ZHANG Yukun · AMANDA

136rank
+3.5Butler · 224 bds
+0.02per board
±4.0swing
-0.54vs par /bd · #50/52
+0.16adjusted /bd
Butler per round: -9.8 -9.8 -9.8 -9.8 -6.6 -6.6 -6.6 -6.6 50.6 50.6 50.6 50.6 -30.7 -30.7 -30.7 -30.7by round

vs par split: bidding -0.64 · play +0.16

Strength of schedule: opponents averaged +0.14/bd (a tough draw) → opponent-adjusted +0.16/bd

Card play — on target: opening leads 85.0% #17 of 52 · declarer play 71.4% #36 of 52 · defence 91.5% #9 of 52

Bidding activity — not a pass: 44.9% #21 of 52 (284/633)

Card play by contract type — on target
vs NTvs a suit
Opening leads100.0% (4)81.2% (16)
Declarer play83.3% (6)68.2% (22)
Defence75.0% (8)94.9% (39)

Opening leads by suit led: ♠ 85.7% (7) · ♥ 100.0% (5) · ♦ 50.0% (2) · ♣ 83.3% (6)

vs par by strain: NT -0.33 (61) · a suit -0.63 (163)

vs par by level: part-score -0.83 (90) · game -0.25 (123) · slam -1.46 (11)

By role: declaring +0.09/bd (-2.59 vs par · 108) · defending -0.05/bd (+1.36 vs par · 116)

By vulnerability: vulnerable -0.16/bd (-1.18 vs par · 112) · not vulnerable +0.19/bd (+0.09 vs par · 112)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round of 64K.FongP.Fredin – A.MalinowskiOpen14-19.5-1.39-0.93
Round of 64K.FongT.Charlsen – T.GrudeClosed14-16.0-1.14-3.14
Round of 64K.FongA.Malinowski – P.FredinClosed14-1.3-0.09-0.86
Round of 64K.FongT.Charlsen – T.GrudeClosed14+27.0+1.93-1.21
Round of 32K.FongD.Israeli – I.GinossarOpen14-0.9-0.06-1.14
Round of 32K.FongD.Israeli – I.GinossarOpen14-11.1-0.79-0.93
Round of 32K.FongD.Israeli – I.GinossarOpen14+0.4+0.03+1.00
Round of 32K.FongD.Israeli – I.GinossarOpen14+5.0+0.36+0.79
Round of 16K.FongA.Versace – A.SementaClosed14+14.1+1.01-0.79
Round of 16K.FongF.Vinci – F.HugonyClosed14+15.7+1.12+1.64
Round of 16K.FongG.Percario – G.DonatiClosed14+15.5+1.11+2.64
Round of 16K.FongA.Versace – A.SementaClosed14+5.3+0.38-1.64
QuarterfinalK.FongS.Kolata – I.KandemirOpen14-15.0-1.07-2.07
QuarterfinalK.FongS.Kolata – I.KandemirOpen14-2.1-0.15-0.64
QuarterfinalK.FongS.Kolata – I.KandemirOpen14-18.8-1.34-0.07
QuarterfinalK.FongS.Kolata – A.GobekliOpen14+5.2+0.37-1.36

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
+11.2Round of 32WAGMI42373NT-3+14
+9.7QuarterfinalJEO HIDRO553NT-2+11
+9.4Round of 64DE BOTTON383NT♠6+1+11
+8.7Round of 16VINCI314♥♣Q-3+5
+8.2Round of 32WAGMI42224♥=+0
+7.7Round of 16VINCI295♦x♠6-2+9
+7.6Round of 16VINCI225♥♠K-1+5
+7.6QuarterfinalJEO HIDRO46♥+1+1
+7.5Round of 64DE BOTTON564♥♣2+1+0
+7.3Round of 32WAGMI42514♥+2+13
+7.3Round of 16VINCI424♠♥4-1+4
+7.3QuarterfinalJEO HIDRO102♠-1+5
+7.0Round of 32WAGMI42163NT-1+12
+7.0Round of 16VINCI124♠♥K+1+0
+6.2Round of 64DE BOTTON553NT♠3+1+0
+6.0Round of 64DE BOTTON453NT♥6=+0
+6.0Round of 16VINCI263♥♦A-3+5
+6.0Round of 16VINCI345♥♣A-2+9
+5.7Round of 16VINCI144♠♦K-1+5
+5.6Round of 16VINCI442♠♦T+2+1
+5.6QuarterfinalJEO HIDRO486♥=-13
+5.5Round of 32WAGMI42123♣=+0
+5.5Round of 32WAGMI42193NT+3+13
+5.3Round of 64DE BOTTON512♠x♥2-1+2
+5.3Round of 16VINCI203NT♦8=-1
+5.1QuarterfinalJEO HIDRO412NT=+6
+5.0Round of 64DE BOTTON521NT♠J+3+6
+4.9Round of 16VINCI172♥♦Q=+6
+4.8Round of 32WAGMI42412♥+3+9
+4.7Round of 16VINCI502♠♥J+1+0
+4.6Round of 16VINCI53NT♠K-1+5
+4.6QuarterfinalJEO HIDRO193♠-1+5
+4.4Round of 16VINCI306♣♥Q-1+14
+4.4QuarterfinalJEO HIDRO14♥=+0
+4.3QuarterfinalJEO HIDRO184♠-1+10
+4.0Round of 16VINCI64♠♣Q+1+0
+3.9Round of 32WAGMI42353NT+3+16
+3.8Round of 16VINCI534♥♠9-2+7
+3.7QuarterfinalJEO HIDRO543NT+2-12
+3.5Round of 64DE BOTTON155♣♦A+1-13
+3.5Round of 64DE BOTTON272♠♦Q-1+5
+3.3Round of 32WAGMI42523♦=+0
+3.3QuarterfinalJEO HIDRO532♠-1+0
+3.2Round of 32WAGMI42464♥x-2+9
+3.2Round of 16VINCI542♠♥2=+6
+3.0QuarterfinalJEO HIDRO311NT=+6
+2.9QuarterfinalJEO HIDRO491NT=-1
+2.8Round of 32WAGMI42284♥+2+11
+2.8Round of 32WAGMI42344♥-1-1
+2.8Round of 16VINCI73NT♥6=-1
+2.7Round of 32WAGMI42214♦-2+5
+2.6Round of 64DE BOTTON334♠♦J=-1
+2.6Round of 64DE BOTTON546♣♦A-2-9
+2.6Round of 32WAGMI4264♠+1-11
+2.6Round of 32WAGMI42404♥=+0
+2.6Round of 32WAGMI42534♥-1+6
+2.5Round of 32WAGMI42433NT=-1
+2.4Round of 64DE BOTTON74♠+1+0
+2.4Round of 32WAGMI42313NT+2+0
+2.3Round of 64DE BOTTON194♣♠Q=+0
+2.2Round of 16VINCI562♠♥6+2+6
+2.1QuarterfinalJEO HIDRO274♣=+1
+2.0Round of 16VINCI351♠♣A+2+0
+2.0Round of 16VINCI473♥♥A-1-1
+2.0QuarterfinalJEO HIDRO363NT+1+0
+2.0QuarterfinalJEO HIDRO383NT+2+1
+1.9Round of 16VINCI462♥♣A-4-9
+1.8Round of 32WAGMI4222NT-1-2
+1.8Round of 16VINCI283NT♠T+1+1
+1.7Round of 32WAGMI42482♠+2+1
+1.6Round of 64DE BOTTON423♦♣J-1-2
+1.5Round of 32WAGMI42102♠+1+1
+1.4Round of 64DE BOTTON433NT♥3+2+0
+1.3Round of 16VINCI33♥♠A=+0
+1.2Round of 32WAGMI42493NT-2+5
+1.2Round of 32WAGMI42552♠+2+6
+1.2Round of 16VINCI391NT♦7-3+1
+1.1Round of 64DE BOTTON261♥♦K=+0
+1.1Round of 64DE BOTTON303NT♠2=+11
+1.1QuarterfinalJEO HIDRO452♥+1+0
+0.9Round of 64DE BOTTON134♥=+0
+0.9Round of 64DE BOTTON361NT♥6-3+0
+0.9Round of 64DE BOTTON416♦♥J+1-13
+0.8Round of 64DE BOTTON15♣-3-4
+0.8Round of 16VINCI134♠♥K=-3
+0.8Round of 16VINCI273NT♦J+1+0
+0.7Round of 32WAGMI4294♥+1+13
+0.7Round of 32WAGMI42244♥=-1
+0.7Round of 16VINCI154♥♣3-2-1
+0.6Round of 64DE BOTTON402♣♠2-1-3
+0.6Round of 16VINCI214♠♣A=+0
+0.6Round of 16VINCI524♠♣6=-1
+0.6QuarterfinalJEO HIDRO233NT+2-13
+0.5Round of 32WAGMI42443♦-1-1
+0.5Round of 16VINCI112♦♠A=-7
+0.4Round of 64DE BOTTON127♥=+0
+0.4QuarterfinalJEO HIDRO23NT+2+0
+0.4QuarterfinalJEO HIDRO293♥=+6
+0.3Round of 64DE BOTTON444♥♠Q=-11
+0.3Round of 64DE BOTTON501NT♥6+1+6
+0.3QuarterfinalJEO HIDRO473NT+1+0
+0.2Round of 64DE BOTTON233♦♠T-1-1
+0.2Round of 32WAGMI4283NT+3+1
+0.1Round of 64DE BOTTON212♣♠K+1-1
+0.1Round of 32WAGMI4274♠=+1
+0.1Round of 32WAGMI42131NT+2-10
+0.1QuarterfinalJEO HIDRO204♠+1+0
+0.0QuarterfinalJEO HIDRO164♥+1+13
+0.0QuarterfinalJEO HIDRO244♠+1+0
-0.1Round of 64DE BOTTON462♥♣7+1+0
-0.1Round of 32WAGMI42113♠-2+0
-0.1Round of 16VINCI183NT♥J-1-5
-0.2Round of 64DE BOTTON34♠-1+5
-0.2Round of 64DE BOTTON104♠-1+6
-0.2Round of 32WAGMI4231♥+2+0
-0.2Round of 32WAGMI42174♥=+0
-0.2Round of 32WAGMI42423NT+1+0
-0.3Round of 64DE BOTTON184♠♥5=+0
-0.3Round of 32WAGMI42503NT+1+1
-0.3Round of 16VINCI96♦♠A-2+5
-0.3QuarterfinalJEO HIDRO564♥+1-1
-0.4Round of 64DE BOTTON52♣+1+9
-0.4QuarterfinalJEO HIDRO33♣+1+0
-0.4QuarterfinalJEO HIDRO513NT+2-1
-0.5Round of 16VINCI163NT♠3+3+13
-0.5Round of 16VINCI384♠♥A=+1
-0.6QuarterfinalJEO HIDRO392♣+1+0
-0.7Round of 64DE BOTTON482♦♥2+1+0
-0.7Round of 64DE BOTTON494♥♣9=+0
-0.7QuarterfinalJEO HIDRO213NT+1-1
-0.7QuarterfinalJEO HIDRO432♠-1+0
-0.8Round of 32WAGMI4254♠+1-1
-0.8Round of 16VINCI412♥♦5+2+1
-0.9Round of 64DE BOTTON243NT♥Q-2-5
-0.9Round of 64DE BOTTON394♠♥A=+1
-0.9Round of 16VINCI14♠♦4+1-4
-0.9Round of 16VINCI513♦♠A-1-1
-1.0Round of 32WAGMI42393♣-1-2
-1.0Round of 16VINCI194♥♠K=-1
-1.0QuarterfinalJEO HIDRO134♠=-1
-1.0QuarterfinalJEO HIDRO142NT-2-5
-1.0QuarterfinalJEO HIDRO352♥-1-5
-1.1QuarterfinalJEO HIDRO113♠-1-2
-1.2Round of 64DE BOTTON25♣x-3+3
-1.2Round of 32WAGMI42473♣=+0
-1.5Round of 32WAGMI42305♣-1-2
-1.6Round of 32WAGMI42293♠=-1
-1.7Round of 32WAGMI42184♥=+0
-1.7Round of 16VINCI22♥♣4=-5
-1.7Round of 16VINCI42♥♦5-1+1
-1.7QuarterfinalJEO HIDRO124♥=+0
-1.7QuarterfinalJEO HIDRO254♠=-1
-1.8Round of 64DE BOTTON202♥♥A+1+0
-1.8Round of 64DE BOTTON372♠♣J-1-4
-1.8Round of 64DE BOTTON474♥♠A=+0
-1.8Round of 16VINCI242♥♠J-1+1
-1.8Round of 16VINCI483NT♥J-1-6
-1.9Round of 64DE BOTTON322♠♣6+1-1
-1.9Round of 16VINCI325♣♥K=+3
-1.9QuarterfinalJEO HIDRO154♠+1+0
-2.0QuarterfinalJEO HIDRO173♥=-1
-2.0QuarterfinalJEO HIDRO503♠-1+2
-2.2Round of 64DE BOTTON291NT♠T-1-4
-2.2Round of 16VINCI494♠♣K+2-1
-2.3Round of 16VINCI83♠♦K=-6
-2.3Round of 16VINCI235♣x♦J-2+0
-2.3QuarterfinalJEO HIDRO223NT-2-11
-2.3QuarterfinalJEO HIDRO282NT=+0
-2.3QuarterfinalJEO HIDRO422♦=-5
-2.4Round of 64DE BOTTON112♠+1-6
-2.4Round of 64DE BOTTON284♠♣7=+0
-2.4Round of 32WAGMI4213NT+1-1
-2.4Round of 32WAGMI42381NT+2-6
-2.4QuarterfinalJEO HIDRO322NT-1+6
-2.5Round of 64DE BOTTON44♥-1-12
-2.5Round of 32WAGMI42254♥=+1
-2.6Round of 32WAGMI42145♦x-1+5
-2.6Round of 32WAGMI42201♠-2-10
-2.7Round of 64DE BOTTON84♥=-7
-2.7Round of 64DE BOTTON342♠♦6-1-7
-2.7Round of 16VINCI332♥♦4-1-5
-2.7Round of 16VINCI455♣♥4-2-6
-2.7QuarterfinalJEO HIDRO525♣+1+9
-2.9QuarterfinalJEO HIDRO63NT-1-5
-2.9QuarterfinalJEO HIDRO94♠+2-1
-2.9QuarterfinalJEO HIDRO261NT=-11
-3.0Round of 16VINCI403♣♥K+1+0
-3.2Round of 64DE BOTTON225♥♣9+1-5
-3.4Round of 64DE BOTTON313NT♠6+3-1
-3.5Round of 64DE BOTTON164♥♦2-1-5
-3.5Round of 16VINCI433NT♠6=-7
-3.6Round of 64DE BOTTON143♣-2+0
-3.7QuarterfinalJEO HIDRO373♣=+1
-3.9QuarterfinalJEO HIDRO333NT=+1
-4.1QuarterfinalJEO HIDRO343NT+2+0
-4.2Round of 32WAGMI42562♥=-5
-4.3Round of 64DE BOTTON532♠♣9+1-11
-4.4Round of 64DE BOTTON174♥♠J-3-7
-4.6QuarterfinalJEO HIDRO87♣=+0
-4.8Round of 64DE BOTTON93♠+1-1
-4.9Round of 16VINCI377♦x♠2-6+0
-4.9QuarterfinalJEO HIDRO302♠=-5
-5.0QuarterfinalJEO HIDRO52NT=-6
-5.0QuarterfinalJEO HIDRO446♥=+0
-5.1Round of 32WAGMI42264♥-3-10
-5.4Round of 32WAGMI42542NT-1-12
-5.5Round of 64DE BOTTON352♥♦6=+1
-5.7Round of 16VINCI106♠♣2+1-1
-6.0Round of 64DE BOTTON63NT-1-6
-6.0Round of 32WAGMI42233NT-1-6
-6.1Round of 32WAGMI42364♥-1-10
-6.3Round of 16VINCI252♥♥T=+0
-6.9Round of 32WAGMI42273NT-3-14
-7.0Round of 32WAGMI42325♦=+2
-7.3Round of 32WAGMI4244♠-1-12
-7.4Round of 32WAGMI42455♥x-1-11
-7.5Round of 32WAGMI42334♥-1-5
-7.6Round of 16VINCI554♠♥4+2-11
-8.0Round of 16VINCI364♥♠Q-1-5
-8.4QuarterfinalJEO HIDRO403NT-3-13
-10.2Round of 64DE BOTTON254♦x♥8-3-12
-10.3QuarterfinalJEO HIDRO465♠-1-13
-13.0Round of 32WAGMI42155♥x=-14
-14.1QuarterfinalJEO HIDRO72♥x=-15