Duncan Alexander is the co-founder of the OptaJoe Twitter account, one of Britain's top football statisticians and commentators who has almost 1m followers. He live tweets during games with his trademark blend of incisive analysis and droll humour. He works for Perform, one of the world's leading digital sports content and media companies.
His first book, OptaJoe's Football Yearbook was published in 2016.
Follow Duncan on Twitter @OptaJoe and @oilysailor.