Ok, I will be very basic and not refined here, but this comes from first hand experience. A few weeks ago I was a lot more than in a foul mood, I was so depressed I couldn't stop crying. I tried everything, but only one thing did the trick: Southpark. I had to laugh. Though I know it by heart. It was a compulsion which won even over the compulsion to cry my head off. Some kind of a miracle, I strongly recommend it.
I have to agree that music can be very helpful. I'm an extremely emotional person, and I adore Brahms, but I've learnt this one thing: when sad, never listen to Brahms! Rather listen to something with a lot of rhythm (personally: Shooglenifty) and very happy.
I've never been upset because of a sport event, so I'm not sure i can totally empathize. I've been upset because the film had no happy ending, though, which is similar in the way that I'm not personally concerned with this event, but it still affects my emotionality. In this case (well, in every case actually) my other recommendation is good dark chocolate. It is chemical but it's not too dangerous. It helps. It's not as strong as Southpark, but when the bad mood is not too serious, it can help to see things from a different perspective: that of a person who has many things to enjoy in life.