DONG Lidang · CHINA OPN(A)
vs par split: bidding -0.66 · play +0.11
Strength of schedule: opponents averaged +0.31/bd (a tough draw) → opponent-adjusted -0.00/bd
Card play — on target: opening leads 87.5% #115 of 579 · declarer play 60.0% #456 of 579 · defence 88.2% #261 of 579
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 75.0% (4) | 100.0% (4) |
| Declarer play | 0.0% (1) | 66.7% (9) |
| Defence | 90.9% (11) | 83.3% (6) |
Opening leads by suit led: ♠ 75.0% (4) · ♦ 100.0% (3) · ♣ 100.0% (1)
vs par by strain: NT +1.12 (16) · a suit -1.95 (19)
vs par by level: part-score +0.53 (15) · game +0.12 (17) · slam -9.67 (3)
By role: declaring -0.80/bd (-4.33 vs par · 18) · defending +0.19/bd (+3.47 vs par · 17)
By vulnerability: vulnerable -1.13/bd (-3.00 vs par · 19) · not vulnerable +0.65/bd (+2.38 vs par · 16)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | Y.Wu | H.Koo – P.Chan | Closed | 7 | +5.0 | +0.71 | -1.14 |
| Round 3 | Y.Wu | D.Berkowitz – A.Sontag | Open | 7 | -18.8 | -2.69 | +0.29 |
| Round 4 | Y.Wu | I.Chalupec – B.Chmurski | Closed | 7 | +6.6 | +0.94 | -3.29 |
| Round 5 | Y.Wu | G.Duboin – Z.Mahmood | Open | 7 | +5.2 | +0.74 | +0.86 |
| Round 6 | Y.Wu | Y.Chen – J.Zhou | Closed | 7 | -9.1 | -1.30 | +0.57 |
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 |
|---|---|---|---|---|---|---|---|
| +14.7 | Round 4 | BRIDGE24 B | 23 | 6♣ | ♦9 | = | -2 |
| +9.0 | Round 6 | CHINA HYX | 9 | 4♣ | ♦8 | -2 | +15 |
| +7.4 | Round 5 | LAVAZZA | 4 | 3NT | ♥2 | -1 | +12 |
| +5.0 | Round 6 | CHINA HYX | 12 | 3NT | ♦2 | -2 | +11 |
| +4.3 | Round 3 | MARK GORDON | 17 | 1NT | ♠Q | -2 | +6 |
| +4.2 | Round 6 | CHINA HYX | 14 | 5♥ | ♠A | = | +4 |
| +3.9 | Round 4 | BRIDGE24 B | 27 | 5♣ | ♦A | +1 | +1 |
| +3.3 | Round 1 | HKJ9 | 2 | 1NT | ♥5 | = | -1 |
| +2.6 | Round 5 | LAVAZZA | 1 | 3NT | ♥6 | +1 | +1 |
| +2.2 | Round 1 | HKJ9 | 7 | 5♣ | ♥6 | = | -1 |
| +2.1 | Round 6 | CHINA HYX | 11 | 4♣ | ♦2 | = | +0 |
| +2.0 | Round 3 | MARK GORDON | 15 | 2♠ | ♥J | = | +0 |
| +1.9 | Round 5 | LAVAZZA | 3 | 3NT | ♠J | -2 | +6 |
| +1.6 | Round 1 | HKJ9 | 3 | 2♠ | ♣9 | -1 | +1 |
| +0.9 | Round 4 | BRIDGE24 B | 25 | 3NT | ♣4 | +3 | -12 |
| +0.8 | Round 4 | BRIDGE24 B | 28 | 3NT | ♣4 | -1 | +6 |
| +0.6 | Round 5 | LAVAZZA | 2 | 3♥ | ♠10 | = | +0 |
| +0.3 | Round 1 | HKJ9 | 1 | 3♦ | ♠K | -2 | +5 |
| +0.2 | Round 1 | HKJ9 | 5 | 1NT | ♥5 | +2 | +0 |
| -0.0 | Round 4 | BRIDGE24 B | 22 | 2♥ | ♣J | +1 | +0 |
| -0.2 | Round 1 | HKJ9 | 6 | 4♣ | ♠Q | = | -6 |
| -0.4 | Round 5 | LAVAZZA | 5 | 3♥ | ♠2 | = | +0 |
| -1.0 | Round 5 | LAVAZZA | 7 | 4♠ | ♥6 | = | +0 |
| -1.2 | Round 3 | MARK GORDON | 18 | 1NT | ♥3 | -1 | -2 |
| -1.2 | Round 3 | MARK GORDON | 19 | 3NT | ♦6 | = | +17 |
| -1.5 | Round 4 | BRIDGE24 B | 24 | 3NT | ♣5 | +1 | +1 |
| -2.4 | Round 1 | HKJ9 | 4 | 2♠ | ♦6 | = | -6 |
| -3.0 | Round 3 | MARK GORDON | 20 | 3NT | ♠7 | +1 | +12 |
| -4.9 | Round 6 | CHINA HYX | 13 | 2♥ | ♥J | -3 | -4 |
| -5.7 | Round 6 | CHINA HYX | 8 | 3NTx | ♦J | = | -3 |
| -5.9 | Round 5 | LAVAZZA | 6 | 6♣ | ♦6 | +1 | -13 |
| -7.6 | Round 3 | MARK GORDON | 21 | 4♠ | ♥J | +2 | -17 |
| -12.1 | Round 3 | MARK GORDON | 16 | 6♦ | ♣6 | -1 | -14 |
| -12.2 | Round 4 | BRIDGE24 B | 26 | 3NT | ♣Q | -3 | -17 |
| -18.8 | Round 6 | CHINA HYX | 10 | 3NTxx | ♥7 | -4 | -19 |