🇯🇵 CHEN Dawei · JAPAN

35rank
+87.5Butler · 240 bds
+0.36per board
±4.7swing
+0.65vs par /bd · #20/125
+0.40adjusted /bd
Butler per round: -22.7 18.9 -15 23.9 27.9 -6.9 -8.5 -6.5 -2.8 26.8 -20.9 2.1 -13.8 78 7by round

vs par split: bidding +0.74 · play -0.08

Strength of schedule: opponents averaged +0.03/bd (an average draw) → opponent-adjusted +0.40/bd

Card play — on target: opening leads 84.9% #58 of 125 · declarer play 74.1% #85 of 125 · defence 90.8% #41 of 125

Card play by contract type — on target
vs NTvs a suit
Opening leads·84.9% (53)
Declarer play·74.1% (27)
Defence·90.8% (98)

Opening leads by suit led: ♠ 84.6% (13) · ♥ 75.0% (16) · ♦ 86.7% (15) · ♣ 100.0% (9)

vs par by strain: a suit +0.66 (157)

vs par by level: part-score +0.52 (65) · game +0.56 (80) · slam +2.08 (12)

By role: declaring +0.28/bd (-2.53 vs par · 91) · defending +0.46/bd (+2.67 vs par · 146)

By vulnerability: vulnerable +0.53/bd (+0.87 vs par · 120) · not vulnerable +0.20/bd (+0.43 vs par · 120)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 2K.FurutaB.Drijver – S.BrinkOpen16-22.7-1.42-1.62
Round 3K.FurutaJ.Zhao – Z.FuClosed16+18.9+1.18+3.06
Round 4K.FurutaE.Muzzio – A.BianchediClosed16-15.0-0.94-0.12
Round 6K.FurutaA.El-Kourdy – K.NabilClosed16+23.9+1.49+0.94
Round 7K.FurutaG.Karakolev – D.DanailovOpen16+27.9+1.74+0.62
Round 8K.FurutaM.Ware – M.WhibleyClosed16-6.9-0.43+0.31
Round 10K.FurutaF.Stewart – K.WoolseyOpen16-8.5-0.53-1.88
Round 11K.FurutaA.Gromov – A.DubininOpen16-6.5-0.41-0.75
Round 12K.FurutaM.Elinescu – E.WladowClosed16-2.8-0.17+0.50
Round 13K.FurutaD.Appleton – P.ReynoldsClosed16+26.8+1.68+3.38
Round 15K.FurutaG.Groetheim – U.TundalClosed16-20.9-1.31+1.31
Round 17K.FurutaJ.Robles – M.CaracciOpen16+2.1+0.13-0.12
Round 18K.FurutaA.Sementa – G.DuboinClosed16-13.8-0.86-0.94
Round 19K.FurutaC.Bensaid – S.SbiliOpen16+78.0+4.88+5.94
Round 21K.FurutaR.Dalal – S.GuptaClosed16+7.0+0.44-0.88

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
+15.3Round 19🇲🇦 MOROCCO27♦x♥Q-1+17
+14.1Round 11🇷🇺 RUSSIA126Nx♥6-1+17
+12.6Round 6🇪🇬 EGYPT247♣♦2=+1
+12.3Round 13🇦🇺 AUSTRALIA96♠♦K-2+12
+11.0Round 3🇨🇳 CHINA LONG ZHU OPEN65♦x♣J-3+12
+10.7Round 7🇧🇬 BULGARIA95♠♣J-1+11
+10.4Round 13🇦🇺 AUSTRALIA164♠x♥4+1+8
+9.3Round 19🇲🇦 MOROCCO116♣♦5-3+12
+9.0Round 19🇲🇦 MOROCCO66♥♣6-1+11
+8.7Round 13🇦🇺 AUSTRALIA74♥♦5+2+13
+8.3Round 19🇲🇦 MOROCCO125♦♠K-2+13
+8.2Round 18🇮🇹 ITALY306♣♥7=+0
+8.1Round 3🇨🇳 CHINA LONG ZHU OPEN163♠♣Q+1+10
+8.1Round 19🇲🇦 MOROCCO46N♦T+1+13
+7.9Round 2🇳🇱 NETHERLANDS263♦♥5-2+8
+7.4Round 17🇨🇱 CHILE64♠x♥K-4+11
+7.2Round 7🇧🇬 BULGARIA153N♦2+3+2
+6.9Round 21🇮🇳 INDIA53N♥3-3+4
+6.9Round 21🇮🇳 INDIA163N♥T-1+10
+6.7Round 13🇦🇺 AUSTRALIA132♠x♥J-2+9
+6.6Round 7🇧🇬 BULGARIA73N♥2+1-1
+6.5Round 11🇷🇺 RUSSIA65♥♦K+1+1
+6.3Round 19🇲🇦 MOROCCO13♥♠6=+7
+6.2Round 19🇲🇦 MOROCCO103N♠6+3+17
+6.2Round 19🇲🇦 MOROCCO154♥♣T+2+17
+6.2Round 21🇮🇳 INDIA94♠♣9=+10
+6.0Round 8🇳🇿 NEW ZEALAND173N♠7+4+2
+5.9Round 17🇨🇱 CHILE132N♥T-2+7
+5.8Round 18🇮🇹 ITALY293N♥3+3+1
+5.7Round 21🇮🇳 INDIA72♠x♠K-1+7
+5.6Round 7🇧🇬 BULGARIA13N♠J+3+3
+5.6Round 12🇩🇪 GERMANY264♠♦2=+0
+5.4Round 17🇨🇱 CHILE143N♣3=+3
+5.3Round 12🇩🇪 GERMANY243N♣8=+3
+5.2Round 15🇳🇴 NORWAY64♥♣K-2+7
+5.0Round 17🇨🇱 CHILE93♠♥8=+0
+4.9Round 19🇲🇦 MOROCCO32N♠A+2-3
+4.8Round 11🇷🇺 RUSSIA102♠♦2-3+5
+4.8Round 18🇮🇹 ITALY244♥♣A=+8
+4.8Round 21🇮🇳 INDIA44♠x♥4-1+7
+4.5Round 10🇺🇸 USA 1193♥♣Q+1+6
+4.5Round 10🇺🇸 USA 1264♠♦9=-1
+4.2Round 6🇪🇬 EGYPT203♠♥5=+0
+4.0Round 10🇺🇸 USA 1295♦x♦3-5-1
+4.0Round 13🇦🇺 AUSTRALIA146♠♣2=+0
+3.9Round 7🇧🇬 BULGARIA132♠x♥J-2-3
+3.9Round 17🇨🇱 CHILE53♦♥T=+0
+3.8Round 3🇨🇳 CHINA LONG ZHU OPEN116♦x♠9-3+5
+3.8Round 6🇪🇬 EGYPT254♥x♥9-1+5
+3.8Round 7🇧🇬 BULGARIA144♥♦8-1+10
+3.8Round 10🇺🇸 USA 1251N♥8-2+5
+3.7Round 6🇪🇬 EGYPT322N♠4-1+5
+3.7Round 12🇩🇪 GERMANY275♠x♣7-2+0
+3.5Round 3🇨🇳 CHINA LONG ZHU OPEN123N♠Q=-1
+3.5Round 19🇲🇦 MOROCCO53♠♥K-1+5
+3.4Round 2🇳🇱 NETHERLANDS314♠♦2-2+2
+3.3Round 4🇦🇷 ARGENTINA193♥♦A+1+6
+3.3Round 6🇪🇬 EGYPT233♠♥8-1+0
+3.1Round 7🇧🇬 BULGARIA113♥♠K-2+0
+3.0Round 13🇦🇺 AUSTRALIA23N♠6-1+12
+2.9Round 10🇺🇸 USA 1213N♥T+2+0
+2.8Round 3🇨🇳 CHINA LONG ZHU OPEN53♠♦2-1+5
+2.8Round 8🇳🇿 NEW ZEALAND304♦♠K=+0
+2.8Round 10🇺🇸 USA 1323♥♥6=-10
+2.8Round 13🇦🇺 AUSTRALIA34♠♦3-2+11
+2.6Round 4🇦🇷 ARGENTINA243♥♥3-1+4
+2.6Round 6🇪🇬 EGYPT194♠♥9-1-5
+2.4Round 12🇩🇪 GERMANY302♠♥3+2+6
+2.4Round 15🇳🇴 NORWAY24♠♥4-1+5
+2.4Round 15🇳🇴 NORWAY44N♦9+1+0
+2.4Round 19🇲🇦 MOROCCO164♠♥7-1-2
+2.3Round 6🇪🇬 EGYPT184♦♥K=+9
+2.3Round 7🇧🇬 BULGARIA105♠x♣9-4+10
+2.3Round 10🇺🇸 USA 1273♠♥A=+1
+2.3Round 11🇷🇺 RUSSIA114♥♠3+1+0
+2.2Round 2🇳🇱 NETHERLANDS243♣♦2-2+0
+2.2Round 2🇳🇱 NETHERLANDS271N♠3=-1
+2.1Round 6🇪🇬 EGYPT295♣♠J+1+0
+2.0Round 10🇺🇸 USA 1313N♠3=+0
+2.0Round 17🇨🇱 CHILE32♥♥5+1+1
+1.9Round 8🇳🇿 NEW ZEALAND192N♠K=+0
+1.9Round 12🇩🇪 GERMANY173N♥9=+1
+1.9Round 19🇲🇦 MOROCCO145♦♠6-2+5
+1.8Round 2🇳🇱 NETHERLANDS324♥♦2-1+10
+1.8Round 3🇨🇳 CHINA LONG ZHU OPEN141N♥6+2+7
+1.7Round 8🇳🇿 NEW ZEALAND323N♦Q+2+11
+1.5Round 2🇳🇱 NETHERLANDS173N♦Q+1+1
+1.5Round 6🇪🇬 EGYPT274♠♣K-1+4
+1.5Round 13🇦🇺 AUSTRALIA64♠♥K+2-13
+1.5Round 13🇦🇺 AUSTRALIA151N♠4=+1
+1.5Round 19🇲🇦 MOROCCO93♦♥T=-11
+1.5Round 21🇮🇳 INDIA154♠♣A+1-11
+1.4Round 6🇪🇬 EGYPT303N♥4=+0
+1.4Round 12🇩🇪 GERMANY293N♦3-1+6
+1.4Round 21🇮🇳 INDIA114♠♠4+1+0
+1.3Round 3🇨🇳 CHINA LONG ZHU OPEN43N♠3+1+17
+1.3Round 3🇨🇳 CHINA LONG ZHU OPEN74♠♠6+3+17
+1.3Round 3🇨🇳 CHINA LONG ZHU OPEN94♥♦9=+0
+1.2Round 2🇳🇱 NETHERLANDS302♠♥2-1-2
+1.2Round 4🇦🇷 ARGENTINA222♦♣T+1-1
+1.2Round 18🇮🇹 ITALY204♠♣2+1+0
+1.1Round 4🇦🇷 ARGENTINA214♥♠6+2-11
+1.1Round 4🇦🇷 ARGENTINA323N♦2+1-1
+1.1Round 8🇳🇿 NEW ZEALAND203N♣A+1+0
+1.1Round 18🇮🇹 ITALY323N♠Q=+11
+1.0Round 8🇳🇿 NEW ZEALAND223♦♣8-1+4
+0.9Round 18🇮🇹 ITALY254♠♦7=+10
+0.9Round 18🇮🇹 ITALY263N♥6-1+5
+0.8Round 4🇦🇷 ARGENTINA274♠♦7=+0
+0.8Round 15🇳🇴 NORWAY134♥♣5+3+12
+0.8Round 15🇳🇴 NORWAY165♣♠K=-2
+0.8Round 18🇮🇹 ITALY234♠♦5=+1
+0.6Round 21🇮🇳 INDIA82♥♦A-1+4
+0.4Round 6🇪🇬 EGYPT262♠♠7+1+0
+0.4Round 11🇷🇺 RUSSIA135♣♠4+1+13
+0.4Round 17🇨🇱 CHILE122♥♥7+3-6
+0.3Round 11🇷🇺 RUSSIA73♦♥J-1-9
+0.3Round 13🇦🇺 AUSTRALIA113N♠Q=+11
+0.3Round 17🇨🇱 CHILE11N♣Q-1-2
+0.2Round 7🇧🇬 BULGARIA42♥♥6+3-9
+0.1Round 4🇦🇷 ARGENTINA283N♠K+1+0
+0.1Round 4🇦🇷 ARGENTINA313♣♠K+1+9
+0.1Round 11🇷🇺 RUSSIA33N♠J=+1
+0.1Round 12🇩🇪 GERMANY223N♠J=+1
+0.1Round 21🇮🇳 INDIA136N♦2=+0
+0.0Round 8🇳🇿 NEW ZEALAND311N♠5-1+2
+0.0Round 15🇳🇴 NORWAY51N♠Q+4+6
-0.0Round 15🇳🇴 NORWAY143N♠5+1+1
-0.1Round 8🇳🇿 NEW ZEALAND232♥♦K=+1
-0.2Round 12🇩🇪 GERMANY214♠♣4+1+0
-0.3Round 2🇳🇱 NETHERLANDS233N♥4+1+1
-0.3Round 15🇳🇴 NORWAY83♥♦K-1+2
-0.4Round 11🇷🇺 RUSSIA83N♠8=-2
-0.4Round 12🇩🇪 GERMANY203N♥2+2+0
-0.4Round 19🇲🇦 MOROCCO133♦♠6=+0
-0.5Round 4🇦🇷 ARGENTINA171N♥3-1-2
-0.6Round 6🇪🇬 EGYPT283N♣5+1+0
-0.6Round 8🇳🇿 NEW ZEALAND244♠♣J+1+0
-0.6Round 12🇩🇪 GERMANY324♠♣K+1+0
-0.7Round 7🇧🇬 BULGARIA161N♥3=+1
-0.7Round 8🇳🇿 NEW ZEALAND21Pass+3
-0.7Round 10🇺🇸 USA 1281♠♦4-1+0
-0.7Round 12🇩🇪 GERMANY231N♠5=+1
-0.7Round 15🇳🇴 NORWAY35♥x♠4-1+0
-0.7Round 17🇨🇱 CHILE72♠♣3=+11
-0.7Round 21🇮🇳 INDIA3Pass-4
-0.8Round 4🇦🇷 ARGENTINA201N♥2=-5
-0.8Round 12🇩🇪 GERMANY311N♣J-1+2
-0.8Round 15🇳🇴 NORWAY11N♠4+2+0
-0.9Round 7🇧🇬 BULGARIA24N♠6=+0
-0.9Round 8🇳🇿 NEW ZEALAND184♠♥K-1-5
-0.9Round 15🇳🇴 NORWAY114♥♠6=+1
-0.9Round 18🇮🇹 ITALY193♥♦7-2-7
-1.0Round 3🇨🇳 CHINA LONG ZHU OPEN131N♣4+1+0
-1.0Round 6🇪🇬 EGYPT222♠♠4=+7
-1.0Round 8🇳🇿 NEW ZEALAND271N♣K+1+0
-1.0Round 15🇳🇴 NORWAY104♥♦K+1+0
-1.1Round 13🇦🇺 AUSTRALIA101N♥6+1-1
-1.2Round 3🇨🇳 CHINA LONG ZHU OPEN14♥♣T+2+1
-1.3Round 7🇧🇬 BULGARIA32N♠T+1-6
-1.3Round 21🇮🇳 INDIA104♥♠4+1-1
-1.4Round 11🇷🇺 RUSSIA11N♣3+1+0
-1.4Round 13🇦🇺 AUSTRALIA14♥♣8=+1
-1.6Round 17🇨🇱 CHILE114♥♠K=+1
-1.7Round 2🇳🇱 NETHERLANDS194♠x♦A-1-8
-1.7Round 3🇨🇳 CHINA LONG ZHU OPEN153♦♠6-1+0
-1.8Round 2🇳🇱 NETHERLANDS252♠♥5+1-6
-1.8Round 4🇦🇷 ARGENTINA181♠♦7+1+11
-1.8Round 18🇮🇹 ITALY172♦♣2+3-1
-1.8Round 19🇲🇦 MOROCCO84♠♠7-2-7
-1.9Round 6🇪🇬 EGYPT173N♦5+1+0
-2.0Round 3🇨🇳 CHINA LONG ZHU OPEN31♠♦Q-1-4
-2.0Round 7🇧🇬 BULGARIA54♦♠J-1+5
-2.0Round 10🇺🇸 USA 1243♠♥K-1-4
-2.0Round 12🇩🇪 GERMANY193♥♠K-2-1
-2.0Round 13🇦🇺 AUSTRALIA44♥♦2=+1
-2.1Round 7🇧🇬 BULGARIA121N♥A-2-5
-2.1Round 21🇮🇳 INDIA123N♥4=-11
-2.2Round 10🇺🇸 USA 1303N♥J=+0
-2.4Round 4🇦🇷 ARGENTINA303♦♣5+2+6
-2.4Round 18🇮🇹 ITALY223♠♠5-1+1
-2.5Round 17🇨🇱 CHILE43N♠T+1+1
-2.6Round 6🇪🇬 EGYPT214♥♦6-2+0
-2.6Round 8🇳🇿 NEW ZEALAND294♠♥2=+0
-2.7Round 17🇨🇱 CHILE24♠♥6-1+2
-2.7Round 19🇲🇦 MOROCCO72N♠K=+1
-2.7Round 21🇮🇳 INDIA22♣♥3+1+0
-2.8Round 18🇮🇹 ITALY186♥♣2+1-11
-2.8Round 18🇮🇹 ITALY272♥♣2=-5
-2.9Round 3🇨🇳 CHINA LONG ZHU OPEN82N♦3-1-5
-2.9Round 4🇦🇷 ARGENTINA264♠♣7-2-8
-2.9Round 7🇧🇬 BULGARIA83♦♠9=+1
-2.9Round 8🇳🇿 NEW ZEALAND263N♥8=-10
-2.9Round 10🇺🇸 USA 1183N♠3=-7
-2.9Round 11🇷🇺 RUSSIA52♥♥6-1+2
-3.0Round 3🇨🇳 CHINA LONG ZHU OPEN102♣♥J+1-6
-3.0Round 12🇩🇪 GERMANY281N♥J+1+0
-3.0Round 13🇦🇺 AUSTRALIA53♠♣A=+0
-3.0Round 17🇨🇱 CHILE84♠♣K=-8
-3.0Round 17🇨🇱 CHILE15Pass-3
-3.4Round 2🇳🇱 NETHERLANDS294♥♦2+2-1
-3.5Round 4🇦🇷 ARGENTINA234♠♣7+1+0
-3.6Round 2🇳🇱 NETHERLANDS204♥♠7+1+0
-3.7Round 15🇳🇴 NORWAY152♠♥J+1-1
-3.8Round 4🇦🇷 ARGENTINA253♣♥3+1+0
-3.8Round 10🇺🇸 USA 1231N♥3+1+0
-4.2Round 3🇨🇳 CHINA LONG ZHU OPEN24♥♥4-1-9
-4.2Round 17🇨🇱 CHILE101N♣2-3-5
-4.3Round 2🇳🇱 NETHERLANDS283♥♦8-1-5
-4.3Round 11🇷🇺 RUSSIA163♠♥Q-1-6
-4.3Round 18🇮🇹 ITALY283N♣2-3-11
-4.4Round 11🇷🇺 RUSSIA44♠♣7=+0
-4.6Round 11🇷🇺 RUSSIA144♣♥A=-6
-4.6Round 11🇷🇺 RUSSIA152♦♦2=-11
-4.6Round 13🇦🇺 AUSTRALIA84♥♥3+1+0
-4.6Round 21🇮🇳 INDIA142♠♥K+1-7
-5.0Round 8🇳🇿 NEW ZEALAND284♥♦6+1-4
-5.2Round 11🇷🇺 RUSSIA23N♥6-5-4
-5.6Round 7🇧🇬 BULGARIA64♠♣7-1-9
-5.7Round 10🇺🇸 USA 1176N♠J=+0
-6.0Round 15🇳🇴 NORWAY94♠♥7=+0
-6.2Round 21🇮🇳 INDIA13N♦3-1-10
-7.2Round 11🇷🇺 RUSSIA94♠♦A+2-13
-7.3Round 12🇩🇪 GERMANY184♠♦Q=+1
-7.6Round 8🇳🇿 NEW ZEALAND254♥♦K-3+1
-7.6Round 10🇺🇸 USA 1205♦♥5+1-13
-7.9Round 6🇪🇬 EGYPT315♥x♠2=-11
-8.2Round 2🇳🇱 NETHERLANDS186♥♦2=+0
-8.2Round 12🇩🇪 GERMANY253N♣Q-2-12
-8.2Round 15🇳🇴 NORWAY74♣♦3=+2
-8.3Round 2🇳🇱 NETHERLANDS223N♦6-1-12
-8.9Round 18🇮🇹 ITALY313N♠7-1-10
-9.5Round 21🇮🇳 INDIA65♣♥Q-1-12
-9.6Round 4🇦🇷 ARGENTINA293N♥7+1-10
-10.4Round 10🇺🇸 USA 1224♠♥J-1-6
-10.5Round 17🇨🇱 CHILE166♠♥A-1-15
-10.9Round 15🇳🇴 NORWAY124♠♦A-1-12
-11.3Round 2🇳🇱 NETHERLANDS214♠♣6=-13
-12.3Round 13🇦🇺 AUSTRALIA125♥x♦5=-11
-13.6Round 18🇮🇹 ITALY216♣x♦A-6-7