🇺🇸 BERKOWITZ David · USA 2

14rank
+16.5Butler · 112 bds
+0.15per board
±5.3swing
-0.14vs par /bd · #10/17
-0.17adjusted /bd
Butler per round: 29.3 29.3 29.3 0.2 0.2 0.2 -13by round

vs par split: bidding -1.38 · play +0.59

Strength of schedule: opponents averaged -0.31/bd (an easy draw) → opponent-adjusted -0.17/bd

Card play — on target: opening leads 95.8% #2 of 17 · declarer play 95.0% #1 of 17 · defence 94.7% #1 of 17

Card play by contract type — on target
vs NTvs a suit
Opening leads·95.8% (24)
Declarer play·95.0% (20)
Defence·94.7% (38)

Opening leads by suit led: ♠ 100.0% (9) · ♥ 100.0% (3) · ♦ 66.7% (3) · ♣ 100.0% (9)

vs par by strain: a suit -0.69 (82)

vs par by level: part-score -0.41 (41) · game -1.97 (31) · slam +2.10 (10)

By role: declaring +0.13/bd (-1.86 vs par · 52) · defending +0.12/bd (+1.30 vs par · 59)

By vulnerability: vulnerable +0.23/bd (-0.55 vs par · 56) · not vulnerable +0.07/bd (+0.27 vs par · 56)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
QuarterfinalM.LairP.Swanson – J.SolodarOpen16+12.3+0.77+1.62
QuarterfinalM.LairP.Swanson – J.SolodarOpen16+2.7+0.17-1.06
QuarterfinalM.LairJ.Solodar – P.SwansonOpen16+14.3+0.89+0.75
SemifinalM.LairV.Markowicz – J.KlukowskiClosed16+0.6+0.04-2.50
SemifinalM.LairA.Kowalski – J.RomanskiOpen16+13.3+0.83+1.12
SemifinalM.LairJ.Klukowski – V.MarkowiczOpen16-13.7-0.86+0.38
Play-offM.LairM.Sawiruddin – D.SaculOpen16-13.0-0.81-1.31

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
+14.3Semifinal🇵🇱 POLAND716♠♠9-1+17
+12.9Quarterfinal🇺🇸 USA 1456♣♦7=+0
+12.1Quarterfinal🇺🇸 USA 1736♠♦7=+0
+11.0Semifinal🇵🇱 POLAND293N♦Q+1-10
+10.3Semifinal🇵🇱 POLAND666♣♠K-3+14
+10.0Semifinal🇵🇱 POLAND753N♥4-1+10
+10.0Play-off🇮🇩 INDONESIA324♦♣K=+11
+9.0Play-off🇮🇩 INDONESIA256♦♣K=+3
+8.4Quarterfinal🇺🇸 USA 1675♠x♦Q-2+10
+8.1Quarterfinal🇺🇸 USA 1294♠♦J-4+11
+7.7Quarterfinal🇺🇸 USA 1253N♥T-1+12
+7.3Semifinal🇵🇱 POLAND215♦♠6=-2
+7.0Play-off🇮🇩 INDONESIA245♣♦3=-9
+5.7Semifinal🇵🇱 POLAND253♥♠Q-1+3
+5.7Semifinal🇵🇱 POLAND443♠♥2-2+2
+5.3Quarterfinal🇺🇸 USA 1353N♥9-1+5
+5.0Semifinal🇵🇱 POLAND262♠♣4=+0
+5.0Semifinal🇵🇱 POLAND354♥♣x-2+11
+4.7Quarterfinal🇺🇸 USA 1805♥x♣K-4-12
+4.7Semifinal🇵🇱 POLAND414♥♣A+1+0
+4.7Semifinal🇵🇱 POLAND452N♠4=+0
+4.4Quarterfinal🇺🇸 USA 1284♠♦T=+11
+4.3Semifinal🇵🇱 POLAND422♠♥Q-1+11
+4.1Quarterfinal🇺🇸 USA 1741N♠3=+5
+3.6Quarterfinal🇺🇸 USA 1236♥♦A=+0
+3.6Quarterfinal🇺🇸 USA 1405♣x♦K-1+6
+3.6Quarterfinal🇺🇸 USA 1723N♥9-1+10
+3.4Quarterfinal🇺🇸 USA 1783♣♠5=-1
+3.3Quarterfinal🇺🇸 USA 1432♥♠K=+6
+3.3Semifinal🇵🇱 POLAND342♥♣x-1-1
+3.3Semifinal🇵🇱 POLAND384♣♠2-1+10
+2.9Quarterfinal🇺🇸 USA 1171N♠3+1+1
+2.7Semifinal🇵🇱 POLAND232♦♥7+2+1
+2.3Quarterfinal🇺🇸 USA 148Pass+4
+2.3Quarterfinal🇺🇸 USA 1753♦♣2=+0
+2.3Semifinal🇵🇱 POLAND173♣♥K+1+1
+2.0Semifinal🇵🇱 POLAND192♦♦9+2+0
+2.0Semifinal🇵🇱 POLAND362N♣x=-1
+1.9Quarterfinal🇺🇸 USA 1423♠♣K=+0
+1.7Quarterfinal🇺🇸 USA 1393♦♣A-1+5
+1.3Quarterfinal🇺🇸 USA 1214♠♠T+1+0
+1.0Quarterfinal🇺🇸 USA 1475♥x♠5=-5
+1.0Quarterfinal🇺🇸 USA 1703N♥5+2+0
+1.0Semifinal🇵🇱 POLAND433N♣2+3+1
+1.0Semifinal🇵🇱 POLAND723♥♠3-1+5
+0.9Quarterfinal🇺🇸 USA 1241N♥2-1-3
+0.7Semifinal🇵🇱 POLAND473N♥3=+1
+0.7Semifinal🇵🇱 POLAND793♠♦6+1+10
+0.4Quarterfinal🇺🇸 USA 1412♦♦2+2+0
+0.3Quarterfinal🇺🇸 USA 1466♠♥K=+0
+0.3Semifinal🇵🇱 POLAND403N♦4=+1
+0.1Quarterfinal🇺🇸 USA 1204♠♥2=+0
+0.1Quarterfinal🇺🇸 USA 1793N♥T+2+12
+0.0Quarterfinal🇺🇸 USA 1323N♦Q+2+0
+0.0Semifinal🇵🇱 POLAND274♠♥K=-3
-0.0Semifinal🇵🇱 POLAND483N♠J=+0
-0.0Semifinal🇵🇱 POLAND674♦♣2-1-6
-0.0Semifinal🇵🇱 POLAND683N♥5+1+0
-0.0Semifinal🇵🇱 POLAND691♦♣K+1-2
+0.0Play-off🇮🇩 INDONESIA173N♣4+3+11
+0.0Play-off🇮🇩 INDONESIA194♥♣4+1+0
+0.0Play-off🇮🇩 INDONESIA233N♦5+2+0
+0.0Play-off🇮🇩 INDONESIA262♣♥8+1-6
+0.0Play-off🇮🇩 INDONESIA295♦♥6-1-6
+0.0Play-off🇮🇩 INDONESIA303N♠J+2-8
+0.0Play-off🇮🇩 INDONESIA312♠♣9-2+5
-0.7Semifinal🇵🇱 POLAND183N♥2+1-1
-0.7Semifinal🇵🇱 POLAND783N♠7-1-2
-1.0Quarterfinal🇺🇸 USA 1224♣♣5-1-1
-1.0Quarterfinal🇺🇸 USA 1763N♠4+1-1
-1.0Semifinal🇵🇱 POLAND242♠♠4-1-8
-1.0Play-off🇮🇩 INDONESIA203N♥Q=-1
-1.1Quarterfinal🇺🇸 USA 1314♥♦5=+0
-1.3Quarterfinal🇺🇸 USA 1273♠♠T=+0
-1.3Quarterfinal🇺🇸 USA 1302♠♣K+1+0
-1.7Quarterfinal🇺🇸 USA 1665♣♥8+1-11
-2.0Quarterfinal🇺🇸 USA 1442♣♦8-3+3
-2.3Quarterfinal🇺🇸 USA 1184♠♦A-2-5
-2.7Quarterfinal🇺🇸 USA 1774♦♥A-2-10
-3.0Quarterfinal🇺🇸 USA 1363♠♣K+1+1
-3.0Quarterfinal🇺🇸 USA 1694♥♠7-3+8
-3.0Semifinal🇵🇱 POLAND223♥♣2=+0
-3.0Play-off🇮🇩 INDONESIA215♣x♠J-3+0
-3.3Semifinal🇵🇱 POLAND283♥♣5-1-6
-3.7Quarterfinal🇺🇸 USA 1344♠♦3+2-13
-3.7Semifinal🇵🇱 POLAND301N♥5=-6
-3.7Semifinal🇵🇱 POLAND462♦♠8+2+0
-3.7Semifinal🇵🇱 POLAND774♥♦Q-3+8
-4.0Quarterfinal🇺🇸 USA 1684♥♠6=+0
-4.0Semifinal🇵🇱 POLAND394♠♥7-1-12
-4.4Quarterfinal🇺🇸 USA 1197♥x♦K-5+0
-4.7Semifinal🇵🇱 POLAND732♠♥K-1-12
-5.0Quarterfinal🇺🇸 USA 1654♠♦T+1+0
-5.0Semifinal🇵🇱 POLAND803♥♥7-1-6
-5.0Play-off🇮🇩 INDONESIA284♠♥K-1-5
-5.3Quarterfinal🇺🇸 USA 1262♥♥3=+0
-5.6Quarterfinal🇺🇸 USA 1334♠x♦2-2-15
-5.7Semifinal🇵🇱 POLAND322♣♣J-2-5
-6.0Semifinal🇵🇱 POLAND313N♥5=+0
-6.3Semifinal🇵🇱 POLAND334♠♣x=+0
-7.0Semifinal🇵🇱 POLAND744♠♠5=-10
-7.0Play-off🇮🇩 INDONESIA223♥♦K=+0
-7.1Quarterfinal🇺🇸 USA 1373N♦4=+1
-7.3Semifinal🇵🇱 POLAND762♦♣A-2-6
-7.7Semifinal🇵🇱 POLAND372♠x♣x-2-5
-8.0Quarterfinal🇺🇸 USA 1716♣♠T=+2
-8.6Quarterfinal🇺🇸 USA 1386♠♦2-3-15
-10.3Semifinal🇵🇱 POLAND655♣♦4=-14
-11.0Play-off🇮🇩 INDONESIA183♥♣K-1-10
-11.3Semifinal🇵🇱 POLAND703N♠6+1+0
-12.0Semifinal🇵🇱 POLAND204♠x♥A=-4
-12.0Play-off🇮🇩 INDONESIA273♦♠8+2-6