In my models I use different type of classifications for both teams and leagues. One interesting way to look at leagues are how interesting they seem to be to Betfair costumers. One way to check this is by calculating the average matched sum per event and match.
The average is calculated from 2015 and 2016 data, and the top 25 leagues/events are:
The average matched is in SEK. The Premier League stands out as the number one preferred betting markets with an average matched 44.5 MSEK per match on the Match Odds market. That is more than twice the amount in Primera Division and four times Serie A!
The Community Shield is the match between Arsenal and Chelsea held on 2.august 2015 (won by Arsenal with 1-0 by the way).
Especially the Scandinavian markets are interesting for me, and the top3 there are: