BERKOWITZ David · TAYLOR
vs par split: bidding -0.95 · play +0.48
Strength of schedule: opponents averaged +0.20/bd (a tough draw) → opponent-adjusted +0.36/bd
Card play — on target: opening leads 60.0% #365 of 398 · declarer play 82.6% #97 of 398 · defence 95.0% #32 of 399
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 40.0% (5) | 80.0% (5) |
| Declarer play | 90.0% (10) | 76.9% (13) |
| Defence | 100.0% (8) | 91.7% (12) |
Opening leads by suit led: ♠ 75.0% (4) · ♥ 66.7% (3) · ♦ 0.0% (1) · ♣ 50.0% (2)
vs par by strain: NT +0.33 (18) · a suit -0.84 (38)
vs par by level: part-score +0.25 (20) · game -0.63 (30) · slam -2.00 (6)
By role: declaring +0.92/bd (-1.94 vs par · 36) · defending -1.22/bd (+2.20 vs par · 20)
By vulnerability: vulnerable +0.28/bd (+0.62 vs par · 29) · not vulnerable +0.03/bd (-1.63 vs par · 27)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | L.Berkowitz | Q.Zhou – L.Bao | Closed | 7 | -0.8 | -0.11 | +0.57 |
| Round 2 | L.Berkowitz | N.Wang – X.Shi | Closed | 7 | +0.0 | +0.00 | +0.43 |
| Round 3 | L.Berkowitz | R.Milner – J.Seamon-Molson | Closed | 7 | +6.8 | +0.97 | +1.71 |
| Round 4 | L.Berkowitz | M.Roche – B.Stewart | Closed | 7 | +0.5 | +0.07 | +1.43 |
| Round 5 | L.Berkowitz | S.Penfold – B.Senior | Closed | 7 | -6.5 | -0.93 | -1.57 |
| Round 6 | L.Berkowitz | D.Hu – R.Li | Closed | 7 | -2.6 | -0.37 | -2.57 |
| Round 7 | L.Berkowitz | F.Xu – H.Jiang | Closed | 7 | +12.2 | +1.74 | -1.29 |
| Round 8 | L.Berkowitz | Y.Li – J.Liu | Closed | 7 | -0.8 | -0.11 | -2.43 |
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 |
|---|---|---|---|---|---|---|---|
| +12.2 | Round 8 | CHIME | 25 | 3♠x | ♥3 | = | +13 |
| +8.1 | Round 4 | RAYNER | 22 | 6♦ | ♦6 | = | -2 |
| +8.0 | Round 7 | GSRC & S UNITED | 21 | 4♠ | ♥A | = | +10 |
| +7.8 | Round 4 | RAYNER | 28 | 4♥ | ♠A | +1 | +7 |
| +7.2 | Round 6 | YUNNAN | 12 | 6♥ | ♦7 | +1 | +2 |
| +5.3 | Round 7 | GSRC & S UNITED | 20 | 4♠ | ♦J | -2 | +7 |
| +4.7 | Round 2 | SHENZHEN NANGANG POWER | 12 | 3NT | ♣6 | = | +3 |
| +4.4 | Round 1 | NORCO | 1 | 3NT | ♠7 | = | -1 |
| +4.0 | Round 3 | MILNER | 15 | 4♥ | ♣A | = | +8 |
| +3.3 | Round 1 | NORCO | 6 | 3NTx | ♠7 | -1 | +6 |
| +2.8 | Round 1 | NORCO | 5 | 1NT | ♠Q | = | -1 |
| +2.8 | Round 2 | SHENZHEN NANGANG POWER | 11 | 1NT | ♣6 | +1 | +0 |
| +2.8 | Round 4 | RAYNER | 24 | 3NT | ♣J | +2 | +0 |
| +2.5 | Round 4 | RAYNER | 27 | 4♥ | ♦8 | -1 | +4 |
| +2.5 | Round 5 | PENFOLD | 4 | 3NT | ♥J | = | -2 |
| +2.3 | Round 2 | SHENZHEN NANGANG POWER | 10 | 3NT | ♣8 | = | +0 |
| +2.2 | Round 6 | YUNNAN | 13 | 1NT | ♠3 | = | +11 |
| +2.0 | Round 3 | MILNER | 18 | 3♣ | ♥K | = | +7 |
| +1.9 | Round 7 | GSRC & S UNITED | 15 | 3♣ | ♥3 | +3 | +2 |
| +1.9 | Round 8 | CHIME | 23 | 3♣ | ♠6 | = | -9 |
| +1.8 | Round 2 | SHENZHEN NANGANG POWER | 8 | 6♠x | ♥6 | -3 | +0 |
| +1.5 | Round 5 | PENFOLD | 6 | 4♠ | ♦A | = | -1 |
| +1.5 | Round 7 | GSRC & S UNITED | 17 | 3NT | ♥6 | +1 | -10 |
| +1.2 | Round 7 | GSRC & S UNITED | 16 | 1NT | ♠Q | -1 | +3 |
| +1.1 | Round 6 | YUNNAN | 10 | 4♥ | ♣4 | +1 | +0 |
| +1.0 | Round 3 | MILNER | 16 | 1NT | ♥7 | +2 | +0 |
| +0.5 | Round 3 | MILNER | 20 | 3NT | ♠Q | = | +2 |
| +0.5 | Round 8 | CHIME | 27 | 3♠ | ♥8 | +1 | +1 |
| +0.4 | Round 1 | NORCO | 4 | 1NT | ♣5 | = | +11 |
| +0.4 | Round 3 | MILNER | 17 | 3♦ | ♣K | -1 | -5 |
| -0.1 | Round 3 | MILNER | 19 | 4♥ | ♣3 | +1 | +0 |
| -0.1 | Round 4 | RAYNER | 25 | 3NT | ♠4 | = | +0 |
| -0.1 | Round 5 | PENFOLD | 2 | 4♥ | ♠J | +1 | +0 |
| -0.3 | Round 1 | NORCO | 2 | 4♥ | ♦K | +1 | +0 |
| -0.3 | Round 2 | SHENZHEN NANGANG POWER | 13 | 3NT | ♠3 | = | +0 |
| -0.3 | Round 6 | YUNNAN | 9 | 4♥ | ♣10 | +1 | +0 |
| -0.4 | Round 5 | PENFOLD | 5 | 1♠ | ♦6 | +2 | +0 |
| -0.7 | Round 8 | CHIME | 26 | 3♣ | ♦J | -1 | -5 |
| -1.0 | Round 3 | MILNER | 21 | 4♠ | ♣5 | +1 | +0 |
| -1.2 | Round 8 | CHIME | 22 | 2♠ | ♥2 | -1 | -4 |
| -1.3 | Round 1 | NORCO | 7 | 4♥ | ♦J | = | +1 |
| -1.5 | Round 7 | GSRC & S UNITED | 19 | 3♠ | ♣K | -1 | -4 |
| -2.8 | Round 5 | PENFOLD | 3 | 2♠ | ♣3 | = | -8 |
| -3.4 | Round 5 | PENFOLD | 7 | 2♠ | ♥3 | = | +0 |
| -3.4 | Round 6 | YUNNAN | 11 | 5♠ | ♦8 | +2 | -10 |
| -3.8 | Round 5 | PENFOLD | 1 | 6♠x | ♥K | -3 | +0 |
| -4.1 | Round 6 | YUNNAN | 14 | 3NT | ♠Q | -2 | -9 |
| -4.2 | Round 7 | GSRC & S UNITED | 18 | 5♦ | ♣10 | +2 | -17 |
| -5.1 | Round 8 | CHIME | 28 | 4♦ | ♥Q | -1 | -6 |
| -5.3 | Round 6 | YUNNAN | 8 | 6♦ | ♣3 | -4 | -12 |
| -5.6 | Round 2 | SHENZHEN NANGANG POWER | 14 | 4♠ | ♥4 | = | +1 |
| -5.7 | Round 2 | SHENZHEN NANGANG POWER | 9 | 2♥ | ♣4 | -3 | -1 |
| -8.3 | Round 4 | RAYNER | 26 | 4♠ | ♣A | = | +1 |
| -8.4 | Round 8 | CHIME | 24 | 3NTx | ♥2 | +2 | -7 |
| -10.1 | Round 1 | NORCO | 3 | 5♦ | ♠3 | -1 | -12 |
| -12.3 | Round 4 | RAYNER | 23 | 6♥ | ♦9 | = | +0 |