# Who will win the World Cup and which prediction model?

June 17, 2014
By

(This article was first published on mages' blog, and kindly contributed to R-bloggers)

The World Cup has finally kicked off last Thursday and I have seen some fantastic games already. Perhaps the Netherlands appears to be the strongest side so far, following their 5-1 victory over Spain.

To me the question is not only which country will win the World Cup, but also which prediction model will come closest to the actual results. Here I present three teams, FiveThirtyEight, a polling aggregation website, Groll & Schauberger, two academics from Munich and finally Lloyd's of London, the insurance market.

The guys around Nate Silver at FiveThirtyEight have used the ESPN’s Soccer Power Index to predict the outcomes of games and continue to update their model. Brazil is their clear favourite.

Andreas Groll & Gunther Schauberger from the LMU Munich developed a model, which like the approach from FiveThirtyEight aims to estimate the probability of a team winning the world cup. But unlike FiveThirtyEight, they see Germany to take the trophy home.

Lloyd's chose a different approach for predicting the World Cup final. The insurance market looked at the risk aspect of the teams and ranked the teams by their insured value. Arguably the better a team the higher their insured value. As a result Lloyd's predicts Germany to win the World Cup.

Quick reminder; what's the difference between insurance and gambling? Gambling introduces risk, where none exists. Insurance mitigates risk, where risk exists.

Here are the three rankings combined in one table. None of the three predictions have put the Netherlands into the top 5, despite the fact that they played against Spain in the final four years ago. Interestingly, as of this morning the bookmakers favourites are Brazil, Argentina, Germany and the Netherlands with implied probabilities of about 25%, 20%, 18% and 7% respectively.

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