Shoulder charge - Arm of the shoulder making contact with the ball carrier is behind the tackler's body or tucked in a 'sling' position at contact.

High tackle - An illegal tackle causing head contact, where the head contact is identified by clear, direct contact to the ball carriers head/neck OR the head visibly moves backwards from the contact point OR the ball carrier requires a HIA.

Likewise, if you do not wrap your arms around the ball carrier, and lead with your shoulder, then that too is illegal and you must face the consequences.

"Billy is a damaging ball carrier," said Bears captain Steve Luatua.

Another difference is that in rugby, when a ball carrier is tackled, play doesn't stop; instead, the ball carrier must release the ball, the tackler must release the ball carrier, and both need to get out of the way for play to continue."

McInnes said: "I spoke to Gary about trying to replicate his Hibs performance - carrying a threat, being a ball carrier, a goal threat and getting us up the pitch.

The distance of defence was significantly associated with the number of passes, type of pass, running speed, and running angle of the ball carrier. Pick and go's (25%), 1 pass (25%) or 2 passes (36%) in the final phase resulted in line breaks when the defensive distance was close at ball reception.

In rugby union, a tackle occurs 'when a ball carrier (attacking player) is held by one or more opponents and is brought to ground'.

"He is a strong, young No8 and big ball carrier who will add both talent and depth to our squad as we look to next year and beyond."

Down by two points on Oregon's 12, with less than two minutes for victory, have your ball carrier kneel on the 1-yard line.

BMR's leading ball carrier is John Savoie, who has picked up 405 yards on 85 carries and scored four touchdowns.

The study found that people who are blindfolded employ the same strategy to intercept a running ball carrier as people who can see, which suggests that multiple areas of the brain cooperate to accomplish the task.