ZHOU Yi · CHINA SUN
vs par split: bidding -1.16 · play -0.43
Strength of schedule: opponents averaged +0.07/bd (a tough draw) → opponent-adjusted -0.72/bd
Card play — on target: opening leads 78.9% #45 of 74 · declarer play 43.8% #73 of 74 · defence 87.1% #31 of 74
Bidding activity — not a pass: 49.7% #13 of 74 (99/199)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 80.0% (5) | 78.6% (14) |
| Declarer play | 40.0% (5) | 45.5% (11) |
| Defence | 81.8% (11) | 90.0% (20) |
Opening leads by suit led: ♠ 50.0% (4) · ♥ 100.0% (4) · ♦ 90.0% (10) · ♣ 0.0% (1)
vs par by strain: NT -0.74 (23) · a suit -2.00 (47)
vs par by level: part-score -0.12 (24) · game -1.95 (43) · slam -8.00 (3)
By role: declaring -2.12/bd (-4.90 vs par · 39) · defending +0.89/bd (+2.58 vs par · 31)
By vulnerability: vulnerable -1.64/bd (-3.06 vs par · 36) · not vulnerable +0.12/bd (-0.03 vs par · 34)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | Y.Yin | M.Grochowski – P.Jasinski | Open | 10 | +30.4 | +3.04 | +2.00 |
| Round 2 | C.Liu | W.Cheung – L.Fung | Open | 10 | -14.6 | -1.46 | -2.90 |
| Round 5 | Y.Yin | R.Madej – A.Pigulski | Open | 10 | -12.4 | -1.24 | +0.40 |
| Round 6 | C.Liu | T.Guichet – L.Bonin | Closed | 10 | -29.2 | -2.92 | -6.30 |
| Round 8 | Y.Yin | L.Weiss Selway – M.Jindra | Closed | 10 | -10.2 | -1.02 | -1.90 |
| Round 9 | C.Liu | C.Bakke – J.Freeman | Open | 10 | -5.8 | -0.58 | -2.60 |
| Round 10 | Y.Yin | T.Drnovsek – J.Strohsack | Closed | 10 | -13.2 | -1.32 | +0.20 |
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 |
|---|---|---|---|---|---|---|---|
| +13.4 | Round 1 | POLAND | 25 | 2♥x | ♦Q | -5 | +10 |
| +11.3 | Round 10 | SLOVENIJA | 21 | 3NT | ♣K | -2 | +13 |
| +7.5 | Round 6 | FRANCE | 18 | 3NT | ♠J | -5 | +8 |
| +7.4 | Round 9 | WASHED UP | 20 | 3NT | ♥T | +1 | +11 |
| +7.2 | Round 1 | POLAND | 23 | 3NTx | ♠T | -1 | +2 |
| +7.1 | Round 9 | WASHED UP | 16 | 6NT | ♠7 | = | +0 |
| +5.9 | Round 1 | POLAND | 26 | 3♦ | ♣6 | +1 | +10 |
| +5.8 | Round 5 | ANIA | 6 | 3NT | ♥7 | -2 | +11 |
| +5.0 | Round 5 | ANIA | 1 | 3NT | ♦2 | -1 | +11 |
| +4.7 | Round 6 | FRANCE | 11 | 5♠x | ♦K | -2 | -3 |
| +4.6 | Round 8 | AUSTRIA | 6 | 4♥ | ♣3 | -2 | +11 |
| +4.5 | Round 10 | SLOVENIJA | 27 | 5♣ | ♠A | -3 | +7 |
| +3.8 | Round 9 | WASHED UP | 14 | 6♣ | ♥2 | +1 | -11 |
| +2.9 | Round 2 | EXPIRED YOUTH | 1 | 4♥ | ♠4 | +2 | +2 |
| +2.8 | Round 2 | EXPIRED YOUTH | 10 | 3NT | ♠5 | = | +0 |
| +2.6 | Round 8 | AUSTRIA | 8 | 3♣ | ♦9 | -1 | +10 |
| +2.4 | Round 5 | ANIA | 8 | 3♣ | ♥6 | -1 | +4 |
| +2.3 | Round 1 | POLAND | 29 | 2♦ | ♣8 | = | -1 |
| +2.2 | Round 9 | WASHED UP | 17 | 4♥ | ♣2 | = | -1 |
| +2.1 | Round 2 | EXPIRED YOUTH | 5 | 2NT | ♥K | -1 | +6 |
| +1.9 | Round 8 | AUSTRIA | 9 | 3♠ | ♥Q | -2 | +0 |
| +1.8 | Round 1 | POLAND | 27 | 2♥ | ♠A | -2 | -1 |
| +1.8 | Round 8 | AUSTRIA | 1 | 3♦ | ♠A | -1 | +3 |
| +1.1 | Round 1 | POLAND | 21 | 4♠ | ♥J | = | +0 |
| +1.1 | Round 8 | AUSTRIA | 4 | 3NT | ♦5 | +3 | -12 |
| +0.5 | Round 1 | POLAND | 22 | 3♦ | ♠A | -1 | -2 |
| +0.3 | Round 1 | POLAND | 30 | 2♥ | ♠6 | -1 | +2 |
| +0.1 | Round 9 | WASHED UP | 11 | 2♠ | ♠T | = | +8 |
| -0.0 | Round 10 | SLOVENIJA | 24 | 3NT | ♥A | -1 | -5 |
| -0.1 | Round 2 | EXPIRED YOUTH | 4 | 5♦ | ♥A | +2 | -13 |
| -0.1 | Round 10 | SLOVENIJA | 28 | 5♦ | ♥A | -1 | +2 |
| -0.2 | Round 1 | POLAND | 28 | 5♥x | ♠A | -3 | +0 |
| -0.3 | Round 8 | AUSTRIA | 2 | 4♠ | ♦A | = | +0 |
| -0.6 | Round 6 | FRANCE | 12 | 3NT | ♦2 | -1 | -4 |
| -0.9 | Round 2 | EXPIRED YOUTH | 9 | 1♠ | ♥T | -1 | -6 |
| -0.9 | Round 5 | ANIA | 2 | 3♠ | ♦K | -1 | -7 |
| -0.9 | Round 5 | ANIA | 5 | 4♠ | ♥8 | +1 | +0 |
| -0.9 | Round 10 | SLOVENIJA | 25 | 4♣ | ♦8 | = | +8 |
| -1.3 | Round 2 | EXPIRED YOUTH | 6 | 4♥ | ♦K | -1 | +1 |
| -1.4 | Round 9 | WASHED UP | 15 | 3♦ | ♥Q | -3 | -1 |
| -1.5 | Round 10 | SLOVENIJA | 26 | 3♦ | ♣3 | -1 | +1 |
| -1.6 | Round 6 | FRANCE | 20 | 4♠ | ♦K | +1 | -13 |
| -1.9 | Round 1 | POLAND | 24 | 3NT | ♥4 | +1 | +0 |
| -2.1 | Round 6 | FRANCE | 15 | 2♣ | ♥2 | +1 | -7 |
| -2.5 | Round 2 | EXPIRED YOUTH | 7 | 2♥ | ♠K | +1 | -6 |
| -2.7 | Round 9 | WASHED UP | 12 | 1NT | ♦6 | -2 | -6 |
| -2.8 | Round 9 | WASHED UP | 13 | 1NT | ♥7 | = | -11 |
| -3.0 | Round 5 | ANIA | 3 | 1NT | ♥3 | = | -5 |
| -3.0 | Round 5 | ANIA | 9 | 3NT | ♦3 | +1 | +11 |
| -3.5 | Round 8 | AUSTRIA | 5 | 4♠ | ♦9 | -1 | -12 |
| -4.0 | Round 2 | EXPIRED YOUTH | 8 | 5♦ | ♥K | = | +1 |
| -4.1 | Round 8 | AUSTRIA | 7 | 3♥ | ♠3 | +1 | -10 |
| -4.5 | Round 6 | FRANCE | 14 | 4♠ | ♥T | +3 | -2 |
| -4.7 | Round 8 | AUSTRIA | 10 | 3NT | ♥7 | +2 | -1 |
| -4.7 | Round 10 | SLOVENIJA | 30 | 5♦x | ♠A | -3 | -2 |
| -5.1 | Round 5 | ANIA | 7 | 4♥ | ♣K | -2 | -8 |
| -5.2 | Round 10 | SLOVENIJA | 22 | 5♦ | ♦9 | = | +0 |
| -5.5 | Round 5 | ANIA | 10 | 4♥ | ♥9 | -1 | -6 |
| -5.9 | Round 6 | FRANCE | 13 | 4♥ | ♣T | -2 | -7 |
| -6.2 | Round 10 | SLOVENIJA | 23 | 4♥x | ♦2 | -2 | -9 |
| -6.6 | Round 2 | EXPIRED YOUTH | 2 | 3♥ | ♦2 | +1 | -2 |
| -7.0 | Round 2 | EXPIRED YOUTH | 3 | 4♠ | ♣Q | -1 | -12 |
| -7.2 | Round 5 | ANIA | 4 | 5♦ | ♥K | -2 | -7 |
| -7.4 | Round 9 | WASHED UP | 18 | 3NT | ♦T | = | -3 |
| -8.3 | Round 6 | FRANCE | 17 | 3NT | ♥Q | -3 | -11 |
| -8.3 | Round 6 | FRANCE | 19 | 3NT | ♣6 | -1 | -12 |
| -9.6 | Round 8 | AUSTRIA | 3 | 3NTx | ♦A | -2 | -8 |
| -10.1 | Round 6 | FRANCE | 16 | 4♠ | ♦Q | -1 | -12 |
| -10.4 | Round 10 | SLOVENIJA | 29 | 6♠ | ♦2 | -2 | -13 |
| -12.1 | Round 9 | WASHED UP | 19 | 3NT | ♥7 | -1 | -12 |