And yet...when it comes to professional sports, the difference between winning and losing is really small in any game. The talent level is so high that the smallest advantage is enough to put one team over another. It might make me feel better to say "eh, the Pirates just made one mistake too many..." but that's the whole point!! The entire premise of sports is that one team makes fewer mistakes than the other.
Thankfully for the rest of us, most of life isn't like that. In a general non-competitive sense, we have a built in "screw up" buffer when it comes to getting through the rest of the day. Maybe that's why sports appeal to so many people: we vicariously live through athletes as they "out-perfect" each other. By choosing the "correct" side, we can feel like we were a part of the magic.