Zhang Jun
ZhangJun3
Beijing Tongzhou TT Club
π ζι³εΊ
π¨π³ CN
1418
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.
1508
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.
44.9
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)1463 β 1553
95% (2Ο)1418 β 1598
99.7% (3Ο)1373 β 1643
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. | ||
|---|---|---|---|---|---|
| 5/20/2026 | |
ZhangJun3 |  |
π HuangXia68 | -12.0 |
| 5/10/2026 |  |
π LiLei2 | |
ZhangJun3 | -4.0 |
| 5/5/2026 | |
π ZhangJun3 |  |
LiuTao4 | +12.0 |
| 4/2/2026 |  |
π ZhangJun43 | |
ZhangJun3 | -15.0 |
| 3/21/2026 | |
π ZhangJun3 |  |
ZhaoGang7 | +6.0 |
| 3/10/2026 | |
ZhangJun3 |  |
π YangChao6 | -9.0 |
| 3/10/2026 | |
π ZhangJun3 |  |
ChenMing5 | +27.0 |
| 3/3/2026 |  |
π ZhouPeng9 | |
ZhangJun3 | -37.0 |
| 2/28/2026 |  |
WuHao10 | |
π ZhangJun3 | -69.0 |
| 1/5/2026 |  |
WangWei1 | |
π ZhangJun3 | +105.0 |