🇸🇬 LUO Cheng · SINGAPORE

91rank
-33.1Butler · 256 bds
-0.13per board
±4.5swing
-0.00vs par /bd · #67/139
-0.17adjusted /bd
Butler per round: -8.6 9.3 7.3 -26.1 -42.9 3.8 -6.8 22.7 17.6 25.9 -9.8 -6.1 -20.8 -20.2 -0.5 22.1by round

vs par split: bidding +0.41 · play -0.38

Strength of schedule: opponents averaged -0.04/bd (an average draw) → opponent-adjusted -0.17/bd

Card play — on target: opening leads 89.4% #3 of 139 · declarer play 73.5% #79 of 139 · defence 85.5% #92 of 139

Card play by contract type — on target
vs NTvs a suit
Opening leads100.0% (10)87.5% (56)
Declarer play56.2% (16)81.8% (33)
Defence71.4% (28)89.3% (103)

Opening leads by suit led: ♠ 87.5% (8) · ♥ 86.4% (22) · ♦ 88.2% (17) · ♣ 94.7% (19)

vs par by strain: NT -0.54 (65) · a suit +0.22 (189)

vs par by level: part-score -0.41 (95) · game +0.41 (135) · slam -0.38 (24)

By role: declaring -0.41/bd (-2.37 vs par · 125) · defending +0.14/bd (+2.25 vs par · 131)

By vulnerability: vulnerable -0.49/bd (-0.04 vs par · 128) · not vulnerable +0.23/bd (+0.03 vs par · 128)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1Y.LiuM.Caracci – J.RoblesClosed16-8.6-0.54+0.38
Round 3Y.LiuB.Moss – J.LallOpen16+9.3+0.58+0.94
Round 5Y.LiuM.Chowdhury – S.HaqueOpen16+7.3+0.46+1.12
Round 6Y.LiuA.Samir – R.AmiryOpen16-26.1-1.63-2.56
Round 8Y.LiuA.Lengy – I.BareketOpen16-42.9-2.68-2.12
Round 9Y.LiuA.Robson – T.ForresterOpen16+3.8+0.24+0.25
Round 11Y.LiuR.Katz – N.NickellOpen16-6.8-0.42+0.19
Round 12Y.LiuF.Tiscornia – M.ZoncaOpen16+22.7+1.42+1.31
Round 13Y.LiuG.Chen – Z.ZhuangClosed16+17.6+1.10+1.44
Round 15Y.LiuG.Matushko – J.KhokhlovClosed16+25.9+1.62+2.44
Round 16Y.LiuP.Mathieu – L.SoudanOpen16-9.8-0.61-0.94
Round 17Y.LiuF.Nystrom – J.UpmarkOpen16-6.1-0.38-1.00
Round 20Y.LiuA.Bach – M.CornellOpen16-20.8-1.30-3.62
Round 21Y.LiuB.Brogeland – E.LindqvistOpen16-20.2-1.26+0.50
Round 22Y.LiuK.Mak – W.LaiClosed16-0.5-0.03+0.69
Round 23Y.LiuP.Gill – S.HansClosed16+22.1+1.38+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
+11.3Round 23🇦🇺 AUSTRALIA96♠♥2-1+16
+10.4Round 17🇸🇪 SWEDEN132♦x♣K-3+12
+9.3Round 22🇭🇰 CHINA HONG KONG183NT♠5=+10
+9.1Round 5🇧🇩 BANGLADESH156♥♦5-1+11
+8.8Round 5🇧🇩 BANGLADESH92♦x♣7-3+9
+8.8Round 13🇨🇳 CHINA93NT♣8=+5
+8.5Round 1🇨🇱 CHILE83NT♦5-2+17
+8.4Round 8🇮🇱 ISRAEL194♠♦6+3+17
+8.0Round 6🇪🇬 EGYPT326♣♦A-1+11
+8.0Round 11🇺🇸 USA 1134♥♠3-3+13
+7.9Round 3🇺🇸 USA 273♣x♣K-1+2
+7.7Round 12🇦🇷 ARGENTINA175♣x♠K-1+9
+7.7Round 22🇭🇰 CHINA HONG KONG246♠♥A-1+8
+7.6Round 16🇬🇵 GUADELOUPE213NT♥4=+10
+7.3Round 22🇭🇰 CHINA HONG KONG314♠x♦2-3+0
+7.1Round 12🇦🇷 ARGENTINA194♥x♠7-2+9
+6.6Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND45♥x♠K-3+16
+6.6Round 15🇷🇺 RUSSIA74♥♠10=+10
+6.3Round 12🇦🇷 ARGENTINA273NT♠3+1+1
+6.3Round 13🇨🇳 CHINA42♦♣3+4+17
+6.2Round 21🇳🇴 NORWAY66♠♦2=+0
+5.9Round 17🇸🇪 SWEDEN155♥♦Q+1+14
+5.8Round 23🇦🇺 AUSTRALIA164♠♦A-1+9
+5.5Round 17🇸🇪 SWEDEN105♥♣Q+1+13
+5.5Round 23🇦🇺 AUSTRALIA53NT♠4=+0
+5.3Round 15🇷🇺 RUSSIA13NT♣K-2+11
+5.0Round 5🇧🇩 BANGLADESH143NT♣2-2+6
+5.0Round 13🇨🇳 CHINA74♥♦8-2+8
+4.9Round 22🇭🇰 CHINA HONG KONG174♠x♥J-1+12
+4.8Round 13🇨🇳 CHINA134♠♣K-2+7
+4.8Round 15🇷🇺 RUSSIA32♥♦4+3+9
+4.8Round 23🇦🇺 AUSTRALIA111♠x♠10-2+5
+4.7Round 6🇪🇬 EGYPT264♠♣K=+10
+4.6Round 1🇨🇱 CHILE103NT♥4+2+0
+4.5Round 15🇷🇺 RUSSIA164♣♥J=+6
+4.3Round 22🇭🇰 CHINA HONG KONG216NT♥6=+0
+4.2Round 3🇺🇸 USA 2143♠♣K=+1
+4.2Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND133♠♣7+3-1
+4.2Round 17🇸🇪 SWEDEN164♥♦10-1+12
+4.1Round 3🇺🇸 USA 293♣♠K+1+11
+4.1Round 3🇺🇸 USA 2133NTx♥7-1+8
+4.0Round 15🇷🇺 RUSSIA143NT♥6-2+6
+4.0Round 20🇳🇿 NEW ZEALAND194♥x♦2=+5
+4.0Round 20🇳🇿 NEW ZEALAND322♠♣K+2+1
+4.0Round 21🇳🇴 NORWAY144♥♠K-2+6
+3.9Round 11🇺🇸 USA 194♥♥A=+0
+3.8Round 8🇮🇱 ISRAEL184♠♣K-2+0
+3.8Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND166♦♦9+1+1
+3.7Round 22🇭🇰 CHINA HONG KONG203NT♥4+3+13
+3.6Round 20🇳🇿 NEW ZEALAND224♥♠J+1-10
+3.2Round 15🇷🇺 RUSSIA44♠♠3-2+3
+3.1Round 5🇧🇩 BANGLADESH33♦♣Q-2+9
+3.1Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND24♠♥2+3+10
+3.1Round 16🇬🇵 GUADELOUPE313♠♥2-1+8
+3.0Round 1🇨🇱 CHILE122♥♦4=+6
+3.0Round 3🇺🇸 USA 233NT♠4=+7
+3.0Round 11🇺🇸 USA 112♥♦7-1+4
+3.0Round 15🇷🇺 RUSSIA123♣♥6-2+5
+2.9Round 11🇺🇸 USA 182♥♠Q=+6
+2.9Round 17🇸🇪 SWEDEN32♠♣Q-1+5
+2.9Round 21🇳🇴 NORWAY113NT♥2+4+10
+2.8Round 15🇷🇺 RUSSIA113NT♠2+4-10
+2.8Round 23🇦🇺 AUSTRALIA22♠♣K-1+5
+2.7Round 12🇦🇷 ARGENTINA262♠♥7-1+5
+2.7Round 15🇷🇺 RUSSIA132♣♣10+1+10
+2.7Round 23🇦🇺 AUSTRALIA83♦♣9-3+2
+2.6Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND56♠♦8+1+11
+2.5Round 16🇬🇵 GUADELOUPE276♥♦2=+0
+2.4Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND93NT♥K+1-1
+2.4Round 13🇨🇳 CHINA54♥♠Q+1+0
+2.3Round 1🇨🇱 CHILE152♥♦K=+0
+2.3Round 13🇨🇳 CHINA24♠♠4+1+0
+2.2Round 23🇦🇺 AUSTRALIA143NT♦4-1+10
+2.1Round 5🇧🇩 BANGLADESH43♣♥9=+0
+2.1Round 11🇺🇸 USA 1142♠♠Q=+5
+2.1Round 16🇬🇵 GUADELOUPE283♣♠A=+0
+2.0Round 6🇪🇬 EGYPT233♥♠Q=+0
+2.0Round 13🇨🇳 CHINA114♠♣K+1+0
+2.0Round 13🇨🇳 CHINA143NT♥5=-1
+1.9Round 8🇮🇱 ISRAEL253NT♥9+1+0
+1.9Round 17🇸🇪 SWEDEN144♥♠Q+1+0
+1.8Round 15🇷🇺 RUSSIA63NT♥J=+7
+1.8Round 17🇸🇪 SWEDEN113♦♦6+1+0
+1.7Round 11🇺🇸 USA 1163NT♥9+2+2
+1.7Round 12🇦🇷 ARGENTINA217♠♠6=+0
+1.5Round 12🇦🇷 ARGENTINA224♥♥2-1+5
+1.5Round 15🇷🇺 RUSSIA10Pass+4
+1.4Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND154♠♦A-1-6
+1.3Round 1🇨🇱 CHILE74♠x♣K-2+4
+1.3Round 11🇺🇸 USA 1112NT♦3=+1
+1.2Round 8🇮🇱 ISRAEL263♥♠6-2-2
+1.2Round 12🇦🇷 ARGENTINA294♥♦J+2+13
+1.2Round 13🇨🇳 CHINA62♠♣2-1+5
+1.2Round 16🇬🇵 GUADELOUPE303♣♦A-1-5
+1.1Round 11🇺🇸 USA 1155♦♠7+1+14
+1.1Round 13🇨🇳 CHINA13♥♣5-1+4
+1.1Round 16🇬🇵 GUADELOUPE294♠♥K+1+0
+1.1Round 17🇸🇪 SWEDEN12♠♠3-1+4
+1.1Round 20🇳🇿 NEW ZEALAND285♦x♦8-4-12
+1.0Round 5🇧🇩 BANGLADESH22NT♥7-1+5
+1.0Round 5🇧🇩 BANGLADESH84♠♣10=+0
+1.0Round 5🇧🇩 BANGLADESH102♠♥K+2+10
+1.0Round 11🇺🇸 USA 124♥♦K-1+5
+1.0Round 20🇳🇿 NEW ZEALAND292♥♠2=+11
+0.9Round 16🇬🇵 GUADELOUPE172♠♣10=+0
+0.9Round 16🇬🇵 GUADELOUPE223NT♣8+1+0
+0.9Round 23🇦🇺 AUSTRALIA124♠♥3+2+1
+0.8Round 1🇨🇱 CHILE23NT♠4+2+0
+0.8Round 1🇨🇱 CHILE34♠♥5+3+12
+0.8Round 12🇦🇷 ARGENTINA324♠♥2+1+0
+0.8Round 23🇦🇺 AUSTRALIA74♠♥7-1+6
+0.7Round 1🇨🇱 CHILE65♦♠K-1+6
+0.7Round 3🇺🇸 USA 264♦♥3-2-5
+0.7Round 3🇺🇸 USA 2155♣♥J+1-1
+0.7Round 12🇦🇷 ARGENTINA304♠♥K=+3
+0.6Round 3🇺🇸 USA 212♣♠K=-2
+0.6Round 5🇧🇩 BANGLADESH71NT♠4=-2
+0.5Round 12🇦🇷 ARGENTINA233NT♣4=+0
+0.5Round 20🇳🇿 NEW ZEALAND252♠♣6+3+0
+0.4Round 6🇪🇬 EGYPT183NT♦6=+1
+0.4Round 21🇳🇴 NORWAY42♠♥2=+0
+0.3Round 6🇪🇬 EGYPT215♦x♣A-1-6
+0.3Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND84♠♦4+1+0
+0.3Round 12🇦🇷 ARGENTINA314♠♦8=+1
+0.3Round 13🇨🇳 CHINA32♠♦K+1+0
+0.3Round 16🇬🇵 GUADELOUPE202♥♣K+1+1
+0.2Round 13🇨🇳 CHINA84♠♣A+1+0
+0.2Round 22🇭🇰 CHINA HONG KONG293NT♥4+2+0
+0.1Round 1🇨🇱 CHILE51NT♦Q=-1
+0.1Round 8🇮🇱 ISRAEL234♥♦6+3+12
+0.0Round 3🇺🇸 USA 224♥♦5=+0
+0.0Round 3🇺🇸 USA 2114♠♣K+2+11
+0.0Round 8🇮🇱 ISRAEL204♠♥Q+1-1
+0.0Round 8🇮🇱 ISRAEL212♠♥8-1-2
+0.0Round 8🇮🇱 ISRAEL323NT♠5+1+0
+0.0Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND102♥♣7+1+0
-0.0Round 11🇺🇸 USA 1124♠♥3+1-13
+0.0Round 15🇷🇺 RUSSIA56♠♣A=+0
+0.0Round 20🇳🇿 NEW ZEALAND312♥♦3-2-1
-0.0Round 22🇭🇰 CHINA HONG KONG324♥♣10=+0
-0.1Round 20🇳🇿 NEW ZEALAND304♥♦7+1+0
-0.2Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND63♥x♠K-1+1
-0.2Round 17🇸🇪 SWEDEN43NT♠5-1-6
-0.3Round 3🇺🇸 USA 2163NT♥3+2+0
-0.4Round 12🇦🇷 ARGENTINA184♥♥2+1+0
-0.4Round 22🇭🇰 CHINA HONG KONG234♥♦10+1+0
-0.4Round 22🇭🇰 CHINA HONG KONG263♦♠5-1+1
-0.5Round 6🇪🇬 EGYPT314♠♥Q=-1
-0.5Round 8🇮🇱 ISRAEL303NT♥3+2-1
-0.5Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND12♠♥2-1-2
-0.5Round 20🇳🇿 NEW ZEALAND213NT♠6=+0
-0.5Round 23🇦🇺 AUSTRALIA104♥♦7-2-9
-0.6Round 6🇪🇬 EGYPT192♠♦5-2-2
-0.6Round 6🇪🇬 EGYPT224♠♥3-1+5
-0.6Round 20🇳🇿 NEW ZEALAND183♣♣5-1+4
-0.7Round 1🇨🇱 CHILE162♦♦2+1-7
-0.7Round 3🇺🇸 USA 246♥♣6=-13
-0.7Round 23🇦🇺 AUSTRALIA32NT♠3-2-5
-0.9Round 5🇧🇩 BANGLADESH163NT♠Q-3-2
-0.9Round 12🇦🇷 ARGENTINA201NT♣Q-2-9
-0.9Round 21🇳🇴 NORWAY32♠♦5-2+1
-1.0Round 8🇮🇱 ISRAEL272♠♥5-1-2
-1.0Round 17🇸🇪 SWEDEN123♦♣4+1-10
-1.0Round 23🇦🇺 AUSTRALIA42NT♥A+2-2
-1.1Round 22🇭🇰 CHINA HONG KONG304♠♣5=+0
-1.2Round 11🇺🇸 USA 143♦♥6+2+10
-1.3Round 21🇳🇴 NORWAY13♦♥4-1-3
-1.3Round 21🇳🇴 NORWAY91NT♥3-1+2
-1.5Round 5🇧🇩 BANGLADESH61NT♣2-1-1
-1.5Round 6🇪🇬 EGYPT273♥♠Q-2+1
-1.5Round 12🇦🇷 ARGENTINA283♥♠K-1-5
-1.6Round 15🇷🇺 RUSSIA151NT♣8+1-1
-1.6Round 16🇬🇵 GUADELOUPE246♠♣A=+0
-1.6Round 23🇦🇺 AUSTRALIA66♠♥10=-11
-1.7Round 6🇪🇬 EGYPT253♥♣J-2-2
-1.7Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND35♣♥8=+0
-1.7Round 16🇬🇵 GUADELOUPE232♦♥A=-5
-1.7Round 23🇦🇺 AUSTRALIA12♥♣K+1+0
-1.8Round 3🇺🇸 USA 2123♣x♠4-3-13
-1.9Round 21🇳🇴 NORWAY132♠♣K-1-6
-2.0Round 15🇷🇺 RUSSIA83NTx♥J-1-5
-2.0Round 17🇸🇪 SWEDEN62♥♠2=-7
-2.0Round 20🇳🇿 NEW ZEALAND175♣x♠5-3-2
-2.1Round 5🇧🇩 BANGLADESH14♥♣10-2-11
-2.1Round 8🇮🇱 ISRAEL173NT♥A-1-5
-2.1Round 21🇳🇴 NORWAY84♠♦A-1+2
-2.2Round 21🇳🇴 NORWAY161NT♥A=-5
-2.3Round 1🇨🇱 CHILE143NT♠4-1-10
-2.4Round 21🇳🇴 NORWAY54♥♣9+1+0
-2.5Round 12🇦🇷 ARGENTINA244♥♣3+1+0
-2.5Round 12🇦🇷 ARGENTINA252♠♦5=-11
-2.6Round 5🇧🇩 BANGLADESH53NT♥2+1+0
-2.7Round 17🇸🇪 SWEDEN84♥♣K=-11
-2.7Round 21🇳🇴 NORWAY154♠♥3=+0
-2.8Round 11🇺🇸 USA 135♣♠5-1-10
-2.8Round 16🇬🇵 GUADELOUPE261NT♠4=-5
-2.9Round 5🇧🇩 BANGLADESH113♠♥Q-2-5
-2.9Round 20🇳🇿 NEW ZEALAND242♠♥3+1-6
-3.0Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND143NT♥2=+1
-3.0Round 21🇳🇴 NORWAY75♦♠K+1+13
-3.1Round 1🇨🇱 CHILE133NT♥4+2-17
-3.1Round 6🇪🇬 EGYPT282♠♣4+4-5
-3.2Round 1🇨🇱 CHILE111NT♠Q=+0
-3.2Round 17🇸🇪 SWEDEN53NT♦7-2-13
-3.3Round 11🇺🇸 USA 15Pass-12
-3.4Round 1🇨🇱 CHILE92♠♦8-1-4
-3.6Round 3🇺🇸 USA 285♣♥4-3+0
-3.6Round 8🇮🇱 ISRAEL224♦♥9+1-7
-3.7Round 3🇺🇸 USA 253NT♥5+2+0
-3.7Round 23🇦🇺 AUSTRALIA152♣♦2-1-5
-3.8Round 13🇨🇳 CHINA103NT♣6-2-8
-3.8Round 13🇨🇳 CHINA163♠♥A+2-6
-3.8Round 21🇳🇴 NORWAY23NT♠8=-2
-3.9Round 20🇳🇿 NEW ZEALAND276♥♣A=-10
-4.0Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND123♠♣5-1-6
-4.0Round 13🇨🇳 CHINA123♠♦A-2-2
-4.3Round 15🇷🇺 RUSSIA93♦♣3-1-8
-4.6Round 6🇪🇬 EGYPT294♥♦3=-10
-4.6Round 16🇬🇵 GUADELOUPE193NT♥Q=+1
-4.8Round 16🇬🇵 GUADELOUPE254♠♥K=-8
-4.8Round 21🇳🇴 NORWAY104♥x♥2=-4
-4.9Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND113♥♣5+1-7
-5.0Round 1🇨🇱 CHILE14♠♦A=+0
-5.3Round 22🇭🇰 CHINA HONG KONG272♠♦7-2-7
-5.5Round 23🇦🇺 AUSTRALIA134♠x♣9-1-7
-5.6Round 6🇪🇬 EGYPT203NT♣K-1-12
-5.7Round 22🇭🇰 CHINA HONG KONG225♥x♦K-1-11
-5.9Round 3🇺🇸 USA 2106♦x♠J-1+9
-5.9Round 6🇪🇬 EGYPT245♦x♦6-1-11
-6.3Round 9🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND74♥♣6-2-13
-6.4Round 15🇷🇺 RUSSIA22♠x♦K-2-8
-6.5Round 16🇬🇵 GUADELOUPE324♠♣5-1-10
-6.6Round 5🇧🇩 BANGLADESH126♠♣5=+0
-6.6Round 11🇺🇸 USA 167♠♣K=+0
-6.7Round 20🇳🇿 NEW ZEALAND264♥♦J+2-13
-6.7Round 22🇭🇰 CHINA HONG KONG194♥♣3-1-10
-7.0Round 6🇪🇬 EGYPT306♥♦8-1-11
-7.2Round 13🇨🇳 CHINA153♦♦2=-6
-7.3Round 11🇺🇸 USA 1104♥♠A=-9
-7.3Round 21🇳🇴 NORWAY123NT♥6-1-6
-7.5Round 16🇬🇵 GUADELOUPE183NT♥2+2-2
-7.8Round 5🇧🇩 BANGLADESH134♠♦9+1-11
-8.7Round 22🇭🇰 CHINA HONG KONG287♥♣3=+0
-8.9Round 17🇸🇪 SWEDEN93NT♥2-1-10
-9.0Round 20🇳🇿 NEW ZEALAND234♠♥2-1-12
-9.3Round 20🇳🇿 NEW ZEALAND203NT♥9-2-13
-9.6Round 17🇸🇪 SWEDEN24♠♥K=-7
-9.6Round 22🇭🇰 CHINA HONG KONG254♠x♣A=-5
-10.3Round 8🇮🇱 ISRAEL282♣♥K-2-12
-10.4Round 6🇪🇬 EGYPT174♥x♠K-4-9
-10.6Round 11🇺🇸 USA 172♥x♦A=-13
-11.3Round 8🇮🇱 ISRAEL247NTx♣6-1-14
-12.2Round 17🇸🇪 SWEDEN72♥x♣K-5-12
-13.0Round 1🇨🇱 CHILE46NT♠9=+0
-13.7Round 8🇮🇱 ISRAEL296NT♣2=+0
-15.8Round 8🇮🇱 ISRAEL317♦♥A-2-17