🇸🇬 ZHANG Yukun · SINGAPORE

109rank
-93.9Butler · 240 bds
-0.39per board
±4.7swing
-0.12vs par /bd · #80/139
-0.31adjusted /bd
Butler per round: -5.8 29.9 -25 -2.2 0.8 -37.1 -15.2 10.4 -31.6 9.8 13.2 -30.2 -48 31.3 5.8by round

vs par split: bidding -0.13 · play +0.03

Strength of schedule: opponents averaged +0.09/bd (a tough draw) → opponent-adjusted -0.31/bd

Card play — on target: opening leads 75.9% #89 of 139 · declarer play 69.6% #112 of 139 · defence 83.9% #114 of 139

Card play by contract type — on target
vs NTvs a suit
Opening leads58.8% (17)82.9% (41)
Declarer play64.7% (17)71.8% (39)
Defence78.9% (38)86.2% (80)

Opening leads by suit led: ♠ 57.1% (14) · ♥ 82.4% (17) · ♦ 92.3% (13) · ♣ 71.4% (14)

vs par by strain: NT +1.67 (70) · a suit -0.83 (169)

vs par by level: part-score -0.41 (88) · game +0.23 (138) · slam -1.54 (13)

By role: declaring -0.53/bd (-2.34 vs par · 121) · defending -0.26/bd (+2.14 vs par · 119)

By vulnerability: vulnerable -0.19/bd (-0.57 vs par · 120) · not vulnerable -0.59/bd (+0.33 vs par · 120)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1K.FongJ.Pacareu – B.RoblesOpen16-5.8-0.36-1.25
Round 2K.FongA.Belkouch – M.DiniaOpen16+29.9+1.87+3.94
Round 4K.FongN.L'Ecuyer – Z.MarcinskiOpen16-25.0-1.56-3.00
Round 5K.FongM.Rahman – M.AhasanClosed16-2.2-0.14-0.75
Round 7K.FongJ.Kalita – M.NowosadzkiClosed16+0.8+0.05-2.00
Round 8K.FongJ.Roll – A.LevinClosed16-37.1-2.32-2.19
Round 9K.FongJ.Allerton – C.JaggerClosed16-15.2-0.95-0.94
Round 10K.FongN.Kirubakaramoorthy – U.GuptaClosed16+10.4+0.65+2.81
Round 11K.FongE.Rodwell – J.MeckstrothClosed16-31.6-1.98-2.69
Round 14K.FongB.Nab – B.DrijverClosed16+9.8+0.61+2.81
Round 15K.FongM.Krasnosselski – S.OrlovOpen16+13.2+0.82+0.19
Round 17K.FongS.Hult – S.EkenbergClosed16-30.2-1.89-1.56
Round 18K.FongA.Versace – L.LauriaOpen16-48.0-3.00-2.25
Round 19K.FongJ.George – R.ParasianClosed16+31.3+1.96+2.75
Round 20K.FongM.Whibley – M.BrownClosed16+5.8+0.36+2.38

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
+10.5Round 17🇸🇪 SWEDEN113♣x♦A=+12
+10.1Round 2🇲🇦 MOROCCO233♦♠8-1+12
+9.7Round 14🇳🇱 NETHERLANDS303NTx♣10=+10
+9.2Round 1🇨🇱 CHILE106♦♣2-1+13
+9.2Round 2🇲🇦 MOROCCO293♥♥J+2+10
+9.0Round 14🇳🇱 NETHERLANDS314♥♣K-1+10
+9.0Round 20🇳🇿 NEW ZEALAND234♠♥K-1+12
+8.8Round 11🇺🇸 USA 1125♣♥K-5+15
+8.7Round 19🇮🇩 INDONESIA73NT♣J=+3
+8.6Round 2🇲🇦 MOROCCO174♠x♦6-1+9
+8.3Round 2🇲🇦 MOROCCO273♦♦2-2+11
+8.2Round 7🇵🇱 POLAND104♥♦K+2+2
+7.8Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND96♦♥5-1+11
+7.8Round 10🇮🇳 INDIA294♠♦8=+10
+7.7Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND165♦♣8+2+10
+7.7Round 20🇳🇿 NEW ZEALAND194♥♦5-1+10
+7.6Round 19🇮🇩 INDONESIA44♥♣4=+0
+7.5Round 20🇳🇿 NEW ZEALAND225♣♥2-1+14
+6.9Round 10🇮🇳 INDIA232♥♠2-3+8
+6.8Round 15🇷🇺 RUSSIA133NT♦2=+0
+6.8Round 17🇸🇪 SWEDEN84♥x♣K=+12
+6.7Round 5🇧🇩 BANGLADESH33NT♠J+1+4
+6.7Round 10🇮🇳 INDIA263♠♣2+2+9
+6.6Round 5🇧🇩 BANGLADESH126♠♣5=+0
+6.6Round 11🇺🇸 USA 167♠♠3=+0
+6.4Round 5🇧🇩 BANGLADESH143NT♥10=+6
+6.4Round 15🇷🇺 RUSSIA22♠x♦K-2+8
+6.3Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND103♦♥6=+6
+6.0Round 10🇮🇳 INDIA276♥♣K=+0
+6.0Round 19🇮🇩 INDONESIA124♠♥6-1+5
+5.9Round 11🇺🇸 USA 1113♥♣4-3+6
+5.7Round 2🇲🇦 MOROCCO285♥♦2+1+13
+5.7Round 4🇨🇦 CANADA283NT♥Q+1+7
+5.6Round 14🇳🇱 NETHERLANDS232NT♥Q=+10
+5.2Round 15🇷🇺 RUSSIA42♠♣Q=+6
+4.7Round 7🇵🇱 POLAND92NT♦A+3+9
+4.3Round 15🇷🇺 RUSSIA93♦♥Q-1+8
+4.3Round 19🇮🇩 INDONESIA33NT♥J+3+17
+4.1Round 7🇵🇱 POLAND123♥♣9=-10
+4.1Round 15🇷🇺 RUSSIA34♥♠2=+0
+4.0Round 7🇵🇱 POLAND163NT♣2+2+1
+4.0Round 8🇮🇱 ISRAEL213♥♠A-1+6
+3.8Round 11🇺🇸 USA 182♠♣9+1+0
+3.6Round 2🇲🇦 MOROCCO206♦♣2+1+13
+3.6Round 10🇮🇳 INDIA305♥x♠8-1+0
+3.4Round 14🇳🇱 NETHERLANDS173♠♣4-2+5
+3.3Round 5🇧🇩 BANGLADESH42♠♥3=+6
+3.2Round 17🇸🇪 SWEDEN53NT♦7-2+13
+3.0Round 7🇵🇱 POLAND143NT♥7=+0
+3.0Round 19🇮🇩 INDONESIA83NT♣5-1+5
+3.0Round 19🇮🇩 INDONESIA104♥♦10-2+8
+2.9Round 5🇧🇩 BANGLADESH113NT♥3-2+5
+2.8Round 15🇷🇺 RUSSIA73♣♠J+1+0
+2.7Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND124♠♣A-2+5
+2.7Round 18🇮🇹 ITALY225♣x♥3-1+5
+2.4Round 1🇨🇱 CHILE74♥♣Q+1+0
+2.4Round 15🇷🇺 RUSSIA12♠♠2-4-6
+2.3Round 1🇨🇱 CHILE133NT♦Q+3+17
+2.3Round 1🇨🇱 CHILE143NT♥2-1+10
+2.2Round 8🇮🇱 ISRAEL224♥♦6-2+6
+2.2Round 14🇳🇱 NETHERLANDS254♠♦2-1+6
+2.1Round 1🇨🇱 CHILE114♠♥J-1-2
+2.0Round 2🇲🇦 MOROCCO321NT♣A=-1
+2.0Round 4🇨🇦 CANADA314♥♦10+1+0
+2.0Round 8🇮🇱 ISRAEL243NT♠4+3+10
+2.0Round 17🇸🇪 SWEDEN62♦♦4+1+7
+2.0Round 20🇳🇿 NEW ZEALAND175♦x♥K-3+2
+1.9Round 20🇳🇿 NEW ZEALAND285♠♦K+1+12
+1.8Round 5🇧🇩 BANGLADESH53NT♦3=-1
+1.8Round 19🇮🇩 INDONESIA13NT♠8+3+2
+1.8Round 20🇳🇿 NEW ZEALAND244♥♦K-2+5
+1.7Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND33NT♥8=+0
+1.7Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND154♠x♦J-1+8
+1.7Round 10🇮🇳 INDIA314♠♥9-1+5
+1.6Round 19🇮🇩 INDONESIA161NT♥Q+1+0
+1.4Round 4🇨🇦 CANADA261NT♣4+2+6
+1.4Round 15🇷🇺 RUSSIA164♣♠4-2+0
+1.4Round 20🇳🇿 NEW ZEALAND324♠♣K-1+5
+1.3Round 5🇧🇩 BANGLADESH63♣♦7=+0
+1.3Round 14🇳🇱 NETHERLANDS221NTx♣2-1+11
+1.2Round 2🇲🇦 MOROCCO302♥♥4-2+7
+1.2Round 19🇮🇩 INDONESIA63♣♦8=+0
+1.0Round 10🇮🇳 INDIA253NT♥2+1+0
+0.8Round 5🇧🇩 BANGLADESH162♠♦J+1+1
+0.8Round 7🇵🇱 POLAND113NT♠5-1+5
+0.7Round 17🇸🇪 SWEDEN33♣♠K-1-2
+0.7Round 18🇮🇹 ITALY274♥♦4+1+0
+0.6Round 2🇲🇦 MOROCCO193NT♠6=+0
+0.5Round 7🇵🇱 POLAND83♥♦A-1-2
+0.5Round 8🇮🇱 ISRAEL303NT♥3+2+1
+0.5Round 19🇮🇩 INDONESIA21NT♦6-1-2
+0.5Round 19🇮🇩 INDONESIA94♣♦K-1+2
+0.5Round 20🇳🇿 NEW ZEALAND213NT♥3=+0
+0.4Round 10🇮🇳 INDIA283NT♠8+1+10
+0.4Round 11🇺🇸 USA 1163NT♦4=+0
+0.4Round 14🇳🇱 NETHERLANDS283NT♥4=-2
+0.4Round 17🇸🇪 SWEDEN73NT♥5+3+1
+0.3Round 1🇨🇱 CHILE23NT♠10+1+1
+0.3Round 10🇮🇳 INDIA174♥♣9=+0
+0.3Round 15🇷🇺 RUSSIA82NT♦K-1+4
+0.2Round 14🇳🇱 NETHERLANDS324♠♦A+1+0
+0.1Round 19🇮🇩 INDONESIA54♠♣3=+0
+0.1Round 19🇮🇩 INDONESIA114♠♣Q=+0
+0.1Round 20🇳🇿 NEW ZEALAND292♥♥3+1-10
+0.1Round 20🇳🇿 NEW ZEALAND304♥♠A+1+0
-0.0Round 4🇨🇦 CANADA252♣x♠Q-4-12
-0.0Round 4🇨🇦 CANADA303NT♥4+2-11
-0.0Round 8🇮🇱 ISRAEL204♠♥Q+1+1
-0.0Round 8🇮🇱 ISRAEL323NT♠5+1+0
-0.0Round 10🇮🇳 INDIA184♦♣A-1-5
-0.0Round 15🇷🇺 RUSSIA56♠♣A=+0
-0.1Round 2🇲🇦 MOROCCO254♠♥5-1+5
-0.1Round 4🇨🇦 CANADA234♥♦K=-13
-0.2Round 15🇷🇺 RUSSIA152♥♣Q+2-1
-0.3Round 1🇨🇱 CHILE91NT♥2=+1
-0.3Round 2🇲🇦 MOROCCO244♠♣J+1+0
-0.3Round 4🇨🇦 CANADA273♣♠K-1-2
-0.3Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND84♠♥2+1+0
-0.3Round 18🇮🇹 ITALY252♣♠A=-2
-0.4Round 7🇵🇱 POLAND53♠♦2-1-10
-0.4Round 10🇮🇳 INDIA213NT♥5+3+11
-0.4Round 14🇳🇱 NETHERLANDS262♠x♣A-2-3
-0.4Round 14🇳🇱 NETHERLANDS293NT♦8+1-1
-0.4Round 20🇳🇿 NEW ZEALAND182♦♦9=-5
-0.5Round 1🇨🇱 CHILE151NT♠2-1+2
-0.5Round 2🇲🇦 MOROCCO263NT♥3+1-1
-0.5Round 14🇳🇱 NETHERLANDS203♥♦Q+1+1
-0.6Round 4🇨🇦 CANADA225♦♠A-1+5
-0.6Round 5🇧🇩 BANGLADESH94♠♦A+1-1
-0.6Round 14🇳🇱 NETHERLANDS214♠♠8=+0
-0.7Round 1🇨🇱 CHILE65♦♠Q-1-6
-0.7Round 4🇨🇦 CANADA324♠♥5=+0
-0.8Round 1🇨🇱 CHILE34♠♥5+3-12
-0.9Round 1🇨🇱 CHILE44♥♣J+1-13
-1.0Round 4🇨🇦 CANADA193♠♥7-1+8
-1.0Round 5🇧🇩 BANGLADESH84♠♣10=+0
-1.0Round 5🇧🇩 BANGLADESH102♠♥K+2-10
-1.0Round 8🇮🇱 ISRAEL272♠♥5-2+0
-1.0Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND12♠♠Q-2+1
-1.0Round 18🇮🇹 ITALY184♥♣Q+1+0
-1.0Round 20🇳🇿 NEW ZEALAND311NT♥10+1+0
-1.1Round 11🇺🇸 USA 1155♦♠7+1-14
-1.2Round 4🇨🇦 CANADA204♠♥3+2-1
-1.2Round 8🇮🇱 ISRAEL234♥♣6+2-13
-1.2Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND113♥♣5-1+2
-1.3Round 1🇨🇱 CHILE13♦♣A+1-7
-1.3Round 7🇵🇱 POLAND154♠♥10+1+0
-1.3Round 19🇮🇩 INDONESIA143NT♠K+4+14
-1.4Round 7🇵🇱 POLAND14♠♣A-2+1
-1.4Round 7🇵🇱 POLAND43♣♥A-1-6
-1.4Round 18🇮🇹 ITALY231NT♣J+2-1
-1.5Round 15🇷🇺 RUSSIA10Pass-4
-1.5Round 18🇮🇹 ITALY204♠♣Q+1+0
-1.6Round 2🇲🇦 MOROCCO223NT♥9=+0
-1.6Round 7🇵🇱 POLAND73♥♦K=+0
-1.6Round 19🇮🇩 INDONESIA152♠♣4-2-3
-1.8Round 18🇮🇹 ITALY193NT♥7+1-1
-1.9Round 8🇮🇱 ISRAEL253NT♥9+1+0
-1.9Round 17🇸🇪 SWEDEN144♥♠Q+1+0
-2.0Round 1🇨🇱 CHILE52♠♦Q+1-1
-2.0Round 15🇷🇺 RUSSIA113NT♥4+3+11
-2.1Round 17🇸🇪 SWEDEN93NT♠4+1-1
-2.2Round 14🇳🇱 NETHERLANDS272♥♥10-2+1
-2.3Round 5🇧🇩 BANGLADESH72♥♦3+1+0
-2.3Round 18🇮🇹 ITALY284♥♥5=+1
-2.4Round 18🇮🇹 ITALY263NT♦K-2-8
-2.6Round 5🇧🇩 BANGLADESH23NT♥2-2-6
-2.6Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND56♠♦8+1-11
-2.6Round 11🇺🇸 USA 124♥♣A-2-6
-2.6Round 11🇺🇸 USA 151NT♣8-4+9
-2.6Round 18🇮🇹 ITALY172♥♣2=+1
-2.7Round 4🇨🇦 CANADA243♠♥9-3-4
-2.9Round 8🇮🇱 ISRAEL316NT♠9+1-1
-3.0Round 1🇨🇱 CHILE122♥♦2=-6
-3.0Round 15🇷🇺 RUSSIA121NT♥9=-5
-3.1Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND24♠♠3+3-10
-3.1Round 11🇺🇸 USA 1142♠♣3+1-6
-3.1Round 18🇮🇹 ITALY314♥♦3=+0
-3.2Round 18🇮🇹 ITALY322♠♠5+1-1
-3.3Round 10🇮🇳 INDIA197NT♣7=+0
-3.4Round 4🇨🇦 CANADA173♣♦Q+1+0
-3.4Round 7🇵🇱 POLAND62♠♦4-1-5
-3.5Round 17🇸🇪 SWEDEN23NT♥8-3-7
-3.7Round 10🇮🇳 INDIA321NT♥3-1-5
-3.7Round 17🇸🇪 SWEDEN12♣♠A-3-6
-3.8Round 2🇲🇦 MOROCCO183NT♠2-2-6
-3.8Round 11🇺🇸 USA 1133♠♣K-1-12
-3.9Round 8🇮🇱 ISRAEL263♦♠A-1-1
-3.9Round 10🇮🇳 INDIA202♥♠5+1+0
-4.0Round 4🇨🇦 CANADA212NT♠6+1-7
-4.0Round 14🇳🇱 NETHERLANDS243NT♠9=+0
-4.0Round 15🇷🇺 RUSSIA145♦x♥Q-1-6
-4.1Round 8🇮🇱 ISRAEL182♣♠A+1+0
-4.1Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND64♠♥3-1-6
-4.1Round 10🇮🇳 INDIA223♦♠8-1+2
-4.2Round 17🇸🇪 SWEDEN164♥♦10-1-12
-4.2Round 19🇮🇩 INDONESIA133NT♥3-2-7
-4.4Round 7🇵🇱 POLAND23♥♣J+1-10
-4.6Round 7🇵🇱 POLAND135♦x♠2-1-8
-4.7Round 8🇮🇱 ISRAEL284♠♥K=-3
-4.8Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND142♦♠3=-8
-4.8Round 20🇳🇿 NEW ZEALAND203NT♠6+1-1
-5.4Round 5🇧🇩 BANGLADESH134♠♦9-1-6
-5.4Round 11🇺🇸 USA 195♣x♠K-2-2
-5.4Round 18🇮🇹 ITALY293NT♣7+2+0
-5.5Round 17🇸🇪 SWEDEN104♥♠2+2-13
-5.5Round 20🇳🇿 NEW ZEALAND254♠♦2=-6
-5.9Round 11🇺🇸 USA 172♣♥8+1+0
-6.0Round 7🇵🇱 POLAND34♠♣10=+1
-6.3Round 17🇸🇪 SWEDEN154♥♦Q+1-14
-6.4Round 2🇲🇦 MOROCCO315♣x♠K-2-5
-6.4Round 11🇺🇸 USA 135♣♦10=+0
-6.5Round 17🇸🇪 SWEDEN42♠♣A-2-2
-6.7Round 2🇲🇦 MOROCCO214♠x♦A-2-4
-6.7Round 11🇺🇸 USA 143♥♣Q-2-13
-6.8Round 14🇳🇱 NETHERLANDS193NT♦2-5-4
-6.8Round 20🇳🇿 NEW ZEALAND275♥♣K+1-1
-7.0Round 18🇮🇹 ITALY214♥♣2-3-9
-7.1Round 14🇳🇱 NETHERLANDS185♣♦10+1+1
-7.3Round 1🇨🇱 CHILE164♠♣A=+0
-7.5Round 11🇺🇸 USA 1103♠♥9=-8
-7.6Round 1🇨🇱 CHILE86♣♦Q-1-17
-7.7Round 20🇳🇿 NEW ZEALAND262♠♥A-1+1
-7.9Round 4🇨🇦 CANADA294♥♣2-1-13
-8.1Round 8🇮🇱 ISRAEL173NT♥K=-7
-8.4Round 8🇮🇱 ISRAEL194♠♠7+3-17
-8.5Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND44♠♥6+3-17
-8.5Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND75♦♣A=+1
-8.6Round 10🇮🇳 INDIA243NT♦3=+0
-9.0Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND135♠♦K-1-7
-9.1Round 5🇧🇩 BANGLADESH156♥♥7-1-11
-9.2Round 18🇮🇹 ITALY302♥x♣J=-11
-9.6Round 8🇮🇱 ISRAEL296♦♥9-1-17
-9.7Round 17🇸🇪 SWEDEN123NT♥Q+1-1
-9.8Round 15🇷🇺 RUSSIA63NTxx♠9=-12
-10.0Round 5🇧🇩 BANGLADESH14♥♣7=+1
-10.2Round 18🇮🇹 ITALY244♥♦2-1-10
-10.4Round 17🇸🇪 SWEDEN133♦x♣K-3-12
-12.0Round 11🇺🇸 USA 112♣xx♥A-2-12
-12.2Round 4🇨🇦 CANADA185♥♠Q=-11