ZHOU Yuedong · ZUOMEICHENG
vs par split: bidding +0.40 · play +0.66
Strength of schedule: opponents averaged +0.34/bd (a tough draw) → opponent-adjusted +0.72/bd
Card play — on target: opening leads 77.8% #432 of 671 · declarer play 78.6% #305 of 671 · defence 81.8% #471 of 672
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | · | 77.8% (9) |
| Declarer play | · | 78.6% (14) |
| Defence | · | 81.8% (22) |
Opening leads by suit led: ♠ 66.7% (3) · ♦ 100.0% (2) · ♣ 75.0% (4)
vs par by strain: a suit +1.06 (50)
vs par by level: part-score -0.08 (24) · game +1.42 (24) · slam +10.50 (2)
By role: declaring +1.22/bd (+0.57 vs par · 37) · defending -0.56/bd (+1.27 vs par · 33)
By vulnerability: vulnerable +0.75/bd (+0.77 vs par · 39) · not vulnerable -0.08/bd (+1.06 vs par · 31)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | J.Peng | T.Zhou – Y.Shi | Closed | 10 | +24.8 | +2.48 | +1.50 |
| Round 4 | J.Liang | T.Ponomareva – V.Gromova | Closed | 10 | +4.7 | +0.47 | +0.60 |
| Round 6 | J.Liang | M.Rehder – J.Katerbau | Closed | 10 | -9.4 | -0.94 | -0.10 |
| Round 7 | J.Liang | C.Martel – M.Fleisher | Closed | 10 | +1.8 | +0.18 | -0.80 |
| Round 9 | J.Liang | D.Hoffman – W.Haughie | Closed | 10 | -11.0 | -1.10 | -0.50 |
| Round 14 | J.Liang | R.Zaleski – A.Faigenbaum | Closed | 10 | +4.9 | +0.49 | +2.70 |
| Round 15 | Y.Wu | J.Gaviard – J.Van Cleeff | Closed | 10 | +11.0 | +1.10 | +2.90 |
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 |
|---|---|---|---|---|---|---|---|
| +12.4 | Round 1 | KOREA-CHINA | 3 | 6♣ | ♠7 | = | +12 |
| +8.7 | Round 7 | LAVAZZA | 8 | 5♦x | ♣2 | = | +6 |
| +6.7 | Round 1 | KOREA-CHINA | 7 | 4♥ | ♠J | +1 | +0 |
| +6.5 | Round 1 | KOREA-CHINA | 8 | 3N | ♣7 | = | +7 |
| +5.9 | Round 15 | VENTIN | 21 | 4♠ | ♣7 | = | +7 |
| +4.8 | Round 15 | VENTIN | 30 | 4♥ | ♠10 | = | -2 |
| +4.7 | Round 1 | KOREA-CHINA | 4 | 4♠ | ♠2 | -3 | +4 |
| +4.7 | Round 9 | HOFFMAN | 29 | 1N | ♥8 | = | +5 |
| +4.5 | Round 9 | HOFFMAN | 25 | 3N | ♠6 | -2 | +8 |
| +4.3 | Round 9 | HOFFMAN | 21 | 3N | ♣4 | +1 | +5 |
| +4.3 | Round 15 | VENTIN | 27 | 3N | ♣4 | -2 | +6 |
| +4.0 | Round 15 | VENTIN | 24 | 2♥ | ♣A | -2 | +0 |
| +3.8 | Round 14 | ZALESKI | 11 | 3♥ | ♠6 | -2 | +0 |
| +3.4 | Round 4 | RUSSIA | 8 | 3♠ | ♦Q | -1 | +5 |
| +3.4 | Round 15 | VENTIN | 26 | 2♣ | ♣2 | -2 | +2 |
| +3.1 | Round 4 | RUSSIA | 9 | 2♦ | ♥8 | +1 | +6 |
| +3.1 | Round 6 | GERMANY JUNIORS | 30 | 3♦ | ♠A | = | -1 |
| +3.0 | Round 14 | ZALESKI | 15 | 2♠ | ♦A | = | +6 |
| +2.7 | Round 4 | RUSSIA | 4 | 2♦ | ♣Q | +3 | +10 |
| +2.7 | Round 14 | ZALESKI | 14 | 4♠ | ♣10 | +1 | +14 |
| +2.6 | Round 14 | ZALESKI | 12 | 1N | ♠4 | = | +0 |
| +2.0 | Round 6 | GERMANY JUNIORS | 26 | 4♠ | ♥Q | +1 | +5 |
| +1.5 | Round 4 | RUSSIA | 3 | 3N | ♥5 | +1 | -1 |
| +1.4 | Round 1 | KOREA-CHINA | 9 | 3N | ♥10 | +2 | +0 |
| +1.4 | Round 4 | RUSSIA | 7 | 3♣ | ♣4 | +2 | +0 |
| +1.2 | Round 1 | KOREA-CHINA | 10 | 3N | ♠Q | = | -3 |
| +1.0 | Round 7 | LAVAZZA | 2 | 4♠ | ♣A | -1 | -1 |
| +1.0 | Round 15 | VENTIN | 29 | 4♠ | ♣A | = | +0 |
| +0.7 | Round 7 | LAVAZZA | 10 | 2♥ | ♣Q | +1 | +0 |
| +0.6 | Round 9 | HOFFMAN | 28 | 3N | ♥9 | +1 | -5 |
| +0.5 | Round 14 | ZALESKI | 19 | 2N | ♠6 | = | +6 |
| +0.5 | Round 15 | VENTIN | 28 | 2♣ | ♠7 | -2 | +2 |
| +0.2 | Round 6 | GERMANY JUNIORS | 27 | 4♥ | ♦K | -1 | +5 |
| +0.2 | Round 15 | VENTIN | 22 | 4♠ | ♥2 | +1 | +5 |
| +0.1 | Round 7 | LAVAZZA | 1 | 4♥ | ♣5 | = | +1 |
| -0.0 | Round 6 | GERMANY JUNIORS | 28 | 3N | ♥10 | +2 | +0 |
| -0.0 | Round 7 | LAVAZZA | 3 | 1N | ♣K | -2 | -9 |
| -0.1 | Round 1 | KOREA-CHINA | 1 | 3♥ | ♣3 | +1 | +7 |
| -0.1 | Round 4 | RUSSIA | 2 | 3N | ♠9 | +1 | +0 |
| -0.1 | Round 6 | GERMANY JUNIORS | 29 | 2♦ | ♠6 | +2 | +0 |
| -0.1 | Round 7 | LAVAZZA | 6 | 4♥ | ♣J | = | -1 |
| -0.2 | Round 7 | LAVAZZA | 4 | 4♥ | ♣4 | = | -1 |
| -0.5 | Round 14 | ZALESKI | 17 | 1N | ♠4 | +1 | +0 |
| -0.6 | Round 14 | ZALESKI | 13 | 4♠ | ♣K | +2 | +6 |
| -0.8 | Round 1 | KOREA-CHINA | 6 | 2♠ | ♦5 | -1 | +0 |
| -1.0 | Round 4 | RUSSIA | 5 | 2♥ | ♦A | -1 | +1 |
| -1.2 | Round 6 | GERMANY JUNIORS | 23 | 3♥ | ♥3 | +1 | -1 |
| -1.8 | Round 1 | KOREA-CHINA | 5 | 4♠ | ♣5 | -1 | -5 |
| -1.8 | Round 7 | LAVAZZA | 9 | 4♥ | ♠8 | +3 | +10 |
| -1.9 | Round 4 | RUSSIA | 10 | 2♠ | ♦J | -1 | +1 |
| -1.9 | Round 6 | GERMANY JUNIORS | 22 | 3♠ | ♦A | +1 | -7 |
| -1.9 | Round 7 | LAVAZZA | 7 | 4♠ | ♥5 | -1 | -6 |
| -1.9 | Round 9 | HOFFMAN | 24 | 4♥ | ♦2 | +1 | +5 |
| -2.1 | Round 14 | ZALESKI | 18 | 2♥ | ♥4 | +2 | -6 |
| -2.1 | Round 14 | ZALESKI | 20 | 5♣ | ♣4 | = | +1 |
| -2.2 | Round 4 | RUSSIA | 1 | 3♠ | ♥5 | -2 | -5 |
| -2.2 | Round 4 | RUSSIA | 6 | 4♣ | ♠Q | -2 | -11 |
| -2.4 | Round 14 | ZALESKI | 16 | 3N | ♥7 | +1 | +0 |
| -3.1 | Round 6 | GERMANY JUNIORS | 24 | 2N | ♦7 | +1 | -1 |
| -3.3 | Round 6 | GERMANY JUNIORS | 25 | 2♥ | ♣K | +1 | +0 |
| -3.3 | Round 9 | HOFFMAN | 27 | 3♥ | ♦9 | -2 | -6 |
| -3.6 | Round 15 | VENTIN | 23 | 1N | ♥2 | = | +0 |
| -3.7 | Round 9 | HOFFMAN | 26 | 2N | ♦7 | +2 | -1 |
| -4.4 | Round 9 | HOFFMAN | 30 | 4♠x | ♥Q | -1 | -6 |
| -4.7 | Round 7 | LAVAZZA | 5 | 5♠x | ♦Q | -1 | -7 |
| -4.7 | Round 9 | HOFFMAN | 23 | 2♣ | ♠A | -3 | -5 |
| -5.1 | Round 6 | GERMANY JUNIORS | 21 | 4♥ | ♠4 | +2 | -1 |
| -5.4 | Round 1 | KOREA-CHINA | 2 | 3N | ♣5 | = | -7 |
| -7.1 | Round 9 | HOFFMAN | 22 | 4♠ | ♦6 | = | -5 |
| -9.5 | Round 15 | VENTIN | 25 | 6♠ | ♦3 | = | +9 |