It is often said the reason many people love sport is that you never know what will happen until the final whistle sounds.
We love the David v Goliath matches and it is always satisfying when a minnow upsets one of the big teams (unless, of course, that big team is your team).
A couple of Englishmen in our office have been walking around with pretty long faces after their team's embarrassing 2- 1 loss to tiny Iceland in the knockout stages of the European Cup football tournament.
I know how they feel - being from South Africa, I took a verbal bashing last year when Japan upset the Springboks in the pool stages of the Rugby World Cup.
But it is the unpredictability of sport that makes it so exciting. Anyone or team on their day can be triumphant.