ZHANG Yalan · YBM
vs par split: bidding +0.94 · play +0.74
Strength of schedule: opponents averaged -0.47/bd (an easy draw) → opponent-adjusted +1.53/bd
Card play — on target: opening leads 60.0% · declarer play 91.7% · defence 81.8%
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 50.0% (4) | 63.6% (11) |
| Declarer play | 75.0% (4) | 100.0% (8) |
| Defence | 71.4% (7) | 86.7% (15) |
Opening leads by suit led: ♠ 40.0% (5) · ♥ 100.0% (2) · ♦ 60.0% (5) · ♣ 66.7% (3)
vs par by strain: NT +1.00 (15) · a suit +1.97 (35)
vs par by level: part-score +0.43 (14) · game +1.00 (30) · slam +8.00 (6)
By role: declaring +2.43/bd (+0.11 vs par · 28) · defending +1.44/bd (+3.68 vs par · 22)
By vulnerability: vulnerable +2.15/bd (+1.64 vs par · 25) · not vulnerable +1.84/bd (+1.72 vs par · 25)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | C.Yeh | P.Nimityongskul – U.Kanokwatanawan | Open | 10 | +18.1 | +1.81 | +1.40 |
| Round 2 | J.Shih | V.Markowicz – K.Moszczynski | Closed | 10 | +11.1 | +1.11 | -2.00 |
| Round 6 | C.Yeh | S.Dewi – K.Murniati | Open | 10 | +33.3 | +3.33 | +3.80 |
| Round 8 | C.Yeh | K.Yamada – M.Ino | Closed | 10 | +16.1 | +1.61 | +1.80 |
| Round 11 | C.Yeh | J.Hu – Y.Chen | Closed | 10 | +21.1 | +2.11 | +3.40 |
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 |
|---|---|---|---|---|---|---|---|
| +13.6 | Round 2 | POLISH SENIORS | 13 | 7♦ | ♦10 | = | +13 |
| +13.0 | Round 6 | INDONESIA LADIES | 22 | 6♠ | ♦3 | -1 | +17 |
| +10.7 | Round 11 | ZHIYIJIA | 14 | 7♠ | ♠2 | -1 | +17 |
| +10.4 | Round 1 | CBLT THAILAND | 10 | 5♥ | ♠A | = | +13 |
| +8.5 | Round 11 | ZHIYIJIA | 20 | 5♦ | ♣4 | = | +10 |
| +7.3 | Round 8 | JAPAN SENIOR | 19 | 3NT | ♠3 | -3 | +10 |
| +6.6 | Round 6 | INDONESIA LADIES | 26 | 3NT | ♠7 | -1 | +16 |
| +6.3 | Round 11 | ZHIYIJIA | 17 | 5♣x | ♠J | -2 | +9 |
| +6.2 | Round 1 | CBLT THAILAND | 4 | 5♠x | ♦A | -1 | +7 |
| +5.0 | Round 1 | CBLT THAILAND | 9 | 3♠ | ♦2 | +1 | -1 |
| +4.8 | Round 8 | JAPAN SENIOR | 11 | 4♥ | ♦K | = | +0 |
| +4.5 | Round 2 | POLISH SENIORS | 18 | 4♠ | ♠7 | +2 | -9 |
| +4.5 | Round 6 | INDONESIA LADIES | 21 | 5♣ | ♠A | +1 | -5 |
| +4.3 | Round 8 | JAPAN SENIOR | 17 | 4♥x | ♣2 | -2 | -3 |
| +3.9 | Round 6 | INDONESIA LADIES | 29 | 4♥ | ♣K | -1 | +6 |
| +3.8 | Round 11 | ZHIYIJIA | 15 | 2♠ | ♥8 | -1 | +4 |
| +3.1 | Round 2 | POLISH SENIORS | 20 | 3♥ | ♠7 | = | +0 |
| +3.0 | Round 6 | INDONESIA LADIES | 25 | 4♥ | ♠5 | -3 | +10 |
| +2.8 | Round 8 | JAPAN SENIOR | 18 | 4♥ | ♣A | +1 | +0 |
| +2.5 | Round 1 | CBLT THAILAND | 8 | 3NT | ♦2 | +1 | +1 |
| +2.0 | Round 1 | CBLT THAILAND | 1 | 1♣ | ♦4 | +1 | +0 |
| +1.9 | Round 1 | CBLT THAILAND | 6 | 3NT | ♣2 | = | -2 |
| +1.6 | Round 1 | CBLT THAILAND | 3 | 3NT | ♥5 | +2 | +1 |
| +1.4 | Round 6 | INDONESIA LADIES | 28 | 2♥ | ♦Q | -2 | +0 |
| +1.2 | Round 2 | POLISH SENIORS | 12 | 3NT | ♣2 | +2 | +0 |
| +1.2 | Round 6 | INDONESIA LADIES | 23 | 3NT | ♠4 | = | -1 |
| +1.0 | Round 6 | INDONESIA LADIES | 24 | 5♣ | ♥5 | = | -1 |
| +1.0 | Round 8 | JAPAN SENIOR | 20 | 3NT | ♠3 | +3 | -13 |
| +0.9 | Round 2 | POLISH SENIORS | 19 | 5♦ | ♦7 | = | -2 |
| +0.9 | Round 11 | ZHIYIJIA | 16 | 6♣x | ♦10 | -2 | -5 |
| +0.8 | Round 8 | JAPAN SENIOR | 16 | 3♦ | ♠A | -2 | +11 |
| +0.7 | Round 8 | JAPAN SENIOR | 12 | 4♠ | ♣10 | -1 | +4 |
| +0.4 | Round 6 | INDONESIA LADIES | 27 | 4♠ | ♦Q | +1 | +0 |
| +0.0 | Round 11 | ZHIYIJIA | 18 | 1♣ | ♦3 | +1 | +1 |
| -0.9 | Round 2 | POLISH SENIORS | 15 | 5♥ | ♠A | +1 | -9 |
| -1.1 | Round 11 | ZHIYIJIA | 11 | 2♠ | ♦2 | = | +0 |
| -1.2 | Round 1 | CBLT THAILAND | 5 | 3NT | ♠A | +1 | -1 |
| -1.2 | Round 8 | JAPAN SENIOR | 13 | 1NT | ♠A | +2 | -1 |
| -1.3 | Round 1 | CBLT THAILAND | 7 | 3♠ | ♣2 | -1 | +1 |
| -1.7 | Round 6 | INDONESIA LADIES | 30 | 2NT | ♥Q | -1 | -4 |
| -1.9 | Round 2 | POLISH SENIORS | 11 | 4♠ | ♣A | -1 | +2 |
| -1.9 | Round 11 | ZHIYIJIA | 12 | 4♥ | ♣Q | +1 | +0 |
| -2.0 | Round 2 | POLISH SENIORS | 17 | 1NT | ♥2 | -2 | +0 |
| -2.0 | Round 11 | ZHIYIJIA | 13 | 3NT | ♠K | +1 | -1 |
| -2.2 | Round 8 | JAPAN SENIOR | 14 | 3♥ | ♣A | = | -1 |
| -2.2 | Round 8 | JAPAN SENIOR | 15 | 6NT | ♥Q | = | +11 |
| -3.0 | Round 2 | POLISH SENIORS | 14 | 3♦ | ♠2 | -1 | -4 |
| -4.1 | Round 11 | ZHIYIJIA | 19 | 3NT | ♠2 | +2 | -1 |
| -4.4 | Round 2 | POLISH SENIORS | 16 | 4♥ | ♦A | = | -11 |
| -9.0 | Round 1 | CBLT THAILAND | 2 | 6♠ | ♦A | = | -5 |