Our Warcraft 3 Elo ranking is based on Whole-History Rating (WHR) by Rémi Coulum. The ranking is automatically updated once a week. Player who haven't been active in the last three months are not included. Delta values are based on the elo changes for a player within the last 30 days.
This ranking was developed in cooperation with Turbosau. You can check out his Elo Ranking which uses a different algorithm here.