Zhang Jun
ZhangJun43
Beijing Tongzhou TT Club
π δΈ°ε°εΊ
π¨π³ CN
1277
Rating
Bayesian conservative rating = ΞΌ β 2Ο. The system is 95% confident this player's skill is at least this value. More matches lower Ο and raise this number.
1519
ΞΌ (mean)
ΞΌ (Mu) is the best estimate of this player's skill level. Wins raise it, losses lower it. Beating a stronger player earns more than beating a weaker one.
121.1
Ο (uncertainty)
Ο (Sigma) = how confident the system is in the rating. Lower is better. New players start at Ο=200 β it falls with every match played.
50%
Win Rate
Wins Γ· (wins + losses). Requires at least 1 match.
5
Wins
5
Losses
Skill Confidence Intervals
Based on ΞΌ and Ο, the system estimates this player's skill range at different confidence levels. The smaller Ο is, the narrower the band.
68% (1Ο)1398 β 1640
95% (2Ο)1277 β 1761
99.7% (3Ο)1156 β 1882
Trust Level
How reliably this player submits match results. Formula: rejections per 10 submissions. Fewer rejections = higher trust.
No data
No submissions yet
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Login / RegisterRecent Matches
| Date | Player A | Player B | ΞΞΌ Change in ΞΌ after this match. Positive = won. The size depends on the skill gap between both players and their Ο values. | ||
|---|---|---|---|---|---|
| 4/27/2026 | |
π ZhangJun43 |  |
ZhaoGang47 | +3.0 |
| 4/20/2026 |  |
π LiLei42 | |
ZhangJun43 | -3.0 |
| 4/4/2026 | |
ZhangJun43 |  |
π LiuTao44 | -8.0 |
| 4/2/2026 | |
π ZhangJun43 |  |
ZhangJun3 | +16.0 |
| 3/18/2026 | |
ZhangJun43 |  |
π ChenMing45 | -14.0 |
| 3/1/2026 |  |
π WuHao50 | |
ZhangJun43 | -23.0 |
| 2/27/2026 | |
π ZhangJun43 |  |
YangChao46 | +19.0 |
| 2/20/2026 |  |
π WangWei41 | |
ZhangJun43 | -47.0 |
| 2/8/2026 |  |
ZhouPeng49 | |
π ZhangJun43 | +28.0 |
| 1/30/2026 |  |
ShaoYong122 | |
π ZhangJun43 | +19.0 |