🇭🇰 KO Dave · HONG KONG CHINA

56rank
+31.7Butler · 224 bds
+0.14per board
±4.4swing
+0.37vs par /bd · #41/111
+0.29adjusted /bd
Butler per round: 8.6 -7.3 23.4 9 19.5 -16.5 -14.5 22.2 -30.9 29 23.4 -5.4 9.8 -13.2 -3.5 -21.9by round

vs par split: bidding +0.65 · play -0.32

Strength of schedule: opponents averaged +0.15/bd (a tough draw) → opponent-adjusted +0.29/bd

Card play — on target: opening leads 76.6% #73 of 111 · declarer play 75.0% #48 of 111 · defence 76.4% #89 of 111

Bidding activity — not a pass: 48.7% #4 of 111 (292/599)

Card play by contract type — on target
vs NTvs a suit
Opening leads80.0% (20)74.1% (27)
Declarer play76.2% (21)74.4% (43)
Defence70.0% (40)80.0% (70)

Opening leads by suit led: ♠ 83.3% (12) · ♥ 80.0% (15) · ♦ 81.8% (11) · ♣ 55.6% (9)

vs par by strain: NT -0.63 (71) · a suit +0.78 (152)

vs par by level: part-score +0.74 (69) · game -0.28 (141) · slam +4.77 (13)

By role: declaring +0.36/bd (-1.70 vs par · 113) · defending -0.08/bd (+2.48 vs par · 111)

By vulnerability: vulnerable +0.33/bd (+0.82 vs par · 112) · not vulnerable -0.05/bd (-0.08 vs par · 112)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1J.ChiangJ.Chen – H.CaiOpen14+8.6+0.61+1.36
Round 3J.ChiangM.Xu – O.SchiresonOpen14-7.3-0.52+2.36
Round 4J.ChiangZ.Yan – R.SongOpen14+23.4+1.67+2.79
Round 5J.ChiangM.Saetre – A.BrogelandOpen14+9.0+0.64+0.50
Round 6J.ChiangF.Kurlit – W.BakOpen14+19.5+1.39+1.36
Round 7J.ChiangA.Goss – G.MorganClosed14-16.5-1.18-2.64
Round 8J.ChiangA.Zhou – M.HuClosed14-14.5-1.04+0.21
Round 10J.ChiangC.He – Z.ChengOpen14+22.2+1.59+2.43
Round 11J.ChiangO.Sabbah – Y.SliwowiczClosed14-30.9-2.21+0.29
Round 12J.ChiangY.Inoue – K.TakizawaOpen14+29.0+2.07+2.71
Round 13J.ChiangR.Siew – J.TiohOpen14+23.4+1.67+2.07
Round 14J.ChiangL.Rombaut – A.GallardClosed14-5.4-0.39-1.64
Round 15J.ChiangA.Cope – T.GardnerClosed14+9.8+0.70-1.21
Round 16J.ChiangK.Dezso – B.ZabradiClosed14-13.2-0.94-0.07
Round 17J.ChiangG.Friesen – J.EssinkClosed14-3.5-0.25-1.43
Round 19J.ChiangA.Tylvad – N.HammelevClosed14-21.9-1.56-3.14

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 6🇵🇱 POLAND206♦♥9-2+17
+12.2Round 10🇨🇦 CANADA164♥♦6+2+13
+11.9Round 5🇳🇴 NORWAY96♥x♥6-3+12
+11.7Round 8🇺🇸 USA2197♣♦J-1+17
+10.6Round 13🇸🇬 SINGAPORE103NT♥2+2+2
+9.9Round 6🇵🇱 POLAND284♥♣2-4+11
+9.9Round 10🇨🇦 CANADA214♦x♦8=+9
+9.7Round 14🇫🇷 FRANCE234♦♠2+2+15
+9.4Round 11🇮🇱 ISRAEL93NT♥8=+10
+9.0Round 7🇦🇺 AUSTRALIA34♠♥A+1+8
+8.2Round 4🇳🇿 NEW ZEALAND213NT♦Q+1+11
+8.1Round 4🇳🇿 NEW ZEALAND194♠♥A=+11
+7.7Round 1🇨🇳 CHINA113NT♠8+1+8
+7.5Round 4🇳🇿 NEW ZEALAND154♠♥6+1+2
+7.5Round 13🇸🇬 SINGAPORE114♠♦5=+0
+7.4Round 14🇫🇷 FRANCE284♠♦K=+1
+7.4Round 15🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND56♠♦Q-1+13
+6.6Round 4🇳🇿 NEW ZEALAND174♠♣K=+0
+6.5Round 4🇳🇿 NEW ZEALAND244♠♣K-2+11
+6.3Round 3🇺🇸 USA1137♦♥T-2+17
+5.5Round 12🇯🇵 JAPAN232♦♦A-1+5
+5.4Round 16🇭🇺 HUNGARY185♦♠7-1+9
+5.3Round 7🇦🇺 AUSTRALIA131NT♥3+3+10
+5.2Round 17🇳🇱 NETHERLANDS74♥♦A+1+0
+5.1Round 13🇸🇬 SINGAPORE3Adj.♥9+10
+4.9Round 16🇭🇺 HUNGARY153♦♣6-3+5
+4.8Round 12🇯🇵 JAPAN193♠♥Q=+0
+4.8Round 16🇭🇺 HUNGARY264♥♦2=+0
+4.7Round 1🇨🇳 CHINA53NT♠5-1+12
+4.7Round 1🇨🇳 CHINA122♠♥T+2+10
+4.6Round 15🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND113NT♥2=-11
+4.5Round 12🇯🇵 JAPAN166NT♦3+1+11
+4.5Round 12🇯🇵 JAPAN254♥♥6=+10
+4.4Round 6🇵🇱 POLAND166♠♠2=-13
+4.4Round 10🇨🇦 CANADA183NT♠2-2+8
+4.3Round 7🇦🇺 AUSTRALIA123♠♦6-1+6
+4.0Round 12🇯🇵 JAPAN277NT♣T=+0
+3.7Round 3🇺🇸 USA1143NT♥J=+3
+3.7Round 12🇯🇵 JAPAN241NT♠4+3+2
+3.7Round 13🇸🇬 SINGAPORE52♠♥A+1+2
+3.6Round 1🇨🇳 CHINA33NT♠Q+2-12
+3.6Round 17🇳🇱 NETHERLANDS94♠x♣Q-1+0
+3.4Round 1🇨🇳 CHINA132♥♣9-1+6
+3.3Round 3🇺🇸 USA183NT♥5+2+1
+3.2Round 3🇺🇸 USA142♥♠A-1+5
+3.2Round 15🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND144♥♦T=-1
+3.1Round 19🇩🇰 DENMARK14♠♥Q+2+1
+3.1Round 19🇩🇰 DENMARK125♦x♠K-2+2
+3.0Round 6🇵🇱 POLAND174♠♥2=+0
+2.9Round 13🇸🇬 SINGAPORE96NT♥9+1+11
+2.8Round 10🇨🇦 CANADA204♥♣K-1+9
+2.8Round 15🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND34♠♣8+1+0
+2.7Round 10🇨🇦 CANADA224♠♦9-2+5
+2.7Round 13🇸🇬 SINGAPORE12♥♦A-1+4
+2.7Round 16🇭🇺 HUNGARY252♠♣J=+6
+2.6Round 12🇯🇵 JAPAN223♠♥2-1+10
+2.6Round 15🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND23♣♣6+2+1
+2.5Round 5🇳🇴 NORWAY32♥♣A-2+0
+2.5Round 5🇳🇴 NORWAY82♠♥A-2+5
+2.5Round 5🇳🇴 NORWAY113NT♣7=-1
+2.5Round 5🇳🇴 NORWAY123♠♥6-2+7
+2.5Round 17🇳🇱 NETHERLANDS24♠♥2+1+0
+2.4Round 10🇨🇦 CANADA275♣♠4+1-11
+2.3Round 19🇩🇰 DENMARK84♥♦8=+7
+2.2Round 5🇳🇴 NORWAY71NT♦A-1-1
+2.2Round 12🇯🇵 JAPAN214♠♦8=-1
+2.1Round 8🇺🇸 USA2232♠♦T=+6
+2.0Round 8🇺🇸 USA2274♥♠6+2+1
+1.8Round 8🇺🇸 USA2162♠♦5=+0
+1.8Round 17🇳🇱 NETHERLANDS134♥♦K+1+0
+1.7Round 3🇺🇸 USA1103♥♣J=+10
+1.7Round 15🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND93NT♦9=-2
+1.6Round 13🇸🇬 SINGAPORE122NT♦A-2+8
+1.5Round 1🇨🇳 CHINA62♠♦K-1+7
+1.5Round 3🇺🇸 USA114♦x♥5-1+0
+1.5Round 4🇳🇿 NEW ZEALAND251NT♣K=+2
+1.5Round 5🇳🇴 NORWAY54♠♦K=+0
+1.5Round 12🇯🇵 JAPAN153NT♠7-1+0
+1.5Round 14🇫🇷 FRANCE244♣♦A-1+4
+1.4Round 1🇨🇳 CHINA14♠♥4+1+0
+1.4Round 13🇸🇬 SINGAPORE62♥♣K-1+1
+1.4Round 14🇫🇷 FRANCE254♠♥3+3+14
+1.3Round 17🇳🇱 NETHERLANDS42♠♦A-1+1
+1.3Round 19🇩🇰 DENMARK92NT♥6-1+4
+1.2Round 6🇵🇱 POLAND242NT♦5-1+4
+1.2Round 11🇮🇱 ISRAEL84♥♣Q=+0
+1.2Round 17🇳🇱 NETHERLANDS112♦♥K-1+2
+1.1Round 14🇫🇷 FRANCE154♠♣A+1+0
+1.0Round 7🇦🇺 AUSTRALIA101NT♣5=+0
+1.0Round 17🇳🇱 NETHERLANDS123NT♠3+1+0
+0.9Round 15🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND125♦♥8=-11
+0.9Round 17🇳🇱 NETHERLANDS64♠♥7+1+4
+0.8Round 7🇦🇺 AUSTRALIA63♣♠7-2-9
+0.8Round 15🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND134♥♥3+1+0
+0.7Round 4🇳🇿 NEW ZEALAND283♣♥6-2+1
+0.7Round 8🇺🇸 USA2221NT♥6=-1
+0.7Round 12🇯🇵 JAPAN284♥♣6+2-1
+0.7Round 13🇸🇬 SINGAPORE84♥♦T=+11
+0.7Round 17🇳🇱 NETHERLANDS103NT♥2+1+0
+0.6Round 8🇺🇸 USA2203NT♥5-2+8
+0.6Round 11🇮🇱 ISRAEL131NT♥2=+2
+0.4Round 6🇵🇱 POLAND261NT♦7=-1
+0.2Round 1🇨🇳 CHINA44♠♣K+1+0
+0.2Round 4🇳🇿 NEW ZEALAND164♠♣6=+1
+0.2Round 4🇳🇿 NEW ZEALAND184♠♣5+1+0
+0.2Round 12🇯🇵 JAPAN184♠♠6-2-5
+0.2Round 14🇫🇷 FRANCE183NT♣6=-1
+0.1Round 4🇳🇿 NEW ZEALAND203NT♠Q+1+0
+0.1Round 5🇳🇴 NORWAY103NT♥5-1+12
+0.1Round 8🇺🇸 USA2174♥♠2+1+0
-0.0Round 16🇭🇺 HUNGARY172NT♣2=-7
-0.1Round 1🇨🇳 CHINA105♦♠Q-1-6
-0.1Round 3🇺🇸 USA122♥♣8-1+5
-0.1Round 12🇯🇵 JAPAN204♥♠K+1+0
-0.1Round 13🇸🇬 SINGAPORE134♠♥8+1+0
-0.1Round 15🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND14♠♣T+1+0
-0.2Round 6🇵🇱 POLAND235♦♥Q-1+6
-0.2Round 6🇵🇱 POLAND273NT♠7=+0
-0.3Round 7🇦🇺 AUSTRALIA41NT♥3=-5
-0.3Round 14🇫🇷 FRANCE214NT♥9+2-1
-0.3Round 15🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND71♠♣6+2+0
-0.4Round 16🇭🇺 HUNGARY203NT♦9+2+0
-0.5Round 6🇵🇱 POLAND154♠♥7+1+0
-0.6Round 6🇵🇱 POLAND253♣♠6-1-2
-0.6Round 10🇨🇦 CANADA244♠♥A+2+11
-0.6Round 11🇮🇱 ISRAEL34♥♠T+1+0
-0.7Round 10🇨🇦 CANADA233NT♠5+1-1
-0.7Round 16🇭🇺 HUNGARY163NT♥2+2-1
-0.7Round 16🇭🇺 HUNGARY214♠♥2+1+0
-0.8Round 5🇳🇴 NORWAY63♠♣T-1+1
-0.8Round 8🇺🇸 USA2261NT♥J+3-9
-0.8Round 10🇨🇦 CANADA152♥♥5-1-5
-0.8Round 10🇨🇦 CANADA192NT♥9+1+0
-0.9Round 14🇫🇷 FRANCE263NT♥A+2-1
-0.9Round 19🇩🇰 DENMARK132♠♥A+1-10
-1.0Round 19🇩🇰 DENMARK32♦♥6+1-1
-1.1Round 5🇳🇴 NORWAY133NT♦7+3-13
-1.2Round 1🇨🇳 CHINA25♥♠4+1+12
-1.2Round 10🇨🇦 CANADA253NT♣J+2-1
-1.2Round 19🇩🇰 DENMARK21NT♣T=-1
-1.3Round 7🇦🇺 AUSTRALIA54♥♠A-1+2
-1.3Round 10🇨🇦 CANADA263♦♣Q-2-3
-1.4Round 1🇨🇳 CHINA84♠♦A-1+2
-1.4Round 3🇺🇸 USA191NT♠6-2-1
-1.4Round 5🇳🇴 NORWAY13NT♥A=+0
-1.4Round 12🇯🇵 JAPAN174♥♦K+1-1
-1.4Round 13🇸🇬 SINGAPORE142♥♠3+1-1
-1.5Round 11🇮🇱 ISRAEL54♥♠A-2+5
-1.7Round 1🇨🇳 CHINA72♣♥J-1-5
-1.7Round 3🇺🇸 USA1124♠♥A+1+12
-1.7Round 15🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND83♣♣8+1+0
-1.8Round 15🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND64♠♦K+3+14
-1.8Round 19🇩🇰 DENMARK44♥♣J+1+0
-1.9Round 4🇳🇿 NEW ZEALAND224♠♣4+1+0
-1.9Round 13🇸🇬 SINGAPORE23NT♦2-1-10
-1.9Round 14🇫🇷 FRANCE163NT♥5+3-12
-1.9Round 19🇩🇰 DENMARK113NT♣T-1-5
-2.1Round 5🇳🇴 NORWAY144♥♣A=-1
-2.1Round 8🇺🇸 USA2214♠♣A=-3
-2.2Round 4🇳🇿 NEW ZEALAND234♠♠3=+13
-2.2Round 6🇵🇱 POLAND195♥♠A=+0
-2.2Round 17🇳🇱 NETHERLANDS13NT♠5=+2
-2.4Round 3🇺🇸 USA134♠♣8+2-1
-2.4Round 8🇺🇸 USA2154♠♣A+1+0
-2.4Round 16🇭🇺 HUNGARY243NT♠3+1+0
-2.5Round 7🇦🇺 AUSTRALIA142♦♥7=-6
-2.5Round 17🇳🇱 NETHERLANDS83NT♠5+1-4
-2.5Round 19🇩🇰 DENMARK143♠♠2-1-4
-2.6Round 6🇵🇱 POLAND223NT♦6=+0
-2.8Round 16🇭🇺 HUNGARY223♠♣A-1-5
-2.8Round 16🇭🇺 HUNGARY273NT♥4+2+0
-3.0Round 10🇨🇦 CANADA284♠♦6-2+0
-3.1Round 6🇵🇱 POLAND185♣♦Q=+2
-3.1Round 15🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND44♠x♣K-1-7
-3.1Round 19🇩🇰 DENMARK74♦♥K+1-1
-3.2Round 13🇸🇬 SINGAPORE44♥♣T+2-1
-3.2Round 14🇫🇷 FRANCE194♥♥8=-7
-3.2Round 19🇩🇰 DENMARK106♣♠5-1-13
-3.3Round 6🇵🇱 POLAND214♥♠4-1-5
-3.4Round 3🇺🇸 USA162♠♥3-2-2
-3.6Round 11🇮🇱 ISRAEL124♥♠A+2+13
-3.6Round 11🇮🇱 ISRAEL144♥♣7+2-1
-3.7Round 4🇳🇿 NEW ZEALAND263NT♣K-1-6
-3.7Round 11🇮🇱 ISRAEL11NT♥A-4-6
-3.7Round 12🇯🇵 JAPAN262♥♦6-3+8
-3.8Round 10🇨🇦 CANADA173NT♠T+1+0
-3.8Round 11🇮🇱 ISRAEL24♠♥A-2+0
-3.8Round 14🇫🇷 FRANCE173NT♠9-1-5
-3.8Round 14🇫🇷 FRANCE223NT♥3=-7
-3.9Round 5🇳🇴 NORWAY23NT♦7-2-6
-3.9Round 8🇺🇸 USA2283♥♣K-1-5
-3.9Round 11🇮🇱 ISRAEL63NT♠4=+0
-3.9Round 11🇮🇱 ISRAEL73NT♣2+2-2
-4.2Round 17🇳🇱 NETHERLANDS54♥♦A-1-10
-4.3Round 16🇭🇺 HUNGARY194♠♥3+1+0
-4.4Round 11🇮🇱 ISRAEL113NT♠J-1-8
-4.6Round 3🇺🇸 USA1116NT♥J=+0
-4.6Round 17🇳🇱 NETHERLANDS33NT♠4-1-6
-4.7Round 7🇦🇺 AUSTRALIA14♥♠7-2-9
-4.8Round 7🇦🇺 AUSTRALIA74♠♠A=+0
-4.8Round 7🇦🇺 AUSTRALIA114♥♦A-2-6
-5.2Round 7🇦🇺 AUSTRALIA94♠♥J-3-9
-5.4Round 7🇦🇺 AUSTRALIA84♠♠A+1-8
-5.5Round 8🇺🇸 USA2254♣♦J-2+6
-5.7Round 3🇺🇸 USA174♠♦8-1-6
-6.2Round 13🇸🇬 SINGAPORE74♠♣7-2-8
-6.4Round 14🇫🇷 FRANCE204♠♥A-1-11
-6.4Round 14🇫🇷 FRANCE276♠♣A=-12
-6.5Round 11🇮🇱 ISRAEL103NT♣J+2-1
-6.5Round 16🇭🇺 HUNGARY284♠♥K-1-10
-6.6Round 11🇮🇱 ISRAEL42♦x♦5-2-8
-6.7Round 8🇺🇸 USA2184♥♣4=-8
-6.8Round 1🇨🇳 CHINA95♦x♠2-1-5
-7.2Round 15🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND103♦♠7-2-13
-7.4Round 1🇨🇳 CHINA144♠♥K-1-10
-7.4Round 5🇳🇴 NORWAY43♠♥A-2-8
-7.5Round 19🇩🇰 DENMARK64♥♠A-2-13
-7.7Round 3🇺🇸 USA153NT♣6+1-10
-7.9Round 7🇦🇺 AUSTRALIA24♥♠A-3-11
-8.2Round 17🇳🇱 NETHERLANDS145♠x♣A-1-9
-8.4Round 4🇳🇿 NEW ZEALAND273NT♠4=-7
-8.6Round 19🇩🇰 DENMARK53NT♠4=-10
-10.4Round 16🇭🇺 HUNGARY237♦♣K=+2
-12.1Round 8🇺🇸 USA2242♥x♥J-4-9