cheap shot

If the referee issues a two-minute or five-minute penalty for a cheap shot or a hit to the head, and the other team’s players don’t think that it’s enough, they’ll settle it.

Does making fun of a large bandage on a forehead count as a political cheap shot?

First, the cheap shot threats that might have intimidated other victims and their lawyers don't faze me.

If you try it, it usually gets penciled or frowned out of existence by one editor or another as a cheap shot.

"More likely on the gun," said Jean, for we had included a cheap shot-gun among the articles considered indispensable.