WANG Chang · TONGJI UNIVERSITY
428rank
-9.7Butler · 90 bds
-0.11per board
±3.9swing
+0.71vs par /bd · #100/672
-0.18adjusted /bd
by round
vs par split: bidding -0.17 · play +0.92
Strength of schedule: opponents averaged -0.07/bd (an easy draw) → opponent-adjusted -0.18/bd
Card play — on target: opening leads 86.7% #192 of 671 · declarer play 77.8% #343 of 671 · defence 83.3% #395 of 672
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | · | 86.7% (15) |
| Declarer play | · | 77.8% (18) |
| Defence | · | 83.3% (30) |
Opening leads by suit led: ♠ 100.0% (3) · ♥ 100.0% (2) · ♦ 100.0% (6) · ♣ 50.0% (4)
vs par by strain: a suit +0.75 (63)
vs par by level: part-score +0.97 (35) · game +0.42 (26) · slam +1.00 (2)
By role: declaring +0.58/bd (-0.91 vs par · 43) · defending -0.74/bd (+2.19 vs par · 47)
By vulnerability: vulnerable +0.02/bd (+1.31 vs par · 45) · not vulnerable -0.23/bd (+0.11 vs par · 45)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 2 | Z.Wang | J.Fajgelzon – L.Lee | Open | 10 | +9.4 | +0.94 | +4.40 |
| Round 4 | Y.Huang | Y.Huang – X.Wei | Closed | 10 | -19.1 | -1.91 | -1.90 |
| Round 5 | Z.Wang | J.He – Y.Huang | Closed | 10 | -5.3 | -0.53 | +0.00 |
| Round 7 | Z.Wang | J.George – J.Bojoh | Open | 10 | -13.7 | -1.37 | -0.30 |
| Round 8 | F.Liu | S.Morimura – T.Imakura | Open | 10 | -2.7 | -0.27 | +0.30 |
| Round 9 | F.Liu | G.Wei – CHEN J D | Closed | 10 | -3.1 | -0.31 | +0.00 |
| Round 10 | F.Liu | V.Cornell – M.Cornell | Open | 10 | +13.1 | +1.31 | +3.00 |
| Round 11 | Z.Wang | J.Liu – W.Yang | Closed | 10 | +12.4 | +1.24 | +1.80 |
| Round 12 | Z.Wang | H.Huang – Y.Gu | Open | 10 | -0.7 | -0.07 | -0.90 |
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 |
|---|---|---|---|---|---|---|---|
| +11.5 | Round 11 | BEIJING MANGUANFENGYUN | 12 | 2Nx | ♥3 | +1 | +6 |
| +11.0 | Round 2 | CANADA WOMEN | 12 | 4♥x | ♥5 | -3 | +12 |
| +8.8 | Round 11 | BEIJING MANGUANFENGYUN | 19 | 2♠ | ♣J | +3 | +9 |
| +7.3 | Round 12 | SHANGHAI THINK CLUB | 28 | 4♠ | ♦K | +1 | +5 |
| +4.7 | Round 7 | INDONESIA OPEN | 5 | 5♠x | ♣10 | -1 | +7 |
| +4.4 | Round 10 | STERN | 9 | 5♦ | ♥10 | -2 | +5 |
| +4.4 | Round 12 | SHANGHAI THINK CLUB | 29 | 3♠ | ♥Q | = | +6 |
| +4.2 | Round 12 | SHANGHAI THINK CLUB | 21 | 4♥ | ♦6 | -1 | +4 |
| +4.1 | Round 11 | BEIJING MANGUANFENGYUN | 18 | 3♠ | ♥6 | = | +6 |
| +3.9 | Round 5 | HUATIE HAIXING | 11 | 1N | ♠Q | = | +0 |
| +3.9 | Round 5 | HUATIE HAIXING | 17 | 2♠ | ♣3 | +1 | +6 |
| +3.7 | Round 9 | SHAN FENG | 21 | 3N | ♦J | = | +5 |
| +3.2 | Round 10 | STERN | 2 | 2♣ | ♥4 | -1 | +7 |
| +3.1 | Round 9 | SHAN FENG | 26 | 4♠ | ♣6 | -1 | +6 |
| +3.0 | Round 2 | CANADA WOMEN | 13 | 2♠ | ♣6 | = | -1 |
| +2.9 | Round 11 | BEIJING MANGUANFENGYUN | 15 | 4♠ | ♥A | -1 | -2 |
| +2.8 | Round 2 | CANADA WOMEN | 11 | 3N | ♥4 | -1 | +5 |
| +2.6 | Round 8 | NAKAMURA | 20 | 4♠ | ♣7 | = | +0 |
| +2.5 | Round 9 | SHAN FENG | 22 | 3♠ | ♣3 | +1 | +6 |
| +2.4 | Round 11 | BEIJING MANGUANFENGYUN | 17 | 2♠ | ♣Q | = | +0 |
| +2.3 | Round 5 | HUATIE HAIXING | 18 | 4♠ | ♣A | -1 | +5 |
| +2.3 | Round 10 | STERN | 8 | 2♠ | ♣J | +1 | +6 |
| +2.2 | Round 11 | BEIJING MANGUANFENGYUN | 13 | 2♥ | ♣3 | +1 | +2 |
| +2.2 | Round 12 | SHANGHAI THINK CLUB | 27 | 4♥ | ♦Q | = | -6 |
| +1.9 | Round 2 | CANADA WOMEN | 14 | 3N | ♥4 | +4 | +17 |
| +1.9 | Round 8 | NAKAMURA | 12 | 2N | ♣10 | -1 | +5 |
| +1.9 | Round 8 | NAKAMURA | 15 | 3♥ | ♠J | = | +0 |
| +1.5 | Round 9 | SHAN FENG | 30 | 3♠ | ♣K | = | +0 |
| +1.4 | Round 2 | CANADA WOMEN | 17 | 4♣ | ♠J | +1 | +8 |
| +1.4 | Round 10 | STERN | 6 | 4♠ | ♣K | +1 | +1 |
| +1.1 | Round 2 | CANADA WOMEN | 16 | 2♣ | ♠3 | = | -1 |
| +1.1 | Round 8 | NAKAMURA | 16 | 2♠ | ♥K | +1 | +0 |
| +1.0 | Round 10 | STERN | 4 | 2♠ | ♥A | -1 | +5 |
| +1.0 | Round 10 | STERN | 10 | 2♠ | ♣5 | +1 | +1 |
| +0.9 | Round 5 | HUATIE HAIXING | 14 | 3Nx | ♠7 | -1 | +0 |
| +0.9 | Round 10 | STERN | 1 | 1N | ♦A | -1 | +4 |
| +0.7 | Round 8 | NAKAMURA | 14 | 3♦ | ♥7 | -1 | +2 |
| +0.7 | Round 9 | SHAN FENG | 23 | 1N | ♥4 | = | +1 |
| +0.6 | Round 5 | HUATIE HAIXING | 15 | 3N | ♠J | +4 | +10 |
| +0.6 | Round 5 | HUATIE HAIXING | 20 | 4♠ | ♣A | = | -1 |
| +0.5 | Round 4 | SHANGHAI JIANQIAO | 6 | 3♠ | ♣10 | +1 | +10 |
| +0.5 | Round 9 | SHAN FENG | 29 | 2N | ♥5 | -1 | +0 |
| +0.4 | Round 9 | SHAN FENG | 28 | 5♦ | ♠A | +1 | -5 |
| +0.3 | Round 4 | SHANGHAI JIANQIAO | 8 | 5♦ | ♠A | -2 | -1 |
| +0.3 | Round 5 | HUATIE HAIXING | 12 | 2♦ | ♣A | -1 | +1 |
| +0.3 | Round 10 | STERN | 5 | 4♠ | ♦6 | +2 | +11 |
| +0.2 | Round 12 | SHANGHAI THINK CLUB | 25 | 3N | ♥5 | +1 | -5 |
| -0.1 | Round 7 | INDONESIA OPEN | 1 | 4♥ | ♦4 | = | -1 |
| -0.1 | Round 7 | INDONESIA OPEN | 9 | 4♥ | ♠8 | +1 | -11 |
| -0.1 | Round 11 | BEIJING MANGUANFENGYUN | 20 | 3N | ♠5 | +3 | -13 |
| -0.2 | Round 2 | CANADA WOMEN | 20 | 3N | ♥3 | +3 | +13 |
| -0.2 | Round 10 | STERN | 7 | 1N | ♦5 | = | -9 |
| -0.6 | Round 4 | SHANGHAI JIANQIAO | 7 | 1N | ♥2 | +1 | +1 |
| -0.7 | Round 7 | INDONESIA OPEN | 10 | 2♥ | ♣Q | +1 | +0 |
| -0.8 | Round 4 | SHANGHAI JIANQIAO | 10 | Pass | -3 | ||
| -0.8 | Round 7 | INDONESIA OPEN | 4 | 4♥ | ♦7 | +1 | +0 |
| -0.9 | Round 4 | SHANGHAI JIANQIAO | 2 | 3N | ♣6 | +2 | -1 |
| -0.9 | Round 7 | INDONESIA OPEN | 6 | 4♥ | ♦Q | +1 | +0 |
| -0.9 | Round 8 | NAKAMURA | 13 | 4♠ | ♠3 | +2 | -7 |
| -0.9 | Round 9 | SHAN FENG | 24 | 4♥ | ♦6 | = | +5 |
| -1.2 | Round 10 | STERN | 3 | 2♥ | ♦K | +2 | -1 |
| -1.4 | Round 8 | NAKAMURA | 19 | 2♠ | ♥K | -1 | +2 |
| -1.5 | Round 4 | SHANGHAI JIANQIAO | 3 | 3N | ♠2 | +1 | +1 |
| -1.5 | Round 7 | INDONESIA OPEN | 3 | 1N | ♣A | -3 | +8 |
| -1.5 | Round 8 | NAKAMURA | 18 | 2♠ | ♦Q | = | +0 |
| -1.7 | Round 2 | CANADA WOMEN | 15 | 4♥ | ♦K | +1 | +0 |
| -1.8 | Round 7 | INDONESIA OPEN | 2 | 1N | ♦8 | +1 | +0 |
| -2.5 | Round 8 | NAKAMURA | 17 | 3N | ♠8 | +2 | +5 |
| -2.7 | Round 4 | SHANGHAI JIANQIAO | 9 | 2♥ | ♥4 | -2 | -5 |
| -2.9 | Round 4 | SHANGHAI JIANQIAO | 5 | 2♥ | ♦A | = | -5 |
| -3.2 | Round 2 | CANADA WOMEN | 18 | 2♠ | ♥A | +1 | -1 |
| -3.2 | Round 5 | HUATIE HAIXING | 19 | 2♥ | ♣6 | +2 | -2 |
| -3.2 | Round 12 | SHANGHAI THINK CLUB | 26 | 3♥ | ♥2 | = | +0 |
| -3.3 | Round 12 | SHANGHAI THINK CLUB | 23 | 6♦ | ♠K | -2 | -8 |
| -3.4 | Round 11 | BEIJING MANGUANFENGYUN | 11 | 3N | ♠J | +1 | +0 |
| -3.5 | Round 12 | SHANGHAI THINK CLUB | 30 | 3♥ | ♦A | = | +0 |
| -3.6 | Round 12 | SHANGHAI THINK CLUB | 22 | 5♦ | ♥7 | -1 | -5 |
| -3.8 | Round 7 | INDONESIA OPEN | 7 | 3♠ | ♠Q | = | +0 |
| -4.0 | Round 4 | SHANGHAI JIANQIAO | 4 | 3♥ | ♠9 | -1 | -11 |
| -4.6 | Round 8 | NAKAMURA | 11 | 3N | ♥3 | +1 | -4 |
| -4.7 | Round 11 | BEIJING MANGUANFENGYUN | 16 | 5♠ | ♦9 | = | +0 |
| -5.4 | Round 12 | SHANGHAI THINK CLUB | 24 | 3♠ | ♦5 | = | +0 |
| -5.6 | Round 9 | SHAN FENG | 27 | 2♦ | ♥5 | -4 | -8 |
| -6.3 | Round 5 | HUATIE HAIXING | 13 | 3N | ♠2 | -1 | -11 |
| -6.5 | Round 4 | SHANGHAI JIANQIAO | 1 | 5♥x | ♠K | -2 | -5 |
| -6.7 | Round 2 | CANADA WOMEN | 19 | 3N | ♣K | -4 | -8 |
| -8.3 | Round 5 | HUATIE HAIXING | 16 | 2♥x | ♦K | -3 | -8 |
| -8.7 | Round 7 | INDONESIA OPEN | 8 | 5♦x | ♣2 | = | -6 |
| -9.0 | Round 9 | SHAN FENG | 25 | 3N | ♦5 | = | -10 |
| -11.3 | Round 11 | BEIJING MANGUANFENGYUN | 14 | 6♦ | ♥K | = | +10 |