🇺🇸 HWANG Katherine · USA2

61rank
-123.9Butler · 204 bds
-0.61per board
±5.0swing
-0.70vs par /bd · #56/66
-0.50adjusted /bd
Butler per round: 10.9 -6.3 3.4 -6.2 -8.1 -8.5 -41.7 -15.5 13.5 -25.5 -27.4 -3.7 -3.9 -15 -19.1 13.3 15.9by round

vs par split: bidding -0.29 · play -0.40

Strength of schedule: opponents averaged +0.11/bd (a tough draw) → opponent-adjusted -0.50/bd

Card play — on target: opening leads 81.8% #33 of 66 · declarer play 77.3% #30 of 66 · defence 73.6% #56 of 66

Bidding activity — not a pass: 40.1% #53 of 66 (228/568)

Card play by contract type — on target
vs NTvs a suit
Opening leads61.1% (18)91.9% (37)
Declarer play50.0% (12)87.5% (32)
Defence65.5% (29)76.5% (81)

Opening leads by suit led: ♠ 86.7% (15) · ♥ 80.0% (10) · ♦ 80.0% (20) · ♣ 80.0% (10)

vs par by strain: NT -0.77 (51) · a suit -0.67 (153)

vs par by level: part-score -0.26 (85) · game -1.36 (107) · slam +2.17 (12)

By role: declaring -1.10/bd (-3.42 vs par · 94) · defending -0.18/bd (+1.63 vs par · 110)

By vulnerability: vulnerable -0.89/bd (-1.36 vs par · 102) · not vulnerable -0.33/bd (-0.03 vs par · 102)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1C.EhrlichmanA.Donnellan – M.DonnellanOpen12+10.9+0.91-2.00
Round 2C.EhrlichmanL.De Wijs – S.De WijsClosed12-6.3-0.53-2.50
Round 6C.EhrlichmanV.Dalpozzo – F.DalpozzoClosed12+3.4+0.28-1.17
Round 7C.EhrlichmanV.Szucs – H.LajosOpen12-6.2-0.52-1.00
Round 8C.EhrlichmanC.Zhang – Y.ShaoClosed12-8.1-0.67+1.42
Round 9C.EhrlichmanW.Kedsakun – T.Rimnong AngClosed12-8.5-0.71-1.58
Round 10C.EhrlichmanS.Sjodal – T.HaugeClosed12-41.7-3.48-3.17
Round 11C.EhrlichmanJ.Zalewska – M.NiklausOpen12-15.5-1.29-2.17
Round 12C.EhrlichmanH.Lajos – V.SzucsClosed12+13.5+1.12+4.58
Round 13C.EhrlichmanL.Norman – K.HudsonClosed12-25.5-2.12-2.25
Round 14C.EhrlichmanF.Beekman – M.ChristensenOpen12-27.4-2.28-0.58
Round 15C.EhrlichmanV.Dalpozzo – F.DalpozzoOpen12-3.7-0.31-1.92
Round 16C.EhrlichmanC.Pedersen – L.JacobsenClosed12-3.9-0.33-0.58
Round 17C.EhrlichmanN.Bens – E.BoninClosed12-15.0-1.25-2.00
Round 18C.EhrlichmanA.Donnellan – M.DonnellanOpen12-19.1-1.59-1.92
Round 21C.EhrlichmanJ.Zalewska – M.NiklausClosed12+13.3+1.11+3.75
Round 22C.EhrlichmanR.Ma – C.GeOpen12+15.9+1.32+1.25

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
+14.8Round 22🇨🇳 CHINA46♠♥7-1+20
+13.9Round 12🇭🇺 HUNGARY67♥♥2-1+17
+12.7Round 8🇨🇳 CHINA67♠♠5-1+17
+10.6Round 21🇵🇱 POLAND234♥♠3+2+13
+10.3Round 11🇵🇱 POLAND134♦x♣8-4-14
+9.9Round 7🇭🇺 HUNGARY233NT♦A-3+14
+9.4Round 11🇵🇱 POLAND146♥♦Q-1+14
+9.2Round 21🇵🇱 POLAND152♥♦7=+13
+8.7Round 6🇮🇹 ITALY65♦x♥Q-2+0
+8.3Round 16🇩🇰 DENMARK83NT♥Q+2+1
+7.8Round 17🇫🇷 FRANCE173NT♥8-2+11
+7.1Round 18🇺🇸 USA194♠x♦J-3+12
+7.0Round 22🇨🇳 CHINA72♠♣A=+12
+6.8Round 15🇮🇹 ITALY144♠♦K-1+10
+6.3Round 18🇺🇸 USA1114♠♦4+1-11
+6.1Round 12🇭🇺 HUNGARY56NTx♦2-1+11
+6.0Round 9🇹🇭 THAILAND194♠x♣K-1+9
+5.7Round 6🇮🇹 ITALY43♣♥K+1+0
+4.9Round 7🇭🇺 HUNGARY243♦♠Q=+0
+4.9Round 12🇭🇺 HUNGARY94♥♣9-1+6
+4.8Round 2🇳🇱 NETHERLANDS192♥♦K+1+1
+4.8Round 7🇭🇺 HUNGARY194♠♥A=+11
+4.7Round 21🇵🇱 POLAND182♥x♥5-2+8
+4.6Round 9🇹🇭 THAILAND185♥♠5=+4
+4.5Round 17🇫🇷 FRANCE164♠♣9-1+6
+4.4Round 9🇹🇭 THAILAND246♠♦8+1+1
+4.4Round 12🇭🇺 HUNGARY33NT♠2-1+12
+4.4Round 13🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND135♠♣3+1+3
+4.3Round 10🇳🇴 NORWAY14♥♦4-2-5
+4.2Round 10🇳🇴 NORWAY64♠♥8-1+10
+4.1Round 2🇳🇱 NETHERLANDS183♠♠9+1+1
+4.1Round 15🇮🇹 ITALY163♣♦A+1+0
+3.9Round 1🇺🇸 USA132♥♠2+1+6
+3.9Round 11🇵🇱 POLAND162♦♠3+1+1
+3.8Round 1🇺🇸 USA151NT♠4-1+5
+3.6Round 1🇺🇸 USA123NT♠Q-1+6
+3.5Round 13🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND193♠♥8-3+5
+3.2Round 2🇳🇱 NETHERLANDS154♥♦A-3+4
+3.2Round 22🇨🇳 CHINA121♠♥5-3+1
+3.1Round 2🇳🇱 NETHERLANDS233NT♥7+2-13
+3.1Round 16🇩🇰 DENMARK73NT♠9-1+12
+3.0Round 8🇨🇳 CHINA92♣♦3+1-1
+3.0Round 13🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND244♥♣3=+0
+2.9Round 17🇫🇷 FRANCE222NT♠8-2+7
+2.8Round 6🇮🇹 ITALY54♣♥T+2+8
+2.7Round 1🇺🇸 USA173♣♥K-2+3
+2.7Round 15🇮🇹 ITALY214♥♥5-1+5
+2.7Round 17🇫🇷 FRANCE214♠♠4-1+5
+2.7Round 21🇵🇱 POLAND131NT♣6=+5
+2.6Round 16🇩🇰 DENMARK43♠♦K-3-7
+2.5Round 16🇩🇰 DENMARK33NT♠K-1+12
+2.4Round 9🇹🇭 THAILAND172♠♣5=-1
+2.2Round 21🇵🇱 POLAND143NT♥5-1-2
+2.1Round 21🇵🇱 POLAND174♥♠8-1+10
+2.0Round 6🇮🇹 ITALY83♣♠A-2-1
+1.9Round 10🇳🇴 NORWAY83♦♣T=-1
+1.8Round 16🇩🇰 DENMARK14♥♣5-1+5
+1.7Round 10🇳🇴 NORWAY124♠♥A=+0
+1.7Round 14🇳🇱 NETHERLANDS43♠♦2+1+10
+1.6Round 1🇺🇸 USA1113NT♣T+2-11
+1.6Round 7🇭🇺 HUNGARY154♠♦A=+0
+1.6Round 12🇭🇺 HUNGARY74♠♥T-1+12
+1.6Round 14🇳🇱 NETHERLANDS124♣♠3=+9
+1.6Round 15🇮🇹 ITALY183NT♠9=+0
+1.5Round 1🇺🇸 USA1122♠♦6=+0
+1.5Round 15🇮🇹 ITALY244♥♣A-1+4
+1.4Round 10🇳🇴 NORWAY74♥♠3=+0
+1.4Round 12🇭🇺 HUNGARY121NT♣6-1+4
+1.3Round 12🇭🇺 HUNGARY43NT♥J=-1
+1.2Round 18🇺🇸 USA1122♦♣3=-1
+1.2Round 21🇵🇱 POLAND226♥♦T=+0
+1.0Round 6🇮🇹 ITALY22♦♣K+1+1
+1.0Round 22🇨🇳 CHINA113♣♦K=+5
+0.8Round 1🇺🇸 USA184♠♥J=+0
+0.8Round 15🇮🇹 ITALY226♥♣T+1-6
+0.7Round 9🇹🇭 THAILAND143♦♣A-2-5
+0.6Round 6🇮🇹 ITALY114♥♣J+2-11
+0.5Round 6🇮🇹 ITALY31NT♥7+1+1
+0.5Round 14🇳🇱 NETHERLANDS23NT♠2+3+9
+0.5Round 15🇮🇹 ITALY134♠♥5=+1
+0.4Round 18🇺🇸 USA172♥♦K=+9
+0.2Round 16🇩🇰 DENMARK102♠♦Q-1-1
+0.1Round 1🇺🇸 USA145♦♥4+1-10
+0.1Round 1🇺🇸 USA164♠♦2+2-13
+0.1Round 8🇨🇳 CHINA85♠♦3+1+11
+0.1Round 13🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND162♥♠8-2+0
+0.1Round 18🇺🇸 USA162♠♦T=+0
-0.0Round 14🇳🇱 NETHERLANDS112♥♥3-2-7
+0.0Round 17🇫🇷 FRANCE134♠♣8+2-13
+0.0Round 22🇨🇳 CHINA14♠♦K+1+0
-0.1Round 1🇺🇸 USA114♠♦6=-11
-0.1Round 1🇺🇸 USA1103NT♥5=+1
-0.1Round 2🇳🇱 NETHERLANDS163NT♥7+2+0
-0.1Round 16🇩🇰 DENMARK53NT♥7+1-1
-0.1Round 18🇺🇸 USA1102♦♥2+1-1
-0.1Round 22🇨🇳 CHINA23♣♦A+1+0
-0.2Round 17🇫🇷 FRANCE192♦♥K+1+0
-0.3Round 15🇮🇹 ITALY233♦♠A=+0
-0.4Round 8🇨🇳 CHINA71♠♣A=+2
-0.5Round 7🇭🇺 HUNGARY141NT♦3=-1
-0.5Round 7🇭🇺 HUNGARY214♥♣Q+1+0
-0.5Round 11🇵🇱 POLAND232♠♣K+1+0
-0.5Round 13🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND215♣♠A-2-5
-0.5Round 22🇨🇳 CHINA31♠♣A=+5
-0.5Round 22🇨🇳 CHINA104♠♦J=-1
-0.6Round 9🇹🇭 THAILAND161NT♠A-1+2
-0.6Round 12🇭🇺 HUNGARY12♠♦A-1+6
-0.6Round 15🇮🇹 ITALY172♦♥T-2-8
-0.6Round 16🇩🇰 DENMARK112♥♠5-1+2
-0.7Round 14🇳🇱 NETHERLANDS13NT♣4+2-2
-0.8Round 9🇹🇭 THAILAND153NT♥2+2+0
-0.8Round 11🇵🇱 POLAND201NT♠3-2-2
-0.8Round 16🇩🇰 DENMARK24♥♠A+1+0
-0.8Round 17🇫🇷 FRANCE144♥♣5+2-1
-0.9Round 18🇺🇸 USA183♠♦A=-6
-1.0Round 6🇮🇹 ITALY72♠♥T+1+0
-1.0Round 6🇮🇹 ITALY122♥♣T=+0
-1.0Round 21🇵🇱 POLAND213NT♥5+3+12
-1.1Round 14🇳🇱 NETHERLANDS84♠♣T+1-1
-1.2Round 8🇨🇳 CHINA114♠♦Q=+0
-1.2Round 10🇳🇴 NORWAY43♠♦A=+10
-1.2Round 13🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND224♥♠5-3+9
-1.4Round 6🇮🇹 ITALY13NT♥9+2+0
-1.4Round 8🇨🇳 CHINA122NT♠9-2-5
-1.4Round 18🇺🇸 USA143NT♠2+3-2
-1.4Round 21🇵🇱 POLAND203♠x♦8-1+0
-1.5Round 9🇹🇭 THAILAND213NT♥2-1-12
-1.5Round 22🇨🇳 CHINA95♥♠A=-8
-1.6Round 2🇳🇱 NETHERLANDS133NT♠4+1-1
-1.6Round 8🇨🇳 CHINA53♦♠2-1-4
-1.7Round 2🇳🇱 NETHERLANDS216♣♠8=+1
-1.7Round 13🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND172♦♣8+2-1
-1.9Round 8🇨🇳 CHINA25♦x♣J-3+0
-1.9Round 8🇨🇳 CHINA33♣♣J-1+0
-1.9Round 22🇨🇳 CHINA82♥♦2-1-5
-2.0Round 7🇭🇺 HUNGARY225♣x♦K-3-4
-2.0Round 10🇳🇴 NORWAY52♠♦J-2+1
-2.0Round 12🇭🇺 HUNGARY101NT♥2+1+0
-2.1Round 14🇳🇱 NETHERLANDS54♠♣4-1-10
-2.2Round 9🇹🇭 THAILAND231NT♦2+3-2
-2.3Round 16🇩🇰 DENMARK93NT♠5-3-7
-2.4Round 8🇨🇳 CHINA44♥♦6+2-5
-2.4Round 17🇫🇷 FRANCE185♦♠Q+1-1
-2.5Round 2🇳🇱 NETHERLANDS202♠♦7+3-2
-2.5Round 2🇳🇱 NETHERLANDS243♣♠K-1-2
-2.5Round 7🇭🇺 HUNGARY202♥♦3-1-6
-2.5Round 22🇨🇳 CHINA64♠♣A-1-5
-3.1Round 22🇨🇳 CHINA53♠♣2-3-9
-3.2Round 9🇹🇭 THAILAND204♥♠4=+1
-3.2Round 21🇵🇱 POLAND161♠♣J+3-4
-3.3Round 7🇭🇺 HUNGARY181♥♣Q+3-6
-3.3Round 11🇵🇱 POLAND193♣♥A-1-2
-3.4Round 2🇳🇱 NETHERLANDS174♥♦A+1+0
-3.5Round 14🇳🇱 NETHERLANDS103NT♣3=+1
-3.5Round 17🇫🇷 FRANCE234♠♥J-1-6
-3.5Round 18🇺🇸 USA133NT♦A+1+0
-3.6Round 7🇭🇺 HUNGARY134♥♣Q-2-8
-3.9Round 11🇵🇱 POLAND225♦♣A=+1
-3.9Round 21🇵🇱 POLAND193NT♦J+1+0
-4.1Round 12🇭🇺 HUNGARY113NT♦J+1+0
-4.2Round 11🇵🇱 POLAND153♥♠K=+0
-4.3Round 14🇳🇱 NETHERLANDS63♥♥2+2+6
-4.4Round 2🇳🇱 NETHERLANDS143♣♠6=-9
-4.4Round 14🇳🇱 NETHERLANDS74♠♥3=+5
-4.4Round 18🇺🇸 USA123NT♠7+1+1
-4.5Round 6🇮🇹 ITALY102♠♣J+1+0
-4.6Round 15🇮🇹 ITALY154♠♥A=-1
-5.0Round 11🇵🇱 POLAND243♠♦5+1-2
-5.2Round 13🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND142♠♦9+1+4
-5.3Round 2🇳🇱 NETHERLANDS222♠♦A+3-10
-5.4Round 8🇨🇳 CHINA102♥♥2-3+7
-5.5Round 11🇵🇱 POLAND213♦♣A+1-1
-5.5Round 13🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND153♠♦J+1-12
-5.6Round 9🇹🇭 THAILAND222♦♥K=-6
-5.9Round 15🇮🇹 ITALY204♠♣A+2-13
-6.0Round 12🇭🇺 HUNGARY83♥♣Q+2-6
-6.0Round 13🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND203NT♠J+2-13
-7.0Round 1🇺🇸 USA193NT♦4=+0
-7.2Round 14🇳🇱 NETHERLANDS34♠♦8=-7
-7.2Round 16🇩🇰 DENMARK64♥♣K-1-11
-7.3Round 7🇭🇺 HUNGARY174♥♠4+1+0
-7.4Round 12🇭🇺 HUNGARY22♣♣3-4-6
-7.6Round 17🇫🇷 FRANCE243NT♣6=-6
-7.7Round 7🇭🇺 HUNGARY164♥♣3-1-12
-7.7Round 8🇨🇳 CHINA14♠x♥8-2-5
-7.7Round 11🇵🇱 POLAND185♦♥2-1-10
-7.8Round 13🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND184♠♣Q=-7
-7.9Round 14🇳🇱 NETHERLANDS97♠♦J-2-20
-8.2Round 10🇳🇴 NORWAY115♣♠A-1-5
-8.2Round 11🇵🇱 POLAND173NT♣3-2-11
-8.4Round 18🇺🇸 USA114♠x♦4-1-11
-8.6Round 13🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND234♦x♣K-4-10
-8.8Round 10🇳🇴 NORWAY93NT♥9-1-12
-8.9Round 17🇫🇷 FRANCE203NT♣8+1-10
-9.5Round 17🇫🇷 FRANCE156NT♠K-2-16
-9.6Round 10🇳🇴 NORWAY103NT♦3-1-13
-9.9Round 21🇵🇱 POLAND244♠x♦4=-10
-10.0Round 6🇮🇹 ITALY94♠♣K-1-12
-10.3Round 15🇮🇹 ITALY192♦♠5+3-15
-10.5Round 10🇳🇴 NORWAY34♠♣5-2-8
-11.4Round 16🇩🇰 DENMARK124♠♣7-1-12
-12.7Round 9🇹🇭 THAILAND133NT♠3=-10
-14.9Round 10🇳🇴 NORWAY25♦♣Q+1-15
-15.5Round 18🇺🇸 USA156NT♥4=-13