ZHANG Zhenghua · ZUOMEICHENG
vs par split: bidding -0.51 · play +0.49
Strength of schedule: opponents averaged +0.53/bd (a tough draw) → opponent-adjusted -0.09/bd
Card play — on target: opening leads 87.5% #162 of 671 · declarer play 80.0% #286 of 671 · defence 86.4% #287 of 672
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | · | 87.5% (8) |
| Declarer play | · | 80.0% (5) |
| Defence | · | 86.4% (22) |
Opening leads by suit led: ♥ 100.0% (1) · ♦ 100.0% (2) · ♣ 80.0% (5)
vs par by strain: a suit -0.02 (45)
vs par by level: part-score -1.28 (18) · game -0.77 (22) · slam +7.80 (5)
By role: declaring +0.28/bd (-1.82 vs par · 34) · defending -1.47/bd (+1.58 vs par · 36)
By vulnerability: vulnerable -0.53/bd (-0.26 vs par · 42) · not vulnerable -0.75/bd (+0.21 vs par · 28)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 3 | J.Peng | J.Pszczola – M.Kwiecien | Open | 10 | -23.3 | -2.33 | -1.10 |
| Round 5 | J.Peng | X.Wei – Y.Huang | Open | 10 | -1.0 | -0.10 | -1.00 |
| Round 8 | J.Peng | I.Brisebois – J.Smith | Open | 10 | +26.1 | +2.61 | +1.80 |
| Round 10 | J.Peng | A.Budirahardja – R.Effendy | Closed | 10 | -18.6 | -1.86 | -3.20 |
| Round 11 | J.Peng | J.Qian – D.Shen | Closed | 10 | -4.8 | -0.48 | -0.20 |
| Round 12 | Y.Wu | C.Pan – H.Zhang | Open | 10 | -5.3 | -0.53 | +0.60 |
| Round 13 | Y.Wu | J.Shah – P.Sridharan | Closed | 10 | -16.4 | -1.64 | +2.60 |
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 |
|---|---|---|---|---|---|---|---|
| +13.1 | Round 8 | L'ECUYER | 13 | 6♦ | ♥Q | -1 | +14 |
| +10.4 | Round 13 | TEXAN ACES | 5 | 6♦ | ♣6 | -1 | +16 |
| +8.3 | Round 8 | L'ECUYER | 12 | 3N | ♦3 | +1 | +7 |
| +7.0 | Round 12 | LANP PECH | 21 | 4♥ | ♣2 | +1 | +8 |
| +6.1 | Round 5 | SHANGHAI JIANQIAO | 16 | 1Nx | ♠4 | +1 | +6 |
| +4.7 | Round 11 | ZHEJIANG ZHENGYUAN | 16 | 4♠ | ♣9 | +1 | +0 |
| +4.6 | Round 8 | L'ECUYER | 11 | 3N | ♦10 | +1 | +4 |
| +4.5 | Round 5 | SHANGHAI JIANQIAO | 12 | 2N | ♣2 | -3 | +5 |
| +3.8 | Round 8 | L'ECUYER | 19 | 3♥ | ♣3 | = | +1 |
| +3.8 | Round 11 | ZHEJIANG ZHENGYUAN | 13 | 2♥ | ♦2 | -1 | +5 |
| +3.7 | Round 10 | GABSI | 4 | 3♣ | ♠2 | -1 | +1 |
| +3.5 | Round 11 | ZHEJIANG ZHENGYUAN | 14 | 3N | ♠4 | +2 | -14 |
| +3.3 | Round 12 | LANP PECH | 23 | 6♦ | ♠6 | -2 | +8 |
| +3.2 | Round 12 | LANP PECH | 26 | 2♠ | ♣3 | +1 | +0 |
| +2.6 | Round 11 | ZHEJIANG ZHENGYUAN | 11 | 3N | ♥2 | = | -1 |
| +2.5 | Round 8 | L'ECUYER | 17 | 3N | ♦Q | +2 | -5 |
| +2.3 | Round 3 | MARKOWICZ | 23 | 4♠ | ♣10 | +1 | +0 |
| +1.6 | Round 5 | SHANGHAI JIANQIAO | 19 | 2N | ♣J | -2 | +0 |
| +1.5 | Round 8 | L'ECUYER | 18 | 1♠ | ♥3 | +1 | +0 |
| +1.5 | Round 12 | LANP PECH | 29 | 3♠ | ♦K | -1 | +0 |
| +1.3 | Round 3 | MARKOWICZ | 29 | 5♦ | ♣A | +1 | -1 |
| +1.3 | Round 13 | TEXAN ACES | 7 | 4♥ | ♣A | +1 | +0 |
| +1.2 | Round 5 | SHANGHAI JIANQIAO | 11 | 3♥ | ♣9 | -2 | +5 |
| +1.2 | Round 11 | ZHEJIANG ZHENGYUAN | 19 | 4♠ | ♣J | +1 | +1 |
| +1.2 | Round 13 | TEXAN ACES | 1 | 4♠ | ♣3 | = | +0 |
| +0.3 | Round 10 | GABSI | 3 | 2♥ | ♦K | +1 | +0 |
| +0.2 | Round 10 | GABSI | 7 | 1N | ♦5 | = | +9 |
| +0.1 | Round 11 | ZHEJIANG ZHENGYUAN | 20 | 3N | ♠5 | +3 | +13 |
| +0.0 | Round 3 | MARKOWICZ | 25 | 1N | ♥10 | = | +0 |
| +0.0 | Round 13 | TEXAN ACES | 9 | 4♠ | ♣3 | +1 | +0 |
| -0.1 | Round 13 | TEXAN ACES | 10 | 2N | ♥K | = | +0 |
| -0.2 | Round 10 | GABSI | 5 | 3N | ♣J | +3 | -10 |
| -0.3 | Round 12 | LANP PECH | 28 | 5♦x | ♣9 | -2 | +4 |
| -0.5 | Round 10 | GABSI | 6 | 4♠ | ♣A | = | +0 |
| -0.6 | Round 3 | MARKOWICZ | 21 | 1N | ♣10 | +2 | +0 |
| -0.6 | Round 5 | SHANGHAI JIANQIAO | 20 | 4♠ | ♣A | = | +1 |
| -0.7 | Round 3 | MARKOWICZ | 22 | 3N | ♠2 | +1 | +5 |
| -0.8 | Round 10 | GABSI | 9 | 5♠x | ♣10 | -2 | +0 |
| -0.8 | Round 13 | TEXAN ACES | 3 | 3N | ♥7 | +2 | +0 |
| -0.9 | Round 8 | L'ECUYER | 15 | 2♠ | ♦7 | = | +1 |
| -0.9 | Round 10 | GABSI | 1 | 1N | ♣10 | -1 | -4 |
| -1.0 | Round 5 | SHANGHAI JIANQIAO | 14 | 2♠ | ♦5 | = | +0 |
| -1.1 | Round 8 | L'ECUYER | 16 | 2♠ | ♥A | +1 | +0 |
| -1.2 | Round 12 | LANP PECH | 25 | 3N | ♥3 | = | +5 |
| -1.3 | Round 12 | LANP PECH | 30 | 4♥ | ♦A | -1 | -5 |
| -1.9 | Round 5 | SHANGHAI JIANQIAO | 15 | 4♥ | ♠K | +1 | -11 |
| -2.3 | Round 5 | SHANGHAI JIANQIAO | 18 | 4♠ | ♣A | -1 | -5 |
| -2.3 | Round 10 | GABSI | 8 | 2♠ | ♣J | +1 | -6 |
| -2.4 | Round 11 | ZHEJIANG ZHENGYUAN | 17 | 2♥ | ♣A | = | +0 |
| -2.6 | Round 8 | L'ECUYER | 20 | 4♠ | ♣3 | = | +0 |
| -2.9 | Round 5 | SHANGHAI JIANQIAO | 17 | 2♠ | ♦2 | = | -6 |
| -2.9 | Round 11 | ZHEJIANG ZHENGYUAN | 15 | 4♠ | ♥A | -1 | +2 |
| -3.1 | Round 8 | L'ECUYER | 14 | 2♥ | ♠3 | -1 | -4 |
| -3.1 | Round 12 | LANP PECH | 27 | 4♥ | ♦Q | +1 | +5 |
| -3.3 | Round 13 | TEXAN ACES | 2 | 4♥ | ♣5 | = | +1 |
| -3.9 | Round 3 | MARKOWICZ | 30 | 4♠ | ♥A | = | +5 |
| -4.0 | Round 3 | MARKOWICZ | 24 | 2♣x | ♦A | -2 | -4 |
| -4.5 | Round 3 | MARKOWICZ | 26 | 4♣ | ♦A | +2 | -4 |
| -5.7 | Round 5 | SHANGHAI JIANQIAO | 13 | 3N | ♠2 | +1 | -5 |
| -6.2 | Round 10 | GABSI | 2 | 6♦ | ♥2 | -1 | -10 |
| -6.3 | Round 3 | MARKOWICZ | 28 | 3N | ♠4 | +1 | -5 |
| -6.5 | Round 12 | LANP PECH | 24 | 3N | ♥6 | = | -11 |
| -6.5 | Round 13 | TEXAN ACES | 6 | 3N | ♥6 | +2 | +11 |
| -6.9 | Round 3 | MARKOWICZ | 27 | 3N | ♥9 | +1 | -7 |
| -7.4 | Round 11 | ZHEJIANG ZHENGYUAN | 18 | 5♣x | ♠K | -2 | -9 |
| -7.9 | Round 12 | LANP PECH | 22 | 3N | ♥A | +3 | -8 |
| -8.0 | Round 11 | ZHEJIANG ZHENGYUAN | 12 | 3N | ♥3 | = | +1 |
| -9.0 | Round 13 | TEXAN ACES | 8 | 6♠ | ♦J | +1 | +11 |
| -9.6 | Round 13 | TEXAN ACES | 4 | 4♠ | ♦7 | -2 | -13 |
| -11.9 | Round 10 | GABSI | 10 | 2♠xx | ♥2 | = | -12 |