Causes of tackles with incorrect head positioning (n=317)
| Intentional | 13.9% |
| Habitual side for tackling | 6.6% |
| To protect tackler’s injured shoulder | 0.3% |
| The ball carrier does not stop. | 6.9% |
| Unintentional | 73.5% |
| Accidental | 38.5% |
| The ball carrier directly faces the tackler. | 14.8% |
| The ball carrier changes direction. | 11.0% |
| Distance required for tackling is misjudged. | 9.1% |
| None of the above/other reasons | 12.6% |