belt (something) out of the park

To do or perform something extraordinarily well; to produce or earn an exceptional achievement. An allusion to a baseball that is hit hard enough to land outside the stadium. Great job on that report, Jacobs—you really belted it out of the park! I had expected to belt that test out of the park, but I barely scraped by with a D. I was skeptical when I heard the premise, but the director really managed to belt that film out of the park.