🇺🇸 HUANG Yongkang (Jeffrey) · USA2
84rank
-32.4Butler · 87 bds
-0.37per board
±4.8swing
-0.06vs par /bd · #44/111
-0.56adjusted /bd
by round
vs par split: bidding +0.22 · play -0.28
Strength of schedule: opponents averaged -0.19/bd (an easy draw) → opponent-adjusted -0.56/bd
Card play — on target: opening leads 76.0% #86 of 111 · declarer play 82.4% #24 of 111 · defence 88.6% #29 of 111
Bidding activity — not a pass: 42.5% #62 of 111 (102/240)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 62.5% (8) | 82.4% (17) |
| Declarer play | 100.0% (3) | 78.6% (14) |
| Defence | 84.6% (13) | 90.3% (31) |
Opening leads by suit led: ♠ 75.0% (4) · ♥ 77.8% (9) · ♦ 83.3% (6) · ♣ 66.7% (6)
vs par by strain: NT +2.57 (21) · a suit -0.89 (66)
vs par by level: part-score +0.44 (32) · game +1.11 (45) · slam -6.90 (10)
By role: declaring -0.55/bd (-2.63 vs par · 43) · defending -0.20/bd (+2.46 vs par · 44)
By vulnerability: vulnerable -0.45/bd (+0.20 vs par · 44) · not vulnerable -0.29/bd (-0.33 vs par · 43)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 4 | A.Yeung | Z.Ferov – D.Lazarov | Open | 8 | +1.1 | +0.14 | +1.38 |
| Round 5 | A.Yeung | C.Li – X.Liu | Open | 8 | -8.9 | -1.11 | -2.00 |
| Round 7 | A.Yeung | A.Hutton – O.Powell | Closed | 8 | -5.6 | -0.70 | -1.12 |
| Round 8 | A.Yeung | A.Bauer – P.Petrov | Closed | 8 | +21.0 | +2.62 | -0.12 |
| Round 9 | A.Dhir | E.Olla – T.Straume | Closed | 8 | -7.6 | -0.95 | +1.50 |
| Round 10 | A.Yeung | M.Sprinkhuizen – A.Casparie | Open | 8 | -12.2 | -1.52 | -1.62 |
| Round 12 | A.Yeung | S.Bar – S.Kar | Closed | 7 | +9.1 | +1.30 | +1.43 |
| Round 13 | A.Yeung | D.Hsiao – Y.Chen | Open | 8 | +1.2 | +0.15 | +2.50 |
| Round 16 | A.Yeung | N.Tiscornia Biaus – I.Miquelez Caballero | Closed | 8 | -16.6 | -2.08 | -2.88 |
| Round 18 | A.Yeung | J.Middleton – A.Huang | Open | 8 | -24.2 | -3.02 | -0.38 |
| Round 19 | A.Yeung | R.Zvorovski – R.Toom | Closed | 8 | +10.3 | +1.29 | +0.88 |
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 |
|---|---|---|---|---|---|---|---|
| +10.1 | Round 7 | 🏴 ENGLAND | 21 | 6♣ | ♥5 | = | +0 |
| +9.7 | Round 10 | 🇳🇱 NETHERLANDS | 11 | 3NT | ♥2 | -1 | +11 |
| +9.1 | Round 4 | 🇧🇬 BULGARIA | 29 | 2♥ | ♠K | -2 | +10 |
| +8.7 | Round 8 | 🇩🇪 GERMANY | 28 | 6♠ | ♦J | = | +0 |
| +8.2 | Round 19 | 🇪🇪 ESTONIA | 23 | 4♠ | ♥A | -1 | +16 |
| +6.9 | Round 4 | 🇧🇬 BULGARIA | 25 | 3NT | ♥A | -1 | +10 |
| +6.5 | Round 13 | 🇹🇼 CHINESE TAIPEI | 5 | 4♠ | ♣T | -2 | +7 |
| +6.0 | Round 12 | 🇮🇳 INDIA | 28 | 4♠ | ♦6 | -1 | +5 |
| +5.4 | Round 8 | 🇩🇪 GERMANY | 27 | 3♦ | ♥Q | -1 | +10 |
| +5.2 | Round 12 | 🇮🇳 INDIA | 30 | 4♠ | ♥A | +1 | +1 |
| +5.0 | Round 19 | 🇪🇪 ESTONIA | 22 | 1NTx | ♥K | -2 | +4 |
| +4.5 | Round 8 | 🇩🇪 GERMANY | 25 | 4♥ | ♣3 | +1 | +4 |
| +4.5 | Round 19 | 🇪🇪 ESTONIA | 21 | 4♠ | ♥5 | -2 | +7 |
| +4.2 | Round 4 | 🇧🇬 BULGARIA | 31 | 2♠ | ♥J | +2 | +2 |
| +3.9 | Round 8 | 🇩🇪 GERMANY | 31 | 3NT | ♦3 | +1 | +0 |
| +3.9 | Round 16 | 🇦🇷 ARGENTINA | 26 | 2NT | ♠Q | = | +6 |
| +3.5 | Round 10 | 🇳🇱 NETHERLANDS | 12 | 4♠ | ♥A | = | +6 |
| +3.4 | Round 9 | 🇱🇻 LATVIA | 5 | 2NT | ♦4 | = | +0 |
| +3.2 | Round 10 | 🇳🇱 NETHERLANDS | 15 | 2♣ | ♣2 | = | +5 |
| +2.7 | Round 9 | 🇱🇻 LATVIA | 4 | 4♥ | ♦Q | -2 | +8 |
| +2.6 | Round 4 | 🇧🇬 BULGARIA | 26 | 2NT | ♥8 | +1 | +10 |
| +2.6 | Round 9 | 🇱🇻 LATVIA | 3 | 3NT | ♠Q | -3 | +7 |
| +2.6 | Round 16 | 🇦🇷 ARGENTINA | 29 | 2♠ | ♦K | +1 | +0 |
| +2.3 | Round 18 | 🏴 SCOTLAND | 12 | 1NT | ♣6 | -4 | +9 |
| +2.2 | Round 16 | 🇦🇷 ARGENTINA | 27 | 4♥ | ♦J | = | -1 |
| +2.0 | Round 8 | 🇩🇪 GERMANY | 29 | 4♠ | ♦3 | +1 | +0 |
| +1.7 | Round 13 | 🇹🇼 CHINESE TAIPEI | 6 | 5♦ | ♣Q | -2 | +5 |
| +1.5 | Round 16 | 🇦🇷 ARGENTINA | 25 | 4♥ | ♣K | -2 | +1 |
| +1.2 | Round 9 | 🇱🇻 LATVIA | 8 | 3♠ | ♦T | -1 | +5 |
| +0.8 | Round 13 | 🇹🇼 CHINESE TAIPEI | 8 | 3NT | ♥3 | +2 | +0 |
| +0.8 | Round 18 | 🏴 SCOTLAND | 9 | 4♥ | ♠J | +2 | +11 |
| +0.5 | Round 18 | 🏴 SCOTLAND | 11 | 4♠ | ♦2 | +1 | +0 |
| +0.4 | Round 12 | 🇮🇳 INDIA | 31 | 4♠ | ♠7 | +2 | +11 |
| +0.4 | Round 18 | 🏴 SCOTLAND | 16 | 3NT | ♦9 | -1 | +5 |
| +0.3 | Round 19 | 🇪🇪 ESTONIA | 17 | 4♠ | ♦Q | +1 | +0 |
| +0.1 | Round 5 | 🇨🇳 CHINA | 3 | 4♠ | ♦2 | = | +0 |
| +0.1 | Round 12 | 🇮🇳 INDIA | 32 | 4♥ | ♣K | +1 | +0 |
| +0.1 | Round 19 | 🇪🇪 ESTONIA | 20 | 4♠ | ♦5 | = | -1 |
| -0.0 | Round 8 | 🇩🇪 GERMANY | 30 | 5♠ | ♣A | = | +0 |
| -0.2 | Round 9 | 🇱🇻 LATVIA | 2 | 1NT | ♥9 | +1 | +0 |
| -0.2 | Round 13 | 🇹🇼 CHINESE TAIPEI | 4 | 1NT | ♣A | +1 | +0 |
| -0.3 | Round 13 | 🇹🇼 CHINESE TAIPEI | 1 | 5♣ | ♠K | +1 | +11 |
| -0.3 | Round 13 | 🇹🇼 CHINESE TAIPEI | 3 | 2♠ | ♥K | = | -5 |
| -0.4 | Round 5 | 🇨🇳 CHINA | 4 | 3♥ | ♣3 | -1 | +1 |
| -0.6 | Round 7 | 🏴 ENGLAND | 20 | 1♠ | ♣Q | +1 | -1 |
| -0.7 | Round 5 | 🇨🇳 CHINA | 7 | 4♠ | ♦6 | = | +0 |
| -0.7 | Round 12 | 🇮🇳 INDIA | 25 | 2♠ | ♥T | = | -7 |
| -0.7 | Round 12 | 🇮🇳 INDIA | 29 | 2♠ | ♣A | = | +0 |
| -0.8 | Round 4 | 🇧🇬 BULGARIA | 27 | 3♠ | ♦K | -2 | -8 |
| -0.9 | Round 10 | 🇳🇱 NETHERLANDS | 16 | 5♣ | ♥T | -2 | +5 |
| -0.9 | Round 16 | 🇦🇷 ARGENTINA | 28 | 4♠ | ♣Q | = | -6 |
| -1.1 | Round 7 | 🏴 ENGLAND | 23 | 3♠ | ♥2 | -1 | +6 |
| -1.2 | Round 7 | 🏴 ENGLAND | 22 | 3NT | ♦T | = | +0 |
| -1.2 | Round 10 | 🇳🇱 NETHERLANDS | 9 | 6♠ | ♣A | = | +0 |
| -1.2 | Round 12 | 🇮🇳 INDIA | 26 | 4♠ | ♣K | = | +0 |
| -1.3 | Round 4 | 🇧🇬 BULGARIA | 32 | 6NT | ♠3 | = | +11 |
| -1.3 | Round 5 | 🇨🇳 CHINA | 2 | 5♣x | ♥2 | -1 | -6 |
| -1.3 | Round 5 | 🇨🇳 CHINA | 6 | 2♠ | ♥J | +1 | -10 |
| -1.6 | Round 5 | 🇨🇳 CHINA | 1 | 3♠ | ♥8 | -2 | -5 |
| -1.6 | Round 19 | 🇪🇪 ESTONIA | 19 | 4♥ | ♣Q | -1 | -16 |
| -1.7 | Round 8 | 🇩🇪 GERMANY | 32 | 4♥ | ♠K | +2 | -9 |
| -1.7 | Round 13 | 🇹🇼 CHINESE TAIPEI | 2 | 2♥ | ♣7 | -1 | +2 |
| -1.8 | Round 5 | 🇨🇳 CHINA | 5 | 3♥ | ♠5 | +1 | +4 |
| -1.8 | Round 8 | 🇩🇪 GERMANY | 26 | 2♥ | ♦A | = | -6 |
| -1.9 | Round 5 | 🇨🇳 CHINA | 8 | 2♥ | ♠K | = | +0 |
| -2.1 | Round 7 | 🏴 ENGLAND | 19 | 4♥ | ♣J | = | +0 |
| -2.2 | Round 7 | 🏴 ENGLAND | 18 | 3NT | ♥K | -1 | -4 |
| -2.5 | Round 19 | 🇪🇪 ESTONIA | 18 | 4♦ | ♥2 | -1 | +2 |
| -3.5 | Round 10 | 🇳🇱 NETHERLANDS | 14 | 3♣ | ♥A | = | -6 |
| -3.7 | Round 19 | 🇪🇪 ESTONIA | 24 | 3♠ | ♣7 | -1 | -5 |
| -3.8 | Round 9 | 🇱🇻 LATVIA | 7 | 1NT | ♠5 | = | +1 |
| -4.2 | Round 7 | 🏴 ENGLAND | 24 | 2♠ | ♠T | -1 | -4 |
| -4.2 | Round 9 | 🇱🇻 LATVIA | 6 | 4♠x | ♣Q | -1 | -8 |
| -4.3 | Round 7 | 🏴 ENGLAND | 17 | 3♠ | ♦5 | -3 | -6 |
| -4.6 | Round 18 | 🏴 SCOTLAND | 14 | 3NTx | ♠5 | -1 | +0 |
| -5.3 | Round 13 | 🇹🇼 CHINESE TAIPEI | 7 | 6♠ | ♦5 | = | +0 |
| -6.8 | Round 4 | 🇧🇬 BULGARIA | 30 | 3NT | ♣T | = | -7 |
| -6.9 | Round 18 | 🏴 SCOTLAND | 10 | 6♠ | ♠9 | -1 | -16 |
| -6.9 | Round 18 | 🏴 SCOTLAND | 15 | 3NT | ♦6 | +1 | +1 |
| -7.3 | Round 16 | 🇦🇷 ARGENTINA | 31 | 4♠ | ♥A | -2 | -2 |
| -9.0 | Round 16 | 🇦🇷 ARGENTINA | 30 | 4♠ | ♥6 | -1 | -11 |
| -9.3 | Round 9 | 🇱🇻 LATVIA | 1 | 4♠ | ♠4 | = | -1 |
| -9.6 | Round 16 | 🇦🇷 ARGENTINA | 32 | 3NT | ♣7 | = | -10 |
| -9.8 | Round 18 | 🏴 SCOTLAND | 13 | 6♥ | ♦2 | -1 | -13 |
| -11.2 | Round 10 | 🇳🇱 NETHERLANDS | 10 | 6♦x | ♣A | = | -14 |
| -11.8 | Round 10 | 🇳🇱 NETHERLANDS | 13 | 6♣ | ♦J | -2 | -20 |
| -12.8 | Round 4 | 🇧🇬 BULGARIA | 28 | 6♠ | ♥8 | -3 | -17 |