Timing the Arc
Also known as: arc timing, reading the drop
Timing 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.
Slow pitch gives hitters far more time to track the ball than fast pitch, but that extra time can create its own trap. Some hitters watch the rise of the arc and start their swing based on habit rather than the actual descent. They often arrive early or late. Good arc timing means reading the peak height and descent speed of each specific pitch. That is because arc height, speed, and distance all interact to change the total time of flight from release to the hitting zone.
Example
A hitter tracks the ball from release through its peak and starts the load exactly as it begins its final descent, arriving at contact in perfect rhythm regardless of whether the arc was high or flat that at-bat.
Why it matters
Arc timing is the foundation of every other slow-pitch hitting skill, since even great mechanics cannot produce good contact at the wrong moment. Motion Lab does not see the pitch. As a result, it cannot measure its flight time or time your swing against it. It does flag drifting forward before contact.
How it shows up on video
Good arc timing shows the swing trigger beginning reliably at the same phase of the pitch's descent regardless of that specific pitch's peak height, rather than always starting at a fixed time after release.
Common mistakes
- Starting the swing based on a fixed internal count rather than the ball's actual observed flight
- Not adjusting timing between a high-arc pitcher and a flatter one within the same game
- Watching only the release and not tracking the peak and descent, which are what actually determine arrival time
In SwingVantage Motion Lab
Motion Lab does not see the pitch, so it cannot measure its flight time or time your trigger against it. It does flag drifting forward before contact, which is often what a mistimed arc looks like.
Frequently asked questions
How do I get better at timing the arc?
Practice tracking the ball out loud (calling "high" or "up" at the peak) before starting your load. As a result, your trigger becomes tied to the ball's actual flight rather than a fixed internal count.
Does arc timing change between pitchers?
Yes — different pitchers use different arc heights, speeds, and release points, so a hitter has to recalibrate timing at least briefly against each new pitcher.
Related terms
- Reading Pitch HeightReading pitch height is judging early how high a pitch will peak: low legal, mid-range, or high. It lets a hitter set timing and bat path in advance.
- Adjusting to a High ArcAdjusting to a high arc means triggering the swing later and steepening the bat path slightly. The pitch peaks near the legal maximum and drops sharply.
- Adjusting to a Flat ArcAdjusting to a flat arc means triggering slightly earlier with a flatter bat path. The pitch peaks near the legal minimum and arrives faster and flatter.
- ArcThe arc is the high, looping flight path a legal slow-pitch delivery must follow. USA Softball requires a peak between 6 and 12 feet. USSSA instead requires at least 3 feet of arc above the release point and caps height at 10 feet above the ground. Hitters time their swing to the ball's descent, not its rise.
- Stride TimingStride timing is when the front foot lands during the pitch's arc. In slow pitch, it should land early, near the peak, with the hands back for power.
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