CAI Yang · CHINA OPEN TEAM 1
vs par split: bidding +0.37 · play -0.02
Strength of schedule: opponents averaged +0.31/bd (a tough draw) → opponent-adjusted +0.52/bd
Card play — on target: opening leads 88.9% #37 of 675 · declarer play 77.3% #312 of 675 · defence 91.9% #82 of 675
Bidding activity — not a pass: 51.3% #26 of 675 (117/228)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 85.7% (7) | 90.9% (11) |
| Declarer play | 63.6% (11) | 90.9% (11) |
| Defence | 92.3% (13) | 91.7% (24) |
Opening leads by suit led: ♠ 85.7% (7) · ♥ 100.0% (4) · ♦ 66.7% (3) · ♣ 100.0% (4)
vs par by strain: NT -0.56 (32) · a suit +0.90 (52)
vs par by level: part-score -0.79 (24) · game +0.70 (54) · slam +1.67 (6)
By role: declaring -0.03/bd (-2.13 vs par · 47) · defending +0.52/bd (+3.49 vs par · 37)
By vulnerability: vulnerable +0.40/bd (+0.79 vs par · 42) · not vulnerable +0.03/bd (-0.10 vs par · 42)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 2 | J.Chen | S.Lee – D.Kim | Closed | 14 | +0.1 | +0.01 | -2.36 |
| Round 3 | J.Chen | P.Patreuha – J.Patreuha | Open | 14 | -12.2 | -0.87 | -0.79 |
| Round 4 | J.Chen | M.Nowosadzki – K.Nowak | Open | 14 | +3.7 | +0.26 | +0.79 |
| Round 6 | J.Chen | B.Platnick – K.Rosenberg | Open | 14 | +18.6 | +1.33 | +3.00 |
| Round 7 | J.Chen | W.Ho – G.Ho | Closed | 14 | -8.0 | -0.57 | -1.07 |
| Round 8 | J.Chen | T.Verbeek – D.Molenaar | Closed | 14 | +15.6 | +1.11 | +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 |
|---|---|---|---|---|---|---|---|
| +12.2 | Round 6 | ROSENBERG | 23 | 6♦ | ♠2 | -1 | +13 |
| +9.7 | Round 3 | MAVERICKS | 11 | 7♣ | ♣3 | = | +0 |
| +9.3 | Round 7 | HOBRA | 2 | 6♣ | ♠J | = | +0 |
| +8.4 | Round 6 | ROSENBERG | 26 | 3NT | ♥Q | = | +3 |
| +7.9 | Round 2 | SEOUL | 20 | 4♥ | ♠3 | +1 | +0 |
| +7.4 | Round 8 | TEAMNL OPEN | 26 | 3♦ | ♣3 | +3 | +10 |
| +7.3 | Round 8 | TEAMNL OPEN | 28 | 7♠ | ♠4 | = | +0 |
| +6.3 | Round 4 | ZIMMERMANN | 26 | 3NT | ♥2 | +1 | +1 |
| +5.5 | Round 2 | SEOUL | 24 | 2♣ | ♠4 | -4 | +7 |
| +5.3 | Round 2 | SEOUL | 21 | 3NT | ♠5 | -2 | +6 |
| +5.0 | Round 7 | HOBRA | 7 | 3♠ | ♥2 | -1 | +11 |
| +4.6 | Round 4 | ZIMMERMANN | 20 | 3NT | ♣Q | -1 | +6 |
| +4.4 | Round 3 | MAVERICKS | 2 | 4♠ | ♣4 | -2 | +12 |
| +4.4 | Round 6 | ROSENBERG | 15 | 4♠ | ♣3 | = | +11 |
| +4.2 | Round 8 | TEAMNL OPEN | 21 | 5♥x | ♣6 | -2 | +5 |
| +4.0 | Round 4 | ZIMMERMANN | 19 | 2♣x | ♦K | -2 | -7 |
| +3.9 | Round 4 | ZIMMERMANN | 25 | 2NT | ♦J | -2 | +6 |
| +3.8 | Round 2 | SEOUL | 17 | 3NT | ♠8 | +1 | +0 |
| +3.7 | Round 2 | SEOUL | 19 | 5♣ | ♦A | = | +0 |
| +3.7 | Round 6 | ROSENBERG | 17 | 6♦ | ♠A | -1 | +8 |
| +3.6 | Round 4 | ZIMMERMANN | 23 | 3NT | ♥T | -1 | +12 |
| +3.1 | Round 7 | HOBRA | 11 | 5♦ | ♥A | -1 | +5 |
| +3.1 | Round 8 | TEAMNL OPEN | 18 | 1NT | ♣9 | +1 | +0 |
| +3.1 | Round 8 | TEAMNL OPEN | 22 | 4♠ | ♣K | +1 | +1 |
| +2.9 | Round 8 | TEAMNL OPEN | 19 | 5♦ | ♥J | -1 | +5 |
| +2.7 | Round 3 | MAVERICKS | 4 | 4♠ | ♥Q | -2 | +2 |
| +2.7 | Round 4 | ZIMMERMANN | 15 | 3NT | ♥Q | +2 | +1 |
| +2.6 | Round 6 | ROSENBERG | 24 | 3NT | ♦2 | = | +0 |
| +2.5 | Round 3 | MAVERICKS | 8 | 4♣ | ♥K | = | +1 |
| +2.5 | Round 8 | TEAMNL OPEN | 25 | 2♥ | ♠4 | -1 | +4 |
| +1.9 | Round 7 | HOBRA | 14 | 4♥ | ♠8 | = | -1 |
| +1.8 | Round 6 | ROSENBERG | 28 | 1NT | ♠Q | -2 | -1 |
| +1.6 | Round 4 | ZIMMERMANN | 18 | 5♠ | ♣6 | = | +13 |
| +1.2 | Round 7 | HOBRA | 3 | 4♠ | ♦J | -1 | -2 |
| +1.1 | Round 2 | SEOUL | 16 | 2♥ | ♣A | = | +5 |
| +0.8 | Round 4 | ZIMMERMANN | 27 | 3NT | ♥5 | = | +0 |
| +0.8 | Round 8 | TEAMNL OPEN | 16 | 5♥ | ♦4 | +1 | +11 |
| +0.7 | Round 6 | ROSENBERG | 22 | 3NT | ♥5 | +2 | +0 |
| +0.5 | Round 2 | SEOUL | 28 | 3NT | ♣T | = | +1 |
| +0.3 | Round 2 | SEOUL | 25 | 4♥ | ♠4 | +1 | +0 |
| +0.2 | Round 3 | MAVERICKS | 3 | 4♥ | ♠A | +1 | +11 |
| +0.1 | Round 3 | MAVERICKS | 9 | 3NT | ♠Q | -2 | -8 |
| -0.0 | Round 7 | HOBRA | 6 | 3♣ | ♣Q | +1 | +0 |
| -0.2 | Round 7 | HOBRA | 1 | 4♠ | ♥2 | +1 | +0 |
| -0.3 | Round 2 | SEOUL | 15 | 3NT | ♠3 | = | -1 |
| -0.3 | Round 6 | ROSENBERG | 19 | 3NT | ♠2 | +1 | +0 |
| -0.7 | Round 7 | HOBRA | 5 | 2♠ | ♦K | = | -1 |
| -0.7 | Round 8 | TEAMNL OPEN | 17 | 5♠ | ♣T | = | +8 |
| -0.8 | Round 6 | ROSENBERG | 20 | 2NT | ♠A | -1 | +11 |
| -1.0 | Round 3 | MAVERICKS | 1 | 3NT | ♦7 | = | +0 |
| -1.0 | Round 8 | TEAMNL OPEN | 23 | 4♥ | ♠6 | -2 | -2 |
| -1.0 | Round 8 | TEAMNL OPEN | 24 | 4♥ | ♣A | +1 | +0 |
| -1.4 | Round 3 | MAVERICKS | 14 | 4♥ | ♦A | = | -3 |
| -1.7 | Round 7 | HOBRA | 10 | 3♥ | ♥3 | +1 | -10 |
| -1.9 | Round 6 | ROSENBERG | 21 | 5♣ | ♠2 | -2 | -2 |
| -1.9 | Round 6 | ROSENBERG | 27 | 3NT | ♥3 | +1 | -10 |
| -2.1 | Round 7 | HOBRA | 12 | 3NT | ♥2 | = | +1 |
| -2.2 | Round 4 | ZIMMERMANN | 16 | 3NT | ♥6 | +2 | -1 |
| -2.3 | Round 4 | ZIMMERMANN | 28 | 4♠ | ♣7 | = | -1 |
| -2.4 | Round 4 | ZIMMERMANN | 21 | 3♣ | ♥2 | -2 | -5 |
| -2.5 | Round 6 | ROSENBERG | 18 | 4♥ | ♠3 | = | +11 |
| -2.7 | Round 8 | TEAMNL OPEN | 20 | 3NT | ♣T | +2 | +0 |
| -2.8 | Round 3 | MAVERICKS | 5 | 3NT | ♠3 | = | +1 |
| -2.8 | Round 3 | MAVERICKS | 13 | 2♥ | ♦7 | = | +0 |
| -3.1 | Round 6 | ROSENBERG | 25 | 2NT | ♥3 | -2 | -6 |
| -3.3 | Round 2 | SEOUL | 27 | 4♠ | ♥6 | -1 | -5 |
| -3.3 | Round 7 | HOBRA | 13 | 3♥ | ♣A | = | +0 |
| -3.4 | Round 2 | SEOUL | 18 | 1NT | ♦9 | -1 | -5 |
| -3.4 | Round 3 | MAVERICKS | 6 | 5♦ | ♠K | -2 | -5 |
| -3.4 | Round 3 | MAVERICKS | 12 | 4♠ | ♣K | -3 | -6 |
| -3.4 | Round 4 | ZIMMERMANN | 22 | 3NT | ♣8 | -2 | -3 |
| -3.6 | Round 7 | HOBRA | 9 | 3NT | ♣K | -2 | -7 |
| -3.8 | Round 3 | MAVERICKS | 7 | 2NT | ♦6 | -1 | -5 |
| -3.8 | Round 8 | TEAMNL OPEN | 15 | 3♠ | ♥5 | -1 | -4 |
| -4.5 | Round 2 | SEOUL | 26 | 4♥ | ♦J | -2 | -13 |
| -4.7 | Round 6 | ROSENBERG | 16 | 4♥ | ♠3 | +1 | +4 |
| -5.7 | Round 7 | HOBRA | 8 | 2♥x | ♠A | -2 | -5 |
| -6.0 | Round 4 | ZIMMERMANN | 17 | 6NT | ♥3 | -1 | -11 |
| -6.5 | Round 2 | SEOUL | 23 | 4♣ | ♥A | +2 | -14 |
| -6.5 | Round 8 | TEAMNL OPEN | 27 | 3NT | ♠2 | = | -3 |
| -7.5 | Round 4 | ZIMMERMANN | 24 | 4♠ | ♣6 | = | +0 |
| -10.0 | Round 2 | SEOUL | 22 | 4♥ | ♣3 | +3 | -14 |
| -11.2 | Round 7 | HOBRA | 4 | 3NTx | ♥J | = | -6 |
| -13.2 | Round 3 | MAVERICKS | 10 | 3♣x | ♠T | -4 | -11 |