DONG Lidang · CHINA OPN(A)
259rank
-7.5Butler · 14 bds
-0.54per board
±4.9swing
+0.00vs par /bd
-0.98adjusted /bd
by round
vs par split: bidding +0.29 · play -0.29
Strength of schedule: opponents averaged -0.45/bd (an easy draw) → opponent-adjusted -0.98/bd
Card play — on target: opening leads 100.0% · declarer play 75.0% · defence 100.0%
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | · | 100.0% (2) |
| Declarer play | 0.0% (1) | 100.0% (3) |
| Defence | 100.0% (1) | 100.0% (5) |
Opening leads by suit led: ♦ 100.0% (1) · ♣ 100.0% (1)
vs par by strain: NT +0.40 (5) · a suit -0.22 (9)
vs par by level: part-score -0.10 (10) · game +0.25 (4)
By role: declaring -1.84/bd (-3.38 vs par · 8) · defending +1.20/bd (+4.50 vs par · 6)
By vulnerability: vulnerable +0.33/bd (-1.86 vs par · 7) · not vulnerable -1.40/bd (+1.86 vs par · 7)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | Y.Wu | L.Milne – A.Griffiths | Closed | 7 | +5.7 | +0.81 | +0.43 |
| Round 4 | Y.Wu | S.Brink – B.Drijver | Open | 7 | -13.2 | -1.89 | -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 |
|---|---|---|---|---|---|---|---|
| +7.9 | Round 1 | LITTLE MECK | 6 | 3NT | ♣8 | = | +0 |
| +6.3 | Round 1 | LITTLE MECK | 4 | 1NT | ♣A | +2 | +13 |
| +4.2 | Round 4 | DIAMOND | 22 | 2♥ | ♦3 | +2 | +10 |
| +1.9 | Round 1 | LITTLE MECK | 7 | 3♣ | ♦Q | -1 | -1 |
| +1.7 | Round 1 | LITTLE MECK | 2 | 2♥ | ♦Q | +2 | +10 |
| +0.5 | Round 4 | DIAMOND | 26 | 1NT | ♠7 | = | -1 |
| +0.1 | Round 1 | LITTLE MECK | 3 | 2♠ | ♣K | -1 | -3 |
| +0.1 | Round 4 | DIAMOND | 25 | 3NT | ♠Q | = | +0 |
| -0.8 | Round 4 | DIAMOND | 27 | 4♠ | ♦4 | +2 | +11 |
| -2.8 | Round 4 | DIAMOND | 24 | 3♣ | ♥Q | -3 | -2 |
| -3.4 | Round 4 | DIAMOND | 28 | 4♦ | ♣9 | = | -9 |
| -4.9 | Round 1 | LITTLE MECK | 5 | 3♣x | ♥10 | -1 | -6 |
| -7.3 | Round 1 | LITTLE MECK | 1 | 3NT | ♦10 | -1 | -10 |
| -11.0 | Round 4 | DIAMOND | 23 | 3♥x | ♦6 | -3 | -12 |