Watch: Pitcher flips off hitter mid-windup, then strikes him out

Flipping a hitter off in the middle of one's windup doesn't have an adverse affect on a pitcher's stuff, apparently.

That much became clear in this unsourced video that surfaced Tuesday, in which a pitcher - playing in what's purportedly a Mexican League game - interrupts his windup to give the opposing hitter the middle finger before striking him out seconds later.

The anonymous pitcher then stares down the hitter he so thoroughly owned as he makes his way off the field.

Savage.