The swing path is the route your hands and bat take from the load to contact and through the ball. Coaching sources ask for a short, quick swing with the hands staying close to the body, and a path that stays in line with the pitch through the hitting zone, so you have more room for timing error. The app does not track the bat or the ball: it reads your hand path and arm and body positions from video, so any bat-path or attack-angle reading is an estimate from your hands.
Hands stay inside
Grip with your door-knocking knuckles lined up. This keeps your arms inside your body's frame so your hands can carry the barrel straight to contact instead of looping.
arms inside the frame of your body.
As you stride, keep your hands back and your front shoulder in. Don't let the hands drift toward the pitcher before the swing starts.
hands staying back while the front foot goes forward.
Start the swing with the hips, then the shoulders, and let the hands come last. Keep your hands between the ball and your body on the way to contact, a short, quick path rather than a wide sweep.
hands close to your body as you turn.
Don't cast
Don't push your hands away from your body early. That is casting: the hands drift out, the barrel comes around the ball, and the swing gets long.
the turn pulls the hands through, the arms don't throw the bat out.
Keep your back shoulder from dropping as you swing. A dipping shoulder sends the barrel under the ball and makes the path loop.
back shoulder stays up until the hips have turned.
Stay in line with the pitch
Swing level through the hitting zone. In physics terms, a level swing means the bat travels along the same line as the pitch. Pitches come in on a downward angle, so that line tilts slightly up from the ground.
the barrel moving along the ball's line, not crossing it.
Know the trade-off before you change your plane. In one physics model (fixed 70 mph bat speed, 86 mph fastball descending about 6°), an attack angle near 10° gave the best chance of a hit, about 24° gave the best home-run chance, and the steeper swing was far less forgiving if your timing was a few milliseconds off.
no feel cue; this is a goal to set with your coach.
Let the contact point move with the pitch: farther out front for high and inside balls, deeper for low and outside ones. Your path changes with location, so don't groove one swing for every pitch.
meet the inside pitch early, let the outside one travel.
Expect a small timing window. In collegiate hitters it averaged about 9 ms and ranged from about 2.5 to 30 ms depending on the swing, and no single swing feature explained it. Staying in line with the pitch is one part, not the whole answer.
no feel cue; this is why reps against live timing matter.
Feel it
Short and quick to the ball. Hands back during the stride, then close to your body as the hips and shoulders turn. Back shoulder stays up, no loop. The barrel moves along the pitch's line through the zone, not chopping across it or scooping up under it. The app reads your hands and body, not the bat, so it can flag hands drifting away from your body or dropping early, but it estimates rather than measures your bat angle.
Fix-its
- You cast the hands Your hands get too far from your body and the barrel comes around the ball. Keep the hands between the ball and your body and let the hips start the swing. Do the two-tee drill and stop-and-hold reps.
- Your swing loops Check your grip first: line up the door-knocking knuckles so your arms stay inside your frame. Then work the two-tee drill until you can miss the back tee every rep.
- Your back shoulder drops The barrel dips under the ball. Set a second tee behind the first, 6 inches higher, and swing without touching it.
- Your path is far steeper than the pitch A big uppercut gives you very little timing room. Work back toward a path that matches the pitch through the zone, then add lift only as a goal you set with a coach.
- You hit every pitch at the same spot Move the tee: inside and high balls out front, outside and low balls deeper. Your path has to change with location.
Drill
- Stop-and-hold: tee slightly below your belt, ball slightly ahead of your body. Swing at normal speed, stop just before contact, hold 1 second (arms extended, hips open, eyes on the contact point), then finish. 10 reps.
- Two-tee path drill: set a second tee directly behind the first, 6 inches higher. Repeat the stop-and-hold swing without touching the back tee and make solid contact on the front ball. 10 reps.
- Location tee work: move the tee inside, outside, high and low. Hit each location until you can feel the contact point move forward for inside and high, back for outside and low.
- Film it: phone face-on (across the plate, facing your chest) and from the side, full body in frame, at 120 to 240 fps. Check that your hands stay back during the stride and close to your body on the way to contact.
By position
No source we found ties swing plane to a fielding position. What changes the target is the hitter's goal: in Nathan's model a path close to the pitch's line favours getting on base and a steeper one favours home runs at a cost in timing margin. The hand-path basics here apply to every hitter.
Sources
- Baseball Canada — Hitting Fundamentals
- Little League University — Backyard Tip: Gripping a Bat for Baseball or Softball
- Little League University — Backyard Tip: Using a Tee to Improve the Swing Path
- Professional Baseball Instruction (J. Monaghan) — PBI Pro Tips #5: Keeping Your Hands Inside the Ball (2016)
- Nathan AM — Optimizing the Swing (Univ. of Illinois physics of baseball page)
- Nathan AM — Optimizing the Swing, Part Deux: Paying Homage to Teddy Ballgame, The Hardball Times (2015)
- Nakashima H et al. — Acceptable range of timing error at bat-ball impact in baseball depends on the bat swing path, Front Sports Act Living (2025), abstract via Europe PMC
- Katsumata H et al. — Coordination of hitting movement revealed in baseball tee-batting, J Sports Sci (2017), abstract via Europe PMC
- Welch CM et al. — Hitting a baseball: a biomechanical description, JOSPT (1995), abstract via Europe PMC
Last checked 2026-10-26.