🇺🇸 ZHOU Erli · USA 2

68rank
-3.1Butler · 182 bds
-0.02per board
±4.5swing
-1.23vs par /bd · #106/115
-0.14adjusted /bd
Butler per round: -17.2 -27.5 -2.2 -16.7 6.6 -8.9 10.3 17 -5.5 -13.1 40.6 9.3 4.2by round

vs par split: bidding -1.25 · play +0.02

Strength of schedule: opponents averaged -0.12/bd (an easy draw) → opponent-adjusted -0.14/bd

Card play — on target: opening leads 72.9% #103 of 115 · declarer play 83.3% #9 of 115 · defence 80.4% #85 of 115

Card play by contract type — on target
vs NTvs a suit
Opening leads80.0% (15)69.7% (33)
Declarer play73.7% (19)89.7% (29)
Defence60.0% (25)88.1% (67)

Opening leads by suit led: ♠ 61.5% (13) · ♥ 66.7% (12) · ♦ 83.3% (12) · ♣ 81.8% (11)

vs par by strain: NT -1.84 (58) · a suit -0.94 (124)

vs par by level: part-score -1.12 (57) · game -1.28 (116) · slam -1.22 (9)

By role: declaring +0.36/bd (-3.50 vs par · 90) · defending -0.38/bd (+0.99 vs par · 92)

By vulnerability: vulnerable -0.07/bd (-1.97 vs par · 91) · not vulnerable +0.04/bd (-0.49 vs par · 91)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1Z.WangU.Suzer – A.KoclarOpen14-17.2-1.23-2.50
Round 4Z.WangS.Liu – L.ZhangClosed14-27.5-1.96-6.07
Round 6Z.WangM.Bielawski – S.NiajkoOpen14-2.2-0.16-1.93
Round 7Z.WangT.Grude – K.HeggeClosed14-16.7-1.19-2.29
Round 8Z.WangY.Tai – H.HuangOpen14+6.6+0.47-0.14
Round 10Z.WangJ.Ong – S.NgOpen14-8.9-0.64-0.07
Round 11Z.WangJ.Thompson – S.WilliamsClosed14+10.3+0.74+0.79
Round 12Z.WangS.Rueda – F.VallecilloOpen14+17.0+1.21-2.14
Round 14Z.WangC.Westerbeek – E.WackwitzClosed14-5.5-0.39-0.86
Round 15Z.WangV.Fagerlund – A.AimalaClosed14-13.1-0.94-3.43
Round 16Z.WangB.Ellece – G.MaeleOpen14+40.6+2.90+2.07
Round 19Z.WangM.Bilde – P.JepsenClosed14+9.3+0.66+1.79
Round 20Z.WangK.Lazar – B.Szirmay-KalosOpen14+4.2+0.30-1.21

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 20🇩🇪 GERMANY254♠x♠3-3+9
+11.0Round 8🇹🇼 CHINESE TAIPEI206♣♥K-1+17
+10.5Round 16BOTSWANA203♥♠Q+1+15
+10.4Round 1🇹🇷 TURKEY46♣♥2+1-2
+10.3Round 16BOTSWANA173♦x♦A-4+12
+10.0Round 11🇦🇺 AUSTRALIA134♥♣A-2+13
+10.0Round 12🇦🇷 ARGENTINA214♥♣10+3+12
+9.5Round 6🇵🇱 POLAND244♠♦Q+1+0
+9.5Round 11🇦🇺 AUSTRALIA74♥♣K+1+13
+8.2Round 20🇩🇪 GERMANY274♠♦A+1+0
+8.0Round 8🇹🇼 CHINESE TAIPEI173NT♠5=+6
+7.1Round 7🇳🇴 NORWAY33NT♣9+3+1
+7.1Round 11🇦🇺 AUSTRALIA25♠x♥A-1+7
+6.9Round 19🇩🇰 DENMARK25♠♥K-1+12
+6.8Round 16BOTSWANA186♥♠5=-11
+6.5Round 20🇩🇪 GERMANY193♦♣A-4+0
+6.3Round 19🇩🇰 DENMARK64♠♦4=+8
+6.2Round 10🇸🇬 SINGAPORE275♠♦K-1+8
+6.0Round 16BOTSWANA152NT♣J+2+10
+5.7Round 16BOTSWANA223NT♠8-1+14
+5.5Round 20🇩🇪 GERMANY183♥♦7+1+7
+5.2Round 14🇳🇱 NETHERLANDS263NT♣2+1+1
+5.2Round 19🇩🇰 DENMARK84♠♣2-1+10
+5.1Round 12🇦🇷 ARGENTINA232NT♠2+5+6
+4.5Round 10🇸🇬 SINGAPORE183NT♠5-1-2
+4.5Round 19🇩🇰 DENMARK103NT♦Q+2+0
+4.2Round 16BOTSWANA194♣x♠A-2+4
+4.0Round 1🇹🇷 TURKEY63NT♣6=+0
+4.0Round 16BOTSWANA214♣♥A=+0
+3.8Round 8🇹🇼 CHINESE TAIPEI153♠♣K=+1
+3.8Round 8🇹🇼 CHINESE TAIPEI214♠♣A=+7
+3.7Round 6🇵🇱 POLAND163♦x♣A-1-5
+3.5Round 8🇹🇼 CHINESE TAIPEI243NT♥3=+7
+3.5Round 11🇦🇺 AUSTRALIA113NT♥6+2+1
+3.3Round 15🇫🇮 FINLAND77♠♥8=+0
+3.3Round 19🇩🇰 DENMARK74♠♣A-1+13
+3.2Round 7🇳🇴 NORWAY143NT♥5-3+7
+3.0Round 7🇳🇴 NORWAY24♠x♦4-1-6
+3.0Round 15🇫🇮 FINLAND132♥♠3=+1
+2.8Round 6🇵🇱 POLAND194♠♥9=+0
+2.7Round 6🇵🇱 POLAND186♣♥3=-2
+2.6Round 4🇨🇳 CHINA212♠♥Q+3-9
+2.5Round 7🇳🇴 NORWAY114♥♦3+1+0
+2.2Round 12🇦🇷 ARGENTINA152♦♣7+2+0
+2.2Round 14🇳🇱 NETHERLANDS244♥♠K+2-11
+2.1Round 4🇨🇳 CHINA243♠♥A=+1
+2.0Round 12🇦🇷 ARGENTINA282♠♥A+1-7
+2.0Round 16BOTSWANA253♠♦2-2-1
+1.9Round 7🇳🇴 NORWAY64♠♣4-2+6
+1.9Round 8🇹🇼 CHINESE TAIPEI192♠♥8-1+4
+1.7Round 6🇵🇱 POLAND274NT♦7+1+11
+1.7Round 12🇦🇷 ARGENTINA243♠♦A-2+7
+1.7Round 14🇳🇱 NETHERLANDS253NT♣9+1+0
+1.6Round 6🇵🇱 POLAND254♠♠3+1+0
+1.6Round 11🇦🇺 AUSTRALIA12♣♦Q+1+0
+1.6Round 20🇩🇪 GERMANY263NT♠8=+0
+1.5Round 14🇳🇱 NETHERLANDS174♠♦A+2+11
+1.3Round 12🇦🇷 ARGENTINA273NT♥K+2-11
+1.2Round 11🇦🇺 AUSTRALIA121NT♠T-1+3
+1.2Round 16BOTSWANA263NT♥2+1+0
+1.1Round 1🇹🇷 TURKEY72♥♠2+2+10
+1.1Round 4🇨🇳 CHINA171NT♥J=+5
+1.1Round 8🇹🇼 CHINESE TAIPEI262♠♣Q+2-10
+1.1Round 12🇦🇷 ARGENTINA263NT♥7+3-13
+1.1Round 15🇫🇮 FINLAND104♠♦10=+0
+1.1Round 20🇩🇪 GERMANY214♠♦A=+0
+0.9Round 7🇳🇴 NORWAY123NT♠8=-2
+0.8Round 4🇨🇳 CHINA274♥♠8-1-5
+0.8Round 12🇦🇷 ARGENTINA254♥♦6=+1
+0.8Round 15🇫🇮 FINLAND33♦♥6-1-3
+0.8Round 16BOTSWANA243NT♣2=+0
+0.7Round 4🇨🇳 CHINA163NT♠Q+1+1
+0.7Round 10🇸🇬 SINGAPORE164♥♥A=+0
+0.6Round 1🇹🇷 TURKEY94♠♣9=+0
+0.6Round 6🇵🇱 POLAND173NT♠K-1-4
+0.6Round 20🇩🇪 GERMANY154♥♦2+1+0
+0.5Round 4🇨🇳 CHINA154♠♦2+2-13
+0.4Round 7🇳🇴 NORWAY94♠♥A=+0
+0.4Round 12🇦🇷 ARGENTINA162♠♦J+1+0
+0.4Round 15🇫🇮 FINLAND43♦♥A+2-10
+0.4Round 15🇫🇮 FINLAND51NT♣2-1+2
+0.4Round 19🇩🇰 DENMARK122♣♦3-2+2
+0.3Round 1🇹🇷 TURKEY133NT♠Q+2-12
+0.3Round 14🇳🇱 NETHERLANDS283NT♦10+2+0
+0.3Round 15🇫🇮 FINLAND63NT♠6+3-16
+0.3Round 16BOTSWANA283NT♥K+1+0
+0.3Round 19🇩🇰 DENMARK131NT♥3+1+0
+0.1Round 14🇳🇱 NETHERLANDS233NT♠4=+0
+0.0Round 10🇸🇬 SINGAPORE244♠♦5=+0
-0.0Round 11🇦🇺 AUSTRALIA83NT♦4=-1
+0.0Round 11🇦🇺 AUSTRALIA102♥♠J-1+0
-0.0Round 14🇳🇱 NETHERLANDS164♥♣K+1+0
+0.0Round 15🇫🇮 FINLAND124♠♥2+1+0
-0.1Round 1🇹🇷 TURKEY104♠♠6+2-1
-0.1Round 8🇹🇼 CHINESE TAIPEI161NT♥5+2-10
-0.1Round 16BOTSWANA274♥♣K+2-1
-0.2Round 10🇸🇬 SINGAPORE263♥♦10-2+2
-0.2Round 20🇩🇪 GERMANY284♥♣5+1+0
-0.3Round 14🇳🇱 NETHERLANDS273NT♦5+1+0
-0.4Round 7🇳🇴 NORWAY82♠♠5+1-1
-0.4Round 12🇦🇷 ARGENTINA203NT♦2+1-12
-0.4Round 12🇦🇷 ARGENTINA224♥♣3+1-10
-0.4Round 16BOTSWANA166♠♥A=+0
-0.6Round 6🇵🇱 POLAND154♠♦A+1+0
-0.6Round 10🇸🇬 SINGAPORE193NT♦A+1+0
-0.6Round 14🇳🇱 NETHERLANDS194♥♠J=+0
-0.6Round 19🇩🇰 DENMARK114♥♣Q+1+0
-0.6Round 20🇩🇪 GERMANY223NT♠2=-1
-0.7Round 15🇫🇮 FINLAND114♥♣3+1+0
-0.8Round 1🇹🇷 TURKEY144♠♥2-1-4
-0.9Round 6🇵🇱 POLAND224♥♦Q+1+0
-0.9Round 19🇩🇰 DENMARK54♠♥8-2+8
-1.0Round 10🇸🇬 SINGAPORE204♥♣J-1+6
-1.0Round 11🇦🇺 AUSTRALIA33NT♣2+2-1
-1.2Round 7🇳🇴 NORWAY106♥♥6+1-1
-1.2Round 7🇳🇴 NORWAY134♥♣A=+0
-1.2Round 10🇸🇬 SINGAPORE173♦♠K+2-7
-1.3Round 6🇵🇱 POLAND263NT♠5+1+0
-1.3Round 19🇩🇰 DENMARK33♠♥A-1-2
-1.4Round 11🇦🇺 AUSTRALIA63NT♥T-1-6
-1.4Round 12🇦🇷 ARGENTINA194♥♣8=+0
-1.4Round 15🇫🇮 FINLAND82♠♥10=+0
-1.5Round 8🇹🇼 CHINESE TAIPEI182♥♣Q-1+1
-1.5Round 8🇹🇼 CHINESE TAIPEI232♦♦5=+0
-1.6Round 4🇨🇳 CHINA283♥♥8=-13
-1.6Round 14🇳🇱 NETHERLANDS212♣♠K+2-7
-1.7Round 10🇸🇬 SINGAPORE224♥♠K+1-11
-1.9Round 1🇹🇷 TURKEY33♣♦Q-2+0
-2.0Round 7🇳🇴 NORWAY74♥♣Q+1-13
-2.0Round 10🇸🇬 SINGAPORE151♠♠8-2+5
-2.0Round 10🇸🇬 SINGAPORE234♠♥6+2-1
-2.0Round 10🇸🇬 SINGAPORE254♥♦J+1+0
-2.1Round 12🇦🇷 ARGENTINA183NT♣5=+1
-2.3Round 4🇨🇳 CHINA185♥♦A-1-9
-2.3Round 15🇫🇮 FINLAND23NT♥6-1-5
-2.3Round 19🇩🇰 DENMARK94♠♣7+3-2
-2.4Round 4🇨🇳 CHINA223♥♦2=+0
-2.4Round 4🇨🇳 CHINA233♥♠J=-7
-2.4Round 10🇸🇬 SINGAPORE281NT♥10+1+0
-2.5Round 1🇹🇷 TURKEY13NT♣5+2-14
-2.5Round 19🇩🇰 DENMARK41NT♦3=-5
-2.8Round 1🇹🇷 TURKEY53NT♥3=+1
-2.8Round 6🇵🇱 POLAND283NT♥3-1-5
-2.9Round 14🇳🇱 NETHERLANDS222NT♥Q+1-6
-3.0Round 14🇳🇱 NETHERLANDS183♣♠6+1+0
-3.1Round 14🇳🇱 NETHERLANDS153NT♥5+1+0
-3.1Round 15🇫🇮 FINLAND13NT♠10+1-1
-3.3Round 12🇦🇷 ARGENTINA175♣x♥J+1-4
-3.4Round 4🇨🇳 CHINA253NT♥Q-3-7
-3.5Round 1🇹🇷 TURKEY23♥♦K=-1
-4.0Round 8🇹🇼 CHINESE TAIPEI284♠♣Q-2-6
-4.1Round 11🇦🇺 AUSTRALIA53♠♥A+2-6
-4.2Round 1🇹🇷 TURKEY114♥♠3-2-6
-4.3Round 20🇩🇪 GERMANY234♥♠8-1-12
-4.4Round 19🇩🇰 DENMARK13♦♣5-2-8
-4.5Round 11🇦🇺 AUSTRALIA43NT♠Q+2-1
-4.8Round 6🇵🇱 POLAND233♠♥K+1-10
-4.8Round 20🇩🇪 GERMANY243NT♦4+3-1
-4.9Round 6🇵🇱 POLAND215♦♣K=-3
-4.9Round 15🇫🇮 FINLAND142♠♦K+5-5
-5.0Round 4🇨🇳 CHINA194♠♦2-1-5
-5.0Round 14🇳🇱 NETHERLANDS205♣x♦2-2+0
-5.3Round 8🇹🇼 CHINESE TAIPEI274♥♥4=+0
-5.3Round 11🇦🇺 AUSTRALIA95♦♠K=-5
-5.4Round 20🇩🇪 GERMANY164♥♣K-1-5
-5.6Round 19🇩🇰 DENMARK143NT♦10-2-11
-6.2Round 20🇩🇪 GERMANY203NT♦2+3-13
-6.3Round 11🇦🇺 AUSTRALIA143♣♠9-2-6
-6.7Round 8🇹🇼 CHINESE TAIPEI225♠♣J-1-9
-7.2Round 10🇸🇬 SINGAPORE214♥♦J+1-1
-7.4Round 8🇹🇼 CHINESE TAIPEI252♠♥J+3-10
-8.0Round 7🇳🇴 NORWAY53♦♥3=+0
-8.3Round 1🇹🇷 TURKEY85♥x♠A+2-8
-8.7Round 4🇨🇳 CHINA203NT♥K+1-10
-9.1Round 20🇩🇪 GERMANY173NT♥J+2-1
-9.5Round 1🇹🇷 TURKEY127♦♦3=+2
-9.5Round 4🇨🇳 CHINA267♦♥K-3-14
-9.5Round 6🇵🇱 POLAND204♥♣6=-9
-9.8Round 7🇳🇴 NORWAY15♣x♥A=-10
-10.0Round 15🇫🇮 FINLAND95♦♠K-2-11
-10.7Round 16BOTSWANA233NT♥4+1-13
-13.1Round 7🇳🇴 NORWAY43♦x♠J=-13