BERKOWITZ David · ROBINSON

44rank
+35.7Butler · 154 bds
+0.23per board
±4.5swing
-0.18vs par /bd · #22/28
-0.07adjusted /bd
Butler per round: 45.1 45.1 45.1 52.3 52.3 -15.8 -15.8 -15.8 -45.9 -45.9 -45.9by round

vs par split: bidding -0.42 · play +0.22

Strength of schedule: opponents averaged -0.30/bd (an easy draw) → opponent-adjusted -0.07/bd

Card play — on target: opening leads 76.9% #18 of 28 · declarer play 76.9% #13 of 28 · defence 92.0% #1 of 28

Card play by contract type — on target
vs NTvs a suit
Opening leads66.7% (9)80.0% (30)
Declarer play57.1% (7)81.2% (32)
Defence85.0% (20)94.5% (55)

Opening leads by suit led: ♠ 81.8% (11) · ♥ 66.7% (6) · ♦ 70.0% (10) · ♣ 83.3% (12)

vs par by strain: NT -0.58 (38) · a suit -0.08 (115)

vs par by level: part-score +0.20 (51) · game -0.64 (92) · slam +1.80 (10)

By role: declaring -0.10/bd (-2.68 vs par · 79) · defending +0.58/bd (+2.45 vs par · 75)

By vulnerability: vulnerable +0.41/bd (-0.07 vs par · 77) · not vulnerable +0.05/bd (-0.30 vs par · 77)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round of 32J.MeckstrothP.Lawrence – O.LawrenceOpen14+29.1+2.08+0.43
Round of 32J.MeckstrothP.Lawrence – O.LawrenceOpen14+12.1+0.86+1.21
Round of 32J.MeckstrothO.Lawrence – P.LawrenceClosed14+3.9+0.28-1.86
Round of 16J.MeckstrothS.Hans – P.GillOpen14+26.5+1.89+1.93
Round of 16J.MeckstrothP.Gill – S.HansClosed14+25.8+1.84+0.50
QuarterfinalJ.MeckstrothJ.Wolfson – S.GarnerClosed14-14.4-1.03-1.36
QuarterfinalJ.MeckstrothA.Birman – D.PadonClosed14-0.8-0.06+2.21
QuarterfinalJ.MeckstrothJ.Verhees – R.Van ProoijenOpen14-0.6-0.04-0.93
SemifinalJ.MeckstrothT.Sprinkhuizen – G.Mendes De LeonClosed14-10.4-0.74-2.29
SemifinalJ.MeckstrothT.Sprinkhuizen – G.Mendes De LeonClosed14-12.4-0.89-1.36
SemifinalJ.MeckstrothA.Palma – F.WrangOpen14-23.1-1.65-0.50

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
+12.0QuarterfinalWOLFSON64♠♥2=+1
+11.3Round of 32PERICULO403♣x♣K-5+10
+10.9Round of 32PERICULO43NT♠8+2+11
+10.4Round of 16HANS206♦♥10+1+13
+10.0QuarterfinalWOLFSON463♠x♣K-5+10
+8.7Round of 16HANS245♥x♠4-1+11
+8.7Round of 16HANS422♠♦J-2+11
+8.6QuarterfinalWOLFSON445♦♣6+2-4
+8.4Round of 32PERICULO296♣♠A-1+10
+8.3SemifinalVENTIN362♥♦7-1+5
+7.7Round of 16HANS316♦♠9-1+10
+7.5Round of 32PERICULO105♥x♠K=+12
+7.1Round of 32PERICULO512♠x♦A-1+10
+7.0Round of 16HANS303NT♦5+1+1
+6.7SemifinalVENTIN433NT♦2-3+10
+6.6Round of 32PERICULO54♥♣K-1+10
+6.4QuarterfinalWOLFSON54♥x♠6-1+7
+6.4QuarterfinalWOLFSON144♠♣3=+0
+5.9Round of 32PERICULO65♣♥A-1+6
+5.4QuarterfinalWOLFSON524♥♣7+1+0
+5.3Round of 32PERICULO414♠♦A-2+7
+5.3Round of 32PERICULO484♥♦5=+0
+5.0Round of 16HANS274♥♣2+1+0
+4.9QuarterfinalWOLFSON354♠♣2-1+13
+4.7QuarterfinalWOLFSON383NT♦10+3+12
+4.7SemifinalVENTIN54♠x♣10-3-4
+4.6QuarterfinalWOLFSON455♣♥Q-2+11
+4.0Round of 16HANS344♠♦Q-2+0
+4.0SemifinalVENTIN304♥♦2=+0
+3.8Round of 32PERICULO432♠♥8-1+11
+3.6Round of 32PERICULO534♠♦5+2-12
+3.3Round of 16HANS182♠♥K-2+6
+2.9Round of 32PERICULO84♠♣8=-1
+2.9Round of 16HANS333♦♣4=+5
+2.9QuarterfinalWOLFSON541♣♠J+1-1
+2.9QuarterfinalWOLFSON553NT♣3+1+0
+2.5Round of 16HANS152♥♣10+1+1
+2.3Round of 32PERICULO122♠♣5-1-2
+2.3SemifinalVENTIN83NT♥6=+7
+2.3SemifinalVENTIN344♠♥8=-11
+2.3SemifinalVENTIN472♠♦Q+1+0
+2.2Round of 32PERICULO133NT♣5+2+1
+2.1QuarterfinalWOLFSON73NT♣K-1+6
+1.9Round of 16HANS252♠♥A=-1
+1.8Round of 16HANS354♥♥A+1+0
+1.7Round of 16HANS234♥♠3=+1
+1.7QuarterfinalWOLFSON375♦x♠A-3+0
+1.6Round of 32PERICULO352♠♦K=+6
+1.5Round of 32PERICULO144♥♠A=-1
+1.4QuarterfinalWOLFSON44♠♦K=+0
+1.3QuarterfinalWOLFSON293NT♠Q-1+5
+1.3SemifinalVENTIN482♠♣2=+1
+1.3SemifinalVENTIN562♠♦2=-1
+1.0Round of 32PERICULO445♣♦K=+1
+1.0SemifinalVENTIN144♠♥A=+3
+1.0SemifinalVENTIN312♠♣3+1+6
+0.9Round of 32PERICULO12♥♥J-2+7
+0.9Round of 16HANS223NT♥7=+0
+0.7SemifinalVENTIN133NT♦3+2+0
+0.7SemifinalVENTIN374♠♥6+1+0
+0.7SemifinalVENTIN444♥♣3=+0
+0.5Round of 32PERICULO545♦♣5+2-13
+0.5Round of 16HANS285♠♠6+1+5
+0.4Round of 32PERICULO345♥♥3-3+4
+0.4QuarterfinalWOLFSON304♠♣Q=+1
+0.3Round of 16HANS404♠♥Q=-1
+0.3QuarterfinalWOLFSON343NT♠2+1+1
+0.3SemifinalVENTIN24♠♦A+2-13
+0.3SemifinalVENTIN73NT♣4+2+0
+0.3SemifinalVENTIN412♠♠4=+0
+0.3SemifinalVENTIN42Pass+3
+0.2Round of 32PERICULO453♣♦2+1-1
+0.2Round of 16HANS292♠♣Q=+7
+0.1Round of 32PERICULO302♠♥Q-1+1
+0.1Round of 32PERICULO361NT♦5+3-6
-0.0Round of 16HANS371NT♥2+1+1
-0.0QuarterfinalWOLFSON334♥♣K=-8
-0.0QuarterfinalWOLFSON394♠♦Q=+0
-0.0QuarterfinalWOLFSON414♠♣K+1+0
+0.0SemifinalVENTIN33NT♣5+3-1
+0.0SemifinalVENTIN44♠♥K-1+12
+0.0SemifinalVENTIN105♣♥A-1-6
+0.0SemifinalVENTIN353NT♠6+1+1
-0.0SemifinalVENTIN503NT♠4=-2
-0.0SemifinalVENTIN523NT♠8=+0
-0.1QuarterfinalWOLFSON323NT♠4+1+0
-0.2Round of 16HANS212♥♣7-3-10
-0.2Round of 16HANS364♠♦7=+0
-0.3Round of 16HANS324♠♥K+1-13
-0.3QuarterfinalWOLFSON314♠♣K+1+0
-0.5Round of 32PERICULO311NT♦5=+2
-0.5Round of 16HANS384NT♥Q=-1
-0.6Round of 16HANS173NT♠Q=+0
-0.6QuarterfinalWOLFSON422NT♠Q-3-6
-0.6QuarterfinalWOLFSON484♠♣A=-1
-0.7SemifinalVENTIN392♠♠7+1-7
-0.7SemifinalVENTIN453♣♦2+1-7
-0.9Round of 32PERICULO374♠♣Q=+0
-0.9QuarterfinalWOLFSON124♠♣10-3-6
-0.9QuarterfinalWOLFSON491NT♠6=-11
-1.0Round of 32PERICULO34♠♥K+2-11
-1.0Round of 32PERICULO112♥♦A-1+1
-1.3Round of 32PERICULO74♠♥A-2-3
-1.3Round of 32PERICULO472♥♠3=+0
-1.3SemifinalVENTIN512♠♦Q+3+9
-1.6QuarterfinalWOLFSON474♠♥K+2+1
-1.7Round of 32PERICULO464♥♠6+3-2
-1.7Round of 32PERICULO522♠♣Q-2+0
-1.7QuarterfinalWOLFSON505♦♠Q-2-6
-1.7QuarterfinalWOLFSON533♠♦8-1+2
-1.8Round of 32PERICULO421NT♣5-1-4
-1.9Round of 32PERICULO333NT♣7+1-1
-1.9Round of 16HANS162♥♦10-2-6
-2.0Round of 32PERICULO501NT♠5-1-3
-2.0SemifinalVENTIN94♣♦K+1-6
-2.3Round of 32PERICULO95♥♠K+1-11
-2.3Round of 16HANS192♠♠4=+0
-2.4QuarterfinalWOLFSON134♥♣Q+1+0
-2.7Round of 32PERICULO394♦♥K=+0
-2.7Round of 16HANS393NT♥A-3-7
-2.7SemifinalVENTIN113NT♠Q+3-10
-3.0SemifinalVENTIN331NT♠8+1-10
-3.0SemifinalVENTIN381♥♦K-2-2
-3.1Round of 16HANS412♠♦J+1-6
-3.3Round of 32PERICULO382♠♦6=-6
-3.3SemifinalVENTIN13NT♥2-2-6
-3.4Round of 32PERICULO496♠♥J-1-11
-3.4Round of 16HANS263NT♠3-2+7
-3.6QuarterfinalWOLFSON13♦♣3+1-1
-3.7Round of 32PERICULO562♠♣K-2+0
-3.7QuarterfinalWOLFSON94♥♠Q=-6
-3.7QuarterfinalWOLFSON106♥♣A=-8
-3.7SemifinalVENTIN534♠♥K=+0
-3.7SemifinalVENTIN553NT♥5+2+0
-3.8Round of 32PERICULO553♠♦5-3-6
-4.0Round of 32PERICULO324♥♦3-1-6
-4.0QuarterfinalWOLFSON434♠♦3+1-1
-4.1QuarterfinalWOLFSON113♥♦J+2-6
-4.1QuarterfinalWOLFSON364♥♣3=+0
-5.0SemifinalVENTIN122♠x♥A-1-3
-5.0SemifinalVENTIN495♥x♣10-4-5
-6.0Round of 32PERICULO24♠♠6+2-13
-6.0SemifinalVENTIN293NT♥K+1-1
-6.7SemifinalVENTIN63NT♥2-1-5
-6.9QuarterfinalWOLFSON84♠♥9-1-10
-7.1QuarterfinalWOLFSON37♣♦6=+2
-7.3SemifinalVENTIN323♠♥K=+10
-8.0SemifinalVENTIN464♥♠K=+1
-9.0QuarterfinalWOLFSON406♦♥7=+13
-9.3SemifinalVENTIN405♣x♦K-2-13
-10.3QuarterfinalWOLFSON26♦♠A=+2
-10.9QuarterfinalWOLFSON563NT♣4-1-13
-13.0SemifinalVENTIN546♣♠A+1-13
-13.6QuarterfinalWOLFSON516NT♠7=+0