ZHUANG Zejun · CHINA OPN(A)
vs par split: bidding -1.73 · play +0.06
Strength of schedule: opponents averaged +0.59/bd (a tough draw) → opponent-adjusted -0.05/bd
Card play — on target: opening leads 72.7% #197 of 310 · declarer play 78.6% #140 of 310 · defence 87.0% #135 of 311
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 50.0% (2) | 77.8% (9) |
| Declarer play | 50.0% (2) | 83.3% (12) |
| Defence | 100.0% (3) | 85.0% (20) |
Opening leads by suit led: ♠ 50.0% (2) · ♥ 80.0% (5) · ♦ 100.0% (2) · ♣ 50.0% (2)
vs par by strain: NT -4.00 (8) · a suit -1.22 (41)
vs par by level: part-score -0.43 (30) · game -3.00 (15) · slam -6.00 (4)
By role: declaring -0.16/bd (-3.81 vs par · 26) · defending -1.18/bd (+0.74 vs par · 23)
By vulnerability: vulnerable +0.47/bd (-1.84 vs par · 25) · not vulnerable -1.80/bd (-1.50 vs par · 24)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | H.Shi | A.Smirnov – J.Piekarek | Open | 7 | -2.7 | -0.39 | -0.43 |
| Round 2 | H.Shi | W.He – Z.Zhang | Open | 7 | -7.1 | -1.01 | -5.29 |
| Round 3 | H.Shi | G.Duboin – Z.Mahmood | Closed | 7 | -11.8 | -1.69 | -2.29 |
| Round 5 | H.Shi | S.Burgess – G.Lorentz | Open | 7 | +11.2 | +1.60 | +0.43 |
| Round 6 | H.Shi | J.Zhou – Y.Chen | Open | 7 | -15.8 | -2.26 | -2.14 |
| Round 7 | H.Shi | B.Brogeland – E.Lindqvist | Open | 7 | -3.7 | -0.53 | -1.57 |
| Round 8 | H.Shi | S.Bi – Y.Wei | Closed | 7 | -1.4 | -0.20 | -0.43 |
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 |
|---|---|---|---|---|---|---|---|
| +11.0 | Round 7 | GILLIS | 20 | 2♠x | ♥7 | -2 | +12 |
| +7.7 | Round 2 | ZHONGSHAN JIEGAO | 13 | 6♠ | ♦2 | = | -13 |
| +7.4 | Round 5 | LORENTZ | 3 | 3♦ | ♣A | -3 | +10 |
| +5.9 | Round 8 | JILINDINGYUAN | 26 | 3NT | ♥4 | = | -1 |
| +5.7 | Round 6 | CHINA HYX | 13 | 3♠ | ♥J | -2 | +7 |
| +3.6 | Round 1 | LITTLE MECK | 7 | 3♥ | ♦6 | = | +7 |
| +3.1 | Round 5 | LORENTZ | 7 | 6♥ | ♠A | = | +0 |
| +2.9 | Round 7 | GILLIS | 16 | 5♠ | ♣10 | -1 | +5 |
| +2.7 | Round 8 | JILINDINGYUAN | 22 | 2♠ | ♣Q | -1 | +6 |
| +2.5 | Round 3 | LAVAZZA | 18 | 3♥ | ♠J | = | +6 |
| +2.5 | Round 8 | JILINDINGYUAN | 27 | 4♠ | ♦Q | = | +0 |
| +2.3 | Round 5 | LORENTZ | 5 | 4♠ | ♣6 | -1 | +10 |
| +2.2 | Round 2 | ZHONGSHAN JIEGAO | 14 | 2♠ | ♣A | = | +0 |
| +2.0 | Round 2 | ZHONGSHAN JIEGAO | 12 | 3♦ | ♣2 | -2 | +0 |
| +1.5 | Round 6 | CHINA HYX | 10 | 3♦ | ♦3 | +1 | +0 |
| +1.3 | Round 3 | LAVAZZA | 20 | 1NT | ♥Q | +2 | -1 |
| +1.1 | Round 1 | LITTLE MECK | 6 | 1NT | ♥4 | +2 | +10 |
| +1.0 | Round 5 | LORENTZ | 6 | 6NT | ♠10 | = | -11 |
| +0.9 | Round 6 | CHINA HYX | 14 | 3♠ | ♦3 | = | -1 |
| +0.1 | Round 1 | LITTLE MECK | 4 | 3♥ | ♦A | = | -10 |
| -0.1 | Round 5 | LORENTZ | 1 | 4♥ | ♠K | = | -1 |
| -0.2 | Round 8 | JILINDINGYUAN | 25 | 2♥ | ♦8 | = | -1 |
| -0.3 | Round 3 | LAVAZZA | 15 | 4♥ | ♠10 | +2 | +11 |
| -0.4 | Round 5 | LORENTZ | 2 | 2♠ | ♣6 | = | +1 |
| -0.8 | Round 1 | LITTLE MECK | 2 | 2♥ | ♦Q | +3 | -10 |
| -0.9 | Round 7 | GILLIS | 19 | 2♠ | ♥4 | -2 | +1 |
| -1.0 | Round 3 | LAVAZZA | 21 | 1NT | ♥10 | +2 | -10 |
| -1.4 | Round 3 | LAVAZZA | 16 | 1NT | ♠4 | +1 | -7 |
| -1.4 | Round 8 | JILINDINGYUAN | 23 | 2♣ | ♠K | = | +1 |
| -1.7 | Round 1 | LITTLE MECK | 3 | 3♠ | ♣K | -2 | +1 |
| -1.8 | Round 6 | CHINA HYX | 11 | 3♣ | ♣5 | = | +0 |
| -2.1 | Round 5 | LORENTZ | 4 | 4♠ | ♦K | -1 | -6 |
| -2.2 | Round 6 | CHINA HYX | 8 | 3♦ | ♥6 | +1 | -1 |
| -2.3 | Round 8 | JILINDINGYUAN | 24 | 3♣ | ♥2 | +1 | +0 |
| -2.4 | Round 1 | LITTLE MECK | 1 | 3NT | ♦7 | = | +1 |
| -2.5 | Round 7 | GILLIS | 18 | 3NT | ♥5 | +3 | -13 |
| -2.6 | Round 1 | LITTLE MECK | 5 | 2♠ | ♠6 | -2 | -2 |
| -2.6 | Round 2 | ZHONGSHAN JIEGAO | 10 | 3♠x | ♣A | -1 | -7 |
| -2.6 | Round 7 | GILLIS | 21 | 6♠ | ♥2 | = | +0 |
| -2.7 | Round 7 | GILLIS | 15 | 4♠ | ♠5 | -1 | -12 |
| -3.9 | Round 3 | LAVAZZA | 17 | 4♠ | ♣9 | -1 | -8 |
| -4.1 | Round 2 | ZHONGSHAN JIEGAO | 9 | 3♥x | ♦6 | -2 | -4 |
| -5.6 | Round 2 | ZHONGSHAN JIEGAO | 11 | 3♥ | ♠K | = | -6 |
| -6.7 | Round 2 | ZHONGSHAN JIEGAO | 8 | 2♦x | ♦6 | = | -7 |
| -7.3 | Round 6 | CHINA HYX | 12 | 4♠x | ♥5 | -2 | -8 |
| -8.6 | Round 8 | JILINDINGYUAN | 28 | 3♠ | ♣7 | +1 | -8 |
| -8.9 | Round 7 | GILLIS | 17 | 5♣x | ♥3 | = | -4 |
| -9.0 | Round 3 | LAVAZZA | 19 | 5♠x | ♣K | -1 | -7 |
| -12.6 | Round 6 | CHINA HYX | 9 | 4♥x | ♦K | = | -12 |