bridgeranking.net calculates a Performance Grade for every player across participating Australian clubs — using the same methodology as England's National Grading Scheme, adapted for local conditions. One number that means something.
Unlike a percentage average that remembers every session you've ever played, your Performance Grade weights recent results and lets old ones fade. Strong play this month matters more than strong play two years ago.
From Two (beginner) to Ace of Spades (elite). Only the top band is split by suit — the same structure as England's National Grading Scheme.
Each result contributes less as time passes, reaching zero after about 2,000 boards — roughly ten months of regular play. Your grade reflects your current ability, not career history.
New and infrequent players' grades are pulled toward 50 until enough boards have been played to establish a reliable picture. Published only after 150 boards.
Rankings update after each session. Every player sees their own grade, their band, and how many boards have been counted toward it.
| # | Player | Grade | Band | Boards | Trend |
|---|---|---|---|---|---|
| 1 | Margaret T. | 74.2 | Ace ♣ | 1,840 | ↑ 0.4 |
| 2 | David H. | 71.8 | King | 2,210 | ↑ 1.1 |
| 3 | Susan R. | 69.5 | King | 1,620 | — 0.0 |
| 4 | Peter R. | 68.1 | King | 1,480 | ↑ 0.3 |
| 5 | Robyn W. | 67.1 | Queen | 890 | ↓ 0.6 |
| 6 | Allan B. | 64.8 | Queen | 1,450 | ↑ 0.2 |
After each session, results are imported from the club's Compscore system via USEBIO XML. Each board pair — and each player — is given an expected score against their opponents' current grades.
The difference between your actual percentage and your expected percentage becomes your performance score for the session. Beating stronger players counts more than beating weaker ones.
Recent boards count more than old ones. After 2,000 boards (roughly ten months), a session contributes nothing. The combined weighted average is your Performance Grade. A shrinkage factor prevents wild swings for players with few results.
The system is currently in review at clubs in the Illawarra and North Sydney. If your club uses Compscore and you'd like to join, get in touch at admin@bridgeranking.net. Setup takes one afternoon.