Tackler impedes/stops ball carrier using the upper limb(s)
Tackler deliberately impedes/stops the ball carrier without using the arm(s)
Tackler holds the ball carrier’s jersey
Tackler raises the ball carrier’s hips above the ball carrier’s head
Tackler impedes/stops the ball carrier with his/her shoulder as the first point of contact followed by use of the arm(s)
Tackler uses the chest and wraps both arms around the ball carrier
Tackler trips the ball carrier with his/her hand on the lower limb below the knee
Information taken from: Fuller et al. Injury risks associated with tackling in rugby union.
British Journal of Sports Medicine
2010; 44: 159-167.