YEH Chen · YBM
vs par split: bidding +1.08 · play -0.51
Strength of schedule: opponents averaged -0.16/bd (an easy draw) → opponent-adjusted +0.09/bd
Card play — on target: opening leads 92.3% #39 of 518 · declarer play 60.0% #473 of 517 · defence 78.3% #399 of 518
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 80.0% (5) | 100.0% (8) |
| Declarer play | · | 60.0% (5) |
| Defence | 77.8% (9) | 78.6% (14) |
Opening leads by suit led: ♠ 100.0% (3) · ♥ 100.0% (6) · ♦ 100.0% (2) · ♣ 50.0% (2)
vs par by strain: NT +1.50 (10) · a suit +0.24 (29)
vs par by level: part-score +1.59 (22) · game -0.73 (15) · slam -1.00 (2)
By role: declaring -0.26/bd (-1.82 vs par · 17) · defending +0.63/bd (+2.44 vs par · 23)
By vulnerability: vulnerable -0.20/bd (-0.30 vs par · 20) · not vulnerable +0.70/bd (+1.55 vs par · 20)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | Y.Zhang | L.Elmore – C.Compton | Open | 10 | +1.3 | +0.13 | +2.30 |
| Round 4 | Y.Zhang | Y.Wei – D.Yu | Open | 10 | +1.1 | +0.11 | +1.70 |
| Round 6 | Y.Zhang | G.Phipps – L.Weinger | Open | 10 | +1.6 | +0.16 | +1.00 |
| Round 7 | Y.Zhang | R.Taylor – A.Sontag | Open | 10 | +6.0 | +0.60 | -2.50 |
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 |
|---|---|---|---|---|---|---|---|
| +12.1 | Round 1 | HINZE | 9 | 2♣ | ♠4 | -4 | +11 |
| +11.2 | Round 4 | CRE8IVE | 17 | 5♣ | ♥5 | -4 | +12 |
| +8.8 | Round 6 | DONNER | 3 | 6♥ | ♦10 | = | +0 |
| +7.2 | Round 6 | DONNER | 4 | 2NT | ♥2 | +2 | +10 |
| +6.1 | Round 4 | CRE8IVE | 19 | 2♦ | ♦10 | +1 | +12 |
| +5.3 | Round 7 | CAYNE | 13 | 5♦x | ♠7 | -3 | -12 |
| +3.4 | Round 4 | CRE8IVE | 15 | 3NT | ♥8 | -1 | +4 |
| +3.2 | Round 6 | DONNER | 7 | 3♣ | ♠8 | +2 | +11 |
| +3.0 | Round 1 | HINZE | 5 | 3♠ | ♥Q | -1 | +5 |
| +2.8 | Round 1 | HINZE | 7 | 1♠ | ♥Q | -1 | +5 |
| +2.6 | Round 4 | CRE8IVE | 14 | 3♦ | ♠J | = | +0 |
| +2.6 | Round 7 | CAYNE | 18 | 6♣ | ♦K | = | -2 |
| +2.0 | Round 7 | CAYNE | 11 | Pass | +3 | ||
| +2.0 | Round 7 | CAYNE | 20 | 1NT | ♦7 | = | +11 |
| +1.6 | Round 7 | CAYNE | 17 | 3♠ | ♥A | = | -7 |
| +1.4 | Round 1 | HINZE | 1 | 2NT | ♠4 | -1 | -1 |
| +0.9 | Round 7 | CAYNE | 15 | 3♠ | ♥Q | -1 | -3 |
| +0.5 | Round 4 | CRE8IVE | 11 | 2♥ | ♦Q | = | +0 |
| +0.4 | Round 6 | DONNER | 8 | 2♠ | ♥2 | +2 | -6 |
| +0.3 | Round 1 | HINZE | 4 | 5♠ | ♦8 | = | +0 |
| +0.2 | Round 7 | CAYNE | 16 | 4♠ | ♥4 | = | -1 |
| +0.1 | Round 4 | CRE8IVE | 18 | 4♣ | ♠5 | -2 | -1 |
| -0.5 | Round 6 | DONNER | 5 | 4♠x | ♣A | +2 | +5 |
| -0.8 | Round 6 | DONNER | 6 | 4♠ | ♦7 | = | +1 |
| -1.0 | Round 1 | HINZE | 6 | 3NT | ♥5 | = | +1 |
| -1.0 | Round 1 | HINZE | 10 | 3♦ | ♠A | -1 | +1 |
| -1.0 | Round 4 | CRE8IVE | 12 | 2♠ | ♥A | +2 | -1 |
| -1.2 | Round 6 | DONNER | 2 | 3NT | ♥Q | +1 | -1 |
| -1.5 | Round 6 | DONNER | 10 | 3♥ | ♠K | -1 | +0 |
| -2.1 | Round 6 | DONNER | 9 | 2♠ | ♣A | -1 | +2 |
| -2.2 | Round 1 | HINZE | 3 | 5♦ | ♥A | = | +11 |
| -2.4 | Round 7 | CAYNE | 14 | 5♣ | ♥A | = | +0 |
| -3.0 | Round 7 | CAYNE | 12 | 3♣ | ♦7 | +1 | -9 |
| -3.2 | Round 7 | CAYNE | 19 | 3♠ | ♣4 | -2 | -5 |
| -4.2 | Round 4 | CRE8IVE | 16 | 2NT | ♦5 | +1 | +10 |
| -5.0 | Round 1 | HINZE | 8 | 3NT | ♣4 | = | +0 |
| -8.0 | Round 4 | CRE8IVE | 20 | 3NT | ♣5 | = | -10 |
| -9.1 | Round 1 | HINZE | 2 | 2♠ | ♥A | +1 | -10 |
| -9.6 | Round 4 | CRE8IVE | 13 | 3NT | ♠2 | -3 | -9 |
| -11.9 | Round 6 | DONNER | 1 | 4♠x | ♥A | = | -12 |