🇨🇳 NIU Yuanzhe · CHINA

17rank
+17.2Butler · 126 bds
+0.14per board
±5.8swing
+0.11vs par /bd · #9/20
-0.20adjusted /bd
Butler per round: 72.9 72.9 72.9 72.9 -39.4 -39.4 -39.4 -16.3 -16.3by round

vs par split: bidding +0.19 · play +0.35

Strength of schedule: opponents averaged -0.34/bd (an easy draw) → opponent-adjusted -0.20/bd

Card play — on target: opening leads 87.5% #8 of 20 · declarer play 82.1% #8 of 20 · defence 86.7% #9 of 20

Bidding activity — not a pass: 42.5% #10 of 20 (155/365)

Card play by contract type — on target
vs NTvs a suit
Opening leads71.4% (7)94.1% (17)
Declarer play75.0% (4)83.3% (24)
Defence100.0% (13)81.2% (32)

Opening leads by suit led: ♠ 100.0% (5) · ♥ 87.5% (8) · ♦ 80.0% (5) · ♣ 83.3% (6)

vs par by strain: NT -0.30 (37) · a suit +0.28 (89)

vs par by level: part-score -1.24 (46) · game +1.60 (70) · slam -4.10 (10)

By role: declaring -0.19/bd (-2.22 vs par · 69) · defending +0.54/bd (+2.93 vs par · 57)

By vulnerability: vulnerable -0.43/bd (-0.97 vs par · 63) · not vulnerable +0.71/bd (+1.19 vs par · 63)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
QuarterfinalZ.WangK.Kuflowski – W.OkrzesikClosed14+14.0+1.00+0.50
QuarterfinalZ.WangF.Kurlit – W.BakOpen14-15.4-1.10-1.00
QuarterfinalZ.WangL.Ciborowska – K.CiborowskiClosed14+38.8+2.77+4.07
QuarterfinalZ.WangW.Okrzesik – K.KuflowskiClosed14+35.5+2.54+2.57
SemifinalZ.WangR.Xiao – J.YueClosed14-9.6-0.69-1.79
SemifinalZ.WangA.Zhou – M.HuClosed14-2.3-0.16+1.21
SemifinalZ.WangR.Xiao – J.YueOpen14-27.5-1.96-1.79
FinalZ.WangI.Moskovitz – D.MsikaClosed14-5.8-0.41-2.57
FinalZ.WangI.Moskovitz – D.MsikaClosed14-10.5-0.75-0.21

Every board — best Butler first↑ top

vs par = IMPs this pair scored above (+) or below (−) the board’s double-dummy par — what bidding and play (theirs and the opponents’) added or gave away against perfect play.

ButlerRoundOpponentsBdContractLeadResvs par
+12.3Semifinal🇺🇸 USA2184♠♥7-1+12
+11.7Final🇮🇱 ISRAEL225♦xx♦Q+1+2
+11.0Quarterfinal🇵🇱 POLAND183NT-5+12
+9.7Final🇮🇱 ISRAEL384♠xx♦2+1+14
+9.0Semifinal🇺🇸 USA2153NT♥6-1+12
+8.7Final🇮🇱 ISRAEL313NT♠9-1+13
+8.3Quarterfinal🇵🇱 POLAND402♠♣T-4+12
+8.3Final🇮🇱 ISRAEL374♠♦3+1+7
+8.1Quarterfinal🇵🇱 POLAND496♥♦4-2+11
+8.0Quarterfinal🇵🇱 POLAND336♠♣A-1+11
+8.0Semifinal🇺🇸 USA2324♥+1+11
+7.7Semifinal🇺🇸 USA2284♥♠A-1+12
+7.7Final🇮🇱 ISRAEL264♠♥T=+0
+7.6Quarterfinal🇵🇱 POLAND454♥♣9-1+8
+7.6Quarterfinal🇵🇱 POLAND543NT♥4-1+6
+6.7Final🇮🇱 ISRAEL155♦x♣A=+6
+6.3Quarterfinal🇵🇱 POLAND73NT♠6+3-9
+6.1Quarterfinal🇵🇱 POLAND362♠♦3-1+8
+6.1Quarterfinal🇵🇱 POLAND382♥♠A=+6
+5.9Quarterfinal🇵🇱 POLAND244♦=+13
+5.7Quarterfinal🇵🇱 POLAND314♥♠8+2+13
+5.4Quarterfinal🇵🇱 POLAND165♣-1+6
+5.3Quarterfinal🇵🇱 POLAND533NT♥T=+0
+5.3Semifinal🇺🇸 USA2303♠+1+6
+5.3Final🇮🇱 ISRAEL275♥♠2-1+10
+5.1Quarterfinal🇵🇱 POLAND393♠♣7=+1
+4.7Quarterfinal🇵🇱 POLAND294♠♣9+2+11
+4.7Quarterfinal🇵🇱 POLAND434♠x♣3=+14
+4.3Quarterfinal🇵🇱 POLAND14♠♣Q-1+10
+4.3Final🇮🇱 ISRAEL163NT♣2+2+1
+4.1Quarterfinal🇵🇱 POLAND444♠♥7=+0
+4.0Quarterfinal🇵🇱 POLAND22♠♣5=+0
+4.0Semifinal🇺🇸 USA2423NT+2+0
+4.0Final🇮🇱 ISRAEL362♠♣5+2+7
+3.7Quarterfinal🇵🇱 POLAND133♥♦Q=-8
+3.7Semifinal🇺🇸 USA233♣♦Q+1+0
+3.0Quarterfinal🇵🇱 POLAND55♦♥A-1+5
+3.0Quarterfinal🇵🇱 POLAND464♥♠4-3+1
+2.7Quarterfinal🇵🇱 POLAND514♠♥2+1+13
+2.7Semifinal🇺🇸 USA2141NT♠2-1-2
+2.7Final🇮🇱 ISRAEL342♥♦A+1+1
+2.4Quarterfinal🇵🇱 POLAND372♣♠Q+2+0
+2.3Final🇮🇱 ISRAEL173NT♦4+1+7
+2.0Final🇮🇱 ISRAEL285♣♠7-1-6
+1.9Quarterfinal🇵🇱 POLAND222♥-1-5
+1.9Quarterfinal🇵🇱 POLAND523♠♦Q+1+1
+1.7Semifinal🇺🇸 USA271♥x♥2-1-9
+1.7Semifinal🇺🇸 USA2262♣♣4=-1
+1.7Final🇮🇱 ISRAEL301NT♠Q=-1
+1.6Quarterfinal🇵🇱 POLAND343♣♦Q=+0
+1.3Semifinal🇺🇸 USA2162♣♦2-1-2
+1.3Semifinal🇺🇸 USA2272♠♦7+1+0
+1.3Semifinal🇺🇸 USA2373NT=+0
+1.3Semifinal🇺🇸 USA2403NT+2+1
+1.0Quarterfinal🇵🇱 POLAND93NT♠6=+0
+1.0Semifinal🇺🇸 USA2103NT♣2=+1
+1.0Semifinal🇺🇸 USA2133♣♠7-1+6
+0.9Quarterfinal🇵🇱 POLAND83NT♠9+1+14
+0.9Quarterfinal🇵🇱 POLAND504♠x♦K-2-5
+0.7Semifinal🇺🇸 USA296♠♣T+1-13
+0.7Final🇮🇱 ISRAEL413NT♦4+2+0
+0.6Quarterfinal🇵🇱 POLAND195♥+1+1
+0.3Quarterfinal🇵🇱 POLAND144♥♣J=-1
+0.3Semifinal🇺🇸 USA282♦♠K+2+0
+0.0Quarterfinal🇵🇱 POLAND44♥♠7+1+0
+0.0Quarterfinal🇵🇱 POLAND424♠♦6-2+0
+0.0Quarterfinal🇵🇱 POLAND474♠♥A+1+0
-0.0Semifinal🇺🇸 USA214♠♥7+1+0
-0.0Semifinal🇺🇸 USA254♥♥2=+0
-0.0Semifinal🇺🇸 USA264♥♠4=-7
-0.0Semifinal🇺🇸 USA2114♥♦J=+1
-0.0Semifinal🇺🇸 USA2193NT♦K+3+11
+0.0Semifinal🇺🇸 USA2361NT+2+0
+0.0Semifinal🇺🇸 USA2415♥=+0
+0.0Final🇮🇱 ISRAEL406♥♦A=+0
+0.0Final🇮🇱 ISRAEL423NT♠3+2+0
-0.3Quarterfinal🇵🇱 POLAND61NT♠4-1+1
-0.3Quarterfinal🇵🇱 POLAND274♠-1+2
-0.3Quarterfinal🇵🇱 POLAND412♦♠9+2+0
-0.3Semifinal🇺🇸 USA2345♦=-2
-0.4Quarterfinal🇵🇱 POLAND173NT=-1
-0.4Quarterfinal🇵🇱 POLAND254♠-1-6
-0.6Quarterfinal🇵🇱 POLAND303♦♥A+1+0
-0.7Semifinal🇺🇸 USA2334♠+1+10
-0.7Semifinal🇺🇸 USA2391NT+2-1
-1.3Semifinal🇺🇸 USA2223♠♥6+2-10
-1.6Quarterfinal🇵🇱 POLAND103NT♦7=+1
-1.7Final🇮🇱 ISRAEL194♠♠2-3-6
-1.9Quarterfinal🇵🇱 POLAND562NT♣K=+0
-2.0Final🇮🇱 ISRAEL211♠♥2-2-11
-2.1Quarterfinal🇵🇱 POLAND113♦♥7=-1
-2.1Quarterfinal🇵🇱 POLAND282♠-1+5
-2.4Quarterfinal🇵🇱 POLAND122♣x♣2-2-2
-2.7Semifinal🇺🇸 USA2121NT♦4+1+11
-3.0Semifinal🇺🇸 USA2242♥♣A+1-6
-3.0Final🇮🇱 ISRAEL353NT♦8-2+3
-3.1Quarterfinal🇵🇱 POLAND34♥♠6=-3
-3.1Quarterfinal🇵🇱 POLAND552♠♥A+1-7
-3.6Quarterfinal🇵🇱 POLAND354♥♠4-1-6
-3.7Semifinal🇺🇸 USA2177NT♦Q=+0
-3.7Final🇮🇱 ISRAEL232♦♦Q+3-10
-4.0Semifinal🇺🇸 USA244♥♣J-1+3
-4.3Semifinal🇺🇸 USA2213♣♠5+2-13
-4.7Quarterfinal🇵🇱 POLAND325♣♦J=+1
-4.9Quarterfinal🇵🇱 POLAND152NT-2-11
-5.4Quarterfinal🇵🇱 POLAND483♣♠3=-6
-6.1Quarterfinal🇵🇱 POLAND213NT=+0
-6.3Semifinal🇺🇸 USA2203♠♥3+2+7
-6.3Semifinal🇺🇸 USA2232♠♦3=-5
-6.3Final🇮🇱 ISRAEL323NT♥6-2-13
-6.7Final🇮🇱 ISRAEL203♠♥4+1-10
-7.4Quarterfinal🇵🇱 POLAND234♥=-9
-7.6Quarterfinal🇵🇱 POLAND263NT-1-12
-7.7Semifinal🇺🇸 USA2296♥=-11
-7.7Final🇮🇱 ISRAEL255♥♣A=+0
-9.0Semifinal🇺🇸 USA2314♠=-10
-10.0Final🇮🇱 ISRAEL243NT♥3+1-7
-10.7Semifinal🇺🇸 USA2256♦♥9=+0
-11.0Quarterfinal🇵🇱 POLAND202NTx-2-9
-11.0Final🇮🇱 ISRAEL393NT♦2-2-11
-12.0Semifinal🇺🇸 USA2383NT-1-12
-12.0Final🇮🇱 ISRAEL296♥x♦T=-6
-14.0Semifinal🇺🇸 USA226NT♣J-1-16
-14.0Final🇮🇱 ISRAEL184♣x♦A-4-12
-14.0Final🇮🇱 ISRAEL334♥xx♠Q-3-17
-17.0Semifinal🇺🇸 USA2357♥x-1-17