🇸🇬 LEE Derek Cheng Feng · SINGAPORE

101rank
-119.2Butler · 182 bds
-0.65per board
±4.4swing
-0.12vs par /bd · #61/109
-0.65adjusted /bd
Butler per round: -16.8 -7.1 -5.1 6.3 15.2 6.5 -17.7 -25.4 -28 -7.7 -15.4 5.1 -29.1by round

vs par split: bidding +0.21 · play -0.34

Strength of schedule: opponents averaged +0.00/bd (an average draw) → opponent-adjusted -0.65/bd

Card play — on target: opening leads 74.3% #87 of 109 · declarer play 65.5% #94 of 109 · defence 84.3% #52 of 109

Bidding activity — not a pass: 42.0% #76 of 109 (209/498)

Card play by contract type — on target
vs NTvs a suit
Opening leads40.0% (10)88.0% (25)
Declarer play55.6% (18)70.0% (40)
Defence75.9% (29)88.9% (54)

Opening leads by suit led: ♠ 62.5% (8) · ♥ 90.0% (10) · ♦ 57.1% (7) · ♣ 80.0% (10)

vs par by strain: NT -0.16 (57) · a suit -0.10 (125)

vs par by level: part-score -0.07 (81) · game -0.16 (90) · slam -0.18 (11)

By role: declaring -0.39/bd (-2.65 vs par · 99) · defending -0.97/bd (+2.89 vs par · 83)

By vulnerability: vulnerable -0.81/bd (-0.82 vs par · 91) · not vulnerable -0.49/bd (+0.58 vs par · 91)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1K.SiewH.Guo – H.HuangOpen14-16.8-1.20-1.64
Round 2K.SiewC.Zhu – K.JinOpen14-7.1-0.51-0.29
Round 3K.SiewM.Guendel – K.SchwalbachOpen14-5.1-0.36+2.79
Round 5K.SiewJ.Coenen – A.LucassenClosed14+6.3+0.45+0.64
Round 8K.SiewN.Man – S.TsengOpen14+15.2+1.09+2.93
Round 10K.SiewH.Rus – T.KukuljanClosed14+6.5+0.46+1.79
Round 11K.SiewZ.Ferov – D.LazarovClosed14-17.7-1.26-3.57
Round 12K.SiewS.Bahbout – C.DehayeOpen14-25.4-1.81-0.71
Round 13K.SiewA.Mijic – J.DjilovicClosed14-28.0-2.00-2.00
Round 15K.SiewC.Deheeger – P.BedouetOpen14-7.7-0.55+1.64
Round 16K.SiewJ.Nakamaru-Pinder – J.MilneOpen14-15.4-1.10-1.86
Round 18K.SiewM.Simic – B.VelickovicClosed14+5.1+0.36+1.86
Round 19K.SiewS.Kushari – S.RoyOpen14-29.1-2.08-3.14

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
+12.9Round 18🇷🇸 SERBIA285♠♥Q-1+13
+11.3Round 5🇳🇱 NETHERLANDS104♠x♣A=+5
+10.6Round 8🇭🇰 HONG KONG CHINA197♣♠2-1+17
+9.7Round 1🇹🇼 CHINESE TAIPEI83♦x♠5=+9
+8.7Round 3🇩🇪 GERMANY73♠x♥Q=+11
+8.3Round 16🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND284♠x♥K-1+11
+8.3Round 18🇷🇸 SERBIA231NT♦A-1+11
+7.9Round 10🇸🇮 SLOVENIA276♣♦2=+0
+6.9Round 8🇭🇰 HONG KONG CHINA183♦♥K=+9
+6.7Round 10🇸🇮 SLOVENIA285♥♦J-3+9
+6.7Round 11🇧🇬 BULGARIA113NTx♥5-1+9
+6.6Round 15🇫🇷 FRANCE54♠♦Q+1+0
+6.1Round 16🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND152♠♣A+1+7
+5.6Round 18🇷🇸 SERBIA213NT♦K-1+12
+4.9Round 8🇭🇰 HONG KONG CHINA243NT♥2-1+10
+4.8Round 16🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND194♠x♦Q=+4
+4.7Round 3🇩🇪 GERMANY136♣♦J-1+17
+4.6Round 1🇹🇼 CHINESE TAIPEI95♦x♠K-2+0
+4.5Round 10🇸🇮 SLOVENIA194♠♣3-1+5
+4.4Round 10🇸🇮 SLOVENIA213♦♦8+2+1
+4.3Round 10🇸🇮 SLOVENIA222♥♠4=+6
+4.3Round 18🇷🇸 SERBIA162♦♠6-3+1
+4.2Round 2🇨🇳 CHINA224♥♠T+1-10
+4.1Round 1🇹🇼 CHINESE TAIPEI53NT♠5=+0
+3.9Round 5🇳🇱 NETHERLANDS62♥♣2+1+0
+3.8Round 12🇧🇪 BELGIUM193♣x♠K-1-1
+3.7Round 5🇳🇱 NETHERLANDS33♣♠3+1+6
+3.5Round 8🇭🇰 HONG KONG CHINA162♠♦5+1+1
+3.3Round 18🇷🇸 SERBIA192♠♥J+1+0
+3.1Round 5🇳🇱 NETHERLANDS144♥♣A=+1
+2.8Round 16🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND243NT♠2+1+0
+2.8Round 19🇮🇳 INDIA62♥♠A+1-10
+2.7Round 3🇩🇪 GERMANY14♣♦A-1+2
+2.6Round 19🇮🇳 INDIA14♠♥2+3+2
+2.4Round 15🇫🇷 FRANCE71♠♦T+3-1
+2.4Round 18🇷🇸 SERBIA181NT♠T=+6
+2.2Round 8🇭🇰 HONG KONG CHINA232♥♠6=+6
+2.2Round 19🇮🇳 INDIA75♦♥A-1+6
+2.1Round 10🇸🇮 SLOVENIA152♥♦6+1+0
+2.0Round 13🇭🇷 CROATIA72♠♦2+1+0
+2.0Round 15🇫🇷 FRANCE44♠♣K-2+7
+1.8Round 11🇧🇬 BULGARIA34♥♣T+1+0
+1.7Round 3🇩🇪 GERMANY93♥♣5=+0
+1.7Round 15🇫🇷 FRANCE64♠♦K+3-14
+1.7Round 15🇫🇷 FRANCE114♣♥7+2+13
+1.5Round 3🇩🇪 GERMANY102♦♣4+1+11
+1.3Round 2🇨🇳 CHINA172♠♥3-1+4
+1.3Round 5🇳🇱 NETHERLANDS133NT♦4+3+13
+1.3Round 10🇸🇮 SLOVENIA244♠♥K+2+11
+1.3Round 13🇭🇷 CROATIA45♣♣T=+2
+1.3Round 18🇷🇸 SERBIA221NT♦3+2+1
+1.1Round 2🇨🇳 CHINA203NT♦Q-1+6
+1.1Round 5🇳🇱 NETHERLANDS23NT♥9-1+5
+1.1Round 8🇭🇰 HONG KONG CHINA283♥♣K=+0
+1.0Round 2🇨🇳 CHINA213♥♣K=+6
+1.0Round 12🇧🇪 BELGIUM214♠♣A+1+0
+0.8Round 11🇧🇬 BULGARIA144♥♦A+1+0
+0.8Round 19🇮🇳 INDIA43NT♦9=+2
+0.7Round 11🇧🇬 BULGARIA132♦♥2+1-1
+0.7Round 12🇧🇪 BELGIUM262♠♦K+1+10
+0.5Round 2🇨🇳 CHINA253NT♠T+2+10
+0.5Round 12🇧🇪 BELGIUM282♦x♦7-3+4
+0.5Round 18🇷🇸 SERBIA254♥♠K+1+0
+0.4Round 5🇳🇱 NETHERLANDS13NT♥A=+0
+0.4Round 8🇭🇰 HONG KONG CHINA174♥♥8+1+0
+0.4Round 13🇭🇷 CROATIA12♦♥T-1+1
+0.3Round 10🇸🇮 SLOVENIA233NT♦J=+0
+0.3Round 11🇧🇬 BULGARIA83NT♣7+1+0
+0.3Round 12🇧🇪 BELGIUM231NT♠9+1+0
+0.3Round 19🇮🇳 INDIA124♠♦T+1+0
+0.2Round 16🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND184♠♥7-1-9
+0.1Round 2🇨🇳 CHINA234♥♣K+2-13
+0.1Round 12🇧🇪 BELGIUM183♣♠K+2-6
+0.1Round 13🇭🇷 CROATIA21NT♥4+1-7
+0.1Round 13🇭🇷 CROATIA112♣♣2+2-7
+0.1Round 15🇫🇷 FRANCE14♠♣2+1+0
+0.1Round 15🇫🇷 FRANCE125♦♣A+1+11
-0.0Round 12🇧🇪 BELGIUM204♥♠K+1+0
-0.0Round 13🇭🇷 CROATIA84♠♦T+1+11
-0.1Round 3🇩🇪 GERMANY52NT♦3+2-1
-0.1Round 13🇭🇷 CROATIA134♠♦6+1+0
-0.1Round 19🇮🇳 INDIA84♥♦8=+7
-0.2Round 1🇹🇼 CHINESE TAIPEI111NTx♠A-1+0
-0.2Round 2🇨🇳 CHINA243NT♠7+2+0
-0.2Round 2🇨🇳 CHINA284♠♦4+2+13
-0.2Round 16🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND203NT♦2+2+0
-0.3Round 1🇹🇼 CHINESE TAIPEI142NT♥T+2+6
-0.4Round 8🇭🇰 HONG KONG CHINA203NT♥5-2+8
-0.5Round 2🇨🇳 CHINA163NT♠2+4-15
-0.5Round 2🇨🇳 CHINA183NT♠2+1-10
-0.5Round 2🇨🇳 CHINA193♦♠A=+1
-0.5Round 8🇭🇰 HONG KONG CHINA274♥♥7+1+0
-0.6Round 16🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND214♠♥2+1+0
-0.6Round 18🇷🇸 SERBIA153♦♥3-4+7
-0.7Round 1🇹🇼 CHINESE TAIPEI14♠♦2+1+0
-0.7Round 11🇧🇬 BULGARIA93♥♠K-3-1
-0.7Round 13🇭🇷 CROATIA142♥♦4=+0
-0.9Round 3🇩🇪 GERMANY83NT♦2=-1
-0.9Round 10🇸🇮 SLOVENIA253NT♣T+2-1
-0.9Round 15🇫🇷 FRANCE93NT♦9=+2
-1.1Round 5🇳🇱 NETHERLANDS82♦♥5-1-4
-1.3Round 1🇹🇼 CHINESE TAIPEI61NT♠3+1-7
-1.3Round 3🇩🇪 GERMANY142♠x♠7-2+0
-1.4Round 3🇩🇪 GERMANY42♥♠A=-1
-1.4Round 12🇧🇪 BELGIUM174♠♦5+1-1
-1.5Round 2🇨🇳 CHINA262NT♦K=-9
-1.5Round 5🇳🇱 NETHERLANDS54♠♣4=+0
-1.6Round 11🇧🇬 BULGARIA124♥♠K=-13
-1.6Round 18🇷🇸 SERBIA173NT♥2+3-1
-1.7Round 10🇸🇮 SLOVENIA182♠♦Q-1+2
-1.7Round 11🇧🇬 BULGARIA72♠x♥J-2-3
-1.8Round 1🇹🇼 CHINESE TAIPEI25♣♦K=-13
-1.8Round 1🇹🇼 CHINESE TAIPEI35♣♦4+1+13
-1.8Round 5🇳🇱 NETHERLANDS123♠♥2-2-7
-1.8Round 19🇮🇳 INDIA143♠♦2-1-4
-1.9Round 8🇭🇰 HONG KONG CHINA154♥♦J=+1
-1.9Round 15🇫🇷 FRANCE135♥♣4=+0
-1.9Round 18🇷🇸 SERBIA243♦♣K+1+7
-2.0Round 3🇩🇪 GERMANY123NT♥2+2+12
-2.0Round 16🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND252♠♣J=-6
-2.0Round 19🇮🇳 INDIA113NT♣5-1-5
-2.1Round 5🇳🇱 NETHERLANDS72♠♣Q+1+0
-2.2Round 8🇭🇰 HONG KONG CHINA214♠♣A=-3
-2.2Round 12🇧🇪 BELGIUM223♥♣J=+7
-2.2Round 16🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND163NT♥2+2+1
-2.3Round 5🇳🇱 NETHERLANDS113NT♣2=+1
-2.3Round 19🇮🇳 INDIA32♦♥2=-2
-2.4Round 11🇧🇬 BULGARIA102♣x♦9=-10
-2.5Round 11🇧🇬 BULGARIA13NT♣6+1+0
-2.5Round 13🇭🇷 CROATIA33NT♠3+1+0
-2.6Round 3🇩🇪 GERMANY21♥x♦T=-2
-2.7Round 8🇭🇰 HONG KONG CHINA254♣♣2-1+8
-2.7Round 10🇸🇮 SLOVENIA164NT♦J-1+1
-2.7Round 10🇸🇮 SLOVENIA262NT♣2-2-3
-2.7Round 16🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND223♠♥2=-1
-2.8Round 2🇨🇳 CHINA274♠♦K=+0
-2.8Round 13🇭🇷 CROATIA62♥x♥2-1-2
-2.9Round 1🇹🇼 CHINESE TAIPEI72NT♠K=+0
-3.0Round 5🇳🇱 NETHERLANDS41NT♠2-3-4
-3.2Round 8🇭🇰 HONG KONG CHINA262♠♥K+1-10
-3.2Round 12🇧🇪 BELGIUM153♠♥J-1-4
-3.2Round 13🇭🇷 CROATIA52NT♥4-1-4
-3.2Round 13🇭🇷 CROATIA104♥♥2-1-12
-3.3Round 15🇫🇷 FRANCE82NT♠2-1-5
-3.4Round 1🇹🇼 CHINESE TAIPEI122♠♥9+2-10
-3.4Round 3🇩🇪 GERMANY116NT♥4=+0
-3.5Round 8🇭🇰 HONG KONG CHINA221NT♥6-1-6
-3.5Round 15🇫🇷 FRANCE23♣♠5+1+0
-3.5Round 15🇫🇷 FRANCE34♠♣8+1+0
-3.7Round 3🇩🇪 GERMANY34♠♣8+2-1
-3.7Round 11🇧🇬 BULGARIA41NT♣Q+1-1
-3.7Round 11🇧🇬 BULGARIA52♥♠K=-9
-3.7Round 12🇧🇪 BELGIUM241NT♥2-1-4
-3.8Round 16🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND236♥♦7=-13
-4.1Round 15🇫🇷 FRANCE102NT♥K=+10
-4.2Round 19🇮🇳 INDIA91NT♠2+1+0
-4.6Round 11🇧🇬 BULGARIA63NT♥6-1-10
-4.6Round 19🇮🇳 INDIA21NT♥7-1-4
-5.1Round 15🇫🇷 FRANCE144♥♥A+1+0
-5.3Round 1🇹🇼 CHINESE TAIPEI103♦♦8+1+0
-5.6Round 10🇸🇮 SLOVENIA173NT♠3+1+0
-5.6Round 12🇧🇪 BELGIUM167♦♦6=+2
-5.8Round 18🇷🇸 SERBIA275♠♥J-2-5
-5.9Round 16🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND264♥♣2=+0
-6.5Round 1🇹🇼 CHINESE TAIPEI134♠♠J-2-8
-6.5Round 19🇮🇳 INDIA134♠♠2-1-12
-6.7Round 5🇳🇱 NETHERLANDS95♥x♦8-1-7
-6.9Round 13🇭🇷 CROATIA97NT♥4=+0
-6.9Round 19🇮🇳 INDIA106NT♥4-3-14
-7.1Round 11🇧🇬 BULGARIA24♠♥A+2-11
-7.5Round 12🇧🇪 BELGIUM253♥♣8-1-6
-8.2Round 12🇧🇪 BELGIUM276♣♠4+1-11
-8.9Round 16🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND274♠♥K-1-11
-9.0Round 3🇩🇪 GERMANY61♠x♥4-2-8
-9.1Round 2🇨🇳 CHINA156♠♥K=+13
-9.4Round 19🇮🇳 INDIA53NT♣2=-10
-10.7Round 18🇷🇸 SERBIA203NT♥3-1-13
-11.0Round 1🇹🇼 CHINESE TAIPEI46♠♦7-1-13
-11.3Round 16🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND173♣x♦A-4-9
-11.4Round 10🇸🇮 SLOVENIA205♣x♥A=-6
-12.5Round 13🇭🇷 CROATIA124♥♦3=-10
-12.9Round 18🇷🇸 SERBIA264♥xx♠5+1-13