Wherever there’s talk of sports, sparks are sure to fly whenever the topic turns to “the best ever” in any given sport or competitive event. Such arguments mostly focus on cold, hard statistics. But intangibles—heart, character, an ability to deliver in the clutch and overall impact—must factor into any serious discussion. Here, we’ve prepared our list of all-time game-changers. Your own list may be different but we stand by our picks and challenge you to agree, disagree, argue and add to the list. Let the games begin!