🇨🇳 LIU Chang · CHINA RDFZ HU
vs par split: bidding +0.00 · play -0.71
Strength of schedule: opponents averaged +0.17/bd (a tough draw) → opponent-adjusted -0.40/bd
Card play — on target: opening leads 90.0% #17 of 95 · declarer play 80.0% #28 of 95 · defence 80.0% #66 of 95
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 66.7% (3) | 100.0% (7) |
| Declarer play | 50.0% (2) | 84.6% (13) |
| Defence | 66.7% (9) | 87.5% (16) |
Opening leads by suit led: ♠ 75.0% (4) · ♥ 100.0% (1) · ♦ 100.0% (2) · ♣ 100.0% (3)
vs par by strain: NT -1.86 (14) · a suit -0.33 (42)
vs par by level: part-score +0.29 (17) · game -0.91 (35) · slam -3.25 (4)
By role: declaring -0.70/bd (-1.71 vs par · 31) · defending -0.40/bd (+0.52 vs par · 25)
By vulnerability: vulnerable -0.52/bd (-1.79 vs par · 28) · not vulnerable -0.60/bd (+0.36 vs par · 28)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | Y.Yin | S.Ng – T.Hung | Closed | 8 | -1.5 | -0.19 | -1.88 |
| Round 2 | Y.Yin | S.Beukema – E.Vandewiele | Open | 8 | -4.7 | -0.59 | +1.62 |
| Round 3 | H.Wei | E.Imakiire – T.Yamamoto | Closed | 8 | -5.3 | -0.66 | -3.25 |
| Round 4 | Y.Yin | P.Marcinowski – M.Sobczak | Open | 8 | -3.0 | -0.38 | -1.50 |
| Round 6 | Y.Yin | E.Evacic – I.Bilusic | Closed | 8 | -16.6 | -2.08 | -2.50 |
| Round 7 | Y.Yin | P.Crisafulli Sadaba – S.Hermann | Closed | 8 | +4.1 | +0.51 | +0.00 |
| Round 8 | Y.Yin | E.Singhal – I.Robson | Closed | 8 | -4.5 | -0.56 | +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 |
|---|---|---|---|---|---|---|---|
| +13.8 | Round 7 | 🇦🇹 AUSTRIA | 19 | 3NTx | ♣J | -4 | +15 |
| +7.9 | Round 2 | 🇧🇪 BELGIUM | 13 | 4♥ | ♠A | -1 | +11 |
| +7.7 | Round 3 | 🇯🇵 JAPAN | 17 | 6♥ | ♦A | -1 | +11 |
| +7.2 | Round 1 | 🇭🇰 HONG KONG | 7 | 4♠ | ♦2 | -1 | +6 |
| +7.2 | Round 6 | 🇭🇷 CROATIA | 16 | 4♠x | ♠3 | -3 | -4 |
| +7.0 | Round 2 | 🇧🇪 BELGIUM | 11 | 4♠x | ♣2 | -1 | +8 |
| +6.2 | Round 8 | ALSO INDIA | 26 | 4♠x | ♥10 | = | +5 |
| +5.4 | Round 1 | 🇭🇰 HONG KONG | 4 | 4♠ | ♣5 | +1 | +4 |
| +4.5 | Round 7 | 🇦🇹 AUSTRIA | 24 | 5♦x | ♦2 | -2 | +5 |
| +3.4 | Round 4 | 🇵🇱 POLAND | 29 | 3NT | ♥6 | +1 | +0 |
| +2.7 | Round 1 | 🇭🇰 HONG KONG | 2 | 6♥ | ♠9 | = | +0 |
| +2.2 | Round 7 | 🇦🇹 AUSTRIA | 23 | 2♥ | ♣J | +1 | +0 |
| +2.0 | Round 8 | ALSO INDIA | 25 | 3NT | ♦6 | +2 | +0 |
| +1.9 | Round 3 | 🇯🇵 JAPAN | 21 | 3♠ | ♦4 | +1 | +1 |
| +1.7 | Round 2 | 🇧🇪 BELGIUM | 9 | 4♠ | ♣7 | +1 | +0 |
| +1.5 | Round 4 | 🇵🇱 POLAND | 28 | 4♥ | ♠2 | -2 | +2 |
| +1.3 | Round 6 | 🇭🇷 CROATIA | 15 | 4♥ | ♦A | +1 | +0 |
| +1.1 | Round 8 | ALSO INDIA | 28 | 3♥ | ♦K | -1 | +10 |
| +0.9 | Round 4 | 🇵🇱 POLAND | 26 | 2♥ | ♦6 | -1 | +0 |
| +0.6 | Round 6 | 🇭🇷 CROATIA | 13 | 4♠ | ♦K | +1 | +0 |
| +0.4 | Round 1 | 🇭🇰 HONG KONG | 1 | 4♠ | ♦9 | -1 | +2 |
| +0.1 | Round 3 | 🇯🇵 JAPAN | 18 | 6NT | ♥10 | +1 | -11 |
| -0.0 | Round 4 | 🇵🇱 POLAND | 32 | 1NT | ♠Q | = | -9 |
| -0.1 | Round 4 | 🇵🇱 POLAND | 25 | 3♦ | ♦4 | -1 | -3 |
| -0.3 | Round 4 | 🇵🇱 POLAND | 27 | 4♥ | ♦K | = | +0 |
| -0.8 | Round 8 | ALSO INDIA | 27 | 3♥ | ♠3 | = | +0 |
| -0.9 | Round 3 | 🇯🇵 JAPAN | 22 | 2♥ | ♥3 | = | +0 |
| -1.0 | Round 7 | 🇦🇹 AUSTRIA | 22 | 4♠ | ♦10 | +3 | -10 |
| -1.1 | Round 2 | 🇧🇪 BELGIUM | 15 | 1NT | ♦J | = | +1 |
| -1.1 | Round 7 | 🇦🇹 AUSTRIA | 18 | 4♥x | ♦10 | -1 | -2 |
| -1.2 | Round 3 | 🇯🇵 JAPAN | 20 | 3NT | ♠3 | +1 | -10 |
| -1.2 | Round 4 | 🇵🇱 POLAND | 30 | 3NT | ♣K | = | +2 |
| -1.4 | Round 2 | 🇧🇪 BELGIUM | 14 | 1NT | ♠10 | -2 | +1 |
| -1.5 | Round 8 | ALSO INDIA | 29 | 2♠ | ♠6 | +3 | +9 |
| -1.8 | Round 2 | 🇧🇪 BELGIUM | 10 | 5♦ | ♥A | = | +0 |
| -1.8 | Round 8 | ALSO INDIA | 32 | 3♦ | ♣K | +1 | +0 |
| -1.9 | Round 6 | 🇭🇷 CROATIA | 9 | 4♥ | ♣Q | = | +0 |
| -2.3 | Round 1 | 🇭🇰 HONG KONG | 8 | 4♠ | ♦2 | -1 | -4 |
| -2.4 | Round 7 | 🇦🇹 AUSTRIA | 17 | 2♦ | ♥Q | +1 | +0 |
| -3.1 | Round 3 | 🇯🇵 JAPAN | 23 | 2♠ | ♣Q | = | +1 |
| -3.6 | Round 3 | 🇯🇵 JAPAN | 19 | 6♠ | ♦3 | -2 | -13 |
| -4.1 | Round 1 | 🇭🇰 HONG KONG | 3 | 3NT | ♠2 | = | -6 |
| -4.3 | Round 7 | 🇦🇹 AUSTRIA | 21 | 4♠ | ♦K | +1 | -7 |
| -4.5 | Round 1 | 🇭🇰 HONG KONG | 5 | 4♥ | ♠5 | -1 | -5 |
| -4.7 | Round 8 | ALSO INDIA | 31 | 3NT | ♦9 | = | +1 |
| -4.8 | Round 6 | 🇭🇷 CROATIA | 12 | 3♥ | ♠8 | +1 | -6 |
| -4.9 | Round 6 | 🇭🇷 CROATIA | 14 | 3♦ | ♥Q | -5 | +5 |
| -5.0 | Round 8 | ALSO INDIA | 30 | 5♦x | ♠Q | -3 | -5 |
| -5.5 | Round 6 | 🇭🇷 CROATIA | 11 | 4♥ | ♦5 | -1 | -5 |
| -5.6 | Round 2 | 🇧🇪 BELGIUM | 12 | 3NT | ♠Q | +1 | +1 |
| -6.2 | Round 3 | 🇯🇵 JAPAN | 24 | 3♦x | ♠6 | -2 | -5 |
| -6.3 | Round 1 | 🇭🇰 HONG KONG | 6 | 5♦ | ♣5 | -1 | -12 |
| -7.2 | Round 4 | 🇵🇱 POLAND | 31 | 5♣x | ♠A | -4 | -4 |
| -7.6 | Round 7 | 🇦🇹 AUSTRIA | 20 | 3NT | ♠5 | +3 | -1 |
| -8.6 | Round 6 | 🇭🇷 CROATIA | 10 | 3NT | ♥4 | = | -10 |
| -11.4 | Round 2 | 🇧🇪 BELGIUM | 16 | 4♥x | ♣7 | -3 | -9 |