Your arm swing is the engine of your bowling delivery. When it works correctly, it feels effortless — the ball flows like a pendulum, your timing aligns naturally, and the release happens almost on its own. When something goes wrong, every other part of your game suffers. This guide identifies the five most common arm swing errors, explains exactly what causes each one, and gives you a practical drill to eliminate it.
Before diving in, make sure your approach footwork is solid. Many arm swing problems are actually footwork problems in disguise.
1. Muscling the Ball (Death Grip)
What It Looks Like
You squeeze the ball tightly throughout the entire swing. Your forearm and shoulder are visibly tense. The swing looks forced and mechanical rather than smooth and pendulum-like. The ball path is unpredictable — sometimes it goes left, sometimes right, and the release feels different every time.
Why It Happens
Fear of dropping the ball is the number one cause. Bowlers who are new to the sport, or who have recently moved to a heavier ball, instinctively tighten their grip to feel secure. A second cause is the wrong grip fit — if your thumb hole is too large, your hand compensates by squeezing. A third cause is anxiety: tournament pressure or lane conditions you are not comfortable with will tighten your grip without you realising it.
Drill to Fix It
The Towel Drill. Fold a small towel or cloth and hold it in your bowling hand. Practice your full approach and swing while holding the towel — you physically cannot squeeze it tight enough to muscle the ball. Do ten slow-motion swings with the towel, then immediately pick up the ball and bowl one frame. You will feel the difference instantly. Repeat at the start of every practice session until a relaxed grip becomes your default.
2. Chicken Wing (Elbow Flaring Out)
What It Looks Like
During the forward swing, your elbow wings out to the side away from your body. Instead of the ball traveling in a straight line toward the target, it arcs inward and then corrects outward at the release point. You frequently hit the left side of the head pin (for right-handers) or your ball crosses over to the wrong side of the pocket. Your release looks inconsistent even when you think you are doing the same thing every time.
Why It Happens
The chicken wing usually develops when bowlers try to generate extra hook by manipulating the wrist or fingers early in the swing. The elbow flares as compensation. It also appears when the grip is too tight (see error 1) — a tense hand causes the entire arm to move unnaturally. Bowlers with a very wide backswing sometimes develop this as the arm compensates on the way down.
Drill to Fix It
The Wall Drill. Stand sideways next to a wall with your bowling shoulder about 15 cm away from the surface. Swing the ball slowly in your pendulum motion. If your elbow wings out, it will touch the wall — instant feedback. Do twenty slow swings without touching the wall. Then move to the approach and bowl three frames, focusing entirely on keeping the elbow tucked. Use video analysis to confirm your elbow stays in line.
3. Late or Early Timing
What It Looks Like
With late timing, your feet arrive at the foul line before the ball does. You feel rushed, your body lurches forward, and you have to force the release. The ball often ends up on the wrong side of your intended target line. With early timing, the ball is too far forward in the swing before your feet have planted. You lose leverage and your shots feel weak and floaty. Both errors produce wildly inconsistent results.
Why It Happens
Late timing usually comes from starting the ball push-away too late — the first step begins but the ball stays at your side for too long. It also happens when you rush your footwork, especially on the last two steps. Early timing happens when the ball push-away is too aggressive and too early, sending the ball far ahead of the feet. Bowlers who are trying to generate more speed often create early timing without realising it.
Drill to Fix It
The Step-Stop Drill. Walk through your approach in very slow motion, stopping completely after each step and checking where the ball is in the swing. Step 1: ball should begin moving away from your body. Step 2: ball is at the bottom of the push-away, beginning the backswing. Step 3: ball is at peak backswing. Step 4 (slide step): ball is descending into the release zone as your foot plants. If the ball and foot are not synchronised at each checkpoint, slow everything down and repeat until they are. Combine with your approach mechanics work.
4. Backswing Too High or Too Low
What It Looks Like
With a backswing that is too high (above shoulder level), you lose control of the ball, your timing becomes inconsistent, and you often pull the ball across your body on the way down. Shots fly left unpredictably (for right-handers). With a backswing that is too low (below hip level), you generate insufficient ball speed and rev rate, and your ball often ends up in the oil track without enough energy to carry the back pins.
Why It Happens
An excessively high backswing is usually caused by muscling the ball upward with the shoulder instead of letting gravity and momentum carry it naturally. Bowlers who want more speed often force the backswing higher. A low backswing is typically caused by a tight, controlled push-away that never lets the ball get momentum, or by gripping the ball so tightly that the natural swing arc is suppressed.
Drill to Fix It
The Gravity Swing Drill. Stand at the foul line (do not bowl). Hold the ball at waist height with a relaxed grip and simply let it swing freely — forward, back, forward, back — like a pendulum. Do not assist the swing in any direction. After ten repetitions, note the natural apex of your backswing: this is your correct backswing height. It should be roughly between hip and shoulder level. Now replicate this feel during your full approach. If you use a wrist support device, ensure it is not restricting your natural swing arc.
5. Side-Arming
What It Looks Like
Instead of swinging the ball straight back and straight forward in a vertical plane, you swing the ball out to the side, away from your body, on either the backswing or the forward swing. The ball path from your hand to the lane is a wide, sweeping arc rather than a straight line. Your shots frequently miss to the outside of your target, and you struggle to hit the same board consistently. Your release produces excessive side roll and the ball hooks unpredictably.
Why It Happens
Side-arming often starts with a push-away that goes out to the side instead of straight forward. Once the ball is off to the side in the backswing, the only way to get it back to the target is to swing it back across the body — and that lateral motion carries all the way through to the release. It also appears when bowlers try to wrap their hand around the ball for more hook, which pulls the entire arm off the correct swing plane.
Drill to Fix It
The Straight-Line Tape Drill. Place a strip of tape on the floor from behind the approach all the way to the foul line, aligned with the boards you intend to walk. During your practice swings (no ball first), ensure your arm swings directly above this line. Then bowl with the ball, keeping the swing on the same vertical plane as the tape line on the floor. Use video analysis filmed from directly behind you to see whether your swing plane is truly straight.
Putting It All Together
The five errors above are interconnected. Muscling the ball causes the chicken wing. The chicken wing disrupts timing. Disrupted timing leads to compensations in backswing height. And all of these together produce side-arming as your body tries to save the shot at the last moment.
Fix them in order: start with grip tension, then elbow position, then timing. Once those three are clean, backswing height and swing plane will often correct themselves.
Film every practice session and review your footage between games. A side-on camera angle shows timing and backswing height. A rear-facing angle shows elbow and swing plane. For a complete framework on using video to improve your technique, see our guide on video analysis.
Consistent practice with focused, deliberate correction of one error at a time will produce permanent improvements far faster than bowling more frames with no awareness of what is going wrong.