land a blow
1. To be successful in one's attempt to punch someone (as opposed to trying to punch and missing). The returning champion knocked his opponent out before he could land a single blow.
2. By extension, to successfully make a point that proves or supports one's argument. During the debate, she landed a number of blows by hammering on her opponent's questionable connections to offshore tax havens.
land a punch
1. To be successful in one's attempt to punch someone (as opposed to trying to punch and missing). The returning champion knocked his opponent out before he could land a single punch.
2. By extension, to successfully make a point that proves or supports one's argument. During the debate, she landed a number of punches by hammering on her opponent's questionable connections to offshore tax havens.