It's not everyday that you get a massive upset before an event has formally begun. But that is exactly what we got with the men's Olympic soccer tournament as Japan shocked Spain 1-0 the day before the Opening Ceremony even took place.
Of course, it is necessary to put a bit of an asterisk next to that result as it was Spain's under-23 Olympic team that took the fall and not Spain's fully loaded national team. You know, the one that won the 2010 World Cup and then followed that up with a Euro 2012 title.
Nevertheless, there is no way to deny that Japan's win over Spain was a bona fide stunner and changed the landscape of the entire tournament.
The real question now is this: Was Japan's win the beginning of the upsets in the group stage of the 2012 men's Olympic soccer tournament—or was it the end?
I believe there are a few more upsets just waiting to happen in the group stage.
No, it might not resemble March Madness, but all soccer/football fans should keep their eyes open as the ride might get a bit more wild over the next week.
Let's take a closer look at the four groups and see where additional upsets might be had.