CHENG Aaron Shiu Cheong · CHINA HONG KONG
670rank
-68.2Butler · 100 bds
-0.68per board
±4.8swing
-0.47vs par /bd · #527/695
-0.49adjusted /bd
by round
vs par split: bidding -0.15 · play -0.32
Strength of schedule: opponents averaged +0.19/bd (a tough draw) → opponent-adjusted -0.49/bd
Card play — on target: opening leads 68.8% #645 of 694 · declarer play 82.8% #109 of 694 · defence 70.6% #679 of 695
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 80.0% (10) | 63.6% (22) |
| Declarer play | 66.7% (3) | 84.6% (26) |
| Defence | 60.0% (15) | 75.0% (36) |
Opening leads by suit led: ♠ 87.5% (8) · ♥ 42.9% (7) · ♦ 62.5% (8) · ♣ 77.8% (9)
vs par by strain: NT -2.17 (23) · a suit +0.04 (77)
vs par by level: part-score -0.22 (37) · game -0.17 (59) · slam -7.25 (4)
By role: declaring -0.31/bd (-1.41 vs par · 49) · defending -1.04/bd (+0.43 vs par · 51)
By vulnerability: vulnerable -0.27/bd (-0.18 vs par · 50) · not vulnerable -1.09/bd (-0.76 vs par · 50)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | V.Li | N.Visser – R.Bierens | Open | 10 | -4.1 | -0.41 | +0.20 |
| Round 3 | V.Li | F.Cedolin – F.Caviezel | Closed | 10 | -25.4 | -2.54 | -2.40 |
| Round 4 | V.Li | Y.Lu – L.Gu | Open | 10 | -16.8 | -1.68 | -0.30 |
| Round 5 | V.Li | D.Ueland – S.Hoyland | Open | 10 | -10.5 | -1.05 | -0.70 |
| Round 6 | V.Li | Y.Zhang – Y.Wu | Closed | 10 | +18.6 | +1.86 | +2.00 |
| Round 8 | V.Li | B.Marina – I.Coldea | Closed | 10 | -12.5 | -1.25 | +0.90 |
| Round 10 | V.Li | D.Price – C.Simpson | Closed | 10 | +3.3 | +0.33 | -0.10 |
| Round 11 | V.Li | N.Fitzgibbon – A.Mesbur | Open | 10 | -5.6 | -0.56 | -3.90 |
| Round 13 | V.Li | K.Vrieze – A.Van Munnen | Open | 10 | -8.5 | -0.85 | -0.40 |
| Round 15 | R.Ling | A.Gursel – E.Aksuyek | Open | 10 | -6.7 | -0.67 | +0.00 |
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 |
|---|---|---|---|---|---|---|---|
| +12.5 | Round 15 | BILAL | 28 | 4♥x | ♥3 | -6 | +12 |
| +9.4 | Round 6 | PAN CHINA | 29 | 4♠ | ♣3 | -1 | +13 |
| +7.5 | Round 13 | VM 1 | 6 | 4♠x | ♣A | -2 | +2 |
| +7.4 | Round 3 | ITALY SENIOR | 26 | 4♥ | ♦10 | = | +10 |
| +7.3 | Round 8 | ROM COLDEA | 12 | 4♠ | ♥A | = | +10 |
| +7.0 | Round 6 | PAN CHINA | 21 | 3NT | ♦7 | -2 | +6 |
| +6.7 | Round 10 | MOSSOP | 6 | 2♦x | ♣10 | -3 | +9 |
| +6.5 | Round 13 | VM 1 | 10 | 5♦x | ♥Q | -1 | +13 |
| +6.1 | Round 10 | MOSSOP | 5 | 4♥ | ♠A | = | +8 |
| +5.8 | Round 5 | HARDING | 19 | 5♣ | ♠A | = | +0 |
| +5.7 | Round 4 | CHINA LADIES | 3 | 4♥ | ♦A | = | +6 |
| +5.6 | Round 13 | VM 1 | 4 | 1♥ | ♦9 | -2 | +8 |
| +5.4 | Round 11 | HANLON | 11 | 6NT | ♥5 | = | +0 |
| +4.3 | Round 8 | ROM COLDEA | 16 | 3NT | ♠10 | -2 | +12 |
| +4.2 | Round 11 | HANLON | 14 | 3NT | ♥9 | +1 | +0 |
| +3.9 | Round 10 | MOSSOP | 9 | 3NT | ♠Q | -2 | +8 |
| +3.6 | Round 5 | HARDING | 17 | 3♦ | ♦2 | -2 | +5 |
| +3.3 | Round 11 | HANLON | 18 | 4♠ | ♣K | = | +3 |
| +3.2 | Round 3 | ITALY SENIOR | 28 | 5♥ | ♦10 | -2 | +6 |
| +3.1 | Round 6 | PAN CHINA | 26 | 2♠ | ♥5 | = | +6 |
| +2.8 | Round 4 | CHINA LADIES | 9 | 4♥ | ♦A | -1 | +6 |
| +2.5 | Round 6 | PAN CHINA | 22 | 3♠ | ♥3 | = | -7 |
| +2.4 | Round 5 | HARDING | 13 | 4♠ | ♣5 | +3 | +12 |
| +2.3 | Round 8 | ROM COLDEA | 13 | 4♥ | ♦5 | +1 | +4 |
| +2.1 | Round 1 | PHILHARMONIE | 7 | 3NT | ♦5 | = | +0 |
| +2.1 | Round 6 | PAN CHINA | 27 | 3♠ | ♣3 | -1 | +8 |
| +1.8 | Round 1 | PHILHARMONIE | 9 | 2♠ | ♦2 | -1 | +5 |
| +1.7 | Round 6 | PAN CHINA | 23 | 4♥ | ♥5 | +1 | +0 |
| +1.6 | Round 1 | PHILHARMONIE | 1 | 5♦ | ♣A | -2 | +5 |
| +1.4 | Round 5 | HARDING | 18 | 2♥ | ♦6 | -1 | -2 |
| +1.3 | Round 1 | PHILHARMONIE | 5 | 3♥ | ♦A | -1 | +0 |
| +1.0 | Round 11 | HANLON | 19 | 3NT | ♥3 | +2 | -11 |
| +0.9 | Round 6 | PAN CHINA | 24 | 2♥x | ♠Q | -2 | -3 |
| +0.7 | Round 3 | ITALY SENIOR | 30 | 4♦ | ♣J | -1 | -2 |
| +0.7 | Round 4 | CHINA LADIES | 7 | 2♠ | ♥A | = | +0 |
| +0.7 | Round 10 | MOSSOP | 1 | 3NT | ♥4 | +2 | +0 |
| +0.6 | Round 10 | MOSSOP | 7 | 2♥ | ♦A | +2 | +1 |
| +0.5 | Round 8 | ROM COLDEA | 15 | 4♠ | ♠4 | +1 | +0 |
| +0.3 | Round 13 | VM 1 | 1 | 3NT | ♦2 | +1 | -1 |
| +0.2 | Round 3 | ITALY SENIOR | 27 | 1NT | ♥9 | +1 | +1 |
| +0.2 | Round 15 | BILAL | 26 | 4♠ | ♣J | = | +0 |
| +0.1 | Round 5 | HARDING | 16 | 5♥ | ♠6 | +1 | +1 |
| +0.1 | Round 15 | BILAL | 22 | 4♠ | ♥2 | = | +0 |
| +0.0 | Round 5 | HARDING | 12 | 4♥ | ♦4 | +1 | +0 |
| -0.2 | Round 4 | CHINA LADIES | 5 | 4♥x | ♣A | -1 | +5 |
| -0.2 | Round 10 | MOSSOP | 8 | 2♠ | ♥2 | +1 | -6 |
| -0.3 | Round 1 | PHILHARMONIE | 10 | 3♠ | ♣2 | +1 | +1 |
| -0.3 | Round 3 | ITALY SENIOR | 29 | 2♠ | ♣K | -1 | +1 |
| -0.3 | Round 6 | PAN CHINA | 30 | 2♦ | ♠7 | = | +1 |
| -0.4 | Round 4 | CHINA LADIES | 4 | 4♥ | ♦J | +1 | -1 |
| -0.4 | Round 11 | HANLON | 15 | 4♥ | ♠Q | = | +0 |
| -0.4 | Round 13 | VM 1 | 5 | 3NT | ♣4 | = | +1 |
| -1.0 | Round 4 | CHINA LADIES | 2 | 4♣ | ♥2 | -2 | +6 |
| -1.0 | Round 11 | HANLON | 20 | 4♠ | ♣3 | +2 | -12 |
| -1.0 | Round 15 | BILAL | 24 | 4♠ | ♣A | +1 | +0 |
| -1.0 | Round 15 | BILAL | 29 | 5♠ | ♥5 | = | +0 |
| -1.1 | Round 13 | VM 1 | 8 | 2♦ | ♠8 | +1 | -7 |
| -1.3 | Round 1 | PHILHARMONIE | 4 | 5♠ | ♣2 | = | -13 |
| -1.3 | Round 15 | BILAL | 21 | 5♣x | ♠K | -3 | -4 |
| -1.4 | Round 1 | PHILHARMONIE | 6 | 3♣ | ♠A | +2 | +10 |
| -1.4 | Round 11 | HANLON | 13 | 4♥ | ♦5 | = | +1 |
| -1.6 | Round 13 | VM 1 | 2 | 3♣ | ♠6 | -2 | -9 |
| -1.7 | Round 5 | HARDING | 11 | 3NT | ♥2 | +3 | -2 |
| -1.8 | Round 10 | MOSSOP | 10 | 2♦x | ♥5 | -1 | -2 |
| -2.0 | Round 3 | ITALY SENIOR | 22 | 2♥ | ♦5 | -2 | +0 |
| -2.0 | Round 15 | BILAL | 30 | 3NT | ♠9 | +1 | +1 |
| -2.1 | Round 1 | PHILHARMONIE | 8 | 3♠ | ♥A | -2 | +1 |
| -2.1 | Round 8 | ROM COLDEA | 18 | 5♥x | ♣A | -3 | -4 |
| -2.2 | Round 8 | ROM COLDEA | 19 | 3♦ | ♣5 | -1 | +2 |
| -2.2 | Round 15 | BILAL | 23 | 5♣ | ♣10 | -1 | -6 |
| -2.3 | Round 4 | CHINA LADIES | 8 | 3♠ | ♠2 | -1 | -4 |
| -2.4 | Round 13 | VM 1 | 7 | 2♠ | ♠2 | +1 | +0 |
| -2.6 | Round 1 | PHILHARMONIE | 3 | 3NT | ♠10 | = | +0 |
| -2.7 | Round 5 | HARDING | 14 | 2NT | ♥10 | +1 | -1 |
| -2.8 | Round 8 | ROM COLDEA | 17 | 2♥ | ♠K | = | +0 |
| -3.1 | Round 3 | ITALY SENIOR | 24 | 2♠ | ♥7 | = | -5 |
| -3.2 | Round 1 | PHILHARMONIE | 2 | 2♥ | ♣J | +1 | -7 |
| -3.2 | Round 6 | PAN CHINA | 25 | 3♠ | ♦6 | -3 | -2 |
| -3.3 | Round 10 | MOSSOP | 3 | 2♥ | ♣3 | -2 | -5 |
| -3.4 | Round 4 | CHINA LADIES | 1 | 4♥x | ♥Q | -1 | +0 |
| -3.8 | Round 15 | BILAL | 27 | 4♠ | ♥J | +3 | -2 |
| -4.1 | Round 11 | HANLON | 16 | 3NT | ♠3 | -3 | -12 |
| -4.5 | Round 8 | ROM COLDEA | 20 | 4♥ | ♣10 | +1 | -1 |
| -4.6 | Round 6 | PAN CHINA | 28 | 3♠ | ♠3 | +1 | -2 |
| -4.6 | Round 10 | MOSSOP | 4 | 3♠x | ♣A | -1 | -2 |
| -4.8 | Round 10 | MOSSOP | 2 | 4♠ | ♦10 | -1 | -12 |
| -5.0 | Round 11 | HANLON | 12 | 3NT | ♥K | = | +0 |
| -5.4 | Round 4 | CHINA LADIES | 6 | 5♥x | ♦J | -4 | -4 |
| -7.5 | Round 8 | ROM COLDEA | 11 | 3NT | ♥3 | +1 | -7 |
| -7.6 | Round 11 | HANLON | 17 | 4♥ | ♣10 | = | -8 |
| -7.8 | Round 8 | ROM COLDEA | 14 | 3NT | ♦4 | = | -7 |
| -8.2 | Round 15 | BILAL | 25 | 4♠ | ♥J | = | -1 |
| -9.0 | Round 5 | HARDING | 15 | 4♥ | ♣J | +2 | -13 |
| -9.2 | Round 3 | ITALY SENIOR | 23 | 3NT | ♦4 | = | -10 |
| -9.9 | Round 13 | VM 1 | 3 | 3NT | ♠7 | = | -11 |
| -10.4 | Round 5 | HARDING | 20 | 3♦x | ♠2 | +1 | -7 |
| -10.5 | Round 3 | ITALY SENIOR | 21 | 6♣ | ♥10 | -1 | -12 |
| -11.8 | Round 3 | ITALY SENIOR | 25 | 4♠ | ♦Q | = | -13 |
| -13.0 | Round 13 | VM 1 | 9 | 6NT | ♠9 | = | +0 |
| -13.3 | Round 4 | CHINA LADIES | 10 | 7NT | ♠10 | -1 | -17 |