The scrum has been under focus this year as the changes in engagement have meant a different approach, with both advantages and benefits for certain teams. The hookers now have to hook, which is a new concept for some of them.
Lawrence Dallaglio and Martin Bayfield investigate on BT Sport's Rugby Tonight show with the help of former Wales and current Exeter Chiefs prop, Craig Mitchell, and hooker Luke-Cowan Dickie.
Through the help of the in studio guests and some video clips, this demonstration should give you a better idea of how things are working inside the coalface under the new scrum interpretations.
Why is it going right for some and wrong for others? This should explain some of it.