The Castrol Rankings uses the latest technology to objectively analyse and rank player performance.

Infostrada Sports is a worldwide provider of sports statistics and information services. Also by Infostrada: @EuroClubIndex, @Infostrada2012 & @NLVoetbalLive.

1 – Fu?ballfakten – der offizielle Tweet von Opta Deutschland. Erleuchtend. (Tweets also in English language).

1 – La page football officielle d’Opta. Illuminant. (also in English)

1 – The official Twitter page for Opta Sports’ football coverage. Illuminating.

1 – P

Purveyor of Arsenal facts – some mine, some courtesy of the day job. Mentor to OptaJoe & colleagues. Views are my own.

John is the longest serving sports writer at Telegraph Media, entering his 25th year covering football. And he loves his stats…