Check Swing (Slow-Pitch)
Also known as: checking the swing, held-up swing
A check swing is when a hitter starts a swing but stops the bat short. Umpires judge whether the bat crossed the plate's plane or the wrists rolled over.
Slow pitch gives hitters more time to read the ball, so check swings are somewhat less common than in faster games. They still occur when a pitch's arc or speed changes unexpectedly late. The umpire's call generally comes down to whether the batter made a definite attempt to strike the ball. Signs of an attempt are the bat crossing the front plane of the plate or the wrists fully rolling over. The alternative is successfully holding up the swing in time. The plate umpire usually makes the call, and a base umpire may rule on appeal.
Example
Fooled by a pitch that drops flatter than expected, the hitter starts to swing but pulls the bat back before it crosses the plate. The umpire rules no swing after the batter holds up in time.
How it shows up on video
On video, a check swing is judged primarily by whether the bat head visibly crosses the front edge of home plate or whether the hitter's wrists complete their rotation, rather than by how far the bat traveled overall.
Common mistakes
- Assuming that stopping the arms is enough to avoid a strike call even if the bat head has already crossed the plate's front plane
- Not recognizing that wrist rollover alone, even with the bat stopped short of the plate, can still be ruled a completed swing in some leagues
- Guessing on a pitch and starting the swing so early that there is no physical way to hold up in time
Frequently asked questions
What determines whether a check swing is a strike?
Umpires generally look at whether the bat crossed the front plane of home plate or whether the wrists rolled over — either is usually treated as a completed swing attempt and called a strike.
Can a check swing be appealed in slow pitch?
Many leagues allow the plate umpire to ask a base umpire for help on a check-swing call, similar to other softball and baseball formats, though local league rules vary.
Related terms
- Early Commitment (Timing)Early commitment is locking into an irreversible swing before the pitch's location, height, and speed are confirmed. It is often a guess, not a read.
- Strike Zone – Slow-PitchThe slow-pitch strike zone (USA Softball) is the space over home plate between the batter's back shoulder and front knee. A strike is a legal, properly arced pitch that passes through that zone in flight. Mat-play leagues instead call strikes on pitches that land on the plate or strike mat.
- Rolling the Wrists (Slow-Pitch)Rolling the wrists is the top hand turning over the bottom hand before or at contact rather than after extension. The direct mechanical cause behind most rollover ground balls.
- Plate CoveragePlate coverage is the hitter's ability to make solid contact on pitches across the entire width of the strike zone — inside, middle, and outside — without giving any quadrant away to the pitcher.
- Timing the ArcTiming the arc is tracking a slow-pitch delivery from release through its descent. The swing starts so the barrel arrives just as the ball reaches the zone.
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