Ladder implements the Elo rating system for any heads-up (singles) or pair (doubles) games, such as pool, table tennis, or chess!The Elo rating system not only helps pair up players of similar skill, but also allows “mismatched” players to share a game without worrying about fairness. Lower ranked players risk less Elo when playing experts. Similarly, champs are dissuaded from “farming” points from easier matches.See more about Elo on Wikipedia: https://en.wikipedia.org/wiki/Elo_rating_system See your rating and how you match up against your coworkers or friends.Ladder uses a staring score of 1200 and k=32. That means 16 points are risked for an even match, and up to 32 points for the most extreme mismatch.