ZHUANG Zejun · CHINA Open
vs par split: bidding +0.67 · play +0.27
Strength of schedule: opponents averaged +0.95/bd (a tough draw) → opponent-adjusted +0.93/bd
Card play — on target: opening leads 80.0% · declarer play 58.3% · defence 100.0%
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 100.0% (1) | 75.0% (4) |
| Declarer play | 100.0% (2) | 50.0% (10) |
| Defence | 100.0% (3) | 100.0% (9) |
Opening leads by suit led: ♥ 100.0% (1) · ♦ 50.0% (2) · ♣ 100.0% (2)
vs par by strain: NT -0.71 (7) · a suit +1.44 (23)
vs par by level: part-score -0.09 (11) · game +0.44 (16) · slam +7.33 (3)
By role: declaring -0.51/bd (-0.61 vs par · 18) · defending +0.69/bd (+3.25 vs par · 12)
By vulnerability: vulnerable -0.20/bd (+1.23 vs par · 13) · not vulnerable +0.11/bd (+0.71 vs par · 17)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 11 | G.Chen | Z.Fu – X.Hou | Closed | 10 | +19.7 | +1.97 | +2.60 |
| Round 12 | G.Chen | B.Drijver – S.Brink | Open | 10 | -12.1 | -1.21 | -0.70 |
| Round 14 | G.Chen | C.Willenken – H.Bertens | Closed | 10 | -8.4 | -0.84 | +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 |
|---|---|---|---|---|---|---|---|
| +7.9 | Round 14 | USA 2 Mixed | 18 | 5♣x | ♣K | -1 | +9 |
| +6.6 | Round 11 | PD TIMES | 15 | 6♣ | ♦K | -1 | +13 |
| +5.5 | Round 12 | SWISS TEAM | 29 | 3NT | ♥10 | -1 | +6 |
| +5.3 | Round 11 | PD TIMES | 14 | 5♣ | ♥8 | -1 | +5 |
| +5.1 | Round 11 | PD TIMES | 11 | 4♥ | ♣A | = | +8 |
| +4.0 | Round 11 | PD TIMES | 19 | 3NT | ♥A | = | +0 |
| +3.2 | Round 11 | PD TIMES | 16 | 4♥ | ♣9 | -1 | +5 |
| +3.1 | Round 14 | USA 2 Mixed | 16 | 4♠x | ♥A | -1 | +6 |
| +2.4 | Round 14 | USA 2 Mixed | 19 | 3♥ | ♣2 | -1 | +4 |
| +1.7 | Round 14 | USA 2 Mixed | 17 | 4♠ | ♦10 | +1 | +0 |
| +1.4 | Round 11 | PD TIMES | 12 | 4♥ | ♦J | = | +0 |
| +1.2 | Round 11 | PD TIMES | 17 | 2♥ | ♠2 | -1 | +8 |
| +1.0 | Round 12 | SWISS TEAM | 24 | 3NT | ♥J | -3 | +7 |
| +0.7 | Round 12 | SWISS TEAM | 28 | 4♥ | ♠7 | +1 | -11 |
| +0.3 | Round 12 | SWISS TEAM | 23 | 2♥ | ♥5 | +1 | +0 |
| -0.2 | Round 11 | PD TIMES | 18 | 3♥ | ♣J | -1 | +0 |
| -0.7 | Round 12 | SWISS TEAM | 26 | 2♣ | ♦Q | = | -2 |
| -1.0 | Round 12 | SWISS TEAM | 21 | 1♥ | ♠K | +1 | +0 |
| -1.4 | Round 12 | SWISS TEAM | 30 | 2NT | ♥Q | -1 | -5 |
| -1.4 | Round 14 | USA 2 Mixed | 13 | 2♠ | ♥Q | = | +0 |
| -1.9 | Round 14 | USA 2 Mixed | 11 | 3NT | ♣6 | = | +1 |
| -2.3 | Round 11 | PD TIMES | 20 | 3♣ | ♠6 | -2 | -3 |
| -2.4 | Round 12 | SWISS TEAM | 22 | 6♣ | ♦A | = | +2 |
| -2.4 | Round 14 | USA 2 Mixed | 20 | 3♥ | ♦A | -1 | +1 |
| -3.0 | Round 14 | USA 2 Mixed | 14 | 2NT | ♣9 | -1 | -4 |
| -4.6 | Round 11 | PD TIMES | 13 | 3NT | ♣J | = | -10 |
| -5.6 | Round 14 | USA 2 Mixed | 15 | 4♠ | ♦2 | -1 | +2 |
| -6.8 | Round 12 | SWISS TEAM | 27 | 4♠ | ♦6 | -2 | -11 |
| -7.3 | Round 12 | SWISS TEAM | 25 | 6♠x | ♣2 | = | +7 |
| -9.2 | Round 14 | USA 2 Mixed | 12 | 4♠ | ♣6 | -1 | -10 |