Your 4-3 Defense Linebacker Reads are critical to your run stopping defense. Here’s how to get the job done. The Miami 4-3 Defense has proved itself time and again to adapt to every change that offenses have thrown at it in the last 30+ years. At the core is a sound, aggressive defense that can play fast. This episode of The Football Coaching Podcast looks at the Linebacker Reads for the 4-3 Defense System. We’ll talk about the options you have, the thought process I’ve been through over the last decade in testing different options, and how to coach the most effective Linebacker Reads I’ve learned for the 4-3 Defense.