Close-Quarters Fighting
General - REQ: Base Attack bonus 3+
When an enemy attempts to grapple you any damage you inflict with a successful attack of opportunity provoked by the grapple attempt is added to your ensuing grapple check to avoid being grappled. Further, you are entitled to make an attack of opportunity even if the attacking creature has the improved grab ability. This feat does not provide you with addition attacks of opportunity in a round, so if you don?t have an attack of opportunity available when your enemy attempts to grapple you you don?t get the benefit from close-quarters fighting. Sword and Fist, pg 5.
General - REQ: Base Attack bonus 3+
When an enemy attempts to grapple you any damage you inflict with a successful attack of opportunity provoked by the grapple attempt is added to your ensuing grapple check to avoid being grappled. Further, you are entitled to make an attack of opportunity even if the attacking creature has the improved grab ability. This feat does not provide you with addition attacks of opportunity in a round, so if you don?t have an attack of opportunity available when your enemy attempts to grapple you you don?t get the benefit from close-quarters fighting. Sword and Fist, pg 5.