BERKOWITZ David · GORDON

193rank
+35.6Butler · 130 bds
+0.27per board
±4.2swing
-0.67vs par /bd · #578/695
+0.40adjusted /bd
Butler per round: 9.5 3.8 -22.4 -4.3 12.3 -4 8 8.4 17.3 1.3 16.1 -0.2 -10.2by round

vs par split: bidding -0.95 · play +0.28

Strength of schedule: opponents averaged +0.13/bd (a tough draw) → opponent-adjusted +0.40/bd

Card play — on target: opening leads 61.5% #682 of 694 · declarer play 71.1% #460 of 694 · defence 89.3% #103 of 695

Card play by contract type — on target
vs NTvs a suit
Opening leads100.0% (3)50.0% (10)
Declarer play76.9% (13)68.8% (32)
Defence86.7% (15)90.2% (41)

Opening leads by suit led: ♠ 50.0% (6) · ♥ 66.7% (3) · ♦ 66.7% (3) · ♣ 100.0% (1)

vs par by strain: NT +0.41 (32) · a suit -1.02 (98)

vs par by level: part-score -0.74 (43) · game -0.01 (80) · slam -7.71 (7)

By role: declaring +0.09/bd (-3.16 vs par · 74) · defending +0.52/bd (+2.62 vs par · 56)

By vulnerability: vulnerable +0.21/bd (-1.25 vs par · 64) · not vulnerable +0.33/bd (-0.11 vs par · 66)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1A.SontagS.Cocheme – T.GauldOpen10+9.5+0.95+1.20
Round 2A.SontagG.Ferraro – D.De FalcoOpen10+3.8+0.38+0.40
Round 4A.SontagM.Ionita – F.FilipOpen10-22.4-2.24-1.90
Round 5A.SontagG.Iribarren – S.BoldtClosed10-4.3-0.43-1.10
Round 6A.SontagM.O'Briain – P.O'BriainClosed10+12.3+1.23+1.70
Round 7A.SontagG.Osborne – F.HindenClosed10-4.0-0.40-3.20
Round 9A.SontagE.Demarcin – Z.EngelOpen10+8.0+0.80+0.20
Round 10A.SontagM.Lebel – P.SouletOpen10+8.4+0.84-0.20
Round 11A.SontagA.Germanis – I.RubenisClosed10+17.3+1.73-1.90
Round 12A.SontagB.Westra – H.BertensClosed10+1.3+0.13-5.10
Round 13A.SontagJ.Gosney – N.EdgttonClosed10+16.1+1.61+2.20
Round 14A.SontagG.Matushko – J.KhokhlovClosed10-0.2-0.02+1.20
Round 15A.SontagP.Walczak – J.ZadrogaClosed10-10.2-1.02-2.20

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
+10.4Round 11LATVIA133NT♦6-1+13
+9.8Round 2ITALIA VINCI143NT♣2+1+11
+9.7Round 7DHONDY106♦♣2=-13
+9.4Round 12T ONSTEIN306♣♦K=+0
+8.4Round 10PAYEN24♠♣2+1+1
+7.8Round 2ITALIA VINCI155♣x♥8-2+10
+6.8Round 13OZ OPEN74♠♠5=+10
+6.3Round 1BOWLES93NT♣7-3+9
+6.2Round 2ITALIA VINCI205♠x♦A-1-7
+6.0Round 9BELGIUM COOREMAN264♥♦A-2+17
+6.0Round 14PARIMATCH204♥♠2-2+13
+5.8Round 5TANGO ARGENTINO195♦♠A-3+11
+5.8Round 9BELGIUM COOREMAN234♥♠J=+0
+5.7Round 13OZ OPEN83NT♠6=+0
+5.5Round 6PIGOT214♠♥6-1+5
+5.5Round 10PAYEN83NT♣6=+0
+5.3Round 12T ONSTEIN234♥♠6=+0
+5.2Round 11LATVIA124♣♥K-1+10
+5.1Round 7DHONDY84♠♥A+2+11
+4.9Round 4ROM COLDEA24♥♣J-1+10
+4.5Round 13OZ OPEN104♠♥Q-1+12
+4.2Round 11LATVIA143NT♣8+1+0
+4.1Round 4ROM COLDEA106♠♣9=+0
+4.0Round 1BOWLES13NT♣A-4+7
+3.9Round 6PIGOT262♠♥5+1+6
+3.9Round 10PAYEN93NT♠Q-2+8
+3.8Round 14PARIMATCH114♥♦2-2+5
+3.4Round 6PIGOT243NT♥4=-1
+3.4Round 9BELGIUM COOREMAN252♦♥K+1+5
+3.4Round 11LATVIA163♦♣A+2-7
+3.1Round 1BOWLES82♥♠2-2+6
+2.6Round 6PIGOT253♦♥9-1+5
+2.5Round 5TANGO ARGENTINO181♠♠J+1+6
+2.5Round 6PIGOT222♠♥K+1-7
+2.3Round 14PARIMATCH165♥x♠K-2+5
+2.1Round 1BOWLES73NT♠8=+0
+2.1Round 15CONSUS OIL274♠♥J+1+0
+2.0Round 13OZ OPEN93NT♦6=+13
+1.9Round 11LATVIA193NT♥9+3-11
+1.8Round 11LATVIA174♥♣10-1+4
+1.7Round 6PIGOT234♥♥2+1+0
+1.6Round 1BOWLES62♠♦Q-1+11
+1.6Round 10PAYEN31NT♠4=+0
+1.5Round 1BOWLES24♥♣J-1-2
+1.5Round 5TANGO ARGENTINO173♣♦Q=+0
+1.5Round 12T ONSTEIN223♣♥A=-1
+1.5Round 12T ONSTEIN263♠♣A=+0
+1.3Round 13OZ OPEN13NT♠5+2+0
+1.2Round 15CONSUS OIL303NT♣8=-2
+1.0Round 15CONSUS OIL244♠♥4+1+0
+1.0Round 15CONSUS OIL294♠♥5+1+0
+0.9Round 10PAYEN103♣♠J=+1
+0.7Round 5TANGO ARGENTINO114♠♠10+1+1
+0.7Round 7DHONDY74♠♥K=+0
+0.7Round 10PAYEN13NT♦2+2+0
+0.7Round 14PARIMATCH176♣♣2=-11
+0.6Round 9BELGIUM COOREMAN284♥♣K+2-12
+0.5Round 7DHONDY52♥♣2+1+0
+0.5Round 12T ONSTEIN274♥♦9=-1
+0.4Round 9BELGIUM COOREMAN224♥♠Q+1+0
+0.4Round 15CONSUS OIL284♠♦5=+1
+0.3Round 14PARIMATCH143NT♦3=+11
+0.1Round 2ITALIA VINCI113♦♣4-1-2
+0.1Round 6PIGOT273♣♠Q+1+7
+0.0Round 4ROM COLDEA83♦♠J-1-2
-0.0Round 5TANGO ARGENTINO124♥♦2+1+0
-0.0Round 9BELGIUM COOREMAN213♠♥J+2-2
+0.0Round 13OZ OPEN23♥♦Q+1-8
-0.1Round 5TANGO ARGENTINO164♥♠5+2-1
-0.1Round 10PAYEN73♥♦A=+0
-0.1Round 14PARIMATCH194♠♠4+1+0
-0.2Round 7DHONDY23NT♥2+2-1
-0.2Round 9BELGIUM COOREMAN293NT♠J=+2
-0.2Round 15CONSUS OIL264♠♣J=+0
-0.3Round 2ITALIA VINCI194♦♠A-2+9
-0.4Round 4ROM COLDEA44♥♦J+1-1
-0.4Round 9BELGIUM COOREMAN242♠♦2-1-4
-0.4Round 11LATVIA153NT♦5+1+0
-0.4Round 13OZ OPEN53NT♣4=+1
-0.5Round 7DHONDY33NT♥3=+0
-0.7Round 13OZ OPEN62♥♣6+1-7
-0.9Round 2ITALIA VINCI172♠x♣2-1+0
-1.0Round 2ITALIA VINCI123♥♥J=+0
-1.0Round 11LATVIA204♠♣3+2-12
-1.1Round 6PIGOT301♥♣7+1+0
-1.1Round 14PARIMATCH134♥♠Q+2+13
-1.1Round 15CONSUS OIL224♠♦6+1-1
-1.2Round 12T ONSTEIN213NT♠4=-13
-1.2Round 14PARIMATCH153♠♦A=-6
-1.3Round 1BOWLES44♥♦7+1-13
-1.4Round 2ITALIA VINCI165♠♥5-2+0
-1.4Round 13OZ OPEN31NT♦4=+0
-1.4Round 15CONSUS OIL252♠♣4+1-10
-1.5Round 4ROM COLDEA35♦♠A-1-3
-1.5Round 7DHONDY12NT♥4+1-7
-1.7Round 13OZ OPEN41NT♠3-1+1
-2.0Round 1BOWLES103♦♣Q=-1
-2.2Round 4ROM COLDEA64♠♥A+1+0
-2.3Round 4ROM COLDEA73♥x♣J-1-3
-2.3Round 7DHONDY42♠♥2-1-5
-2.4Round 5TANGO ARGENTINO134♠♠7+3-12
-2.4Round 5TANGO ARGENTINO143♣♦9-1-4
-2.4Round 6PIGOT282♣♦2=+1
-2.4Round 9BELGIUM COOREMAN273NT♥6+1-4
-2.4Round 15CONSUS OIL214♥♠5+1+0
-2.6Round 1BOWLES33NT♥2=+0
-3.0Round 5TANGO ARGENTINO156♥♠7=+0
-3.0Round 12T ONSTEIN253♦♥Q+1-7
-3.1Round 10PAYEN43♦♠A+1+0
-3.2Round 1BOWLES53♠♦A-3-5
-3.2Round 14PARIMATCH125♣♠5-1-6
-3.3Round 11LATVIA185♣x♦K-2-5
-3.7Round 2ITALIA VINCI183♣♠5+1+0
-3.7Round 12T ONSTEIN296♥♠7=-13
-3.9Round 6PIGOT294♠♥A=+1
-4.0Round 10PAYEN62♠♠4+1-6
-4.4Round 12T ONSTEIN244♠♣7+3-10
-4.6Round 12T ONSTEIN283NT♥A-1-6
-4.9Round 11LATVIA114NT♥4+2-11
-5.2Round 9BELGIUM COOREMAN303NT♠J=+0
-5.4Round 10PAYEN53♠♣K-1-6
-6.4Round 4ROM COLDEA55♥x♠K-2-3
-6.9Round 5TANGO ARGENTINO205♦♠9-1-12
-7.0Round 4ROM COLDEA15♥x♥6-2-5
-7.4Round 7DHONDY95♣♥A-1-10
-7.7Round 14PARIMATCH185♥♠K-1-12
-8.1Round 7DHONDY63NT♥10=-7
-10.8Round 15CONSUS OIL234♠♣5=-10
-11.6Round 4ROM COLDEA94♠x♥K-4-12
-12.8Round 2ITALIA VINCI136♦♦J-1-17