Breaking down your defense into smaller parts is an effective way to train your players and help them to develop the instincts and habits that are necessary for a championship level defense, In the video below West Chester University Head Women’s Soccer Coach and 3x PSAC Tournament Champions, Betty Ann Kempf-Townsley, demonstrates and discusses the basic principles of 2v2 defensive play and emphasizes the necessity of keeping the ball out of the center of the field.
The drill is one of a progression of drills that she utilizes. For more information about those defensive drills click the link Techniques and Tactics for Transition Defending
The YouTube video has sound, so please make sure that your sound is turned on and that you have access to the site (many schools block access to youtube)