Learn how to defend against strikes using this technique flow by Matt Bryers.
The combat flow teaches you how to elbow smash and enter to attack the body, and then slip under to get the Rear Naked Choke using Jiu-Jitsu Concepts.
This flow is applicable to MMA and Self-Defense, but it truly is meant for reality based self defense when you have an aggressive attacker making lunging punches.
Though in MMA, this technique is very good for wrestlers who are good a timing punches, and slipping underneath to get the double leg takedown.
The key component of this technique is learning to create angles with your footwork to elbow your attacker, and turn the corner for back control and finish with the rear naked choke.