Clinch

You gain proficiency in the Athletics skill. If you are already proficient in this skill, you instead have expertise, doubling your proficiency bonus to any roll made with it.

As a reaction, you can force a contested Athletics check when you are hit by a melee attack. If you succeed the attack misses you, and your attacker is now grappled and cannot attack with that weapon/limb until they are ungrappled. If you fail, your attacker can follow through with their melee attack against your or they can choose to grapple you instead.