PENG Jianfeng · ZUOMEICHENG

69rank
+81.2Butler · 130 bds
+0.62per board
±4.5swing
-0.28vs par /bd · #445/672
+0.84adjusted /bd
Butler per round: 24.8 -23.3 -3.7 -1 22.3 26.1 10.8 -18.6 -4.8 17.9 -3.9 9.3 25.3by round

vs par split: bidding -0.06 · play -0.34

Strength of schedule: opponents averaged +0.22/bd (a tough draw) → opponent-adjusted +0.84/bd

Card play — on target: opening leads 82.6% #307 of 671 · declarer play 79.2% #291 of 671 · defence 90.5% #115 of 672

Card play by contract type — on target
vs NTvs a suit
Opening leads·82.6% (23)
Declarer play·79.2% (24)
Defence·90.5% (42)

Opening leads by suit led: ♠ 50.0% (4) · ♥ 100.0% (5) · ♦ 100.0% (6) · ♣ 75.0% (8)

vs par by strain: a suit -0.40 (85)

vs par by level: part-score +0.22 (37) · game -0.30 (40) · slam -3.75 (8)

By role: declaring +0.52/bd (-2.30 vs par · 66) · defending +0.73/bd (+1.80 vs par · 64)

By vulnerability: vulnerable +1.00/bd (-0.26 vs par · 74) · not vulnerable +0.12/bd (-0.32 vs par · 56)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1Y.ZhouT.Zhou – Y.ShiClosed10+24.8+2.48+1.50
Round 3Z.ZhangJ.Pszczola – M.KwiecienOpen10-23.3-2.33-1.10
Round 4J.ChenC.Balicki – A.ZmudzinskiOpen10-3.7-0.37-0.60
Round 5Z.ZhangX.Wei – Y.HuangOpen10-1.0-0.10-1.00
Round 6J.ChenH.Kondoch – F.ZimmermannOpen10+22.3+2.23+1.80
Round 8Z.ZhangI.Brisebois – J.SmithOpen10+26.1+2.61+1.80
Round 9J.ChenZ.Nagy – D.LilleyOpen10+10.8+1.08+0.00
Round 10Z.ZhangA.Budirahardja – R.EffendyClosed10-18.6-1.86-3.20
Round 11Z.ZhangJ.Qian – D.ShenClosed10-4.8-0.48-0.20
Round 12J.ChenJ.Wang – Z.ZhangClosed10+17.9+1.79+0.80
Round 13J.ChenS.Mukherjee – B.DasOpen10-3.9-0.39-3.30
Round 14J.ChenA.Levy – P.ChemlaOpen10+9.3+0.93-1.80
Round 15J.ChenH.Drenkelford – J.Van CleeffOpen10+25.3+2.53+1.60

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
+13.5Round 9HOFFMAN284♥♠A-4+15
+13.1Round 8L'ECUYER136♦♥Q-1+14
+12.4Round 1KOREA-CHINA36♣♠7=+12
+11.2Round 6GERMANY JUNIORS266♠♣Q-2+12
+9.4Round 6GERMANY JUNIORS215♣x♦Q-3+8
+8.9Round 15VENTIN261Nx♣K+1+11
+8.3Round 8L'ECUYER123N♦3+1+7
+8.2Round 13TEXAN ACES44♠♦8-1+13
+7.7Round 14ZALESKI146♠♥7=-10
+7.6Round 12LANP PECH223N♠K+2+8
+7.0Round 15VENTIN303N♠3-3+12
+6.9Round 13TEXAN ACES103Nx♣J-1+8
+6.7Round 1KOREA-CHINA74♥♠J+1+0
+6.5Round 1KOREA-CHINA83N♣7=+7
+6.1Round 5SHANGHAI JIANQIAO161Nx♠4+1+6
+5.6Round 9HOFFMAN273♦♣Q-4+8
+5.4Round 15VENTIN283♠♦A-1+5
+4.8Round 14ZALESKI183♦♠8-1+9
+4.7Round 1KOREA-CHINA44♠♠2-3+4
+4.7Round 11ZHEJIANG ZHENGYUAN164♠♣9+1+0
+4.6Round 8L'ECUYER113N♦10+1+4
+4.5Round 5SHANGHAI JIANQIAO122N♣2-3+5
+4.4Round 15VENTIN214♠♣Q-1+5
+4.2Round 9HOFFMAN294♠♥K-3+5
+4.2Round 12LANP PECH214♥♦6-1+4
+4.1Round 13TEXAN ACES24♥♣2+1+0
+3.8Round 8L'ECUYER193♥♣3=+1
+3.8Round 11ZHEJIANG ZHENGYUAN132♥♦2-1+5
+3.7Round 10GABSI43♣♠2-1+1
+3.6Round 15VENTIN231N♥2=+0
+3.5Round 11ZHEJIANG ZHENGYUAN143N♠4+2-14
+3.5Round 12LANP PECH292♠♦K=+5
+3.2Round 14ZALESKI153♦♦J+1+1
+3.0Round 9HOFFMAN304♠♣K-1+5
+2.6Round 11ZHEJIANG ZHENGYUAN113N♥2=-1
+2.5Round 8L'ECUYER173N♦Q+2-5
+2.4Round 6GERMANY JUNIORS252♥♦8=-1
+2.4Round 14ZALESKI164♠♣6=+0
+2.3Round 3MARKOWICZ234♠♣10+1+0
+2.3Round 4RUSSIA102N♠2=+0
+2.2Round 4RUSSIA64♣♠Q-2+11
+2.2Round 12LANP PECH274♥♠A=-6
+2.1Round 4RUSSIA82♠♦Q+2+1
+2.1Round 4RUSSIA92♣♣3=-1
+2.1Round 6GERMANY JUNIORS303N♥2-2+6
+2.1Round 15VENTIN272♥♠K+1+0
+1.8Round 6GERMANY JUNIORS241N♠K=-1
+1.6Round 5SHANGHAI JIANQIAO192N♣J-2+0
+1.6Round 14ZALESKI113♠♣Q-2+5
+1.5Round 8L'ECUYER181♠♥3+1+0
+1.4Round 1KOREA-CHINA93N♥10+2+0
+1.3Round 3MARKOWICZ295♦♣A+1-1
+1.3Round 12LANP PECH304♥♦K-1+5
+1.2Round 1KOREA-CHINA103N♠Q=-3
+1.2Round 5SHANGHAI JIANQIAO113♥♣9-2+5
+1.2Round 11ZHEJIANG ZHENGYUAN194♠♣J+1+1
+1.2Round 12LANP PECH253N♣4=-5
+1.1Round 6GERMANY JUNIORS223♣♠4-3+6
+1.0Round 4RUSSIA51N♦5-1-1
+0.9Round 6GERMANY JUNIORS293♦♦7=+0
+0.9Round 9HOFFMAN244♥♦4=-5
+0.9Round 13TEXAN ACES53N♠2+2-12
+0.7Round 15VENTIN242♥♠7-2+5
+0.6Round 14ZALESKI134♠♣K+2-6
+0.5Round 12LANP PECH242N♠A=+6
+0.5Round 14ZALESKI171N♥4+1+0
+0.4Round 9HOFFMAN252♠♣K-1-3
+0.3Round 10GABSI32♥♦K+1+0
+0.3Round 12LANP PECH285♦x♣9-2-4
+0.2Round 10GABSI71N♦5=+9
+0.1Round 11ZHEJIANG ZHENGYUAN203N♠5+3+13
+0.0Round 3MARKOWICZ251N♥10=+0
-0.0Round 13TEXAN ACES94♠♦2+1+0
-0.1Round 1KOREA-CHINA13♥♣3+1+7
-0.2Round 6GERMANY JUNIORS274♥♦K-1-5
-0.2Round 10GABSI53N♣J+3-10
-0.2Round 15VENTIN224♠♠4+1-5
-0.5Round 10GABSI64♠♣A=+0
-0.5Round 12LANP PECH235♦♠6-1-6
-0.5Round 14ZALESKI191N♠6+1-6
-0.6Round 3MARKOWICZ211N♣10+2+0
-0.6Round 4RUSSIA71N♥2+1+1
-0.6Round 5SHANGHAI JIANQIAO204♠♣A=+1
-0.7Round 3MARKOWICZ223N♠2+1+5
-0.8Round 1KOREA-CHINA62♠♦5-1+0
-0.8Round 10GABSI95♠x♣10-2+0
-0.9Round 4RUSSIA23N♣2+2-1
-0.9Round 8L'ECUYER152♠♦7=+1
-0.9Round 10GABSI11N♣10-1-4
-1.0Round 5SHANGHAI JIANQIAO142♠♦5=+0
-1.0Round 6GERMANY JUNIORS283N♥4+1-1
-1.0Round 15VENTIN294♠♣K=+0
-1.1Round 8L'ECUYER162♠♥A+1+0
-1.2Round 13TEXAN ACES14♠♥J=+0
-1.3Round 13TEXAN ACES74♥♣A+1+0
-1.8Round 1KOREA-CHINA54♠♣5-1-5
-1.9Round 5SHANGHAI JIANQIAO154♥♠K+1-11
-2.1Round 4RUSSIA42♠♥J+2-10
-2.3Round 5SHANGHAI JIANQIAO184♠♣A-1-5
-2.3Round 10GABSI82♠♣J+1-6
-2.4Round 11ZHEJIANG ZHENGYUAN172♥♣A=+0
-2.4Round 12LANP PECH263N♦5-1+1
-2.5Round 9HOFFMAN223♠♣3+1-6
-2.6Round 8L'ECUYER204♠♣3=+0
-2.9Round 5SHANGHAI JIANQIAO172♠♦2=-6
-2.9Round 11ZHEJIANG ZHENGYUAN154♠♥A-1+2
-3.1Round 8L'ECUYER142♥♠3-1-4
-3.1Round 9HOFFMAN264♠♦7-1-6
-3.3Round 4RUSSIA33N♠2+3-1
-3.7Round 9HOFFMAN213N♣8=-5
-3.9Round 3MARKOWICZ304♠♥A=+5
-4.0Round 3MARKOWICZ242♣x♦A-2-4
-4.0Round 14ZALESKI123♥♠3=-1
-4.5Round 3MARKOWICZ264♣♦A+2-4
-4.5Round 13TEXAN ACES66♣♠4-1-14
-5.4Round 1KOREA-CHINA23N♣5=-7
-5.4Round 6GERMANY JUNIORS234♥♠7-1-6
-5.6Round 15VENTIN256♠♥3-2-17
-5.7Round 5SHANGHAI JIANQIAO133N♠2+1-5
-6.2Round 10GABSI26♦♥2-1-10
-6.3Round 3MARKOWICZ283N♠4+1-5
-6.5Round 4RUSSIA15♥x♥A-2-5
-6.8Round 13TEXAN ACES86♠♦Q-1-17
-6.9Round 3MARKOWICZ273N♥9+1-7
-7.0Round 14ZALESKI202♠♠5+2-10
-7.4Round 11ZHEJIANG ZHENGYUAN185♣x♠K-2-9
-7.5Round 9HOFFMAN231N♠Q-2-8
-8.0Round 11ZHEJIANG ZHENGYUAN123N♥3=+1
-10.2Round 13TEXAN ACES33N♥2-1-11
-11.9Round 10GABSI102♠xx♥2=-12