ZHANG Renda · ZHANG

221rank
+37.3Butler · 150 bds
+0.25per board
±4.6swing
+0.02vs par /bd · #315/672
+0.05adjusted /bd
Butler per round: 3.4 3 15.7 -1.9 -18.4 0.9 20.6 14.9 -2 -8.5 3.2 6.4by round

vs par split: bidding +0.04 · play +0.36

Strength of schedule: opponents averaged -0.20/bd (an easy draw) → opponent-adjusted +0.05/bd

Card play — on target: opening leads 66.7% #603 of 671 · declarer play 78.0% #323 of 671 · defence 90.2% #135 of 672

Card play by contract type — on target
vs NTvs a suit
Opening leads·66.7% (9)
Declarer play·78.0% (41)
Defence·90.2% (51)

Opening leads by suit led: ♠ 100.0% (2) · ♥ 50.0% (4) · ♣ 66.7% (3)

vs par by strain: a suit +0.40 (98)

vs par by level: part-score +1.53 (36) · game +0.26 (53) · slam -3.33 (9)

By role: declaring +0.80/bd (-1.02 vs par · 80) · defending -0.39/bd (+1.21 vs par · 70)

By vulnerability: vulnerable -0.31/bd (-0.35 vs par · 79) · not vulnerable +0.87/bd (+0.44 vs par · 71)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 3CHEN M. Z.M.Fukazawa – K.TakahashiOpen10+3.4+0.34-1.00
Round 5D.YongG.Chagas – M.Villas-BoasOpen10+3.0+0.30-0.30
Round 6R.RongH.Li – J.LvOpen10+15.7+1.57+2.60
Round 7CHEN M. Z.Y.Lu – H.YangClosed10-1.9-0.19+1.10
Round 8D.YongP.Correa – L.PainOpen10-11.8-1.18-1.80
Round 9D.YongY.Bi – J.GuOpen10+5.7+0.57+0.00
Round 10D.YongG.Zhang – J.WengOpen10+9.0+0.90-0.30
Round 11CHEN M. Z.J.Lin – Z.ChenOpen10+14.9+1.49+1.40
Round 12CHEN M. Z.H.Humburg – G.MattssonClosed10-2.0-0.20-0.90
Round 13CHEN M. Z.B.Shan – G.ShenOpen10-8.5-0.85-4.20
Round 14CHEN M. Z.L.Li – L.SunClosed10+3.2+0.32+1.70
Round 15CHEN M. Z.V.Kholomeev – A.VoronovClosed10+6.4+0.64-0.40

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
+11.2Round 11XIAMEN206♣♠4=-2
+10.5Round 14HUBEIXINYI CLUB146♠♦J-1+16
+9.8Round 14HUBEIXINYI CLUB164♠♣6-1+12
+9.1Round 15MOSCOW292♠♣A+2+10
+8.9Round 5HUSSEIN-CHAGAS183N♥A-5+8
+8.9Round 15MOSCOW261Nx♦6+1+11
+8.8Round 13SHANGHAI KEJU14♠♣6-1+10
+8.7Round 3NANIWADA292♥♠K-1+11
+8.2Round 11XIAMEN111♠♥8=+11
+8.0Round 9SHNT CLUB294♠x♥K-2+9
+8.0Round 11XIAMEN123N♥2=-1
+7.1Round 9SHNT CLUB224♠♣3=+5
+7.1Round 15MOSCOW281N♣6+1+6
+6.9Round 3NANIWADA273N♥7+1+7
+6.5Round 12GERMANY SENIORS 1243N♥4=+11
+6.5Round 13SHANGHAI KEJU64♠♥3+1-11
+6.4Round 12GERMANY SENIORS 1213♠♥K+1+7
+6.3Round 3NANIWADA283N♠2+1+5
+5.3Round 6NINGBOYONGGUAN216♥♣A-1+11
+5.2Round 10SII-06 STAR94♥♠2=+8
+5.0Round 6NINGBOYONGGUAN223♦♥Q=+0
+4.8Round 13SHANGHAI KEJU103N♥K-1+6
+4.2Round 9SHNT CLUB271♦x♠K=+7
+4.1Round 6NINGBOYONGGUAN293♠♥J-3+5
+4.1Round 11XIAMEN183♠♣A=+6
+3.5Round 10SII-06 STAR25♦♦7=+0
+3.3Round 3NANIWADA303N♣4=-6
+3.1Round 12GERMANY SENIORS 1304♥x♦A-1+6
+2.9Round 10SII-06 STAR11N♠9=+0
+2.8Round 6NINGBOYONGGUAN253♦♥K=+6
+2.6Round 7CHEN21♥♠K-1+5
+2.5Round 5HUSSEIN-CHAGAS194♣♦2=+1
+2.3Round 12GERMANY SENIORS 1264♥♣A-1+6
+2.2Round 5HUSSEIN-CHAGAS122♦x♣K-1+2
+2.2Round 9SHNT CLUB254♠♥Q-3+0
+2.0Round 6NINGBOYONGGUAN264♠♥Q+1+5
+1.9Round 7CHEN74♠♥3-1+6
+1.5Round 13SHANGHAI KEJU53N♠6+3-12
+1.4Round 8MANT192♠♥K-1-2
+1.2Round 5HUSSEIN-CHAGAS113♣♠9-2+5
+1.2Round 10SII-06 STAR32♥♥3+2+1
+1.2Round 11XIAMEN132♥♣4=+1
+1.0Round 6NINGBOYONGGUAN283N♦2+1+1
+1.0Round 8MANT143♠♥A-2+0
+1.0Round 9SHNT CLUB243N♦3+1-5
+0.9Round 8MANT134♠♥3+2+7
+0.8Round 7CHEN55♦♣K-1+3
+0.8Round 7CHEN94♥♦K+2-11
+0.8Round 13SHANGHAI KEJU33N♥7+2+0
+0.7Round 5HUSSEIN-CHAGAS143N♠Q-1+2
+0.6Round 3NANIWADA212N♣10+1+0
+0.6Round 8MANT173N♥7=-6
+0.5Round 14HUBEIXINYI CLUB191N♠J+1+6
+0.5Round 15MOSCOW241N♥2=+5
+0.2Round 6NINGBOYONGGUAN274♥♦K-1+5
+0.2Round 7CHEN44♥♠9=+1
+0.2Round 9SHNT CLUB231N♥3+1+0
+0.2Round 10SII-06 STAR71N♦9=+9
-0.0Round 10SII-06 STAR102♠♣5=+0
-0.0Round 13SHANGHAI KEJU94♠♠2+1+0
-0.1Round 7CHEN14♥♦7=-1
-0.1Round 14HUBEIXINYI CLUB112♠♣Q-1-4
-0.2Round 10SII-06 STAR53N♦2+3-10
-0.2Round 11XIAMEN194♠♥K=+0
-0.2Round 15MOSCOW224♠♥2+1-5
-0.4Round 6NINGBOYONGGUAN303N♠2-1-5
-0.4Round 9SHNT CLUB285♦♠K+1+5
-0.4Round 13SHANGHAI KEJU74♥♠9=+1
-0.5Round 10SII-06 STAR64♠♣K=+0
-0.5Round 14HUBEIXINYI CLUB171N♠4+1+0
-0.6Round 5HUSSEIN-CHAGAS204♠♣K=+1
-0.7Round 7CHEN102♥♣Q+1+0
-0.8Round 5HUSSEIN-CHAGAS162♣♠A-2-1
-0.8Round 12GERMANY SENIORS 1253N♥5+2-6
-0.9Round 7CHEN64♥♦Q+1+0
-0.9Round 8MANT152♠♠J=+1
-1.0Round 10SII-06 STAR42♠♦6-1-5
-1.1Round 8MANT162♠♥A+1+0
-1.2Round 6NINGBOYONGGUAN232♥♦4+2-1
-1.2Round 15MOSCOW231N♥2-1-5
-1.3Round 11XIAMEN172N♣4-1-4
-1.4Round 5HUSSEIN-CHAGAS171N♠3-1-4
-1.5Round 7CHEN31N♣K-3+8
-1.5Round 12GERMANY SENIORS 1292♠♦K-1+0
-1.5Round 14HUBEIXINYI CLUB135♠♣K=+5
-1.7Round 3NANIWADA252♣♠2-3-2
-2.2Round 14HUBEIXINYI CLUB124♥♠3-1-5
-2.3Round 3NANIWADA234♠♥2+1+0
-2.3Round 10SII-06 STAR81♠♣J+2-6
-2.4Round 8MANT182♠♥3-1-4
-2.6Round 8MANT204♠♣2=+0
-2.7Round 5HUSSEIN-CHAGAS155♦♦J+1-11
-2.7Round 15MOSCOW274♥♦7-1-5
-3.1Round 6NINGBOYONGGUAN241N♠K+2-1
-3.1Round 9SHNT CLUB264♠♠J-1-6
-3.1Round 12GERMANY SENIORS 1283N♣A-3-7
-3.3Round 12GERMANY SENIORS 1236♦♠A-2-8
-3.4Round 8MANT123N♣10-2-6
-3.5Round 11XIAMEN143N♠4+2+14
-3.6Round 12GERMANY SENIORS 1223N♥A-1-5
-3.7Round 9SHNT CLUB213N♣7=-5
-3.7Round 14HUBEIXINYI CLUB204♠♦6+1-1
-4.2Round 3NANIWADA264♠♦Q=-8
-4.4Round 15MOSCOW256♠♥3-1-16
-4.5Round 3NANIWADA243N♠2-1-5
-4.6Round 13SHANGHAI KEJU44♠♥2+1+0
-4.7Round 11XIAMEN164♠♣9+1+0
-4.8Round 14HUBEIXINYI CLUB154♠♦A-2-3
-4.8Round 14HUBEIXINYI CLUB182♣♠A-1-9
-4.8Round 15MOSCOW304♥♠10=+2
-5.0Round 7CHEN85♥x♣A-2+0
-5.3Round 8MANT113N♥3-1-8
-5.9Round 15MOSCOW214♠♦4=-7
-7.0Round 5HUSSEIN-CHAGAS133N♥K+3-6
-7.7Round 13SHANGHAI KEJU87♠♠3-2-17
-8.0Round 12GERMANY SENIORS 1276♥♠A-2-13
-8.1Round 11XIAMEN154♠♠4+1-11
-9.7Round 3NANIWADA226♣♣4-1-12
-9.8Round 9SHNT CLUB304♠x♠J=-10
-18.2Round 13SHANGHAI KEJU26Nx♦6-5-19