🇨🇳 ZHANG Boxin · CHINA1
vs par split: bidding +0.48 · play -1.02
Strength of schedule: opponents averaged +0.23/bd (a tough draw) → opponent-adjusted +0.32/bd
Card play — on target: opening leads 66.7% #35 of 39 · declarer play 84.6% #6 of 39 · defence 68.2% #32 of 39
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 100.0% (2) | 60.0% (10) |
| Declarer play | 0.0% (1) | 91.7% (12) |
| Defence | 50.0% (8) | 78.6% (14) |
Opening leads by suit led: ♠ 100.0% (5) · ♥ 0.0% (3) · ♦ 100.0% (1) · ♣ 66.7% (3)
vs par by strain: NT -0.58 (12) · a suit -0.53 (30)
vs par by level: part-score +1.67 (18) · game -2.32 (22) · slam -1.00 (2)
By role: declaring +1.02/bd (-0.70 vs par · 20) · defending -0.74/bd (-0.41 vs par · 22)
By vulnerability: vulnerable +0.75/bd (-1.33 vs par · 21) · not vulnerable -0.56/bd (+0.24 vs par · 21)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Semifinal | B.Jiang | J.Blom – T.Van De Paverd | Open | 14 | +3.1 | +0.22 | +1.64 |
| Final | J.Bai | C.Smith – K.Vohra | Open | 14 | +6.6 | +0.47 | -1.50 |
| Final | J.Bai | M.Hu – A.Zhou | Closed | 14 | -5.7 | -0.41 | -1.79 |
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 |
|---|---|---|---|---|---|---|---|
| +10.7 | Semifinal | 🇳🇱 NETHERLANDS | 16 | 6♣ | ♠4 | -1 | +11 |
| +7.4 | Final | 🇺🇸 USA | 2 | 3NT | ♠7 | = | -1 |
| +7.4 | Final | 🇺🇸 USA | 36 | 4NT | ♥J | -6 | +4 |
| +7.3 | Semifinal | 🇳🇱 NETHERLANDS | 17 | 4♣ | ♠K | -1 | +12 |
| +6.6 | Semifinal | 🇳🇱 NETHERLANDS | 23 | 2♥ | ♠2 | -3 | +8 |
| +5.7 | Final | 🇺🇸 USA | 8 | 3NT | ♣9 | -4 | +3 |
| +4.6 | Final | 🇺🇸 USA | 38 | 3NT | ♠10 | -1 | +6 |
| +3.1 | Final | 🇺🇸 USA | 1 | 3♦ | ♦9 | +2 | +4 |
| +3.1 | Final | 🇺🇸 USA | 3 | 4♦ | ♠A | -1 | -1 |
| +3.1 | Final | 🇺🇸 USA | 4 | 2♥ | ♣4 | -1 | +11 |
| +3.1 | Final | 🇺🇸 USA | 37 | 1♠ | ♣Q | +1 | +1 |
| +3.0 | Semifinal | 🇳🇱 NETHERLANDS | 26 | 3NT | ♠9 | = | -1 |
| +3.0 | Final | 🇺🇸 USA | 41 | 4♠ | ♦A | = | +0 |
| +2.7 | Final | 🇺🇸 USA | 10 | 6♠ | ♦K | +1 | -13 |
| +2.7 | Final | 🇺🇸 USA | 31 | 3♠ | ♥3 | = | +7 |
| +2.4 | Final | 🇺🇸 USA | 34 | 2NT | ♣4 | +1 | -1 |
| +1.7 | Final | 🇺🇸 USA | 14 | 3♣ | ♥A | = | +5 |
| +1.3 | Semifinal | 🇳🇱 NETHERLANDS | 22 | 2♥ | ♦K | = | +5 |
| +1.0 | Semifinal | 🇳🇱 NETHERLANDS | 24 | 2♦ | ♠A | +2 | +0 |
| +0.6 | Semifinal | 🇳🇱 NETHERLANDS | 15 | 4♠ | ♣K | +1 | +0 |
| +0.6 | Semifinal | 🇳🇱 NETHERLANDS | 27 | 4♥ | ♣4 | = | +3 |
| +0.0 | Semifinal | 🇳🇱 NETHERLANDS | 18 | 3NT | ♦J | +2 | +0 |
| -0.0 | Final | 🇺🇸 USA | 42 | 3NT | ♥4 | +1 | -1 |
| -0.7 | Final | 🇺🇸 USA | 6 | 2♠ | ♦2 | -1 | +2 |
| -0.7 | Final | 🇺🇸 USA | 12 | 3♥ | ♦A | -1 | -5 |
| -0.7 | Final | 🇺🇸 USA | 13 | 3♦ | ♣2 | +1 | +1 |
| -0.9 | Final | 🇺🇸 USA | 5 | 3♥ | ♣6 | = | -6 |
| -1.4 | Final | 🇺🇸 USA | 32 | 4♠ | ♥2 | +1 | -1 |
| -1.6 | Final | 🇺🇸 USA | 29 | 3NT | ♣6 | +1 | +0 |
| -2.0 | Final | 🇺🇸 USA | 39 | 4♥x | ♣Q | -1 | -5 |
| -2.0 | Final | 🇺🇸 USA | 40 | 5♣ | ♠A | = | +2 |
| -2.6 | Final | 🇺🇸 USA | 35 | 5♣ | ♥3 | +2 | -14 |
| -3.3 | Semifinal | 🇳🇱 NETHERLANDS | 28 | 2♠ | ♣K | = | +0 |
| -3.4 | Semifinal | 🇳🇱 NETHERLANDS | 20 | 3NT | ♠7 | +1 | +0 |
| -3.9 | Final | 🇺🇸 USA | 11 | 4♣ | ♠8 | = | -1 |
| -5.4 | Semifinal | 🇳🇱 NETHERLANDS | 25 | 4♥ | ♣A | = | +1 |
| -6.3 | Final | 🇺🇸 USA | 7 | 4♠ | ♥9 | = | -10 |
| -6.6 | Semifinal | 🇳🇱 NETHERLANDS | 19 | 3NT | ♦6 | = | -6 |
| -7.0 | Final | 🇺🇸 USA | 9 | 4♠ | ♣A | -1 | -10 |
| -8.7 | Final | 🇺🇸 USA | 33 | 3♥x | ♣A | +1 | -12 |
| -9.3 | Semifinal | 🇳🇱 NETHERLANDS | 21 | 3NT | ♣A | = | -10 |
| -10.6 | Final | 🇺🇸 USA | 30 | 4♠ | ♣J | = | -11 |