🇯🇵 CHEN Dawei · JAPAN

62rank
+0.9Butler · 240 bds
+0.00per board
±4.2swing
+0.06vs par /bd · #51/125
+0.01adjusted /bd
Butler per round: 30.9 -2.3 -3 -17.6 9.7 0.2 6.8 -22.4 -26.6 -8.5 14.1 3 14.9 3 -1.3by round

vs par split: bidding -0.19 · play +0.40

Strength of schedule: opponents averaged +0.01/bd (an average draw) → opponent-adjusted +0.01/bd

Card play — on target: opening leads 90.0% #15 of 125 · declarer play 84.1% #19 of 125 · defence 87.5% #70 of 125

Card play by contract type — on target
vs NTvs a suit
Opening leads·90.0% (40)
Declarer play·84.1% (44)
Defence·87.5% (80)

Opening leads by suit led: ♠ 100.0% (11) · ♥ 90.9% (11) · ♦ 66.7% (9) · ♣ 100.0% (9)

vs par by strain: a suit +0.36 (162)

vs par by level: part-score +0.09 (64) · game +1.02 (81) · slam -1.82 (17)

By role: declaring +0.79/bd (-1.21 vs par · 121) · defending -0.79/bd (+1.35 vs par · 119)

By vulnerability: vulnerable -0.31/bd (+0.03 vs par · 120) · not vulnerable +0.31/bd (+0.10 vs par · 120)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1K.FurutaJ.George – J.BojohOpen16+30.9+1.93-0.31
Round 2K.FurutaG.Groetheim – U.TundalClosed16-2.3-0.14+1.75
Round 4K.FurutaE.Rodwell – J.MeckstrothOpen16-3.0-0.19-0.19
Round 6K.FurutaP.Lambardi – H.UmanOpen16-17.6-1.10-0.88
Round 8K.FurutaF.Fantoni – C.NunesOpen16+9.7+0.61+0.62
Round 9K.FurutaC.Wu – C.ChenClosed16+0.2+0.01-1.62
Round 11K.FurutaA.Allana – J.FazliClosed16+6.8+0.42-0.50
Round 12K.FurutaS.De Wijs – B.MullerOpen16-22.4-1.40-1.06
Round 13K.FurutaR.Katz – G.JacobsClosed16-26.6-1.66-1.25
Round 14K.FurutaT.Hanlon – H.McgannOpen16-8.5-0.53-0.19
Round 16K.FurutaT.Cope – G.HolmanOpen16+14.1+0.88+3.25
Round 17K.FurutaJ.Zaluski – J.SmithClosed16+3.0+0.19-0.25
Round 19K.FurutaK.Martens – P.JassemClosed16+14.9+0.93+0.56
Round 20K.FurutaX.Wang – S.SunOpen16+3.0+0.19+1.88
Round 21K.FurutaA.Grant – A.KerClosed16-1.3-0.08-0.88

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
+13.3Round 1🇮🇩 INDONESIA46♦♠A=+11
+13.0Round 8🇮🇹 ITALY296♠♠4+1+13
+10.2Round 16🇿🇦 SOUTH AFRICA44♥♣=+9
+9.1Round 12🇳🇱 NETHERLANDS25♦♠3+1+5
+9.0Round 11🇵🇰 PAKISTAN203N♠4=+10
+8.8Round 8🇮🇹 ITALY286♥♠A-1+12
+8.4Round 14🇮🇪 IRELAND44♠♥J=+1
+8.3Round 11🇵🇰 PAKISTAN286♥♠4=-10
+8.3Round 13🇺🇸 USA 1294♥♦K-3+14
+7.6Round 4🇺🇸 USA 286♥♥2=+0
+7.2Round 9🇹🇼 CHINESE TAIPEI74♠♦Q+1+1
+6.7Round 20🇨🇳 CHINA SMEG153N♥6-1+12
+6.5Round 16🇿🇦 SOUTH AFRICA23N♥Q=+6
+6.4Round 11🇵🇰 PAKISTAN293N♠Q+3+2
+6.1Round 17🇨🇦 CANADA272♠x♠2+2+6
+5.8Round 1🇮🇩 INDONESIA114♥x=+4
+5.8Round 9🇹🇼 CHINESE TAIPEI43N♥K-4+7
+5.5Round 2🇳🇴 NORWAY144♥♥6=+0
+5.5Round 9🇹🇼 CHINESE TAIPEI154♠x♦6=+9
+5.4Round 2🇳🇴 NORWAY85♣x♥J-1+6
+5.4Round 6🇦🇷 ARGENTINA134♠x♣K-2+0
+5.4Round 19🇵🇱 POLAND263♥♦A-2-9
+5.3Round 1🇮🇩 INDONESIA134♥♠Q+1-12
+5.2Round 1🇮🇩 INDONESIA64♠♣6-2+6
+4.8Round 19🇵🇱 POLAND183N♦8+2+8
+4.7Round 20🇨🇳 CHINA SMEG73N♠3-2+13
+4.3Round 19🇵🇱 POLAND323N♦8=+0
+4.3Round 20🇨🇳 CHINA SMEG24♠♣A+1+6
+4.2Round 16🇿🇦 SOUTH AFRICA113♠♥K+1+2
+4.2Round 20🇨🇳 CHINA SMEG13N♠A-2+6
+4.0Round 9🇹🇼 CHINESE TAIPEI35♥x♣A-1+7
+4.0Round 11🇵🇰 PAKISTAN254♠♥J-1+5
+3.9Round 12🇳🇱 NETHERLANDS155♠x♥5-1+7
+3.8Round 14🇮🇪 IRELAND165♠♣9+1-13
+3.6Round 14🇮🇪 IRELAND33♠♥3=+0
+3.6Round 19🇵🇱 POLAND254♠♥Q-2+6
+3.5Round 4🇺🇸 USA 2114♠♦A-2+6
+3.5Round 9🇹🇼 CHINESE TAIPEI25♠♦4+1-5
+3.5Round 17🇨🇦 CANADA243♥x♣2-2+4
+3.4Round 19🇵🇱 POLAND284♥♣K-1+6
+3.2Round 2🇳🇴 NORWAY26♠♥A=+0
+3.1Round 6🇦🇷 ARGENTINA56♦♣10+1+1
+3.1Round 11🇵🇰 PAKISTAN222♠♠5+1+6
+3.1Round 16🇿🇦 SOUTH AFRICA93N♥-2+6
+3.1Round 21🇳🇿 NEW ZEALAND192♠♣J=+6
+3.1Round 21🇳🇿 NEW ZEALAND283N♣7-3+9
+3.0Round 8🇮🇹 ITALY254♥♠A=+0
+3.0Round 19🇵🇱 POLAND223♠♣8+1+6
+2.9Round 6🇦🇷 ARGENTINA145♥x♦J=+8
+2.9Round 12🇳🇱 NETHERLANDS82♠♦K-2+7
+2.9Round 13🇺🇸 USA 1322N♦5+1+1
+2.9Round 17🇨🇦 CANADA174♥x♣K-1+5
+2.8Round 2🇳🇴 NORWAY163N♥7+1+0
+2.8Round 8🇮🇹 ITALY272♠♠J+2+1
+2.7Round 4🇺🇸 USA 252N♣9=-7
+2.7Round 4🇺🇸 USA 2105♦♠K-1+12
+2.7Round 4🇺🇸 USA 2164♠♠2-1-2
+2.6Round 16🇿🇦 SOUTH AFRICA74♠♦2+1+0
+2.6Round 21🇳🇿 NEW ZEALAND274♠♥A-1+2
+2.5Round 13🇺🇸 USA 1214♥x♠4-1+2
+2.4Round 8🇮🇹 ITALY303N♠Q+1+0
+2.4Round 19🇵🇱 POLAND315♣♠J-1+6
+2.3Round 2🇳🇴 NORWAY113♠♣9-1+5
+2.2Round 2🇳🇴 NORWAY56♠♦10=+0
+2.2Round 8🇮🇹 ITALY242♥♦A+1+0
+2.1Round 19🇵🇱 POLAND205♣♦10=-1
+2.0Round 12🇳🇱 NETHERLANDS143♠♣K=+0
+2.0Round 20🇨🇳 CHINA SMEG43N♠4+3+12
+2.0Round 21🇳🇿 NEW ZEALAND243♠♣A+1+4
+1.9Round 1🇮🇩 INDONESIA92♠♥6=+0
+1.9Round 11🇵🇰 PAKISTAN233♥♦K=-2
+1.9Round 13🇺🇸 USA 1242♥♦Q+3+6
+1.9Round 19🇵🇱 POLAND214♠♠7=-1
+1.9Round 21🇳🇿 NEW ZEALAND173N♦7-1-4
+1.8Round 1🇮🇩 INDONESIA12♥♦Q+1+0
+1.8Round 17🇨🇦 CANADA224♠♥J+1+11
+1.7Round 1🇮🇩 INDONESIA124♠♦4=+6
+1.7Round 9🇹🇼 CHINESE TAIPEI102♥♣A+1+1
+1.6Round 1🇮🇩 INDONESIA157N♠4=+0
+1.6Round 4🇺🇸 USA 245♠x♦K-2+4
+1.6Round 14🇮🇪 IRELAND23♣♥K-2+2
+1.6Round 17🇨🇦 CANADA183♥♦J=+0
+1.5Round 6🇦🇷 ARGENTINA32N♠Q+1+7
+1.5Round 6🇦🇷 ARGENTINA161N♠J-2-1
+1.5Round 21🇳🇿 NEW ZEALAND234♥♠A+1+0
+1.4Round 1🇮🇩 INDONESIA53♣♥A-2+2
+1.4Round 20🇨🇳 CHINA SMEG31N♠A-1+5
+1.4Round 20🇨🇳 CHINA SMEG54♥♠+2+12
+1.3Round 2🇳🇴 NORWAY63♣♠K+1+0
+1.3Round 13🇺🇸 USA 1284♠♥10=+0
+1.2Round 8🇮🇹 ITALY234♥♠3+1+2
+1.2Round 9🇹🇼 CHINESE TAIPEI14♠♠2-2+6
+1.2Round 9🇹🇼 CHINESE TAIPEI93N♥7+3+1
+1.2Round 12🇳🇱 NETHERLANDS133N♣K=+1
+1.2Round 16🇿🇦 SOUTH AFRICA133N♦+2+1
+1.1Round 8🇮🇹 ITALY214♠♦10+1+0
+1.0Round 2🇳🇴 NORWAY13N♥Q-1-2
+1.0Round 13🇺🇸 USA 1172♠♦Q=+0
+0.9Round 4🇺🇸 USA 262♥♣6-2+0
+0.9Round 13🇺🇸 USA 1194♥♦6=+1
+0.9Round 17🇨🇦 CANADA282N♥Q+2-6
+0.9Round 20🇨🇳 CHINA SMEG161N♠A+1+1
+0.8Round 6🇦🇷 ARGENTINA112♠♦K+1+0
+0.8Round 9🇹🇼 CHINESE TAIPEI133N♣K+1+1
+0.8Round 11🇵🇰 PAKISTAN303N♣3=+3
+0.7Round 1🇮🇩 INDONESIA144♠x-3-14
+0.7Round 6🇦🇷 ARGENTINA64♠♦J+1+1
+0.6Round 17🇨🇦 CANADA203♣♥K+1+0
+0.6Round 20🇨🇳 CHINA SMEG83N♣7+3+1
+0.5Round 11🇵🇰 PAKISTAN324♠♥A+2+11
+0.5Round 16🇿🇦 SOUTH AFRICA13N♠3+2+1
+0.5Round 16🇿🇦 SOUTH AFRICA151N♣+1+0
+0.4Round 1🇮🇩 INDONESIA83N♠7=-2
+0.4Round 8🇮🇹 ITALY203N♥5+1+0
+0.4Round 21🇳🇿 NEW ZEALAND203♣♥4-1-11
+0.4Round 21🇳🇿 NEW ZEALAND302♠♥9+1+0
+0.3Round 8🇮🇹 ITALY313♣♥A-1+2
+0.3Round 12🇳🇱 NETHERLANDS71N♣5-1+0
+0.2Round 1🇮🇩 INDONESIA163N♦K+1+0
+0.2Round 6🇦🇷 ARGENTINA154♥♣K+1-4
+0.2Round 14🇮🇪 IRELAND13N♣9+1+1
+0.2Round 17🇨🇦 CANADA253N♥3=+0
+0.1Round 17🇨🇦 CANADA232♦♠3-1+1
+0.1Round 17🇨🇦 CANADA291N♦9+2-1
+0.1Round 20🇨🇳 CHINA SMEG63N♥9+1-1
+0.1Round 21🇳🇿 NEW ZEALAND293N♠J=+1
-0.0Round 1🇮🇩 INDONESIA24♠♥2+1+0
+0.0Round 1🇮🇩 INDONESIA74♠♣A+1+1
-0.0Round 4🇺🇸 USA 2135♣x♠3-2-4
+0.0Round 16🇿🇦 SOUTH AFRICA84♥♦=+0
-0.1Round 8🇮🇹 ITALY223N♣5+1+1
-0.1Round 9🇹🇼 CHINESE TAIPEI143N♣2-1-2
-0.1Round 11🇵🇰 PAKISTAN314♠♠4+1+0
-0.2Round 19🇵🇱 POLAND173♥♥4=+0
-0.3Round 11🇵🇰 PAKISTAN242♠♣K-1-3
-0.3Round 14🇮🇪 IRELAND154♥♥+3+15
-0.4Round 4🇺🇸 USA 292N♠8=-10
-0.4Round 13🇺🇸 USA 1183♠♣9=+0
-0.4Round 17🇨🇦 CANADA261N♥4-1+1
-0.4Round 21🇳🇿 NEW ZEALAND253N♠7+1+0
-0.5Round 19🇵🇱 POLAND295♦♠A=+0
-0.6Round 14🇮🇪 IRELAND144♥♠A+2-1
-0.6Round 20🇨🇳 CHINA SMEG143N♥8+2-11
-0.7Round 6🇦🇷 ARGENTINA85♥♠A=+0
-0.7Round 14🇮🇪 IRELAND73♥♣8=+10
-0.7Round 19🇵🇱 POLAND232♦♣Q-1+1
-0.8Round 13🇺🇸 USA 1304♥♠K=+0
-0.8Round 14🇮🇪 IRELAND83♥♠Q-1+2
-0.8Round 19🇵🇱 POLAND303N♦K=-1
-0.9Round 2🇳🇴 NORWAY74♥♣J+1+12
-0.9Round 4🇺🇸 USA 2123N♠4+1-1
-1.0Round 11🇵🇰 PAKISTAN213N♣3+2+0
-1.0Round 12🇳🇱 NETHERLANDS12♥♠K+1+4
-1.0Round 17🇨🇦 CANADA301N♥3=-5
-1.0Round 21🇳🇿 NEW ZEALAND214♥♠A+1-11
-1.1Round 2🇳🇴 NORWAY42N♥Q=+0
-1.1Round 8🇮🇹 ITALY184♠♣10+1+0
-1.1Round 14🇮🇪 IRELAND124♥♥6-1-5
-1.1Round 21🇳🇿 NEW ZEALAND324♦♣10=+7
-1.2Round 14🇮🇪 IRELAND63N♦Q-2-7
-1.2Round 16🇿🇦 SOUTH AFRICA52♠♥3+1+10
-1.2Round 17🇨🇦 CANADA312♠♣4+1+1
-1.3Round 16🇿🇦 SOUTH AFRICA162♠♣Q+1+0
-1.4Round 1🇮🇩 INDONESIA101N♣J+1-6
-1.4Round 4🇺🇸 USA 223N♦7+1+12
-1.4Round 14🇮🇪 IRELAND93N♠7=+0
-1.4Round 16🇿🇦 SOUTH AFRICA123♦♠Q=+0
-1.4Round 19🇵🇱 POLAND243N♥10+2+0
-1.4Round 20🇨🇳 CHINA SMEG125♥x♠2-1-7
-1.5Round 2🇳🇴 NORWAY34♠♥2+1+0
-1.6Round 12🇳🇱 NETHERLANDS54♠♦2=+0
-1.7Round 8🇮🇹 ITALY263N♥4+2+0
-1.7Round 12🇳🇱 NETHERLANDS111♠♦A+2+0
-1.7Round 16🇿🇦 SOUTH AFRICA33N♥+3+10
-1.9Round 4🇺🇸 USA 2153N♥10+2-1
-1.9Round 13🇺🇸 USA 1313N♦5-2-6
-1.9Round 16🇿🇦 SOUTH AFRICA62♠♠10=+0
-1.9Round 19🇵🇱 POLAND273N♥Q-2+0
-2.0Round 14🇮🇪 IRELAND134♥♦4+1-1
-2.0Round 20🇨🇳 CHINA SMEG134♥♣3-1-6
-2.1Round 13🇺🇸 USA 1261N♥2-2-2
-2.2Round 2🇳🇴 NORWAY103♣♣4-2+9
-2.3Round 21🇳🇿 NEW ZEALAND262♥♥Q-1+0
-2.4Round 6🇦🇷 ARGENTINA124♥♠7=+0
-2.4Round 13🇺🇸 USA 1232♣♠4+1+0
-2.4Round 20🇨🇳 CHINA SMEG92♠♦3+1+0
-2.5Round 6🇦🇷 ARGENTINA16♣♥3+1-11
-2.5Round 9🇹🇼 CHINESE TAIPEI62♥♠4+2+1
-2.5Round 14🇮🇪 IRELAND51N♠6=-8
-2.7Round 8🇮🇹 ITALY323♣♥5=-6
-2.7Round 9🇹🇼 CHINESE TAIPEI53N♠6=-15
-2.7Round 9🇹🇼 CHINESE TAIPEI163♠♦Q=-6
-2.8Round 2🇳🇴 NORWAY94♥♦7+1+10
-2.8Round 11🇵🇰 PAKISTAN273♥x♦5-1+1
-2.9Round 21🇳🇿 NEW ZEALAND223N♦6-1-5
-3.1Round 12🇳🇱 NETHERLANDS123N♥5-1-5
-3.2Round 4🇺🇸 USA 273♥♣8+1-1
-3.2Round 13🇺🇸 USA 1271♠♣5+4-3
-3.3Round 11🇵🇰 PAKISTAN173N♠Q+1-11
-3.4Round 6🇦🇷 ARGENTINA72N♦5+2-2
-3.4Round 6🇦🇷 ARGENTINA104♠♦4=+0
-3.4Round 17🇨🇦 CANADA193N♥9-6-14
-3.5Round 4🇺🇸 USA 214♣♣J-1-4
-3.5Round 11🇵🇰 PAKISTAN264♠♥4=+0
-3.5Round 16🇿🇦 SOUTH AFRICA144N♠=+10
-3.6Round 21🇳🇿 NEW ZEALAND312♥♦A-2-5
-3.7Round 16🇿🇦 SOUTH AFRICA103♠♦10-2-3
-4.0Round 12🇳🇱 NETHERLANDS34♥♦4=+0
-4.1Round 12🇳🇱 NETHERLANDS103N♠8-1-12
-4.3Round 17🇨🇦 CANADA213♥♠8=-1
-4.5Round 17🇨🇦 CANADA324♠♥8=-6
-4.8Round 6🇦🇷 ARGENTINA44♥♣A=+1
-4.9Round 8🇮🇹 ITALY176♦♥Q=+2
-5.0Round 2🇳🇴 NORWAY124♥♦A=+0
-5.0Round 2🇳🇴 NORWAY156♠♣9=-1
-5.1Round 12🇳🇱 NETHERLANDS66♦♣8-2-13
-5.1Round 21🇳🇿 NEW ZEALAND183N♣5-3-7
-5.2Round 9🇹🇼 CHINESE TAIPEI125♠x♥A-1-11
-5.6Round 12🇳🇱 NETHERLANDS166♠♠8=+0
-5.7Round 14🇮🇪 IRELAND117♦♥4=+2
-6.0Round 11🇵🇰 PAKISTAN194N♣Q+2-17
-6.5Round 4🇺🇸 USA 2144♥♦K=-7
-6.6Round 6🇦🇷 ARGENTINA24♠♥A+3-14
-6.8Round 12🇳🇱 NETHERLANDS43♥♣Q-3-5
-6.9Round 4🇺🇸 USA 234♠♠5=+0
-6.9Round 20🇨🇳 CHINA SMEG114♠x♥A-4-8
-7.0Round 1🇮🇩 INDONESIA34♥♣7+1-1
-7.5Round 2🇳🇴 NORWAY132♥♥K-1-11
-8.1Round 9🇹🇼 CHINESE TAIPEI82♠x♣Q-3-14
-8.8Round 12🇳🇱 NETHERLANDS95♦x♥A+1-6
-9.4Round 9🇹🇼 CHINESE TAIPEI113N♥Q=-7
-9.8Round 14🇮🇪 IRELAND106N♣5+1-1
-9.9Round 6🇦🇷 ARGENTINA97N♥10=+0
-9.9Round 13🇺🇸 USA 1226♥♠8-1-13
-10.0Round 20🇨🇳 CHINA SMEG103♣x♠8=-5
-10.2Round 11🇵🇰 PAKISTAN185♣♥4=-3
-10.5Round 19🇵🇱 POLAND194♣x♠A=-12
-11.9Round 13🇺🇸 USA 1256N♥A-1-13
-12.8Round 13🇺🇸 USA 1206♦♥A=-7
-15.0Round 8🇮🇹 ITALY197♣♠Q-1-17