YIN Yichen · CHINA SUN
vs par split: bidding -0.36 · play +0.50
Strength of schedule: opponents averaged -0.06/bd (an easy draw) → opponent-adjusted +0.14/bd
Card play — on target: opening leads 73.3% #62 of 74 · declarer play 87.0% #5 of 74 · defence 85.7% #37 of 74
Bidding activity — not a pass: 50.8% #9 of 74 (97/191)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 50.0% (6) | 88.9% (9) |
| Declarer play | 100.0% (4) | 84.2% (19) |
| Defence | 81.8% (11) | 87.5% (24) |
Opening leads by suit led: ♠ 80.0% (5) · ♥ 40.0% (5) · ♦ 100.0% (1) · ♣ 100.0% (4)
vs par by strain: NT +2.19 (16) · a suit -0.46 (54)
vs par by level: part-score +0.97 (30) · game +0.19 (37) · slam -8.67 (3)
By role: declaring -0.58/bd (-2.11 vs par · 35) · defending +0.99/bd (+2.40 vs par · 35)
By vulnerability: vulnerable -1.03/bd (-0.89 vs par · 36) · not vulnerable +1.52/bd (+1.24 vs par · 34)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | Y.Zhou | M.Grochowski – P.Jasinski | Open | 10 | +30.4 | +3.04 | +2.00 |
| Round 3 | B.Xiong | S.Kar – S.Bar | Closed | 10 | -2.3 | -0.23 | +1.10 |
| Round 4 | B.Xiong | M.Litterst – P.Pabst | Closed | 10 | +7.6 | +0.76 | -2.40 |
| Round 5 | Y.Zhou | R.Madej – A.Pigulski | Open | 10 | -12.4 | -1.24 | +0.40 |
| Round 7 | B.Xiong | L.Trendak – K.Konopko | Open | 10 | +14.5 | +1.45 | +1.60 |
| Round 8 | Y.Zhou | L.Weiss Selway – M.Jindra | Closed | 10 | -10.2 | -1.02 | -1.90 |
| Round 10 | Y.Zhou | 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 |
| +7.2 | Round 1 | POLAND | 23 | 3NTx | ♠T | -1 | +2 |
| +6.5 | Round 3 | INDIA A | 17 | 3♠ | ♥T | = | +10 |
| +6.0 | Round 4 | CARDSAGAINSTURSANITY | 28 | 3NT | ♦6 | -3 | +5 |
| +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 4 | CARDSAGAINSTURSANITY | 30 | 4♠ | ♣Q | = | -1 |
| +4.6 | Round 8 | AUSTRIA | 6 | 4♥ | ♣3 | -2 | +11 |
| +4.5 | Round 10 | SLOVENIJA | 27 | 5♣ | ♠A | -3 | +7 |
| +4.1 | Round 4 | CARDSAGAINSTURSANITY | 21 | 5♣ | ♠3 | = | -1 |
| +3.9 | Round 7 | POLISH DODOS | 28 | 4♠ | ♣T | = | +7 |
| +3.5 | Round 4 | CARDSAGAINSTURSANITY | 23 | 6♠ | ♥7 | +1 | -13 |
| +3.3 | Round 3 | INDIA A | 14 | 5♦x | ♥K | -2 | +11 |
| +3.3 | Round 7 | POLISH DODOS | 29 | 1NT | ♥8 | = | +0 |
| +3.1 | Round 7 | POLISH DODOS | 22 | 2♦ | ♣Q | = | +5 |
| +2.9 | Round 7 | POLISH DODOS | 27 | 2♥ | ♥3 | +3 | +6 |
| +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 |
| +2.1 | Round 4 | CARDSAGAINSTURSANITY | 24 | 3♣ | ♦2 | +2 | -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 |
| +1.4 | Round 4 | CARDSAGAINSTURSANITY | 27 | 3♠ | ♥3 | = | +0 |
| +1.2 | Round 7 | POLISH DODOS | 23 | 5♥ | ♠6 | -1 | -1 |
| +1.1 | Round 1 | POLAND | 21 | 4♠ | ♥J | = | +0 |
| +1.1 | Round 3 | INDIA A | 18 | 4♠ | ♦T | +1 | -11 |
| +1.1 | Round 8 | AUSTRIA | 4 | 3NT | ♦5 | +3 | -12 |
| +0.7 | Round 3 | INDIA A | 12 | 5♣ | ♠J | = | -2 |
| +0.7 | Round 3 | INDIA A | 16 | 4♠ | ♠8 | = | +0 |
| +0.7 | Round 7 | POLISH DODOS | 24 | 3♠ | ♣A | = | -1 |
| +0.7 | Round 7 | POLISH DODOS | 25 | 1NT | ♠3 | = | +1 |
| +0.5 | Round 1 | POLAND | 22 | 3♦ | ♠A | -1 | -2 |
| +0.3 | Round 1 | POLAND | 30 | 2♥ | ♠6 | -1 | +2 |
| +0.1 | Round 7 | POLISH DODOS | 21 | 3♦ | ♥8 | = | +0 |
| -0.0 | Round 10 | SLOVENIJA | 24 | 3NT | ♥A | -1 | -5 |
| -0.1 | Round 7 | POLISH DODOS | 26 | 2♠ | ♥K | +1 | +0 |
| -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 3 | INDIA A | 15 | 4♠ | ♥K | +1 | +0 |
| -0.9 | Round 3 | INDIA A | 19 | 3NT | ♣4 | +1 | +11 |
| -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 7 | POLISH DODOS | 30 | 4♦ | ♠A | +1 | -1 |
| -1.5 | Round 10 | SLOVENIJA | 26 | 3♦ | ♣3 | -1 | +1 |
| -1.7 | Round 4 | CARDSAGAINSTURSANITY | 26 | 6♠ | ♠2 | = | +0 |
| -1.9 | Round 1 | POLAND | 24 | 3NT | ♥4 | +1 | +0 |
| -2.1 | Round 4 | CARDSAGAINSTURSANITY | 25 | 3♠ | ♣J | -1 | +1 |
| -2.3 | Round 3 | INDIA A | 11 | 1NT | ♦J | -1 | +1 |
| -2.5 | Round 4 | CARDSAGAINSTURSANITY | 29 | 4♥ | ♣A | +1 | +0 |
| -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 |
| -4.1 | Round 3 | INDIA A | 13 | 3♠ | ♣3 | +1 | +1 |
| -4.1 | Round 8 | AUSTRIA | 7 | 3♥ | ♠3 | +1 | -10 |
| -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 |
| -6.2 | Round 10 | SLOVENIJA | 23 | 4♥x | ♦2 | -2 | -9 |
| -6.7 | Round 3 | INDIA A | 20 | 2♠ | ♥7 | +3 | -10 |
| -7.2 | Round 5 | ANIA | 4 | 5♦ | ♥K | -2 | -7 |
| -7.9 | Round 4 | CARDSAGAINSTURSANITY | 22 | 4♥x | ♠8 | = | -9 |
| -9.6 | Round 8 | AUSTRIA | 3 | 3NTx | ♦A | -2 | -8 |
| -10.4 | Round 10 | SLOVENIJA | 29 | 6♠ | ♦2 | -2 | -13 |