News flash: that's false.
It's easy to pinpoint one call in a game that is the turning point and can decide the outcome of a contest. But when we do that, we are no longer admiring the proverbial forest for the trees. We delineate an entire competition down to one moment, which makes for fantastic drama, but seldom represents reality. (In fact, maybe Hollywood could learn another lesson on how to not poison us moving forward...)
Anytime there is a close call in the later stages of a game, an official has to make a split second decision, which will usually please half of the people present and upset the other half. It's not a situation that is enviable by most, including the official. After all, it's not like the official could have avoided trouble if he or she had made the opposite call: the roles would just be reversed with the upset half now happy and the happy half now upset.
But what happens when replays show us a blown call that can't be changed? Or what happens when a coach or parent (or even player) sees it one way and the official sees it differently? The common conclusion is that the official was clearly wrong and is the sole culprit for the outcome of the contest. However, the truth is the exact opposite.
During the course of any sporting event, a multitude of action will occur that can alter the balance of power defined as who is "winning." Baseball changes with each pitch. Football changes with each play from scrimmage. Tennis changes with each serve. The list goes on. Seldom does anyone realize that every single one of these actions can affect the course of a game an equal or greater amount than the call of one official at a moment that is slightly highlighted. In short, every time a coach tells me the one call I made cost his team the game, I remind myself that the team had ample opportunities to prevent me from even having to make that call. Although I take responsibility for the call, I'm not the reason that team lost.
Further, there's an even greater notion at stake that people fail to recall in these situations: great teams overcome bad calls.
The teams that win are the ones that don't stop to argue about the bad calls. The teams that win are the ones that shrug them off and overcome them to the point where the bad call didn't matter.
When a marathon runner trips during the marathon, does he or she stop to examine the spot where he or she fell? Does the runner complain to anyone and everyone about how it is the fault of the ground for causing the runner to lose time? No! The runner gets up and hurries along to make up for the lost time!
The same goes for great teams and great athletes.