Scrum descriptors and definitions
| Descriptor | Definitions |
| Scrum28 | A scrum is formed in the field of play when eight players from each team, bound together in three rows for each team, engage with their opponents so that the heads of the front rows are interlocked. Scrum engagement occurs when the front-row of each team make contact with each other. |
| Frequency of scrum | Count of scrum events during match play. |
| Frequency of engagement attempts | Count of engagements and re-engagements (resets) before the scrum was considered contestable. |
| Duration of (re-)engagement (reset) | The time (in minutes:seconds) from the engagement to when the whistle is blown to reset the scrum. |
| Duration of contestable scrum | The time (in minutes:seconds) from the engagement to when the ball is played. |
| Scrum outcomes | |
| Scrum result (for complete scrums) |
Attacking team retains the ball: attacking team maintains possession of the ball after the scrum contest. Defending team gains the ball: attacking team fails to maintain possession of the ball after the scrum contest. |
| Infringements | Penalty awarded against attacking team. Penalty awarded against defending team. Free-kick awarded against attacking team. Free-kick awarded against defending team. Penalty type28 . Popping: intentionally lifting an opponent off their feet or forcing them upwards out of the scrum. Collapsing: deliberately collapsing a scrum. Falling: deliberately falling or kneeling. Pulling: pulling an opponent. Intentional wheeling: deliberately wheeling the scrum. |
| Injury | See injury in table 1. |
| Injured player | See injured player in table 2. |
| Injury location | See injury location in table 1. |