Jeon shows one of the best ways to deal with an opponent who likes a strong grip over the back is by pinning the sleeve and cross gripping. This is for a right v right or left v left gripping situation
Jeon demonstrates his tactical gripping and how he used it do dominate contests
Jeon demonstrates his preferred left handed grip against right handed opponents. This is also applicable right v left
Jeon demonstrates how to deal with a high left lapel grip. This double grip break is Illegal in current IJF rules