until the pitch is released, so leaving a beat early is an out.