Cricket Bowling Action Types — Complete Guide

Walk into any cricket academy in India and you'll hear coaches use terms like "side-on," "chest-on," and "mixed action." These aren't just descriptive labels — they're fundamentally different mechanical configurations with different speed potentials, different injury risks, and different optimal coaching approaches. If you don't know what type of action you have, you can't coach yourself properly.

The Three Action Types Explained

Side-On Action

In a pure side-on action, both the hips and shoulders are aligned sideways to the batsman at the point of back-foot landing. Imagine looking at the bowler from the side — you'd see their left shoulder (for a right-arm bowler) pointing directly down the pitch, with their body forming a profile view.

Mechanical profile: Side-on actions generate swing and seam movement most naturally, as the body position allows the ball to travel in a more classical trajectory. Hip-to-shoulder rotation through the delivery is full and smooth, without counter-rotation stress on the lower back.

Examples: Jimmy Anderson, early-career Glenn McGrath. Classical action — technically lower injury risk, excellent for seam movement.

Limitation: Can generate slightly less raw pace than chest-on actions for some bowlers, as the hip-to-shoulder rotation drives pace rather than arm speed alone.

Chest-On Action

In a chest-on action, both hips and shoulders are facing the batsman at back-foot landing — the bowler's chest is pointing toward the batter. This action is less classical but produces exceptional pace for some bowlers.

Mechanical profile: With the body already open, pace comes primarily from arm speed and a powerful wrist snap. The lack of hip-to-shoulder rotation is compensated by extreme arm velocity. The release angle is typically more front-on, making it harder to generate traditional seam movement but easier to generate skiddy, angled deliveries.

Examples: Jasprit Bumrah (extreme chest-on). A genuinely effective action when hip and shoulder positions are aligned consistently.

Injury risk: Chest-on actions properly executed are not inherently higher risk than side-on. The risk emerges when the action becomes mixed.

Mixed Action (the problematic one)

A mixed action occurs when the hips and shoulders are in different orientations at back-foot landing — for example, hips side-on but shoulders chest-on, or vice versa. This misalignment means the lower back must counter-rotate to reconcile the two positions during the delivery stride.

Why it's dangerous: This counter-rotation through the lumbar spine is the primary mechanical cause of stress fractures in fast bowlers. The lower back is not designed for repetitive extreme rotation under high compressive load. Thousands of deliveries with a mixed action creates cumulative micro-damage to the vertebrae.

ICC classification: At international and high-level domestic cricket, bowlers with mixed actions are identified and coached — either toward pure side-on or pure chest-on — to reduce injury risk.

Coach Arjun Says

"You cannot identify a mixed action reliably by watching yourself in a mirror or from in front. You need a side-on video. The hip and shoulder misalignment only shows up clearly from the side angle. This is the single most important reason to film your bowling action."

How to Identify Your Action Type

You need a side-on video of your bowling — specifically at the moment of back-foot landing. Here's what to look for:

1. Film from directly side-on (90 degrees to the crease) at hip height.
2. Pause the video at the frame where your back foot lands.
3. Draw a mental line through your hips (from front hip to back hip). Is it pointing sideways (side-on) or toward the batsman (chest-on)?
4. Draw a mental line through your shoulders. Is it the same orientation as your hips? If yes: pure side-on or pure chest-on. If different: mixed action.

Can You Change Your Action Type?

Yes, but it takes time — typically one full off-season of focused work, minimum. The action type is deeply ingrained in muscle memory from years of bowling. Changing it requires conscious, slow-motion drilling of the new position, starting from walk-up deliveries and gradually adding pace.

The priority order for correction:

1. Fix hip alignment at back-foot landing first (this is the harder of the two positions to change)
2. Bring shoulder alignment into line with the new hip position
3. Bowl at reduced pace (60-70%) until the new positions feel natural
4. Gradually increase pace while monitoring the position with regular video analysis

Do not try to bowl at full pace while changing your action type. The old muscle memory will dominate under pressure and you'll revert — often to a worse version of the mixed action than you started with.

Final Word

Every fast bowler should know their action type. It's not a label — it's information about how your body is working and what your injury risk profile looks like. If you don't know yours, film yourself from the side and find out today.