🇺🇸 CHOW Helen · USA1

29rank
+35.2Butler · 180 bds
+0.20per board
±4.7swing
-0.06vs par /bd · #32/66
+0.22adjusted /bd
Butler per round: -24.4 23.9 9 -18.7 9.9 20.3 18.9 -3.1 -3.8 22.6 -18.8 -17.3 21.2 -7.6 3.1by round

vs par split: bidding -0.44 · play +0.38

Strength of schedule: opponents averaged +0.02/bd (an average draw) → opponent-adjusted +0.22/bd

Card play — on target: opening leads 85.4% #14 of 66 · declarer play 77.8% #27 of 66 · defence 85.0% #29 of 66

Bidding activity — not a pass: 45.1% #19 of 66 (229/508)

Card play by contract type — on target
vs NTvs a suit
Opening leads100.0% (4)83.8% (37)
Declarer play71.4% (7)78.9% (38)
Defence68.4% (19)90.2% (61)

Opening leads by suit led: ♠ 90.0% (10) · ♥ 72.7% (11) · ♦ 100.0% (8) · ♣ 83.3% (12)

vs par by strain: NT +0.16 (37) · a suit -0.11 (143)

vs par by level: part-score +0.37 (78) · game -0.19 (91) · slam -2.00 (11)

By role: declaring -0.11/bd (-2.66 vs par · 100) · defending +0.57/bd (+3.20 vs par · 80)

By vulnerability: vulnerable -0.22/bd (-1.02 vs par · 90) · not vulnerable +0.62/bd (+0.91 vs par · 90)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1N.QianJ.Udomsrirungruang – M.JohnstoneClosed12-24.4-2.03-4.08
Round 2N.QianE.Dalpozzo – S.CapobiancoClosed12+23.9+1.99+3.08
Round 5N.QianJ.Hegedus – Z.BekoClosed12+9.0+0.75-4.00
Round 6N.QianC.Pedersen – L.JacobsenClosed12-18.7-1.56-0.25
Round 7N.QianR.Ma – C.GeOpen12+9.9+0.83+0.83
Round 9N.QianS.Sjodal – T.HaugeClosed12+20.3+1.69+2.33
Round 10N.QianJ.Zalewska – M.NiklausOpen12+18.9+1.57+2.00
Round 11N.QianC.Bedford – I.La ChapelleClosed12-3.1-0.26+0.17
Round 13N.QianM.Lejeune – M.SprinkhuizenOpen12-3.8-0.32+0.33
Round 14N.QianZ.Davide – C.BrusottiOpen12+22.6+1.88+1.58
Round 15N.QianJ.Sigsgaard – E.RosthoejOpen12-18.8-1.57-3.92
Round 17N.QianJ.Hegedus – Z.BekoOpen12-17.3-1.44-1.00
Round 19N.QianM.Gryzlo – M.KapalaOpen12+21.2+1.77+3.42
Round 20N.QianC.Zhang – Y.ShaoOpen12-7.6-0.63-0.50
Round 22N.QianA.Kjensli – K.BrekkeClosed12+3.1+0.26-0.83

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
+14.7Round 9🇳🇴 NORWAY196♥♣7=+14
+12.8Round 19🇵🇱 POLAND193♣x♠3=+13
+12.4Round 2🇮🇹 ITALY236NT♣3-4+18
+11.2Round 14🇮🇹 ITALY103NT♣3-2+13
+9.6Round 7🇨🇳 CHINA223♥♣7+1+10
+8.9Round 17🇭🇺 HUNGARY204♥♦6=+10
+8.5Round 13🇳🇱 NETHERLANDS193♦♠K-4+8
+8.4Round 14🇮🇹 ITALY76♠♥A-1+14
+8.0Round 9🇳🇴 NORWAY244♠♦8+3+10
+8.0Round 13🇳🇱 NETHERLANDS244♥♥A-1+10
+8.0Round 19🇵🇱 POLAND143NT♥T-3+7
+7.6Round 20🇨🇳 CHINA41NTx♦2+1+7
+7.6Round 20🇨🇳 CHINA85♦♥3-1+10
+7.3Round 7🇨🇳 CHINA201NT♥K-3+9
+6.9Round 20🇨🇳 CHINA52NT♠7+2+9
+6.8Round 15🇩🇰 DENMARK144♠♦K-1+10
+6.7Round 14🇮🇹 ITALY125♣♠8-1+12
+6.5Round 5🇭🇺 HUNGARY234NT♠3-1+12
+6.4Round 5🇭🇺 HUNGARY174♥♠K=+8
+6.4Round 7🇨🇳 CHINA195♥♣J-1+2
+6.1Round 14🇮🇹 ITALY93NT♦2+3-16
+5.9Round 13🇳🇱 NETHERLANDS142♠♣A+2-4
+5.9Round 14🇮🇹 ITALY63♠♦A+1+11
+5.7Round 10🇵🇱 POLAND25♠x♦8+2+8
+5.5Round 10🇵🇱 POLAND64♠♠T-2+11
+5.3Round 2🇮🇹 ITALY222♠♦A+3+10
+5.3Round 6🇩🇰 DENMARK64♠♦3-3+12
+4.8Round 22🇳🇴 NORWAY46♠♦2=-13
+4.7Round 19🇵🇱 POLAND202♣♠T-2+7
+4.6Round 10🇵🇱 POLAND93NT♠7+1+0
+4.6Round 19🇵🇱 POLAND212♦x♠A-1+11
+4.5Round 9🇳🇴 NORWAY173NT♣Q-3+7
+4.5Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND183NT♠Q+2+1
+3.9Round 22🇳🇴 NORWAY123NT♣3-1+5
+3.8Round 5🇭🇺 HUNGARY156♠♣T=-11
+3.6Round 1🇺🇸 USA223NT♠5-1+6
+3.6Round 2🇮🇹 ITALY216♥♠A=+1
+3.5Round 17🇭🇺 HUNGARY234♠♥J-1+6
+3.4Round 2🇮🇹 ITALY174♥♥8+1+0
+3.3Round 7🇨🇳 CHINA182♥♦3+2+6
+3.3Round 10🇵🇱 POLAND103NT♠8=-2
+3.3Round 19🇵🇱 POLAND153♥♦3-2+7
+3.2Round 9🇳🇴 NORWAY204♥♦3=-1
+3.2Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND223♠♦K-1+8
+3.2Round 15🇩🇰 DENMARK244♥♣A-2+5
+3.1Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND173NT♣3=-1
+3.0Round 5🇭🇺 HUNGARY132♠♥6=+6
+2.9Round 10🇵🇱 POLAND115♣♥Q+1+7
+2.8Round 10🇵🇱 POLAND14♥♣6-3-6
+2.6Round 5🇭🇺 HUNGARY243♥♠2=+1
+2.4Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND153♥♠K-1+6
+2.4Round 19🇵🇱 POLAND173♠♦K-1-2
+2.4Round 19🇵🇱 POLAND245♣♥Q+1+0
+2.1Round 14🇮🇹 ITALY25♦♥6+2+10
+1.9Round 22🇳🇴 NORWAY82♥♣8-1+5
+1.8Round 1🇺🇸 USA2121NT♥5+1+0
+1.7Round 10🇵🇱 POLAND124♠♥A=+0
+1.6Round 1🇺🇸 USA2113NT♣T+2-11
+1.6Round 2🇮🇹 ITALY133NT♠6+1+1
+1.5Round 9🇳🇴 NORWAY213NT♣5-1+12
+1.5Round 17🇭🇺 HUNGARY163♠♦5=+0
+1.5Round 22🇳🇴 NORWAY95♥♣K=+8
+1.4Round 2🇮🇹 ITALY191NT♥T=+5
+1.4Round 10🇵🇱 POLAND74♥♦A=+0
+1.4Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND244♥♦A-1+4
+1.4Round 19🇵🇱 POLAND183♦♥A=+0
+1.3Round 14🇮🇹 ITALY113♠♥9=-6
+1.3Round 20🇨🇳 CHINA32♥♥2+1+1
+1.1Round 9🇳🇴 NORWAY231♠♦7+2+1
+1.0Round 6🇩🇰 DENMARK73♠♥T=+0
+1.0Round 6🇩🇰 DENMARK122♥♣T=+0
+1.0Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND212♠♦6=+5
+0.9Round 5🇭🇺 HUNGARY164♦♠A=-9
+0.8Round 1🇺🇸 USA284♠♥J=+0
+0.8Round 2🇮🇹 ITALY202♠♦7+1+0
+0.8Round 15🇩🇰 DENMARK193NT♠4+1-12
+0.8Round 22🇳🇴 NORWAY23♥♣A-2+1
+0.7Round 5🇭🇺 HUNGARY223NT♠6+4-12
+0.5Round 6🇩🇰 DENMARK32♥♣K-2+0
+0.5Round 7🇨🇳 CHINA134♥♣4-1+6
+0.5Round 7🇨🇳 CHINA214♥♣Q+1+0
+0.5Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND233♣♠K-1+1
+0.5Round 15🇩🇰 DENMARK134♠♥3=+1
+0.5Round 22🇳🇴 NORWAY104♠♦7=+1
+0.4Round 14🇮🇹 ITALY13NT♣4+1-1
+0.2Round 7🇨🇳 CHINA142♣♠K-2+1
+0.2Round 17🇭🇺 HUNGARY193♦♥K=+0
+0.1Round 2🇮🇹 ITALY163NT♠3+2+0
+0.1Round 13🇳🇱 NETHERLANDS182♠♣Q=-1
-0.0Round 5🇭🇺 HUNGARY181NT♣K+1-6
-0.0Round 17🇭🇺 HUNGARY134♠♥6+2+13
-0.0Round 22🇳🇴 NORWAY14♠♠6+1+0
-0.1Round 1🇺🇸 USA214♠♦3=-11
-0.3Round 9🇳🇴 NORWAY153NT♦3+3-1
-0.3Round 17🇭🇺 HUNGARY145♥♠Q=+0
-0.4Round 1🇺🇸 USA245♦♥4=-11
-0.4Round 2🇮🇹 ITALY152♥♦A-2-2
-0.4Round 20🇨🇳 CHINA22♠♣T+2-6
-0.5Round 1🇺🇸 USA293♣♠K+1+7
-0.5Round 2🇮🇹 ITALY145♣♦J-2+5
-0.5Round 2🇮🇹 ITALY242♠♣A+1-1
-0.5Round 6🇩🇰 DENMARK82♠♠A-1+2
-0.5Round 13🇳🇱 NETHERLANDS153♠♦J-1+10
-0.5Round 20🇨🇳 CHINA13NT♠4=+0
-0.6Round 5🇭🇺 HUNGARY214♥♠K+1-11
-0.6Round 6🇩🇰 DENMARK114♥♥7+2+11
-0.6Round 15🇩🇰 DENMARK172♦♥T-2-8
-0.7Round 9🇳🇴 NORWAY143♦♣A-2+5
-0.8Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND201NT♠T-2-2
-0.9Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND144♥♦Q+1+11
-0.9Round 20🇨🇳 CHINA72♥♣5+1-6
-1.0Round 22🇳🇴 NORWAY113♣♠6=-5
-1.1Round 1🇺🇸 USA2104♠♥T=+0
-1.1Round 14🇮🇹 ITALY84♠♣T+1-1
-1.2Round 10🇵🇱 POLAND42♠♦A+1+10
-1.2Round 22🇳🇴 NORWAY73♣♠A+1-10
-1.3Round 9🇳🇴 NORWAY134♥♣3-2-8
-1.3Round 13🇳🇱 NETHERLANDS234♠♦A+1+1
-1.5Round 6🇩🇰 DENMARK22♦♥T=-2
-1.5Round 7🇨🇳 CHINA233♥♣T+1-10
-1.5Round 15🇩🇰 DENMARK226♣♠2=-8
-1.5Round 17🇭🇺 HUNGARY172NT♠2+1-6
-1.6Round 7🇨🇳 CHINA154♠♠T=+0
-1.6Round 13🇳🇱 NETHERLANDS213♠♥K+1+4
-1.7Round 6🇩🇰 DENMARK104♠♣J-1-6
-1.9Round 10🇵🇱 POLAND85♦♣T-1-5
-1.9Round 19🇵🇱 POLAND162♠♥A+1+0
-2.0Round 10🇵🇱 POLAND52♠♦J-2+1
-2.0Round 13🇳🇱 NETHERLANDS224♥♠5-4-11
-2.0Round 15🇩🇰 DENMARK165♣♦A-1-6
-2.1Round 14🇮🇹 ITALY54♠♣4-1-10
-2.2Round 17🇭🇺 HUNGARY223♠♣T+1-7
-2.3Round 20🇨🇳 CHINA123NT♠2+2-1
-2.4Round 5🇭🇺 HUNGARY143♠♥3-2+0
-2.6Round 15🇩🇰 DENMARK234♠♦J-2-3
-2.6Round 22🇳🇴 NORWAY33♥♠T-2-7
-2.6Round 22🇳🇴 NORWAY52♠♥4-1+5
-2.7Round 1🇺🇸 USA251NT♠4+1+0
-2.7Round 19🇵🇱 POLAND232♦♥A+1-1
-2.8Round 9🇳🇴 NORWAY221NT♠7-2-2
-2.8Round 20🇨🇳 CHINA101♠♥5+1+0
-2.9Round 22🇳🇴 NORWAY63♠♣A=+0
-3.0Round 9🇳🇴 NORWAY162♥♠2-1-5
-3.3Round 2🇮🇹 ITALY183♠♦A=+0
-3.5Round 5🇭🇺 HUNGARY205♠♣K+1-13
-3.5Round 15🇩🇰 DENMARK213♥♣3=-1
-3.5Round 19🇵🇱 POLAND224♥x♦K-1-7
-3.6Round 13🇳🇱 NETHERLANDS174♦♣8-1-4
-3.9Round 10🇵🇱 POLAND33♠♣6=+0
-4.0Round 17🇭🇺 HUNGARY243NT♣6-1-5
-4.3Round 7🇨🇳 CHINA172♠♣K-1-11
-4.5Round 6🇩🇰 DENMARK52♣♦5+1-9
-4.5Round 6🇩🇰 DENMARK94♠♣K=-3
-4.5Round 17🇭🇺 HUNGARY214♠♣J-2-6
-4.6Round 9🇳🇴 NORWAY185♠♣5=-4
-4.9Round 7🇨🇳 CHINA243♦♣Q=+0
-4.9Round 13🇳🇱 NETHERLANDS135♠♣4=-4
-5.1Round 13🇳🇱 NETHERLANDS162♦♣7=-5
-5.2Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND163NT♦3+2-8
-5.4Round 20🇨🇳 CHINA94♠♦6-2-7
-5.5Round 15🇩🇰 DENMARK154♠♣J+1-2
-5.6Round 7🇨🇳 CHINA164♥♦2=-3
-5.7Round 6🇩🇰 DENMARK44♣♥K=+0
-5.7Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND133♥♦4+1-18
-5.9Round 15🇩🇰 DENMARK204♠♣A+2-13
-6.5Round 1🇺🇸 USA274♠x♠A-1-7
-6.5Round 20🇨🇳 CHINA113NT♠J=+0
-6.6Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND194♥♦8-1-5
-7.2Round 14🇮🇹 ITALY34♠♣A=-7
-7.3Round 13🇳🇱 NETHERLANDS206♥♦2=+0
-7.5Round 1🇺🇸 USA234♥♠3-3-5
-7.5Round 6🇩🇰 DENMARK12♦♥9+2-8
-8.4Round 5🇭🇺 HUNGARY194♥♦A-1-13
-8.5Round 15🇩🇰 DENMARK183NT♠K-1-10
-8.9Round 17🇭🇺 HUNGARY183NT♥8-1-10
-9.1Round 14🇮🇹 ITALY44♠♣A=+0
-10.0Round 17🇭🇺 HUNGARY156♦♠Q=-7
-10.3Round 19🇵🇱 POLAND134♠x♦A+2+6
-12.2Round 20🇨🇳 CHINA66♦♣A-1-13
-13.4Round 1🇺🇸 USA266♠♠T-1-17