CHEN Yichao · LUCKY SEVEN
vs par split: bidding +0.64 · play -0.05
Strength of schedule: opponents averaged +0.17/bd (a tough draw) → opponent-adjusted +0.31/bd
Card play — on target: opening leads 71.4% #109 of 187 · declarer play 72.2% #101 of 187 · defence 85.7% #101 of 187
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 0.0% (2) | 83.3% (12) |
| Declarer play | 80.0% (5) | 69.2% (13) |
| Defence | 83.3% (6) | 86.4% (22) |
Opening leads by suit led: ♠ 75.0% (4) · ♥ 50.0% (6) · ♦ 100.0% (3) · ♣ 100.0% (1)
vs par by strain: NT +0.46 (13) · a suit +0.63 (43)
vs par by level: part-score +0.71 (14) · game +0.98 (41) · slam -17.00 (1)
By role: declaring -0.06/bd (-1.57 vs par · 28) · defending +0.33/bd (+2.75 vs par · 28)
By vulnerability: vulnerable -0.90/bd (-0.08 vs par · 26) · not vulnerable +1.03/bd (+1.17 vs par · 30)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | X.Zhang | L.Yang – H.Wang | Closed | 7 | -3.0 | -0.43 | +1.00 |
| Round 2 | X.Zhang | L.Berkowitz – D.Berkowitz | Closed | 7 | +0.8 | +0.11 | -1.43 |
| Round 3 | X.Zhang | J.Upmark – K.Bertheau | Closed | 7 | -7.9 | -1.13 | +2.43 |
| Round 4 | X.Zhang | J.Wang – J.Liu | Closed | 7 | +4.2 | +0.60 | +2.14 |
| Round 5 | X.Zhang | M.Seamon – S.Moss | Closed | 7 | -15.7 | -2.24 | -4.43 |
| Round 6 | X.Zhang | Q.Zhou – L.Bao | Closed | 7 | +18.8 | +2.69 | +4.71 |
| Round 7 | X.Zhang | X.Li – Y.Wang | Closed | 7 | +13.0 | +1.86 | +1.86 |
| Round 8 | X.Zhang | F.Fantoni – D.Compton | Closed | 7 | -2.6 | -0.37 | -1.57 |
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 |
|---|---|---|---|---|---|---|---|
| +13.0 | Round 6 | NORCO | 13 | 4♠x | ♣10 | +1 | +13 |
| +7.9 | Round 7 | BEIJING TRINERGY | 16 | 4♠ | ♣8 | -1 | +10 |
| +7.0 | Round 1 | GEELY AUTOMOBILE | 1 | 5♦ | ♣4 | -1 | +10 |
| +5.4 | Round 8 | NUNES | 25 | 3NT | ♠3 | +3 | +1 |
| +5.3 | Round 2 | TAYLOR | 9 | 2♥x | ♦7 | -2 | +9 |
| +5.1 | Round 7 | BEIJING TRINERGY | 21 | 4♠ | ♥A | -2 | +7 |
| +4.2 | Round 5 | MOSS | 2 | 3NT | ♥2 | -1 | +6 |
| +4.0 | Round 7 | BEIJING TRINERGY | 15 | 3NT | ♥J | = | +0 |
| +4.0 | Round 8 | NUNES | 28 | 4♥ | ♦A | -2 | +6 |
| +3.8 | Round 4 | CHIME | 24 | 2♠ | ♣A | = | +5 |
| +3.7 | Round 2 | TAYLOR | 12 | 3♥ | ♥6 | +2 | +6 |
| +3.4 | Round 3 | PLATINUM CEM | 15 | 4♠ | ♦Q | -1 | +6 |
| +3.4 | Round 4 | CHIME | 25 | 5♦ | ♠K | -1 | +6 |
| +3.2 | Round 5 | MOSS | 1 | 4♠ | ♥4 | = | +0 |
| +3.2 | Round 6 | NORCO | 9 | 5♣ | ♦A | = | +14 |
| +2.8 | Round 3 | PLATINUM CEM | 17 | 4♥ | ♥Q | -1 | +5 |
| +2.7 | Round 6 | NORCO | 14 | 4♠ | ♥K | -1 | +5 |
| +2.5 | Round 6 | NORCO | 8 | 3NT | ♥10 | -1 | +5 |
| +2.3 | Round 7 | BEIJING TRINERGY | 17 | 4♠ | ♥2 | +2 | +1 |
| +2.1 | Round 3 | PLATINUM CEM | 21 | 4♥ | ♦10 | +1 | +0 |
| +1.4 | Round 1 | GEELY AUTOMOBILE | 2 | 3NT | ♠A | +2 | +1 |
| +1.2 | Round 4 | CHIME | 23 | 3NT | ♥9 | = | +0 |
| +1.1 | Round 6 | NORCO | 10 | 4♠ | ♦6 | = | +0 |
| +0.9 | Round 1 | GEELY AUTOMOBILE | 4 | 2♠ | ♥A | = | -1 |
| +0.8 | Round 7 | BEIJING TRINERGY | 20 | 5♠ | ♦A | = | +0 |
| +0.6 | Round 4 | CHIME | 22 | 4♠ | ♦K | +1 | +0 |
| +0.4 | Round 5 | MOSS | 3 | 3♠ | ♥6 | = | +0 |
| +0.4 | Round 8 | NUNES | 22 | 4♥ | ♥2 | = | -1 |
| +0.3 | Round 8 | NUNES | 24 | 2♠x | ♦A | -2 | -4 |
| -0.1 | Round 5 | MOSS | 5 | 2♥ | ♣Q | -1 | +1 |
| -0.4 | Round 2 | TAYLOR | 14 | 4♠ | ♣J | +2 | -14 |
| -0.4 | Round 3 | PLATINUM CEM | 19 | 3NT | ♣4 | = | +0 |
| -0.5 | Round 6 | NORCO | 12 | 2NT | ♥4 | +2 | -6 |
| -0.7 | Round 4 | CHIME | 28 | 1NT | ♥K | -1 | -1 |
| -0.9 | Round 1 | GEELY AUTOMOBILE | 3 | 4♣ | ♠K | -1 | +5 |
| -1.1 | Round 1 | GEELY AUTOMOBILE | 6 | 4♥ | ♣K | +1 | +0 |
| -1.4 | Round 2 | TAYLOR | 11 | 5♦x | ♥A | -2 | -4 |
| -1.5 | Round 4 | CHIME | 26 | 5♣ | ♦A | = | +5 |
| -1.6 | Round 3 | PLATINUM CEM | 20 | 4♠ | ♦Q | +1 | +0 |
| -1.6 | Round 8 | NUNES | 23 | 3NT | ♥2 | = | +0 |
| -1.7 | Round 2 | TAYLOR | 13 | 3NT | ♦7 | +4 | -2 |
| -1.8 | Round 8 | NUNES | 27 | 4♠ | ♥5 | +1 | -1 |
| -2.0 | Round 2 | TAYLOR | 10 | 4♠ | ♣6 | +1 | +0 |
| -2.4 | Round 7 | BEIJING TRINERGY | 18 | 4♠ | ♠6 | +1 | +0 |
| -2.6 | Round 4 | CHIME | 27 | 2♠ | ♠3 | = | +0 |
| -2.7 | Round 2 | TAYLOR | 8 | 4♠x | ♠A | -2 | -5 |
| -3.2 | Round 6 | NORCO | 11 | 3NT | ♠2 | = | +2 |
| -3.5 | Round 1 | GEELY AUTOMOBILE | 5 | 1NT | ♠3 | -2 | +0 |
| -3.8 | Round 3 | PLATINUM CEM | 16 | 3♥ | ♠K | +2 | +6 |
| -4.7 | Round 7 | BEIJING TRINERGY | 19 | 4♠ | ♦10 | -1 | -5 |
| -6.8 | Round 1 | GEELY AUTOMOBILE | 7 | 4♠x | ♥3 | -1 | -8 |
| -7.2 | Round 5 | MOSS | 7 | 6♠ | ♦K | -1 | -17 |
| -7.5 | Round 5 | MOSS | 6 | 4♥ | ♥2 | -2 | -11 |
| -8.7 | Round 5 | MOSS | 4 | 3♥x | ♠A | -1 | -10 |
| -9.3 | Round 8 | NUNES | 26 | 4♠ | ♥Q | -1 | -12 |
| -10.4 | Round 3 | PLATINUM CEM | 18 | 4♠ | ♦8 | +1 | +0 |