CHEN Jun · CHINA 2
vs par split: bidding +0.29 · play -0.66
Strength of schedule: opponents averaged -0.10/bd (an easy draw) → opponent-adjusted -1.36/bd
Card play — on target: opening leads 73.3% #92 of 107 · declarer play 70.0% #77 of 107 · defence 87.5% #55 of 107
Bidding activity — not a pass: 45.4% #45 of 107 (74/163)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 60.0% (5) | 80.0% (10) |
| Declarer play | 100.0% (1) | 66.7% (9) |
| Defence | 81.8% (11) | 90.5% (21) |
Opening leads by suit led: ♠ 80.0% (10) · ♥ 100.0% (1) · ♦ 50.0% (2) · ♣ 50.0% (2)
vs par by strain: NT -0.88 (17) · a suit -0.15 (39)
vs par by level: part-score -1.19 (21) · game -0.27 (33) · slam +6.50 (2)
By role: declaring -1.78/bd (-4.71 vs par · 24) · defending -0.87/bd (+2.88 vs par · 32)
By vulnerability: vulnerable -1.80/bd (+0.25 vs par · 28) · not vulnerable -0.72/bd (-1.00 vs par · 28)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 2 | J.Zhang | A.Palma – A.Manno | Open | 14 | -13.0 | -0.93 | +0.79 |
| Round 3 | J.Zhang | I.Bacalu – R.Gunev | Open | 14 | -33.0 | -2.36 | +0.79 |
| Round 5 | J.Zhang | K.Anklesaria – D.Filipowicz | Closed | 14 | -9.6 | -0.69 | -0.29 |
| Round 7 | J.Zhang | A.Grossack – L.Lebowitz | Open | 14 | -15.1 | -1.08 | -2.79 |
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 |
|---|---|---|---|---|---|---|---|
| +8.8 | Round 2 | OVERDECK | 21 | 5♥x | ♠K | -2 | +12 |
| +6.3 | Round 7 | LEBOWITZ | 14 | 2NT | ♠9 | +1 | +6 |
| +6.0 | Round 7 | LEBOWITZ | 9 | 3NT | ♠5 | -1 | +10 |
| +4.3 | Round 5 | MAVERICKS | 6 | 3NT | ♠K | +1 | +10 |
| +3.5 | Round 5 | MAVERICKS | 8 | 4♥ | ♦K | = | -11 |
| +3.3 | Round 7 | LEBOWITZ | 2 | 4♦ | ♠4 | -2 | -5 |
| +3.0 | Round 2 | OVERDECK | 27 | 5♣ | ♠9 | -1 | +8 |
| +2.7 | Round 3 | CERCOL ROM | 12 | 3♦ | ♥7 | +1 | +1 |
| +2.7 | Round 5 | MAVERICKS | 1 | 4♥ | ♠2 | = | +0 |
| +2.3 | Round 2 | OVERDECK | 25 | 2♦ | ♦Q | +1 | +7 |
| +1.7 | Round 7 | LEBOWITZ | 7 | 3NT | ♠3 | +2 | +1 |
| +1.6 | Round 2 | OVERDECK | 15 | 2♠ | ♣7 | = | +0 |
| +1.6 | Round 5 | MAVERICKS | 10 | 3♣ | ♥A | +1 | +10 |
| +1.4 | Round 3 | CERCOL ROM | 1 | 4♥ | ♣9 | = | +0 |
| +1.2 | Round 2 | OVERDECK | 23 | 4♠ | ♦5 | +2 | +13 |
| +1.1 | Round 5 | MAVERICKS | 12 | 4♥ | ♣A | -2 | +5 |
| +0.9 | Round 5 | MAVERICKS | 2 | 4♠ | ♥7 | +2 | -11 |
| +0.8 | Round 2 | OVERDECK | 16 | 3NT | ♣J | = | +1 |
| +0.3 | Round 3 | CERCOL ROM | 7 | 4♠ | ♦Q | = | +13 |
| +0.2 | Round 5 | MAVERICKS | 11 | 4♥ | ♠5 | = | +1 |
| +0.2 | Round 7 | LEBOWITZ | 5 | 4♥ | ♣T | = | +1 |
| -0.1 | Round 2 | OVERDECK | 26 | 4♠ | ♥T | +1 | +0 |
| -0.5 | Round 3 | CERCOL ROM | 5 | 2NT | ♠2 | = | -1 |
| -0.6 | Round 7 | LEBOWITZ | 6 | 1NT | ♣3 | = | +0 |
| -0.7 | Round 3 | CERCOL ROM | 4 | 3NT | ♣2 | = | +0 |
| -1.1 | Round 3 | CERCOL ROM | 14 | 3♥ | ♦T | = | +0 |
| -1.3 | Round 5 | MAVERICKS | 3 | 3NT | ♦7 | = | -2 |
| -1.3 | Round 5 | MAVERICKS | 4 | 4♥ | ♠7 | = | -1 |
| -1.7 | Round 2 | OVERDECK | 20 | 5♣ | ♦K | = | +2 |
| -1.7 | Round 3 | CERCOL ROM | 13 | 4♥ | ♣K | -1 | -12 |
| -1.9 | Round 7 | LEBOWITZ | 10 | 2♦ | ♣8 | = | +1 |
| -2.1 | Round 7 | LEBOWITZ | 4 | 2♠ | ♥7 | = | -6 |
| -2.1 | Round 7 | LEBOWITZ | 11 | 1NT | ♠4 | = | -5 |
| -2.4 | Round 7 | LEBOWITZ | 8 | 3NT | ♦J | -2 | -5 |
| -2.5 | Round 3 | CERCOL ROM | 6 | 4♠ | ♦2 | -2 | -3 |
| -2.6 | Round 3 | CERCOL ROM | 9 | 3♥ | ♦4 | -1 | +0 |
| -2.7 | Round 2 | OVERDECK | 24 | 3♥ | ♠K | -1 | -4 |
| -2.7 | Round 5 | MAVERICKS | 5 | 4♥ | ♣7 | +2 | -11 |
| -2.7 | Round 7 | LEBOWITZ | 12 | 3♥ | ♣5 | -2 | +0 |
| -2.8 | Round 3 | CERCOL ROM | 8 | 5♦ | ♠K | = | +0 |
| -2.9 | Round 3 | CERCOL ROM | 3 | 2NT | ♥7 | = | +0 |
| -3.6 | Round 2 | OVERDECK | 17 | 2♣x | ♦J | -3 | -2 |
| -3.6 | Round 7 | LEBOWITZ | 1 | 3♥ | ♣A | +1 | -6 |
| -3.7 | Round 2 | OVERDECK | 22 | 2♥ | ♦9 | +1 | -6 |
| -4.2 | Round 5 | MAVERICKS | 7 | 3NT | ♣2 | +2 | +12 |
| -4.3 | Round 5 | MAVERICKS | 14 | 3♥ | ♠5 | = | -6 |
| -4.4 | Round 5 | MAVERICKS | 9 | 4♠x | ♥T | -2 | +0 |
| -4.9 | Round 2 | OVERDECK | 28 | 3NT | ♥T | = | +1 |
| -5.3 | Round 2 | OVERDECK | 18 | 4♦x | ♥4 | -3 | -9 |
| -5.3 | Round 3 | CERCOL ROM | 10 | 4♠ | ♥K | = | +0 |
| -5.7 | Round 5 | MAVERICKS | 13 | 4♥ | ♠4 | = | +0 |
| -7.9 | Round 3 | CERCOL ROM | 11 | 6♠ | ♥A | = | +0 |
| -7.9 | Round 7 | LEBOWITZ | 13 | 3NT | ♦7 | -4 | -14 |
| -8.7 | Round 2 | OVERDECK | 19 | 3NT | ♠7 | -1 | -12 |
| -9.3 | Round 7 | LEBOWITZ | 3 | 3NT | ♥7 | +3 | -17 |
| -9.4 | Round 3 | CERCOL ROM | 2 | 6♦ | ♠J | = | +13 |