For 20 years, Joseph Buchdahl has worked as a betting analyst, providing historical sports data and betting odds through his websites Football-Data.co.uk and Tennis-Data.co.uk. He is the author of Fixed Odds Sports Betting, How to Find a Black Cat in a Coal Cellar, Squares & Sharps, Suckers and Sharks and Monte Carlo or Bust published by High Stakes Publishing, and has been a regular contributor for the online sportsbook Pinnacle, with over 60 betting-related articles. He continues to tweet regularly via 12Xpert.