Completed an alley-oop

DUNKED

Think of a basketball move where the ball is slammed through the hoop with force.

"Completed an alley-oop" refers to finishing a basketball play where one player throws the ball near the hoop and another jumps to score. The answer "DUNKED" fits because dunking is a common way to complete an alley-oop, slamming the ball through the hoop. The clue plays on basketball terminology, assuming familiarity with the sport's moves.