BERKOWITZ David · ROSENTHAL
vs par split: bidding +0.27 · play +0.67
Strength of schedule: opponents averaged +0.08/bd (a tough draw) → opponent-adjusted +0.35/bd
Card play — on target: opening leads 85.7% #116 of 551 · declarer play 87.5% #50 of 551 · defence 94.3% #11 of 553
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 60.0% (5) | 93.8% (16) |
| Declarer play | 60.0% (5) | 100.0% (11) |
| Defence | 100.0% (10) | 92.0% (25) |
Opening leads by suit led: ♠ 100.0% (3) · ♥ 66.7% (9) · ♦ 100.0% (4) · ♣ 100.0% (5)
vs par by strain: NT +1.84 (19) · a suit +0.61 (51)
vs par by level: part-score +1.42 (26) · game +0.75 (36) · slam +0.25 (8)
By role: declaring +0.55/bd (-0.83 vs par · 35) · defending -0.01/bd (+2.71 vs par · 35)
By vulnerability: vulnerable +0.81/bd (+1.86 vs par · 36) · not vulnerable -0.31/bd (-0.03 vs par · 34)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | J.Jansma | K.Doxiadis – P.Roussos | Closed | 10 | +5.6 | +0.56 | +4.00 |
| Round 2 | J.Jansma | F.Multon – P.Zimmermann | Closed | 10 | +6.0 | +0.60 | +0.20 |
| Round 3 | J.Jansma | J.Danic – A.Colombaro | Closed | 10 | +13.8 | +1.38 | +0.60 |
| Round 4 | J.Jansma | F.Wrang – J.Ventin Camprubi | Open | 10 | -14.2 | -1.42 | +0.30 |
| Round 5 | J.Jansma | S.Werdelin – S.Lauge Pedersen | Closed | 10 | +17.0 | +1.70 | +3.90 |
| Round 9 | J.Jansma | M.Eggeling – M.Ellerbeck | Closed | 10 | -17.7 | -1.77 | -1.80 |
| Round 10 | J.Jansma | P.Pereira – J.De Carvalho | Open | 10 | +8.4 | +0.84 | -0.60 |
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 |
|---|---|---|---|---|---|---|---|
| +13.9 | Round 5 | JASS | 19 | 2♥x | ♠Q | +2 | +14 |
| +9.6 | Round 10 | MADEIRA | 1 | 7♥ | ♥3 | = | +0 |
| +8.9 | Round 3 | ACDC | 22 | 3NT | ♠10 | = | +0 |
| +7.2 | Round 5 | JASS | 11 | 3NT | ♠9 | -2 | +11 |
| +6.7 | Round 3 | ACDC | 27 | 3♠ | ♦9 | -2 | +11 |
| +6.5 | Round 2 | ZIMMERMANN | 13 | 6♠ | ♦2 | = | +0 |
| +6.3 | Round 1 | GREECE | 5 | 4♠ | ♣2 | +2 | +3 |
| +5.5 | Round 3 | ACDC | 29 | 4♥ | ♠2 | +1 | +4 |
| +4.4 | Round 1 | GREECE | 3 | 3NT | ♠10 | +1 | +8 |
| +4.0 | Round 1 | GREECE | 10 | 3NT | ♠2 | -1 | +1 |
| +4.0 | Round 2 | ZIMMERMANN | 15 | 1NT | ♥5 | -1 | +6 |
| +3.8 | Round 2 | ZIMMERMANN | 19 | 3NT | ♣2 | -2 | +6 |
| +3.7 | Round 1 | GREECE | 9 | 3NT | ♥2 | = | +11 |
| +3.5 | Round 9 | MUNICH M3I | 30 | 4♥ | ♦A | = | +0 |
| +3.2 | Round 2 | ZIMMERMANN | 20 | 2♠ | ♦5 | -2 | +3 |
| +2.9 | Round 4 | TEAM VENTIN | 9 | 5♦ | ♠5 | -1 | +10 |
| +2.4 | Round 3 | ACDC | 28 | 4♠ | ♦K | = | +0 |
| +2.3 | Round 1 | GREECE | 2 | 5♥x | ♠A | -2 | +2 |
| +2.1 | Round 5 | JASS | 13 | 4♠ | ♠2 | +1 | +0 |
| +2.1 | Round 5 | JASS | 16 | 3♥ | ♥4 | = | +0 |
| +1.9 | Round 4 | TEAM VENTIN | 5 | 3♠ | ♣4 | = | +0 |
| +1.7 | Round 3 | ACDC | 25 | 2♠ | ♥Q | -1 | -1 |
| +1.6 | Round 10 | MADEIRA | 7 | 3♣ | ♥3 | -1 | +0 |
| +1.4 | Round 5 | JASS | 12 | 4♠ | ♥K | +2 | +1 |
| +1.4 | Round 9 | MUNICH M3I | 24 | 4♠ | ♥K | +2 | -11 |
| +1.4 | Round 10 | MADEIRA | 9 | 3♦ | ♥3 | -1 | -3 |
| +1.3 | Round 4 | TEAM VENTIN | 2 | 2♦ | ♣8 | = | +11 |
| +1.3 | Round 4 | TEAM VENTIN | 4 | 1NT | ♦2 | +1 | +1 |
| +1.2 | Round 1 | GREECE | 4 | 5♥ | ♣K | +1 | +13 |
| +1.2 | Round 10 | MADEIRA | 4 | 3NT | ♥3 | +1 | +1 |
| +0.8 | Round 2 | ZIMMERMANN | 14 | 1NT | ♦2 | = | +1 |
| +0.7 | Round 3 | ACDC | 21 | 2♥ | ♦K | = | -1 |
| +0.3 | Round 3 | ACDC | 26 | 2♠ | ♦K | +1 | +0 |
| +0.1 | Round 2 | ZIMMERMANN | 18 | 1NT | ♦2 | -1 | +0 |
| +0.1 | Round 9 | MUNICH M3I | 27 | 4♥ | ♠J | +1 | +0 |
| +0.1 | Round 10 | MADEIRA | 2 | 4♠ | ♥3 | -2 | +0 |
| -0.0 | Round 1 | GREECE | 7 | 4♥ | ♦A | = | +0 |
| -0.0 | Round 10 | MADEIRA | 8 | 6♥x | ♠3 | -2 | +0 |
| -0.0 | Round 10 | MADEIRA | 10 | 4♠ | ♥3 | -1 | -5 |
| -0.1 | Round 5 | JASS | 20 | 3♠ | ♣K | -2 | +10 |
| -0.1 | Round 10 | MADEIRA | 6 | 4♥ | ♥3 | = | +1 |
| -0.2 | Round 4 | TEAM VENTIN | 10 | 4♠ | ♦8 | = | +0 |
| -0.2 | Round 9 | MUNICH M3I | 25 | 2♠ | ♥A | +1 | +0 |
| -0.3 | Round 9 | MUNICH M3I | 29 | 3NT | ♠5 | = | -1 |
| -0.9 | Round 2 | ZIMMERMANN | 16 | 4♥ | ♦2 | = | +1 |
| -0.9 | Round 3 | ACDC | 23 | 3♦ | ♣7 | = | +1 |
| -1.3 | Round 3 | ACDC | 30 | 3♥ | ♦2 | -1 | +2 |
| -1.4 | Round 5 | JASS | 14 | 4NT | ♣J | +1 | +11 |
| -1.5 | Round 4 | TEAM VENTIN | 6 | 1♠ | ♥Q | -1 | -2 |
| -1.7 | Round 5 | JASS | 18 | 4♥ | ♣5 | +1 | -1 |
| -1.7 | Round 10 | MADEIRA | 5 | 3NT | ♥3 | +2 | +0 |
| -1.8 | Round 4 | TEAM VENTIN | 1 | 2♦ | ♥4 | -1 | -4 |
| -2.0 | Round 1 | GREECE | 1 | 6♠ | ♦A | = | +0 |
| -2.3 | Round 9 | MUNICH M3I | 28 | 3♥ | ♠K | -1 | +1 |
| -2.6 | Round 4 | TEAM VENTIN | 7 | 4♠ | ♥J | = | +1 |
| -3.0 | Round 2 | ZIMMERMANN | 11 | 3NT | ♥5 | -6 | -4 |
| -3.0 | Round 5 | JASS | 17 | 3NT | ♦J | -1 | -5 |
| -3.2 | Round 2 | ZIMMERMANN | 17 | 1♥ | ♦2 | -2 | -5 |
| -3.4 | Round 9 | MUNICH M3I | 21 | 2♠ | ♦K | +1 | +0 |
| -3.5 | Round 5 | JASS | 15 | 1NT | ♥4 | -3 | -2 |
| -3.7 | Round 10 | MADEIRA | 3 | 5♣ | ♥3 | = | +0 |
| -4.2 | Round 9 | MUNICH M3I | 23 | 6♦ | ♥9 | = | +0 |
| -5.1 | Round 9 | MUNICH M3I | 22 | 4♠x | ♠10 | -1 | -3 |
| -5.3 | Round 1 | GREECE | 6 | 6♠ | ♣2 | = | +0 |
| -5.3 | Round 2 | ZIMMERMANN | 12 | 2NT | ♠5 | +2 | -6 |
| -7.2 | Round 9 | MUNICH M3I | 26 | 3NT | ♠K | -3 | -4 |
| -7.4 | Round 4 | TEAM VENTIN | 8 | 5♠ | ♠3 | +2 | -14 |
| -8.1 | Round 4 | TEAM VENTIN | 3 | 6♠ | ♥Q | = | +0 |
| -9.0 | Round 1 | GREECE | 8 | 6♦ | ♠A | = | +2 |
| -10.2 | Round 3 | ACDC | 24 | 5♦ | ♣A | -1 | -10 |