ZHANG Yalan · YBS
vs par split: bidding -1.25 · play +0.46
Strength of schedule: opponents averaged +0.46/bd (a tough draw) → opponent-adjusted +0.18/bd
Card play — on target: opening leads 55.6% · declarer play 100.0% · defence 83.3%
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 25.0% (4) | 80.0% (5) |
| Declarer play | 100.0% (1) | · |
| Defence | 62.5% (8) | 100.0% (10) |
Opening leads by suit led: ♠ 33.3% (3) · ♥ 75.0% (4) · ♦ 50.0% (2)
vs par by strain: NT -0.55 (11) · a suit -0.94 (17)
vs par by level: part-score -0.94 (16) · game -1.64 (11) · slam +11.00 (1)
By role: declaring -0.89/bd (-4.20 vs par · 10) · defending +0.06/bd (+1.11 vs par · 18)
By vulnerability: vulnerable -0.64/bd (-1.86 vs par · 14) · not vulnerable +0.09/bd (+0.29 vs par · 14)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Quarterfinal | C.Yeh | F.Stewart – R.Lebi | Open | 14 | -11.6 | -0.83 | -1.93 |
| Quarterfinal | C.Yeh | F.Stewart – R.Lebi | Open | 14 | +3.8 | +0.27 | +0.36 |
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 |
|---|---|---|---|---|---|---|---|
| +8.1 | Quarterfinal | SILVERMAN | 44 | 4♠ | ♦3 | -1 | +9 |
| +5.0 | Quarterfinal | SILVERMAN | 45 | 3♥ | ♦K | +1 | +6 |
| +4.1 | Quarterfinal | SILVERMAN | 46 | 2♠ | ♥9 | -1 | +4 |
| +3.6 | Quarterfinal | SILVERMAN | 8 | 3NT | ♠2 | +2 | +0 |
| +3.4 | Quarterfinal | SILVERMAN | 54 | 2♥ | ♠7 | = | +1 |
| +2.7 | Quarterfinal | SILVERMAN | 2 | 1NT | ♥4 | +2 | -1 |
| +2.1 | Quarterfinal | SILVERMAN | 14 | 5♣ | ♥A | = | +0 |
| +1.9 | Quarterfinal | SILVERMAN | 47 | 2♥ | ♦K | = | +0 |
| +1.7 | Quarterfinal | SILVERMAN | 5 | 2♠ | ♦A | +2 | +6 |
| +1.7 | Quarterfinal | SILVERMAN | 9 | 3♦ | ♠J | = | +1 |
| +1.6 | Quarterfinal | SILVERMAN | 7 | 2♠ | ♥9 | = | +0 |
| +1.4 | Quarterfinal | SILVERMAN | 50 | 3NT | ♠7 | +3 | +9 |
| +0.4 | Quarterfinal | SILVERMAN | 10 | 1♠ | ♦3 | +2 | +0 |
| +0.1 | Quarterfinal | SILVERMAN | 48 | 3NT | ♠2 | +1 | +0 |
| +0.0 | Quarterfinal | SILVERMAN | 49 | 6♠ | ♥5 | +1 | +11 |
| +0.0 | Quarterfinal | SILVERMAN | 55 | 3NT | ♠10 | +1 | +1 |
| -0.1 | Quarterfinal | SILVERMAN | 51 | 4♥ | ♣Q | +1 | -13 |
| -0.3 | Quarterfinal | SILVERMAN | 53 | 2NTx | ♦Q | -1 | +1 |
| -0.6 | Quarterfinal | SILVERMAN | 13 | 3♥ | ♥2 | +2 | -10 |
| -1.3 | Quarterfinal | SILVERMAN | 1 | 1NT | ♦10 | +1 | +0 |
| -1.4 | Quarterfinal | SILVERMAN | 12 | 3NT | ♠10 | = | +0 |
| -1.6 | Quarterfinal | SILVERMAN | 52 | 3NT | ♦9 | +1 | +0 |
| -2.7 | Quarterfinal | SILVERMAN | 4 | 4♣ | ♥A | = | +0 |
| -4.4 | Quarterfinal | SILVERMAN | 6 | 3♥ | ♣A | +1 | -7 |
| -5.3 | Quarterfinal | SILVERMAN | 11 | 1NT | ♣2 | = | -6 |
| -5.3 | Quarterfinal | SILVERMAN | 43 | 3♦ | ♣A | -4 | -10 |
| -9.7 | Quarterfinal | SILVERMAN | 3 | 3NT | ♦8 | = | -10 |
| -12.9 | Quarterfinal | SILVERMAN | 56 | 4♥x | ♦9 | -3 | -14 |