Rory MacDonald on surviving double underhooks: down-block, hips back, whip the head across and pummel back to your own underhook. BJJ Fanatics clip.
Defence
Clinch Defence
Breaking grips, recovering underhooks and getting back to a neutral distance.
Clinch · Standing
Techniques in this topic
Resources
4 resources
YouTube videos
No-gi Intermediate
No-gi Intermediate
MMA-flavoured look at the defensive whizzer, framing the face and steering an opponent off the wall before hiking the underhook back. Useful for the clinch even without a cage.
How to hand fight for #wrestling and #BJJ - Clearing Collar Ties #wrestlingtakedowns #judolife 
Systematic Wrestling YouTube
Four ways to clear a collar tie - elbow pass, rip, thumb post and taking the underhook - so you can get to the legs. Short and dense, aimed at no-gi and wrestling.
No-gi Intermediate
Defending a single leg with the sprawl and whizzer, then attacking the wrist and folding the head to reach a front headlock. Clear wrestling fundamentals that transfer directly to no-gi.