BERKOWITZ David · POLLACK
vs par split: bidding +0.02 · play +0.10
Strength of schedule: opponents averaged +0.62/bd (a tough draw) → opponent-adjusted +0.33/bd
Card play — on target: opening leads 72.7% · declarer play 90.0% · defence 91.7%
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 75.0% (4) | 71.4% (7) |
| Declarer play | · | 90.0% (10) |
| Defence | 75.0% (8) | 100.0% (16) |
Opening leads by suit led: ♠ 75.0% (4) · ♥ 66.7% (3) · ♦ 75.0% (4)
vs par by strain: NT +1.60 (10) · a suit -0.35 (31)
vs par by level: part-score +1.74 (19) · game -2.28 (18) · slam +3.25 (4)
By role: declaring -0.10/bd (-0.94 vs par · 18) · defending -0.44/bd (+1.42 vs par · 24)
By vulnerability: vulnerable -0.45/bd (+0.38 vs par · 21) · not vulnerable -0.14/bd (+0.43 vs par · 21)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round of 64 | L.Berkowitz | H.Eythorsdottir – D.Treitel | Open | 14 | +4.5 | +0.32 | +1.29 |
| Round of 32 | L.Berkowitz | D.Von Arnim – S.De Wijs | Closed | 14 | -18.0 | -1.29 | +0.79 |
| Round of 32 | L.Berkowitz | S.De Wijs – D.Von Arnim | Closed | 14 | +1.2 | +0.09 | -0.86 |
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.
| Butler | Round | Opponents | Bd | Contract | Lead | Res | vs par |
|---|---|---|---|---|---|---|---|
| +10.3 | Round of 32 | FERM | 24 | 4NT | ♠3 | +2 | +11 |
| +9.1 | Round of 32 | FERM | 3 | 6♠x | ♣7 | = | +13 |
| +5.4 | Round of 32 | FERM | 18 | 1NT | ♠6 | +3 | +6 |
| +3.9 | Round of 32 | FERM | 9 | 3♦ | ♣A | -1 | +10 |
| +3.8 | Round of 64 | NITABACH | 13 | Pass | +12 | ||
| +3.5 | Round of 64 | NITABACH | 8 | 5♦ | ♣2 | +1 | -11 |
| +3.3 | Round of 64 | NITABACH | 4 | 2♦ | ♠8 | -1 | +6 |
| +3.2 | Round of 64 | NITABACH | 7 | 2NT | ♥9 | -1 | +5 |
| +3.1 | Round of 32 | FERM | 7 | 3♣ | ♥Q | -2 | +3 |
| +2.9 | Round of 32 | FERM | 19 | 4♠ | ♦K | +1 | +0 |
| +2.8 | Round of 32 | FERM | 17 | 6♦ | ♣K | +1 | +11 |
| +2.8 | Round of 32 | FERM | 27 | 3♥ | ♠J | = | +1 |
| +2.5 | Round of 64 | NITABACH | 10 | 2♠ | ♣Q | = | +0 |
| +1.7 | Round of 32 | FERM | 6 | 3♣ | ♥Q | -1 | +3 |
| +1.6 | Round of 32 | FERM | 13 | 3♣ | ♦4 | -3 | +4 |
| +1.3 | Round of 32 | FERM | 21 | 4♠ | ♦5 | -2 | -5 |
| +0.8 | Round of 64 | NITABACH | 9 | 3NT | ♦5 | -1 | +5 |
| +0.8 | Round of 64 | NITABACH | 12 | 3NT | ♥J | +1 | +11 |
| +0.7 | Round of 32 | FERM | 22 | 3♠ | ♣A | -1 | +2 |
| -0.0 | Round of 64 | NITABACH | 14 | 3♣ | ♦A | -1 | +3 |
| -0.3 | Round of 32 | FERM | 23 | 3NT | ♥6 | +1 | +0 |
| -0.4 | Round of 32 | FERM | 5 | 4♠ | ♠5 | +1 | +0 |
| -0.4 | Round of 32 | FERM | 12 | 4♠ | ♦Q | = | +0 |
| -0.8 | Round of 64 | NITABACH | 3 | 2♥ | ♠A | -2 | +1 |
| -0.8 | Round of 32 | FERM | 20 | 4♥ | ♥5 | = | -1 |
| -0.9 | Round of 32 | FERM | 8 | 2♥ | ♣2 | = | +0 |
| -1.0 | Round of 64 | NITABACH | 1 | 1NT | ♥3 | = | +2 |
| -1.0 | Round of 64 | NITABACH | 6 | 2NT | ♥6 | +1 | -7 |
| -1.2 | Round of 32 | FERM | 2 | 3♥ | ♦5 | = | +0 |
| -1.3 | Round of 32 | FERM | 10 | 3♥ | ♦7 | -1 | +0 |
| -1.8 | Round of 32 | FERM | 15 | 3♥ | ♦A | = | -6 |
| -2.1 | Round of 64 | NITABACH | 5 | 4♥ | ♥J | +1 | +0 |
| -2.3 | Round of 64 | NITABACH | 11 | 4♥ | ♦10 | = | -3 |
| -2.9 | Round of 32 | FERM | 1 | 4♠ | ♣3 | = | +0 |
| -3.7 | Round of 32 | FERM | 26 | 5♣x | ♥J | -2 | -8 |
| -4.0 | Round of 32 | FERM | 25 | 3♥ | ♠7 | = | +0 |
| -5.5 | Round of 32 | FERM | 28 | 4♠ | ♦2 | -2 | -13 |
| -6.2 | Round of 64 | NITABACH | 2 | 3NT | ♠Q | = | -6 |
| -8.5 | Round of 32 | FERM | 11 | 4NT | ♦Q | -4 | -11 |
| -8.9 | Round of 32 | FERM | 16 | 4♠ | ♥2 | = | -10 |
| -10.7 | Round of 32 | FERM | 4 | 7♠ | ♠J | = | +0 |
| -11.1 | Round of 32 | FERM | 14 | 6♥ | ♥2 | -2 | -11 |