8. Opta - @OptaJoe - 434,307 followers
The Opta group are my favourite Twitter statistic account and they provide in depth stats that I would have to trawl through the web to find myself. They are a godsend when trying to compile an article based on things such as a player's value to a team. @OptaJoe provides statistics on British football, and other accounts, including @OptaJose and @OptaJim provide stats from the Spanish game and Cricket respectively. Opta is especially good for articles in which you are required to compare and contrast statistics to both support and contradict arguments. The stats they provide, sometimes during games, are incredibly accurate and can therefore be relied on with absolute certainty regarding their validity.