Here are some Basic, Fundamental, and Deep Half Guard Escapes when your opponent has your back in Brazilian Jiu Jitsu. For most people, having an opponent behind them is the most dangerous position in combat sports. Here are some simple and very effective ways of escaping this position. The seated position is a common position in ground fighting but also represents a lot of variations of back control. These escapes can all be modified for laying down, turtled, and even versions of back control while we are standing or against a cage wall.