CHENG Kuo-Paw · YBS
19rank
+36.4Butler · 84 bds
+0.43per board
±4.0swing
-0.10vs par /bd
-0.06adjusted /bd
by round
vs par split: bidding -0.29 · play +0.19
Strength of schedule: opponents averaged -0.49/bd (an easy draw) → opponent-adjusted -0.06/bd
Card play — on target: opening leads 75.0% · declarer play 77.8% · defence 97.5%
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 75.0% (4) | 75.0% (20) |
| Declarer play | 100.0% (6) | 66.7% (12) |
| Defence | 100.0% (4) | 97.2% (36) |
Opening leads by suit led: ♠ 66.7% (12) · ♥ 100.0% (4) · ♦ 80.0% (5) · ♣ 66.7% (3)
vs par by strain: NT -0.60 (20) · a suit +0.06 (64)
vs par by level: part-score +0.57 (35) · game -0.26 (46) · slam -5.33 (3)
By role: declaring +0.45/bd (-1.73 vs par · 44) · defending +0.42/bd (+1.70 vs par · 40)
By vulnerability: vulnerable +0.04/bd (-0.36 vs par · 42) · not vulnerable +0.82/bd (+0.17 vs par · 42)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round of 16 | C.Lin | J.Lusky – A.Falk | Closed | 14 | +13.0 | +0.93 | +1.07 |
| Round of 16 | C.Lin | D.Simson – J.Aker | Closed | 14 | +22.3 | +1.59 | -0.43 |
| Round of 16 | C.Lin | J.Lusky – A.Falk | Closed | 14 | +3.6 | +0.26 | +0.21 |
| Round of 16 | C.Lin | J.Aker – D.Simson | Closed | 14 | +6.1 | +0.44 | -0.64 |
| Quarterfinal | C.Lin | N.Silverman – B.Shenkin | Closed | 14 | -6.7 | -0.48 | -1.50 |
| Quarterfinal | C.Lin | N.Silverman – B.Shenkin | Closed | 14 | -1.9 | -0.14 | +0.71 |
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 |
|---|---|---|---|---|---|---|---|
| +8.3 | Round of 16 | SIMSON | 14 | 4♠ | ♥8 | +2 | +11 |
| +8.3 | Round of 16 | SIMSON | 44 | 5♥x | ♠Q | -1 | +11 |
| +8.3 | Quarterfinal | SILVERMAN | 16 | 4♠ | ♣10 | = | +10 |
| +8.0 | Round of 16 | SIMSON | 1 | 3NT | ♥9 | +2 | +8 |
| +7.4 | Round of 16 | SIMSON | 7 | 3NT | ♦6 | +2 | +1 |
| +6.9 | Round of 16 | SIMSON | 20 | 4♠ | ♥2 | = | +10 |
| +6.9 | Round of 16 | SIMSON | 23 | 5♥x | ♠K | -1 | +9 |
| +5.9 | Round of 16 | SIMSON | 55 | 3♥ | ♦J | = | +1 |
| +5.1 | Round of 16 | SIMSON | 48 | 3♣ | ♦A | = | +12 |
| +5.1 | Quarterfinal | SILVERMAN | 39 | 4♠x | ♥K | -1 | +5 |
| +4.9 | Quarterfinal | SILVERMAN | 32 | 3♦ | ♠7 | -2 | +7 |
| +4.6 | Round of 16 | SIMSON | 45 | 2♠ | ♠3 | -1 | +5 |
| +4.3 | Round of 16 | SIMSON | 3 | 2♥ | ♦5 | +3 | +6 |
| +4.1 | Quarterfinal | SILVERMAN | 17 | 3NT | ♥K | -3 | +6 |
| +4.0 | Round of 16 | SIMSON | 40 | 4♠ | ♥Q | +2 | +13 |
| +3.8 | Round of 16 | SIMSON | 17 | 3NT | ♠3 | +2 | +0 |
| +3.7 | Round of 16 | SIMSON | 18 | 4NT | ♦10 | +3 | +2 |
| +3.5 | Round of 16 | SIMSON | 35 | 3♦ | ♥A | -2 | +3 |
| +3.4 | Round of 16 | SIMSON | 53 | 2♠ | ♥4 | = | -1 |
| +3.1 | Quarterfinal | SILVERMAN | 21 | 5♦ | ♠K | = | +0 |
| +2.9 | Round of 16 | SIMSON | 25 | 6♦x | ♠A | -3 | +0 |
| +2.8 | Round of 16 | SIMSON | 29 | 1NT | ♠A | = | +5 |
| +2.7 | Round of 16 | SIMSON | 15 | 3NT | ♣5 | +2 | +0 |
| +2.7 | Round of 16 | SIMSON | 36 | 4♠ | ♣K | +1 | +4 |
| +2.7 | Round of 16 | SIMSON | 47 | 4♠ | ♦2 | = | +1 |
| +2.6 | Round of 16 | SIMSON | 39 | 2♦ | ♣10 | -3 | +2 |
| +2.4 | Quarterfinal | SILVERMAN | 18 | 4♥ | ♣8 | -1 | +5 |
| +1.9 | Round of 16 | SIMSON | 26 | 3NT | ♦Q | = | +2 |
| +1.7 | Quarterfinal | SILVERMAN | 20 | 2♥ | ♦Q | = | +1 |
| +1.7 | Quarterfinal | SILVERMAN | 30 | 4♠ | ♣J | -1 | -10 |
| +1.5 | Round of 16 | SIMSON | 13 | 1NT | ♥K | = | -1 |
| +1.3 | Round of 16 | SIMSON | 34 | 2♠ | ♦K | -1 | -2 |
| +1.2 | Round of 16 | SIMSON | 31 | 4♥ | ♠A | = | +0 |
| +1.1 | Round of 16 | SIMSON | 46 | 3NT | ♥3 | = | +0 |
| +1.1 | Quarterfinal | SILVERMAN | 29 | 5♥ | ♠A | = | +8 |
| +1.1 | Quarterfinal | SILVERMAN | 42 | 4♦ | ♠2 | -2 | +5 |
| +1.0 | Quarterfinal | SILVERMAN | 31 | 3♠ | ♥8 | -1 | -5 |
| +0.6 | Round of 16 | SIMSON | 10 | 3♦ | ♣2 | +1 | +0 |
| +0.6 | Quarterfinal | SILVERMAN | 40 | 2♠ | ♦K | = | +9 |
| +0.4 | Round of 16 | SIMSON | 21 | 4♥ | ♠9 | +1 | -10 |
| +0.4 | Round of 16 | SIMSON | 52 | 1NT | ♥J | = | -1 |
| +0.4 | Quarterfinal | SILVERMAN | 35 | 3♣ | ♦9 | = | +10 |
| +0.3 | Round of 16 | SIMSON | 50 | 4♥ | ♥3 | = | +0 |
| +0.2 | Round of 16 | SIMSON | 37 | 3♣ | ♥A | +1 | +0 |
| +0.2 | Round of 16 | SIMSON | 42 | 5♦ | ♣K | = | -1 |
| +0.1 | Round of 16 | SIMSON | 11 | 1NT | ♠2 | -1 | +2 |
| +0.1 | Round of 16 | SIMSON | 27 | 2♠ | ♣8 | -1 | -2 |
| -0.0 | Round of 16 | SIMSON | 56 | 6NT | ♥J | +1 | -11 |
| -0.0 | Quarterfinal | SILVERMAN | 37 | 4♠ | ♣10 | = | +0 |
| -0.3 | Round of 16 | SIMSON | 8 | 3♥ | ♣A | +1 | +4 |
| -0.3 | Round of 16 | SIMSON | 38 | 1NT | ♣A | +1 | +1 |
| -0.3 | Quarterfinal | SILVERMAN | 22 | 4♥ | ♠4 | +2 | -2 |
| -0.3 | Quarterfinal | SILVERMAN | 26 | 3NT | ♣J | +1 | +0 |
| -0.5 | Round of 16 | SIMSON | 4 | 2♠ | ♦Q | = | -10 |
| -0.5 | Round of 16 | SIMSON | 24 | 1NT | ♠J | +1 | +0 |
| -0.6 | Round of 16 | SIMSON | 32 | 3♥ | ♠9 | -2 | +2 |
| -0.6 | Round of 16 | SIMSON | 33 | 2♦ | ♠9 | +1 | -1 |
| -0.6 | Quarterfinal | SILVERMAN | 24 | 3♣ | ♥J | +1 | -7 |
| -0.6 | Quarterfinal | SILVERMAN | 27 | 3NT | ♠7 | +1 | +1 |
| -1.0 | Round of 16 | SIMSON | 5 | 3♠ | ♥4 | +1 | +10 |
| -1.0 | Quarterfinal | SILVERMAN | 28 | 4♥ | ♠J | +2 | -1 |
| -1.1 | Round of 16 | SIMSON | 22 | 4♥ | ♣10 | = | +1 |
| -1.1 | Quarterfinal | SILVERMAN | 34 | 2♥ | ♠7 | = | -5 |
| -1.2 | Round of 16 | SIMSON | 28 | 3NT | ♦9 | -1 | -10 |
| -1.7 | Round of 16 | SIMSON | 16 | 4♠ | ♦8 | -1 | -6 |
| -1.7 | Round of 16 | SIMSON | 43 | 4♥ | ♣3 | -1 | -7 |
| -2.0 | Quarterfinal | SILVERMAN | 33 | 5♦ | ♠Q | -2 | +7 |
| -2.5 | Round of 16 | SIMSON | 19 | 2♠ | ♥Q | -2 | -2 |
| -2.9 | Round of 16 | SIMSON | 2 | 4♥ | ♦3 | +3 | -10 |
| -3.3 | Round of 16 | SIMSON | 12 | 1NT | ♥7 | +3 | -6 |
| -3.4 | Quarterfinal | SILVERMAN | 25 | 2♠ | ♣K | -2 | -3 |
| -4.0 | Round of 16 | SIMSON | 49 | 4♠ | ♠J | -1 | -6 |
| -4.4 | Quarterfinal | SILVERMAN | 15 | 2♥ | ♣K | +1 | -7 |
| -4.4 | Quarterfinal | SILVERMAN | 38 | 4♠ | ♥J | -1 | -6 |
| -4.5 | Round of 16 | SIMSON | 9 | 4♠ | ♥K | +1 | +0 |
| -4.7 | Round of 16 | SIMSON | 6 | 4♥ | ♦K | = | +0 |
| -4.9 | Quarterfinal | SILVERMAN | 41 | 4♠ | ♥J | = | -10 |
| -5.4 | Quarterfinal | SILVERMAN | 36 | 6♣x | ♠A | -1 | -5 |
| -6.3 | Quarterfinal | SILVERMAN | 19 | 4♥ | ♠7 | = | -11 |
| -6.5 | Round of 16 | SIMSON | 30 | 3NTx | ♦3 | -1 | -11 |
| -6.9 | Round of 16 | SIMSON | 41 | 3♥ | ♣2 | -1 | -12 |
| -8.0 | Round of 16 | SIMSON | 54 | 5♣ | ♦Q | = | +0 |
| -9.4 | Quarterfinal | SILVERMAN | 23 | 4♠ | ♥J | -1 | -13 |
| -12.0 | Round of 16 | SIMSON | 51 | 4♥ | ♠A | = | -13 |