Start here · Essential guide
How Ranking Systems Rate Players
How ladders turn match results into a single skill number, what that number actually estimates, and the limits worth remembering when you read your own rank.
Competitive Play
Rating and Ranking Systems
How ladders turn match results into skill ratings.
Building Team Ratings from Individual Ratings
Averages, sums, weighted blends and learned models: how systems turn several player ratings into one team figure, and where each shortcut breaks down.
Elo Ratings Explained
A clear walk through the Elo expected score formula, the rating update step with worked numbers, and why the size of the K-factor changes how a ladder behaves.
Glicko and Rating Uncertainty
How Glicko adds a confidence value to each rating so new or returning players move quickly, established players move less, and the system knows how sure it is.
Matchmaking Quality Versus Queue Time
Why tighter skill matching means longer waits, how matchmakers widen their search over time, and the design choices behind balancing fair games against speed.
Placement Matches and Starting Ratings
How a short run of games is used to guess a new player's starting level, how reliable that guess tends to be, and why early ratings often need correcting.
Rank Inflation and Deflation
Why a ladder's ranks can drift upward or downward over a season even when player skill is unchanged, and which design features tend to cause or limit the drift.
Rating Volatility and Win Streaks
How streaks of wins and losses move a rating, why short swings are normal even for a steady player, and how to separate real improvement from ordinary noise.
Seasonal Resets and Soft Resets
What happens to rating accuracy and player motivation when a ladder is compressed at the start of a season, and why designers choose full, soft or partial resets.
Smurf Accounts and Their Statistical Effect
How experienced players on fresh accounts distort lower brackets, why a rating system is slow to notice them, and the signals ladders use to detect them.
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