🇸🇬 ZHANG Yukun · SINGAPORE

115rank
-125.3Butler · 224 bds
-0.56per board
±4.2swing
-0.56vs par /bd · #105/130
-0.45adjusted /bd
Butler per round: 8.4 16.6 -11.9 -1.7 -38 -39.8 8 -44.3 5.7 13.7 -16.5 6.2 -17.3 -14.4by round

vs par split: bidding -0.42 · play -0.14

Strength of schedule: opponents averaged +0.11/bd (a tough draw) → opponent-adjusted -0.45/bd

Card play — on target: opening leads 69.6% #125 of 130 · declarer play 66.7% #115 of 130 · defence 84.2% #101 of 130

Card play by contract type — on target
vs NTvs a suit
Opening leads70.6% (17)69.2% (39)
Declarer play82.4% (17)60.5% (43)
Defence87.9% (33)82.7% (81)

Opening leads by suit led: ♠ 61.5% (13) · ♥ 80.0% (15) · ♦ 61.5% (13) · ♣ 73.3% (15)

vs par by strain: NT -0.17 (65) · a suit -0.72 (159)

vs par by level: part-score -0.69 (85) · game -0.11 (120) · slam -2.84 (19)

By role: declaring -0.60/bd (-2.43 vs par · 110) · defending -0.52/bd (+1.24 vs par · 114)

By vulnerability: vulnerable +0.02/bd (+0.04 vs par · 112) · not vulnerable -1.14/bd (-1.17 vs par · 112)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 2K.FongW.El Ahmady – T.SadekClosed16+8.4+0.53-0.56
Round 3K.FongK.Martens – K.JassemClosed16+16.6+1.04+3.69
Round 4K.FongM.Caracci – J.RoblesClosed16-11.9-0.74-2.19
Round 6K.FongJ.Rayner – M.RocheClosed16-1.7-0.11+0.88
Round 8K.FongJ.Verhees – R.Van ProoijenClosed16-38.0-2.38-3.50
Round 9K.FongN.Eber – C.BosenbergClosed16-39.8-2.49-3.19
Round 10K.FongA.Jorgensen – B.EinarssonClosed16+8.0+0.50-0.62
Round 11K.FongJ.Li – J.LiuClosed16-44.3-2.77-3.00
Round 14K.FongK.Bathurst – D.ZagorinClosed16+5.7+0.36+0.44
Round 15K.FongA.Versace – L.LauriaOpen16+13.7+0.86+2.06
Round 16K.FongS.Vaidya – A.GoelOpen16-16.5-1.03-0.62
Round 17K.FongA.Bach – M.CornellOpen16+6.2+0.39+0.38
Round 20K.FongO.Herbst – I.HerbstClosed16-17.3-1.08-0.69
Round 21K.FongT.Teramoto – T.ImakuraOpen16-14.4-0.90-0.94

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
+12.5Round 14🇺🇸 USA 2274♠x♦J-4+12
+11.4Round 17🇳🇿 NEW ZEALAND135♥x♠2-3+12
+8.8Round 15🇮🇹 ITALY165♥x♠2=+13
+8.1Round 3🇵🇱 POLAND104♥x♣J-2+12
+8.0Round 3🇵🇱 POLAND43NT♠7+1+12
+7.5Round 21🇯🇵 JAPAN63NT♥4+1+11
+7.0Round 6🇨🇦 CANADA203♣x♣2-2+12
+6.8Round 14🇺🇸 USA 2203♥♥5+2+10
+6.6Round 2🇪🇬 EGYPT225♣x♠A-2+5
+6.2Round 2🇪🇬 EGYPT303NT♥4+1+4
+6.2Round 10🇮🇸 ICELAND263NT♠2=-1
+6.2Round 14🇺🇸 USA 2293♥x♠K-1+10
+5.8Round 4🇨🇱 CHILE276♦♣A=-2
+5.7Round 10🇮🇸 ICELAND204♠♦10=+13
+5.6Round 17🇳🇿 NEW ZEALAND115♦x♠K=+6
+5.6Round 21🇯🇵 JAPAN133NT♦Q-2+8
+5.5Round 4🇨🇱 CHILE196♥x♦A-3+12
+5.4Round 3🇵🇱 POLAND114♥x♠7-2+5
+5.3Round 10🇮🇸 ICELAND215♦x♥Q=+4
+5.3Round 20🇮🇱 ISRAEL315♦♠A-2+7
+5.1Round 20🇮🇱 ISRAEL261NT♣4=+11
+5.0Round 2🇪🇬 EGYPT204♥♣K+1+4
+4.5Round 20🇮🇱 ISRAEL285♠x♣A=+10
+4.4Round 14🇺🇸 USA 2193♣♥10-1+10
+4.3Round 3🇵🇱 POLAND64♠♥Q=+10
+4.3Round 17🇳🇿 NEW ZEALAND142NT♥2=+5
+4.1Round 4🇨🇱 CHILE283NT♣3-2+5
+4.0Round 8🇳🇱 NETHERLANDS211NT♦3=+5
+4.0Round 15🇮🇹 ITALY54♥♦2=+3
+3.9Round 4🇨🇱 CHILE252♦♣10+2+1
+3.9Round 10🇮🇸 ICELAND323♣♦7=-1
+3.8Round 16🇮🇳 INDIA285♣♥J=+0
+3.6Round 11🇨🇳 CHINA52NT♦8-1+5
+3.4Round 6🇨🇦 CANADA314♠♥2+1+8
+3.4Round 15🇮🇹 ITALY123NT♥7+1+11
+3.3Round 16🇮🇳 INDIA251NT♠J-2+0
+3.2Round 20🇮🇱 ISRAEL253NT♠2-3+2
+3.1Round 11🇨🇳 CHINA164♥♣4+3+10
+2.9Round 14🇺🇸 USA 2305♥x♠A-2+4
+2.9Round 16🇮🇳 INDIA184♠♥K-3+9
+2.9Round 20🇮🇱 ISRAEL224♠♣7=+10
+2.8Round 20🇮🇱 ISRAEL273NT♦4-1+4
+2.7Round 8🇳🇱 NETHERLANDS253NT♣K=+0
+2.6Round 15🇮🇹 ITALY64NT♥K+1+0
+2.6Round 17🇳🇿 NEW ZEALAND123NT♥Q-1+10
+2.5Round 4🇨🇱 CHILE204♥♦2=-1
+2.5Round 9🇿🇦 SOUTH AFRICA94♠♦J-2+13
+2.5Round 17🇳🇿 NEW ZEALAND103♥♣6-1+0
+2.5Round 17🇳🇿 NEW ZEALAND151NT♥7=+5
+2.4Round 3🇵🇱 POLAND73♠♣A+1+1
+2.4Round 10🇮🇸 ICELAND192♠♥4-1+4
+2.3Round 4🇨🇱 CHILE173NT♠6+3-11
+2.1Round 16🇮🇳 INDIA232♠♥A+1+0
+2.0Round 8🇳🇱 NETHERLANDS223NT♠2=+2
+2.0Round 21🇯🇵 JAPAN113♥♣5=+0
+1.9Round 3🇵🇱 POLAND164♠♦5=+3
+1.9Round 10🇮🇸 ICELAND302♦♠4+2+5
+1.8Round 3🇵🇱 POLAND22♦♦6=+5
+1.8Round 10🇮🇸 ICELAND293NT♦7=-1
+1.8Round 16🇮🇳 INDIA292♠♣2-1+5
+1.7Round 15🇮🇹 ITALY82♠♣5-1+4
+1.6Round 9🇿🇦 SOUTH AFRICA143♥♦10=+0
+1.5Round 21🇯🇵 JAPAN91NT♥3+2-8
+1.4Round 3🇵🇱 POLAND132♦♣6-1+6
+1.4Round 15🇮🇹 ITALY15♦♠Q-2+0
+1.4Round 17🇳🇿 NEW ZEALAND85♣♦3+1+11
+1.3Round 8🇳🇱 NETHERLANDS196♠x♥K-2-5
+1.2Round 10🇮🇸 ICELAND282♥♦A+1+8
+1.2Round 21🇯🇵 JAPAN45♠x♥K-2+0
+1.1Round 2🇪🇬 EGYPT272♠♥A=-1
+1.0Round 6🇨🇦 CANADA303♣♣6+1+5
+1.0Round 14🇺🇸 USA 2314♥♠Q=+0
+1.0Round 15🇮🇹 ITALY155♥♠7=+4
+0.9Round 6🇨🇦 CANADA283NT♥5=+0
+0.9Round 8🇳🇱 NETHERLANDS282♠♥Q+1+0
+0.9Round 14🇺🇸 USA 2174♠♥Q+2-11
+0.9Round 15🇮🇹 ITALY43NT♥K-1+6
+0.8Round 14🇺🇸 USA 2253♣♥K-1-2
+0.8Round 17🇳🇿 NEW ZEALAND21NT♥6=+0
+0.7Round 6🇨🇦 CANADA184♥♠10+1+0
+0.7Round 11🇨🇳 CHINA83♠♣A+1+1
+0.7Round 21🇯🇵 JAPAN34♥♥9=-1
+0.6Round 3🇵🇱 POLAND56♣♦2+1+13
+0.6Round 3🇵🇱 POLAND153NT♦9+1+0
+0.5Round 21🇯🇵 JAPAN86♠♠2=+0
+0.4Round 2🇪🇬 EGYPT294♥♣A+1+0
+0.4Round 6🇨🇦 CANADA263NT♥J+3+13
+0.4Round 8🇳🇱 NETHERLANDS312♥♦A=-1
+0.3Round 4🇨🇱 CHILE294♠♥J+2-13
+0.3Round 6🇨🇦 CANADA294♠♦5=-10
+0.3Round 11🇨🇳 CHINA74♥♣9+1+0
+0.3Round 16🇮🇳 INDIA194♠♣2=+1
+0.2Round 4🇨🇱 CHILE314♠♣A=+0
+0.2Round 16🇮🇳 INDIA324♠♦J+1+0
+0.1Round 4🇨🇱 CHILE261NT♦K=+2
+0.1Round 11🇨🇳 CHINA41♠♥3+2+0
+0.0Round 2🇪🇬 EGYPT313♦♣7+1+0
+0.0Round 3🇵🇱 POLAND34♥♠2-1+5
+0.0Round 6🇨🇦 CANADA194♠♣J=-1
+0.0Round 15🇮🇹 ITALY74♥♣5=-3
+0.0Round 16🇮🇳 INDIA314♠♣A+1+0
-0.0Round 21🇯🇵 JAPAN143NT♠J+2+0
-0.1Round 2🇪🇬 EGYPT173NT♣9-1-4
-0.1Round 3🇵🇱 POLAND14♠♣K-1-2
-0.1Round 3🇵🇱 POLAND142♠♣K-2+1
-0.1Round 15🇮🇹 ITALY113NT♥K+2+0
-0.1Round 17🇳🇿 NEW ZEALAND55♦♥9=+2
-0.1Round 21🇯🇵 JAPAN54♠♣Q+1-11
-0.2Round 6🇨🇦 CANADA236♠♦5=+0
-0.3Round 2🇪🇬 EGYPT324♠♥A=+0
-0.3Round 9🇿🇦 SOUTH AFRICA24♠♥2=+0
-0.3Round 14🇺🇸 USA 2181NT♣6=-2
-0.4Round 2🇪🇬 EGYPT244♥♠3+1+0
-0.4Round 9🇿🇦 SOUTH AFRICA153NT♦10+1-1
-0.4Round 11🇨🇳 CHINA112♦x♣8-1+1
-0.4Round 21🇯🇵 JAPAN163NT♠K+2+0
-0.5Round 2🇪🇬 EGYPT234♠♣K=-1
-0.5Round 11🇨🇳 CHINA93NT♦Q+3+11
-0.6Round 2🇪🇬 EGYPT283NT♣2+2-1
-0.6Round 9🇿🇦 SOUTH AFRICA33NT♦J=+1
-0.6Round 10🇮🇸 ICELAND243♠♣Q+1-1
-0.6Round 10🇮🇸 ICELAND273NT♦5+1+0
-0.6Round 14🇺🇸 USA 2281NT♦A-2+1
-0.6Round 15🇮🇹 ITALY33NT♠A=-2
-0.7Round 2🇪🇬 EGYPT194♠♥K=+0
-0.7Round 3🇵🇱 POLAND123NT♥5=+0
-0.8Round 4🇨🇱 CHILE233♥♠Q=+0
-0.8Round 4🇨🇱 CHILE244♠♥4+1+0
-0.8Round 6🇨🇦 CANADA252♠♠4=-1
-0.8Round 20🇮🇱 ISRAEL213NT♦3+3-1
-0.9Round 10🇮🇸 ICELAND173♣♣K=-7
-0.9Round 15🇮🇹 ITALY91NT♦3+1-1
-0.9Round 17🇳🇿 NEW ZEALAND14♥♦8+2-2
-1.0Round 8🇳🇱 NETHERLANDS233NT♣9+2+0
-1.0Round 20🇮🇱 ISRAEL202♠♦A+1+0
-1.1Round 9🇿🇦 SOUTH AFRICA73NT♠Q=-10
-1.1Round 14🇺🇸 USA 2222♥♥5=+1
-1.1Round 14🇺🇸 USA 2323♣♥J-2+6
-1.2Round 6🇨🇦 CANADA222♥♦Q+2-1
-1.2Round 16🇮🇳 INDIA202♠♥8+1+10
-1.3Round 15🇮🇹 ITALY143♠♥A=-1
-1.4Round 2🇪🇬 EGYPT266♥♣A=-1
-1.4Round 8🇳🇱 NETHERLANDS276♥♦Q+1-11
-1.4Round 10🇮🇸 ICELAND184♠♥J=+0
-1.4Round 10🇮🇸 ICELAND225♦♠K-1-15
-1.5Round 2🇪🇬 EGYPT213♥♣K-1-4
-1.8Round 6🇨🇦 CANADA242♠♦K=-5
-1.8Round 6🇨🇦 CANADA273NT♦5+3+11
-1.8Round 11🇨🇳 CHINA133♠♦2=-6
-1.8Round 16🇮🇳 INDIA176♥♠2=+11
-1.8Round 20🇮🇱 ISRAEL301♠♣4=-5
-2.0Round 2🇪🇬 EGYPT253♣♠A-3-10
-2.0Round 15🇮🇹 ITALY134♠♣J-1+1
-2.0Round 17🇳🇿 NEW ZEALAND32♥♠7-2-5
-2.1Round 11🇨🇳 CHINA64♠♠3=-7
-2.3Round 8🇳🇱 NETHERLANDS183NT♥J+3-2
-2.3Round 9🇿🇦 SOUTH AFRICA53♥♣4=+0
-2.3Round 15🇮🇹 ITALY102♣♠Q+2+0
-2.3Round 16🇮🇳 INDIA243♣♠Q-1+2
-2.4Round 17🇳🇿 NEW ZEALAND44♥♥8+1-4
-2.4Round 21🇯🇵 JAPAN153♠♣A-1+2
-2.5Round 4🇨🇱 CHILE323NT♦6=+1
-2.6Round 17🇳🇿 NEW ZEALAND63♣♠A-1-5
-2.7Round 9🇿🇦 SOUTH AFRICA83NT♦2+1+1
-2.8Round 6🇨🇦 CANADA173NT♣5-1-5
-2.8Round 8🇳🇱 NETHERLANDS261NT♠10+1+0
-2.9Round 6🇨🇦 CANADA214♦♣Q+1-1
-2.9Round 15🇮🇹 ITALY22♥♣2-1-2
-3.0Round 16🇮🇳 INDIA223NT♠K=-13
-3.0Round 20🇮🇱 ISRAEL194NT♠2+1-1
-3.1Round 8🇳🇱 NETHERLANDS303♦♠3+1+0
-3.1Round 16🇮🇳 INDIA212♠♥K+1-11
-3.1Round 17🇳🇿 NEW ZEALAND71NT♦5-2-8
-3.1Round 20🇮🇱 ISRAEL292♠♣A-1-5
-3.2Round 9🇿🇦 SOUTH AFRICA113NT♥Q+2-1
-3.3Round 8🇳🇱 NETHERLANDS244♥♦Q=+0
-3.4Round 2🇪🇬 EGYPT183♣♣4+1+0
-3.4Round 9🇿🇦 SOUTH AFRICA103NT♠2+3-13
-3.7Round 9🇿🇦 SOUTH AFRICA44♦♠3-1-5
-3.7Round 21🇯🇵 JAPAN72♠♣4+1+0
-3.8Round 14🇺🇸 USA 2232♠♦J+1-7
-3.8Round 21🇯🇵 JAPAN123♦♥Q=+0
-3.9Round 6🇨🇦 CANADA325♦♥Q+1-11
-3.9Round 9🇿🇦 SOUTH AFRICA13♥♦3-1-4
-3.9Round 16🇮🇳 INDIA266♠♦4=+0
-4.0Round 20🇮🇱 ISRAEL183♠x♣J-1-5
-4.2Round 11🇨🇳 CHINA124♥♠J-1-5
-4.2Round 11🇨🇳 CHINA144♠♥K-1-4
-4.3Round 11🇨🇳 CHINA33NT♥3-1-12
-4.4Round 9🇿🇦 SOUTH AFRICA123♠♣J-1-12
-4.6Round 9🇿🇦 SOUTH AFRICA162♥♠5-4-8
-4.7Round 3🇵🇱 POLAND86♥♦Q=+0
-4.7Round 4🇨🇱 CHILE212♠♣Q-1-5
-4.7Round 10🇮🇸 ICELAND232♥♣K+1-7
-5.2Round 11🇨🇳 CHINA153♥♣J+1-7
-5.2Round 14🇺🇸 USA 2263♦♣A-2-7
-5.3Round 4🇨🇱 CHILE184♥♠J+1-1
-5.4Round 8🇳🇱 NETHERLANDS292NT♥Q-1-5
-5.4Round 10🇮🇸 ICELAND253♠♠2-1-10
-5.4Round 10🇮🇸 ICELAND314♥♣J+1-1
-5.4Round 20🇮🇱 ISRAEL325♣x♥9=-4
-5.8Round 16🇮🇳 INDIA274NTx♦9-2-10
-6.1Round 21🇯🇵 JAPAN13NT♣Q=-6
-6.6Round 9🇿🇦 SOUTH AFRICA66♥♣5=+0
-6.6Round 17🇳🇿 NEW ZEALAND93NT♠7-1-10
-6.7Round 9🇿🇦 SOUTH AFRICA136♥♦2-1-12
-6.9Round 8🇳🇱 NETHERLANDS204♥♠5-1-12
-6.9Round 20🇮🇱 ISRAEL176♦x♠8-1-11
-7.2Round 17🇳🇿 NEW ZEALAND163NT♦Q+3-11
-7.3Round 20🇮🇱 ISRAEL243NT♦6-2-11
-7.6Round 11🇨🇳 CHINA16♥♠A=-11
-7.8Round 20🇮🇱 ISRAEL235♥♠3-1-12
-8.2Round 21🇯🇵 JAPAN26NT♠10=+0
-8.5Round 14🇺🇸 USA 2243NT♥3=-7
-8.7Round 21🇯🇵 JAPAN105♦♥4=-10
-8.8Round 4🇨🇱 CHILE305♦♣A-2-11
-9.2Round 14🇺🇸 USA 2216♥♣A-2-11
-9.4Round 8🇳🇱 NETHERLANDS174♥x♦2-3-12
-9.8Round 16🇮🇳 INDIA307♣♥K-2-14
-10.0Round 11🇨🇳 CHINA104♠♦J=-10
-11.8Round 11🇨🇳 CHINA24♠x♥A-3-14
-12.3Round 3🇵🇱 POLAND93♦x♦Q-4-12
-13.7Round 4🇨🇱 CHILE226♥♦J+1-12
-13.7Round 8🇳🇱 NETHERLANDS322♠x♥A=-15