4 & 5 Lock/Second Row: The second row forwards (also known as locks) are the engine room of the scrum and the target men in the lineout, meaning that they need to be tall, powerful players with excellent scrummaging technique and pinpoint timing. If they bind to each other and the props too loosely in the scrum their pack will lose power, and if they are not accurate and dynamic with their lineout jumping, it offers the opposition forwards a chance to steal possession. In open play the second row’s duties have evolved from being support players at rucks and mauls to ball carriers.
Scrum prep
https://www.youtube.com/watch?v=ELti2JJflGc&list=PLlVHk7i1__EHUlV8zPsB3MOakFbS3Yj4r&index=6&t=52s
Offloads
https://www.youtube.com/watch?v=YXEQSiQbdCs&t=19s
Power Tackle
https://www.youtube.com/watch?v=Fsn0KNKZ4_M&list=PLlVHk7i1__EHUlV8zPsB3MOakFbS3Yj4r&index=3&t=13s
https://www.youtube.com/watch?v=dRw8tZAAD7I&list=PLlVHk7i1__EHUlV8zPsB3MOakFbS3Yj4r&index=8&t=5s
https://www.youtube.com/watch?v=exMTrfMsTno
Passing
https://www.youtube.com/watch?v=SiGE7z1OnJQ
Players to youtube
4 & 5 – Eben Etzebeth, Maro Itoje, Jamie Cudmore