Bouncer

A short-pitched delivery that rises to chest or head height (Marshall, Lillee, Bumrah, Archer, Mitchell Johnson).

'Bouncer' is simply descriptive — a short ball that bounces up sharply toward the batter's head or chest.

The short-pitched bouncer has been law-limited since 1991 (Law 41.6 — a maximum of two per over above shoulder height); the 1932/33 Bodyline series is its most infamous chapter.

Intermediate — accessible technique with a steep accuracy curve in match conditions.

Pitched 7–9 m from the batter, released at +3–4° above horizontal so it clears the chest after one bounce.

Two bouncers per over are allowed in men's Test cricket (under Law 41.6 of the Laws of Cricket); used to set up the full ball and unsettle hook/pull batters.

Bouncing too short — anything that goes through above head height is a wide; calibrate length on the day-one pitch.

Concussion remains the most-tracked injury; helmet standards (BS 7928:2013) are mandatory in international cricket post-2014.