CHEN Dawei · YEH MIX
vs par split: bidding +1.53 · play +0.29
Strength of schedule: opponents averaged +0.41/bd (a tough draw) → opponent-adjusted +1.64/bd
Card play — on target: opening leads 71.4% #200 of 277 · declarer play 72.7% #153 of 277 · defence 92.6% #37 of 277
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 50.0% (2) | 75.0% (12) |
| Declarer play | 100.0% (4) | 57.1% (7) |
| Defence | 75.0% (4) | 95.7% (23) |
Opening leads by suit led: ♠ 33.3% (3) · ♥ 66.7% (3) · ♦ 75.0% (4) · ♣ 100.0% (4)
vs par by strain: NT +3.91 (11) · a suit +1.21 (38)
vs par by level: part-score +2.38 (24) · game +0.91 (23) · slam +5.50 (2)
By role: declaring +1.61/bd (-0.27 vs par · 22) · defending +0.92/bd (+3.52 vs par · 27)
By vulnerability: vulnerable +1.00/bd (+2.17 vs par · 24) · not vulnerable +1.44/bd (+1.48 vs par · 25)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 2 | M.Sun | D.Cao – J.Gao | Open | 7 | +14.8 | +2.11 | +4.29 |
| Round 3 | M.Sun | Y.Wang – J.Liu | Closed | 7 | -6.4 | -0.91 | +0.00 |
| Round 4 | Y.Zhang | R.Tobing – T.Asbi | Open | 7 | +15.8 | +2.26 | +0.86 |
| Round 5 | Y.Zhang | L.Zhang – S.Shen | Closed | 7 | -4.4 | -0.63 | +0.86 |
| Round 6 | Y.Zhang | B.Wang – J.Li | Open | 7 | +21.8 | +3.11 | +2.71 |
| Round 7 | Y.Zhang | S.Datta – K.Nandi | Open | 7 | -5.8 | -0.83 | +0.14 |
| Round 8 | Y.Zhang | R.Chen – J.Ho | Closed | 7 | +24.4 | +3.49 | +3.86 |
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 |
|---|---|---|---|---|---|---|---|
| +12.4 | Round 8 | GENTLE | 28 | 5♠x | ♣7 | -1 | +12 |
| +10.8 | Round 6 | GSRC & P UNITED | 13 | 4♠ | ♦Q | = | +11 |
| +7.9 | Round 8 | GENTLE | 24 | 3NT | ♣9 | +1 | +7 |
| +7.7 | Round 6 | GSRC & P UNITED | 12 | 3♥ | ♠8 | +2 | +10 |
| +7.5 | Round 4 | PERTAMINA EP | 23 | 3NT | ♦8 | = | +10 |
| +6.2 | Round 6 | GSRC & P UNITED | 14 | 4♠ | ♠4 | = | +7 |
| +6.0 | Round 2 | SUZHOUTAIHU | 13 | 4♠ | ♥3 | +3 | +17 |
| +5.7 | Round 4 | PERTAMINA EP | 22 | 3NT | ♦2 | = | +0 |
| +5.4 | Round 8 | GENTLE | 26 | 3♦ | ♥3 | +2 | +10 |
| +4.6 | Round 8 | GENTLE | 25 | 2♣ | ♣5 | = | +6 |
| +4.4 | Round 7 | HEMANT JALAN | 18 | 5♦ | ♥2 | +1 | +13 |
| +4.2 | Round 2 | SUZHOUTAIHU | 12 | 3♦ | ♣2 | +2 | +6 |
| +4.0 | Round 3 | TIANJIN COM-JADEITE | 18 | 3♠ | ♣A | = | +1 |
| +3.5 | Round 7 | HEMANT JALAN | 15 | 4♠ | ♥3 | -1 | +12 |
| +3.2 | Round 5 | REDBULL | 4 | 4♠ | ♣9 | -1 | +6 |
| +3.2 | Round 6 | GSRC & P UNITED | 8 | 3♦ | ♠A | +1 | +1 |
| +3.1 | Round 2 | SUZHOUTAIHU | 8 | 1NT | ♠2 | -1 | +5 |
| +2.8 | Round 4 | PERTAMINA EP | 28 | 4♦ | ♠4 | = | +9 |
| +2.5 | Round 6 | GSRC & P UNITED | 11 | 1NT | ♥2 | +1 | +1 |
| +2.3 | Round 2 | SUZHOUTAIHU | 14 | 3♠ | ♦J | -1 | +4 |
| +1.8 | Round 5 | REDBULL | 3 | 3NT | ♥10 | = | +0 |
| +1.6 | Round 7 | HEMANT JALAN | 20 | 3♥ | ♠3 | -1 | +0 |
| +1.4 | Round 8 | GENTLE | 23 | 3♣ | ♠K | = | +0 |
| +0.7 | Round 3 | TIANJIN COM-JADEITE | 21 | 4♣ | ♥4 | +1 | +10 |
| +0.6 | Round 3 | TIANJIN COM-JADEITE | 15 | 4♥ | ♠10 | +2 | -11 |
| +0.5 | Round 3 | TIANJIN COM-JADEITE | 16 | 1NT | ♠4 | = | +8 |
| +0.4 | Round 4 | PERTAMINA EP | 24 | 2♦ | ♣2 | -1 | -2 |
| +0.4 | Round 4 | PERTAMINA EP | 27 | 4♠ | ♥4 | +1 | -11 |
| +0.2 | Round 2 | SUZHOUTAIHU | 9 | 2♠ | ♥4 | = | -1 |
| +0.2 | Round 2 | SUZHOUTAIHU | 11 | 3♠ | ♦2 | = | -1 |
| +0.2 | Round 5 | REDBULL | 2 | 3♣ | ♥K | = | -1 |
| +0.1 | Round 7 | HEMANT JALAN | 16 | 5♥x | ♠Q | -1 | +0 |
| -0.2 | Round 4 | PERTAMINA EP | 25 | 3NT | ♠Q | = | +0 |
| -0.2 | Round 7 | HEMANT JALAN | 19 | 1♥ | ♠3 | -1 | -2 |
| -0.6 | Round 5 | REDBULL | 1 | 4♥ | ♥3 | +1 | +0 |
| -0.7 | Round 5 | REDBULL | 6 | 6NT | ♣5 | = | +11 |
| -0.8 | Round 4 | PERTAMINA EP | 26 | 1NT | ♠7 | +1 | +0 |
| -1.1 | Round 7 | HEMANT JALAN | 17 | 4♥ | ♦7 | -2 | -7 |
| -1.2 | Round 2 | SUZHOUTAIHU | 10 | 3♠x | ♣A | -2 | +0 |
| -1.6 | Round 3 | TIANJIN COM-JADEITE | 19 | 4♠ | ♦K | = | -6 |
| -1.7 | Round 6 | GSRC & P UNITED | 10 | 4♦ | ♥A | = | +0 |
| -2.3 | Round 3 | TIANJIN COM-JADEITE | 20 | 1NT | ♥Q | +2 | +1 |
| -2.9 | Round 8 | GENTLE | 27 | 4♠ | ♥2 | = | +0 |
| -3.6 | Round 5 | REDBULL | 5 | 4♠ | ♥A | -1 | -10 |
| -4.4 | Round 8 | GENTLE | 22 | 3♠ | ♥Q | -2 | -8 |
| -4.7 | Round 5 | REDBULL | 7 | 6♥ | ♠A | = | +0 |
| -6.9 | Round 6 | GSRC & P UNITED | 9 | 5♣ | ♥5 | = | -11 |
| -8.3 | Round 3 | TIANJIN COM-JADEITE | 17 | 4♠ | ♦J | = | -3 |
| -14.1 | Round 7 | HEMANT JALAN | 21 | 5♣ | ♠3 | -3 | -15 |