CHEN Yichao · WOLFSON
vs par split: bidding +1.37 · play -0.02
Strength of schedule: opponents averaged -0.02/bd (an average draw) → opponent-adjusted +0.62/bd
Card play — on target: opening leads 75.0% #131 of 196 · declarer play 71.4% #150 of 196 · defence 87.2% #92 of 196
Bidding activity — not a pass: 39.7% #160 of 196 (106/267)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 85.7% (7) | 69.2% (13) |
| Declarer play | 40.0% (5) | 81.2% (16) |
| Defence | 84.6% (13) | 88.5% (26) |
Opening leads by suit led: ♠ 75.0% (4) · ♥ 66.7% (3) · ♦ 77.8% (9) · ♣ 75.0% (4)
vs par by strain: NT -0.21 (24) · a suit +1.97 (60)
vs par by level: part-score +1.63 (27) · game +0.88 (43) · slam +2.21 (14)
By role: declaring +1.02/bd (-0.27 vs par · 45) · defending +0.21/bd (+3.21 vs par · 39)
By vulnerability: vulnerable +0.44/bd (+1.31 vs par · 42) · not vulnerable +0.85/bd (+1.38 vs par · 42)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 2 | Y.Liu | B.Krawczyk – F.Kurlit | Closed | 14 | +17.2 | +1.23 | +2.29 |
| Round 3 | Y.Liu | N.Hammelev – A.Alruwayeh | Open | 14 | +4.7 | +0.34 | +0.93 |
| Round 4 | Y.Liu | J.Wooldridge – D.Grainger | Closed | 14 | +1.4 | +0.10 | +0.50 |
| Round 6 | Y.Liu | C.Ju – Z.Shi | Closed | 14 | +13.0 | +0.93 | +0.50 |
| Round 7 | Y.Liu | I.Chalupec – B.Chmurski | Open | 14 | +14.9 | +1.06 | +1.71 |
| Round 8 | Y.Liu | J.Kranyak – V.Demuy | Closed | 14 | +3.1 | +0.22 | +2.14 |
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 |
|---|---|---|---|---|---|---|---|
| +11.8 | Round 8 | SILVER SURFERS | 18 | 6♣ | ♥2 | = | +0 |
| +9.3 | Round 2 | EMI | 27 | 3NTx | ♥7 | -3 | +9 |
| +8.6 | Round 3 | TEAM PHOENIX | 7 | 4♠ | ♣2 | -4 | +17 |
| +8.5 | Round 2 | EMI | 18 | 6♣ | ♠7 | = | +0 |
| +8.1 | Round 4 | SIMSON | 26 | 6♥x | ♣T | -2 | +12 |
| +8.0 | Round 6 | CHINA OPEN TEAM 1 | 22 | 3NT | ♠8 | +1 | +10 |
| +7.6 | Round 3 | TEAM PHOENIX | 12 | 6♥ | ♠K | +1 | +1 |
| +7.2 | Round 4 | SIMSON | 28 | 4♠ | ♥2 | = | +7 |
| +6.6 | Round 4 | SIMSON | 22 | 3NT | ♥2 | -1 | +10 |
| +6.1 | Round 2 | EMI | 25 | 6♥ | ♠A | = | +12 |
| +5.9 | Round 6 | CHINA OPEN TEAM 1 | 26 | 4♠ | ♥5 | = | +0 |
| +5.9 | Round 7 | SV BRIDGE CLUB | 13 | 4♥ | ♣T | = | +0 |
| +5.7 | Round 2 | EMI | 24 | 4♠x | ♦2 | +1 | +6 |
| +5.6 | Round 3 | TEAM PHOENIX | 2 | 4♥x | ♣A | -1 | +2 |
| +5.6 | Round 7 | SV BRIDGE CLUB | 3 | 3NT | ♥8 | -1 | +8 |
| +5.3 | Round 6 | CHINA OPEN TEAM 1 | 18 | 1NT | ♥3 | +3 | +9 |
| +5.2 | Round 2 | EMI | 19 | 6♦ | ♥2 | -1 | +11 |
| +5.0 | Round 6 | CHINA OPEN TEAM 1 | 20 | 5♦ | ♣K | = | +0 |
| +4.6 | Round 4 | SIMSON | 21 | 1NT | ♠2 | -3 | -3 |
| +4.5 | Round 3 | TEAM PHOENIX | 8 | 2♥ | ♠J | = | +5 |
| +3.9 | Round 7 | SV BRIDGE CLUB | 11 | 3♥ | ♦2 | = | +6 |
| +3.9 | Round 8 | SILVER SURFERS | 25 | 3NT | ♦6 | -1 | +0 |
| +3.8 | Round 7 | SV BRIDGE CLUB | 6 | 3♣ | ♣3 | = | +0 |
| +3.6 | Round 7 | SV BRIDGE CLUB | 8 | 5♦x | ♥2 | -1 | +5 |
| +3.5 | Round 7 | SV BRIDGE CLUB | 4 | 3♥x | ♦A | -1 | +9 |
| +3.2 | Round 2 | EMI | 21 | 5♣ | ♦A | -1 | +6 |
| +3.0 | Round 3 | TEAM PHOENIX | 5 | 4♥ | ♠K | = | +0 |
| +2.8 | Round 6 | CHINA OPEN TEAM 1 | 25 | 2♠ | ♦9 | -1 | +5 |
| +2.3 | Round 6 | CHINA OPEN TEAM 1 | 15 | 4♠x | ♥A | -1 | +1 |
| +2.2 | Round 8 | SILVER SURFERS | 24 | 1NT | ♠4 | +2 | +2 |
| +2.0 | Round 7 | SV BRIDGE CLUB | 5 | 4♥ | ♠A | = | +1 |
| +2.0 | Round 8 | SILVER SURFERS | 28 | 3NT | ♦2 | -1 | +5 |
| +1.4 | Round 4 | SIMSON | 15 | 2♥ | ♣Q | = | +5 |
| +1.4 | Round 4 | SIMSON | 17 | 3♦ | ♠9 | -1 | +2 |
| +1.4 | Round 8 | SILVER SURFERS | 22 | 2♠ | ♥3 | -1 | +2 |
| +1.2 | Round 2 | EMI | 16 | 5♠x | ♥K | -1 | +6 |
| +1.1 | Round 6 | CHINA OPEN TEAM 1 | 23 | 3NT | ♣9 | = | +0 |
| +1.0 | Round 3 | TEAM PHOENIX | 9 | 4♠ | ♣A | -3 | +1 |
| +0.8 | Round 6 | CHINA OPEN TEAM 1 | 27 | 4♦ | ♠T | = | +0 |
| +0.7 | Round 4 | SIMSON | 23 | 6♠ | ♦2 | +1 | +1 |
| +0.5 | Round 7 | SV BRIDGE CLUB | 12 | 4♠ | ♣J | +1 | +1 |
| +0.4 | Round 2 | EMI | 15 | 4♣ | ♦9 | +1 | +10 |
| +0.3 | Round 4 | SIMSON | 18 | 3♣ | ♠2 | -2 | +2 |
| +0.3 | Round 7 | SV BRIDGE CLUB | 14 | 4♠ | ♦K | +2 | +11 |
| +0.2 | Round 3 | TEAM PHOENIX | 3 | 2♥ | ♦T | +2 | -2 |
| +0.2 | Round 3 | TEAM PHOENIX | 4 | 2♣ | ♣7 | = | +1 |
| +0.2 | Round 4 | SIMSON | 19 | 3♣ | ♦2 | = | +7 |
| +0.2 | Round 6 | CHINA OPEN TEAM 1 | 17 | 4♠ | ♦K | = | -1 |
| -0.0 | Round 8 | SILVER SURFERS | 23 | 2♥ | ♥A | +1 | +0 |
| -0.1 | Round 2 | EMI | 23 | 3♥ | ♦A | -1 | -1 |
| -0.3 | Round 3 | TEAM PHOENIX | 13 | 3NT | ♦8 | = | +1 |
| -0.5 | Round 7 | SV BRIDGE CLUB | 7 | 3NT | ♦2 | +1 | +0 |
| -0.6 | Round 8 | SILVER SURFERS | 16 | 3NT | ♦4 | = | -1 |
| -0.9 | Round 7 | SV BRIDGE CLUB | 10 | 3♣ | ♥T | -1 | +0 |
| -0.9 | Round 8 | SILVER SURFERS | 27 | 4♠ | ♥Q | +3 | +10 |
| -1.0 | Round 6 | CHINA OPEN TEAM 1 | 28 | 2♠ | ♥4 | +1 | +10 |
| -1.2 | Round 2 | EMI | 17 | 4♠ | ♥6 | -1 | -4 |
| -1.2 | Round 3 | TEAM PHOENIX | 11 | 3♠ | ♣T | -1 | -4 |
| -1.5 | Round 8 | SILVER SURFERS | 20 | 1NT | ♠J | +1 | +0 |
| -1.7 | Round 3 | TEAM PHOENIX | 14 | 3NT | ♥Q | = | -2 |
| -1.8 | Round 4 | SIMSON | 24 | 4♥ | ♦J | +2 | -1 |
| -2.0 | Round 2 | EMI | 22 | 3NT | ♣2 | = | -7 |
| -2.1 | Round 8 | SILVER SURFERS | 26 | 4♥ | ♣7 | = | +0 |
| -2.2 | Round 7 | SV BRIDGE CLUB | 9 | 4♠ | ♦Q | +1 | -1 |
| -2.3 | Round 3 | TEAM PHOENIX | 6 | 3NT | ♠K | +1 | +0 |
| -2.3 | Round 8 | SILVER SURFERS | 19 | 6♦ | ♣A | = | +1 |
| -2.4 | Round 7 | SV BRIDGE CLUB | 1 | 3NT | ♠A | -3 | -2 |
| -2.6 | Round 8 | SILVER SURFERS | 21 | 7♥ | ♣5 | = | +0 |
| -2.7 | Round 6 | CHINA OPEN TEAM 1 | 19 | 2NT | ♣7 | +1 | +0 |
| -3.4 | Round 4 | SIMSON | 27 | 6♣ | ♠2 | +1 | -1 |
| -4.0 | Round 8 | SILVER SURFERS | 17 | 6♠ | ♥6 | = | +11 |
| -4.1 | Round 2 | EMI | 26 | 3NT | ♠J | = | -10 |
| -4.1 | Round 6 | CHINA OPEN TEAM 1 | 16 | 3NT | ♠J | -1 | -6 |
| -4.2 | Round 8 | SILVER SURFERS | 15 | 6♥ | ♠4 | = | +0 |
| -5.3 | Round 6 | CHINA OPEN TEAM 1 | 21 | 3♠ | ♥A | -1 | -10 |
| -5.3 | Round 6 | CHINA OPEN TEAM 1 | 24 | 2NT | ♥2 | -2 | -11 |
| -5.6 | Round 4 | SIMSON | 16 | 3NT | ♥2 | -2 | -7 |
| -6.7 | Round 3 | TEAM PHOENIX | 1 | 5♦ | ♣6 | -3 | -7 |
| -7.4 | Round 2 | EMI | 28 | 5♣ | ♦J | -1 | -6 |
| -7.6 | Round 2 | EMI | 20 | 2♠ | ♥T | = | +0 |
| -8.2 | Round 7 | SV BRIDGE CLUB | 2 | 4♥ | ♣K | +3 | -14 |
| -9.1 | Round 4 | SIMSON | 25 | 6♠ | ♦2 | -1 | -17 |
| -9.2 | Round 4 | SIMSON | 20 | 3NT | ♠3 | -3 | -10 |
| -13.8 | Round 3 | TEAM PHOENIX | 10 | 7♠ | ♣K | = | +0 |