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Sun Xin
Sun Xin
SunXin72
Beijing Chaoyang TT Club πŸ“ 东城区 πŸ‡¨πŸ‡³ CN
1401
Rating iBayesian conservative rating = ΞΌ βˆ’ 2Οƒ. The system is 95% confident this player's skill is at least this value. More matches lower Οƒ and raise this number.
1515
ΞΌ (mean) iΞΌ (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.
56.8
σ (uncertainty) iσ (Sigma) = how confident the system is in the rating. Lower is better. New players start at σ=200 — it falls with every match played.
50%
Win Rate iWins Γ· (wins + losses). Requires at least 1 match.
4
Wins
4
Losses
Skill Confidence Intervals iBased on ΞΌ and Οƒ, the system estimates this player's skill range at different confidence levels. The smaller Οƒ is, the narrower the band.
68%  (1Οƒ)1458 β€” 1572
95%  (2Οƒ)1401 β€” 1629
99.7% (3Οƒ)1345 β€” 1685
Trust Level iHow reliably this player submits match results. Formula: rejections per 10 submissions. Fewer rejections = higher trust. No data
No submissions yet

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Recent Matches

Date Player A Player B Δμ iChange in ΞΌ after this match. Positive = won. The size depends on the skill gap between both players and their Οƒ values.
5/27/2026 SongXue80 πŸ† SunXin72 +10.0
5/5/2026 SunXin72 πŸ† MaYu73 -10.0
4/22/2026 πŸ† XuHui71 SunXin72 -5.0
4/3/2026 πŸ† GaoDan78 SunXin72 -32.0
3/20/2026 LuoTing79 πŸ† SunXin72 -6.0
1/21/2026 SunXin72 πŸ† GuoQian76 -9.0
1/16/2026 πŸ† SunXin72 ZhuMei74 -9.0
12/19/2025 πŸ† SunXin72 HuLan75 +71.0