ZHANG Yalan · YEH MIX
188rank
-15.5Butler · 21 bds
-0.74per board
±4.4swing
-1.76vs par /bd
-0.33adjusted /bd
by round
vs par split: bidding -0.40 · play -0.90
Strength of schedule: opponents averaged +0.41/bd (a tough draw) → opponent-adjusted -0.33/bd
Card play — on target: opening leads 50.0% · declarer play 60.0% · defence 90.9%
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | · | 50.0% (2) |
| Declarer play | 0.0% (1) | 75.0% (4) |
| Defence | 100.0% (2) | 88.9% (9) |
Opening leads by suit led: ♦ 100.0% (1) · ♣ 0.0% (1)
vs par by strain: NT -6.75 (4) · a suit -0.59 (17)
vs par by level: part-score -1.86 (7) · game -1.71 (14)
By role: declaring -2.14/bd (-3.56 vs par · 9) · defending +0.32/bd (-0.42 vs par · 12)
By vulnerability: vulnerable -1.41/bd (-0.64 vs par · 11) · not vulnerable +0.00/bd (-3.00 vs par · 10)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | C.Yeh | X.Chen – H.Zheng | Closed | 7 | -9.7 | -1.39 | -2.57 |
| Round 6 | C.Yeh | J.Liu – Y.Li | Closed | 7 | -4.5 | -0.64 | -2.57 |
| Round 7 | C.Yeh | R.Welland – S.Auken | Closed | 7 | -1.3 | -0.19 | -0.14 |
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 |
|---|---|---|---|---|---|---|---|
| +6.3 | Round 7 | SALVO | 21 | 5♥x | ♦K | -2 | +5 |
| +5.8 | Round 6 | CHIME | 14 | 5♥x | ♠A | -2 | +4 |
| +4.7 | Round 7 | SALVO | 19 | 4♠ | ♦10 | -1 | +5 |
| +4.6 | Round 1 | HUBEI QIAOXIE | 7 | 4♠ | ♥2 | -1 | +6 |
| +3.3 | Round 6 | CHIME | 8 | 2♠ | ♣9 | +3 | +2 |
| +3.2 | Round 6 | CHIME | 11 | 3NT | ♠2 | = | -2 |
| +1.1 | Round 1 | HUBEI QIAOXIE | 6 | 4♥ | ♣K | +1 | +0 |
| +0.6 | Round 7 | SALVO | 15 | 2♦ | ♥A | -2 | +5 |
| +0.1 | Round 7 | SALVO | 20 | 4♠ | ♥3 | = | +1 |
| -0.4 | Round 1 | HUBEI QIAOXIE | 2 | 3NT | ♠A | +1 | +0 |
| -0.5 | Round 1 | HUBEI QIAOXIE | 3 | 5♦ | ♣2 | -2 | -6 |
| -1.1 | Round 6 | CHIME | 10 | 4♠ | ♦6 | = | +0 |
| -1.8 | Round 1 | HUBEI QIAOXIE | 4 | 1♠ | ♣2 | +2 | +0 |
| -2.3 | Round 7 | SALVO | 17 | 4♠ | ♥6 | +2 | -1 |
| -2.5 | Round 6 | CHIME | 12 | 2♥ | ♦2 | -3 | +3 |
| -3.2 | Round 6 | CHIME | 9 | 3NT | ♥2 | = | -14 |
| -3.9 | Round 7 | SALVO | 16 | 3♠ | ♣8 | = | -7 |
| -4.5 | Round 1 | HUBEI QIAOXIE | 5 | 2♠ | ♦8 | -2 | -7 |
| -6.8 | Round 7 | SALVO | 18 | 3♠ | ♦7 | +3 | -9 |
| -8.2 | Round 1 | HUBEI QIAOXIE | 1 | 5♦x | ♥A | -1 | -11 |
| -10.0 | Round 6 | CHIME | 13 | 4NT | ♦A | +3 | -11 |