KANG Seongseok · SEOUL
vs par split: bidding -0.40 · play -0.21
Strength of schedule: opponents averaged +0.16/bd (a tough draw) → opponent-adjusted +0.07/bd
Card play — on target: opening leads 85.0% #12 of 51 · declarer play 80.7% #10 of 51 · defence 83.1% #46 of 51
Bidding activity — not a pass: 42.4% #41 of 51 (217/512)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 91.7% (12) | 82.1% (28) |
| Declarer play | 86.7% (15) | 78.6% (42) |
| Defence | 80.0% (20) | 84.2% (57) |
Opening leads by suit led: ♠ 66.7% (12) · ♥ 91.7% (12) · ♦ 85.7% (7) · ♣ 100.0% (9)
vs par by strain: NT -0.93 (42) · a suit -0.51 (126)
vs par by level: part-score -0.07 (53) · game -0.84 (98) · slam -1.00 (17)
By role: declaring +0.52/bd (-1.71 vs par · 91) · defending -0.81/bd (+0.69 vs par · 77)
By vulnerability: vulnerable -0.60/bd (-1.34 vs par · 84) · not vulnerable +0.42/bd (+0.12 vs par · 84)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round of 64 | S.Roh | S.Rubenstein – C.Parker | Closed | 14 | +14.6 | +1.04 | -0.64 |
| Round of 64 | S.Roh | B.Moss – J.Grue | Closed | 14 | -4.2 | -0.30 | +1.57 |
| Round of 64 | S.Roh | J.Grue – B.Moss | Open | 14 | -19.1 | -1.36 | -1.14 |
| Round of 64 | S.Roh | B.Moss – J.Grue | Closed | 14 | +4.0 | +0.29 | +2.21 |
| Round of 32 | S.Roh | N.L'Ecuyer – P.Street | Open | 14 | +1.2 | +0.09 | -2.79 |
| Round of 32 | S.Roh | A.Zamir – O.Toledano | Closed | 14 | -18.6 | -1.33 | -4.71 |
| Round of 32 | S.Roh | P.Zatorski – R.Pachtman | Open | 14 | +2.8 | +0.20 | +0.71 |
| Round of 32 | S.Roh | A.Zamir – O.Toledano | Closed | 14 | +6.5 | +0.46 | +0.07 |
| Round of 16 | S.Roh | S.Evenstad – K.Bogo | Open | 14 | -2.3 | -0.16 | -1.07 |
| Round of 16 | S.Roh | S.Evenstad – K.Bogo | Open | 14 | +32.3 | +2.31 | +1.50 |
| Round of 16 | S.Roh | M.Macura – D.Vozabal | Open | 14 | -18.9 | -1.35 | -1.50 |
| Round of 16 | S.Roh | S.Evenstad – K.Bogo | Open | 14 | -13.3 | -0.95 | -1.57 |
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 |
|---|---|---|---|---|---|---|---|
| +13.3 | Round of 64 | PARKER | 13 | 2♥x | ♠5 | = | +11 |
| +12.4 | Round of 64 | PARKER | 8 | 4♠x | ♥K | = | +13 |
| +12.3 | Round of 32 | EASY STREET | 16 | 4♠x | ♣A | = | +9 |
| +11.1 | Round of 32 | EASY STREET | 1 | 6♣ | ♠A | = | +0 |
| +10.9 | Round of 64 | PARKER | 31 | 4♥ | ♣Q | = | +11 |
| +10.7 | Round of 64 | PARKER | 55 | 7♥ | ♠J | -1 | +14 |
| +10.1 | Round of 64 | PARKER | 47 | 7♠ | ♠2 | -2 | +20 |
| +10.0 | Round of 64 | PARKER | 17 | 5♠x | ♦5 | +1 | +12 |
| +9.4 | Round of 16 | MILANBRIDGE | 13 | 4♠ | ♥A | = | +1 |
| +9.3 | Round of 16 | MILANBRIDGE | 16 | 5♥x | ♠J | = | +5 |
| +9.2 | Round of 32 | EASY STREET | 10 | 4♦ | ♥Q | -1 | +12 |
| +9.0 | Round of 64 | PARKER | 37 | 4♥ | ♠4 | = | +3 |
| +8.8 | Round of 16 | MILANBRIDGE | 25 | 6♠x | ♦Q | -4 | +0 |
| +7.9 | Round of 64 | PARKER | 20 | 4♠x | ♣7 | -3 | +12 |
| +7.8 | Round of 64 | PARKER | 18 | 4♠ | ♥Q | -1 | +10 |
| +7.1 | Round of 16 | MILANBRIDGE | 27 | 3NTx | ♦Q | -2 | +9 |
| +6.5 | Round of 16 | MILANBRIDGE | 19 | 5♦ | ♥2 | = | -2 |
| +6.2 | Round of 16 | MILANBRIDGE | 49 | 1NT | ♠5 | = | +10 |
| +6.0 | Round of 32 | EASY STREET | 47 | 4♠ | ♥A | = | +6 |
| +5.6 | Round of 16 | MILANBRIDGE | 20 | 2♠ | ♣5 | = | +0 |
| +5.5 | Round of 32 | EASY STREET | 3 | 6♣ | ♥A | = | +0 |
| +5.2 | Round of 32 | EASY STREET | 22 | 1NT | ♦3 | +3 | +8 |
| +5.0 | Round of 32 | EASY STREET | 6 | 4♥x | ♣T | -3 | +8 |
| +5.0 | Round of 16 | MILANBRIDGE | 44 | 3NT | ♥5 | -2 | +7 |
| +4.9 | Round of 16 | MILANBRIDGE | 35 | 5♦ | ♥9 | +1 | -10 |
| +4.7 | Round of 64 | PARKER | 12 | 3NT | ♥6 | -1 | +6 |
| +4.7 | Round of 32 | EASY STREET | 29 | 3♣ | ♠5 | = | +5 |
| +4.7 | Round of 32 | EASY STREET | 52 | 4♠ | ♣3 | -1 | +5 |
| +4.6 | Round of 16 | MILANBRIDGE | 28 | 4♥ | ♠A | -1 | +6 |
| +4.3 | Round of 32 | EASY STREET | 7 | 4♠ | ♦5 | = | +0 |
| +4.2 | Round of 32 | EASY STREET | 20 | 6♠ | ♥K | +1 | -13 |
| +4.2 | Round of 16 | MILANBRIDGE | 50 | 3NT | ♦J | +2 | +2 |
| +4.0 | Round of 64 | PARKER | 43 | 3NT | ♣2 | -1 | +11 |
| +3.4 | Round of 64 | PARKER | 50 | 4♥x | ♦T | = | +9 |
| +3.4 | Round of 32 | EASY STREET | 30 | 2♠ | ♥J | = | +5 |
| +3.4 | Round of 32 | EASY STREET | 45 | 3NT | ♠J | -1 | +10 |
| +3.3 | Round of 16 | MILANBRIDGE | 5 | 4♥ | ♠6 | -1 | +5 |
| +3.3 | Round of 16 | MILANBRIDGE | 26 | 3NT | ♠6 | +1 | +11 |
| +3.2 | Round of 32 | EASY STREET | 54 | 3♥ | ♠A | = | +0 |
| +3.0 | Round of 32 | EASY STREET | 46 | 2♥ | ♦K | = | +6 |
| +2.9 | Round of 16 | MILANBRIDGE | 36 | 2NT | ♠J | -3 | +2 |
| +2.7 | Round of 32 | EASY STREET | 32 | 1NT | ♥A | +1 | +0 |
| +2.7 | Round of 16 | MILANBRIDGE | 34 | 3NT | ♠Q | +1 | +0 |
| +2.5 | Round of 64 | PARKER | 38 | 3NT | ♥6 | +2 | +1 |
| +2.3 | Round of 16 | MILANBRIDGE | 22 | 3NT | ♦6 | = | +7 |
| +2.1 | Round of 32 | EASY STREET | 38 | 4♥ | ♣J | = | +0 |
| +2.0 | Round of 64 | PARKER | 4 | 3NT | ♥T | = | +0 |
| +2.0 | Round of 16 | MILANBRIDGE | 24 | 4♠ | ♦9 | +1 | +0 |
| +2.0 | Round of 16 | MILANBRIDGE | 55 | 6♣ | ♠5 | +1 | +1 |
| +1.9 | Round of 64 | PARKER | 30 | 4♠ | ♣T | = | +0 |
| +1.9 | Round of 16 | MILANBRIDGE | 11 | 4♠ | ♥A | -1 | +4 |
| +1.7 | Round of 64 | PARKER | 27 | 4♠ | ♦5 | +2 | +2 |
| +1.7 | Round of 16 | MILANBRIDGE | 52 | 4♥ | ♦J | +1 | +0 |
| +1.6 | Round of 32 | EASY STREET | 48 | 1NT | ♥T | = | -1 |
| +1.4 | Round of 32 | EASY STREET | 34 | 4♥ | ♠A | = | +0 |
| +1.3 | Round of 64 | PARKER | 54 | 1♥ | ♣5 | +1 | +0 |
| +1.3 | Round of 32 | EASY STREET | 19 | 3♠ | ♣J | -1 | -1 |
| +1.2 | Round of 64 | PARKER | 16 | 4♥ | ♦4 | +2 | +1 |
| +1.2 | Round of 32 | EASY STREET | 24 | 2♥ | ♦K | = | +0 |
| +1.2 | Round of 16 | MILANBRIDGE | 45 | 3♣ | ♦A | +1 | +1 |
| +1.1 | Round of 64 | PARKER | 53 | 2♦ | ♠9 | = | -2 |
| +1.0 | Round of 32 | EASY STREET | 17 | 3NT | ♣9 | +2 | +0 |
| +0.9 | Round of 64 | PARKER | 21 | 2♠ | ♥7 | = | +0 |
| +0.9 | Round of 16 | MILANBRIDGE | 14 | 4♥x | ♦Q | -1 | -1 |
| +0.8 | Round of 16 | MILANBRIDGE | 6 | 4♠ | ♣A | -1 | -4 |
| +0.8 | Round of 16 | MILANBRIDGE | 30 | 4♠ | ♥4 | -1 | +5 |
| +0.8 | Round of 16 | MILANBRIDGE | 41 | 3NT | ♦8 | +2 | +1 |
| +0.6 | Round of 16 | MILANBRIDGE | 3 | 4♥ | ♣3 | = | +0 |
| +0.5 | Round of 64 | PARKER | 49 | 3NT | ♦9 | +2 | +0 |
| +0.3 | Round of 64 | PARKER | 1 | 3♠ | ♥2 | -1 | +8 |
| +0.3 | Round of 64 | PARKER | 10 | 4♥ | ♦J | = | +0 |
| +0.3 | Round of 64 | PARKER | 44 | 3NT | ♥3 | +1 | +1 |
| +0.3 | Round of 32 | EASY STREET | 33 | 2♥ | ♥J | = | +0 |
| +0.3 | Round of 16 | MILANBRIDGE | 8 | 1NT | ♥K | = | +1 |
| +0.2 | Round of 64 | PARKER | 34 | 3NT | ♣T | +1 | +0 |
| +0.2 | Round of 64 | PARKER | 36 | 3NT | ♦Q | = | +1 |
| +0.2 | Round of 32 | EASY STREET | 8 | 3NT | ♥2 | +1 | +0 |
| +0.1 | Round of 64 | PARKER | 5 | 4♠ | ♦Q | -1 | -12 |
| +0.1 | Round of 32 | EASY STREET | 40 | 3♠ | ♦Q | +2 | +12 |
| +0.1 | Round of 32 | EASY STREET | 49 | 1NT | ♦T | +1 | +7 |
| +0.1 | Round of 32 | EASY STREET | 50 | 2♠ | ♠4 | +1 | -7 |
| -0.1 | Round of 64 | PARKER | 52 | 3♣ | ♠6 | +1 | +0 |
| -0.1 | Round of 32 | EASY STREET | 39 | 4♠ | ♣Q | +1 | +0 |
| -0.1 | Round of 16 | MILANBRIDGE | 31 | 2♥ | ♦T | +2 | +2 |
| -0.2 | Round of 16 | MILANBRIDGE | 17 | 3♥ | ♠5 | -1 | +2 |
| -0.3 | Round of 32 | EASY STREET | 31 | 4♥ | ♠A | +1 | +0 |
| -0.3 | Round of 32 | EASY STREET | 42 | 4♥ | ♦T | +1 | +0 |
| -0.3 | Round of 16 | MILANBRIDGE | 7 | 2NT | ♠3 | -1 | -5 |
| -0.3 | Round of 16 | MILANBRIDGE | 23 | 4♥ | ♦5 | -1 | +1 |
| -0.3 | Round of 16 | MILANBRIDGE | 42 | 4♠ | ♣3 | +1 | +0 |
| -0.4 | Round of 64 | PARKER | 2 | 4♠ | ♣Q | = | -11 |
| -0.4 | Round of 16 | MILANBRIDGE | 46 | 3♥ | ♣T | -2 | -2 |
| -0.5 | Round of 64 | PARKER | 26 | 4♠ | ♥3 | +1 | +0 |
| -0.5 | Round of 32 | EASY STREET | 44 | 4♠ | ♣A | +1 | +0 |
| -0.5 | Round of 32 | EASY STREET | 56 | 3♥ | ♠A | -3 | -10 |
| -0.5 | Round of 16 | MILANBRIDGE | 47 | 2♥ | ♣2 | = | -7 |
| -0.7 | Round of 64 | PARKER | 7 | 5♣ | ♥A | = | -3 |
| -0.8 | Round of 16 | MILANBRIDGE | 51 | 6♠ | ♠8 | +1 | -1 |
| -0.9 | Round of 64 | PARKER | 45 | 3NT | ♥3 | +2 | -11 |
| -0.9 | Round of 32 | EASY STREET | 14 | 2♠ | ♣4 | +2 | -2 |
| -0.9 | Round of 16 | MILANBRIDGE | 37 | 4♠ | ♣A | -3 | -1 |
| -1.0 | Round of 64 | PARKER | 3 | 3♦ | ♠J | = | +0 |
| -1.0 | Round of 64 | PARKER | 6 | 3♠ | ♦A | -2 | +11 |
| -1.1 | Round of 64 | PARKER | 22 | 4♠ | ♦T | +1 | -4 |
| -1.1 | Round of 32 | EASY STREET | 41 | 3NT | ♦5 | = | +1 |
| -1.3 | Round of 16 | MILANBRIDGE | 39 | 4♦ | ♠3 | -1 | +4 |
| -1.4 | Round of 32 | EASY STREET | 13 | 3NT | ♥A | -2 | -7 |
| -1.5 | Round of 64 | PARKER | 25 | 3♥ | ♦6 | -1 | +2 |
| -1.5 | Round of 16 | MILANBRIDGE | 12 | 2♠ | ♥3 | = | +1 |
| -1.6 | Round of 32 | EASY STREET | 23 | 4♦x | ♣Q | -1 | -15 |
| -1.6 | Round of 16 | MILANBRIDGE | 43 | 2♥ | ♣Q | +1 | -6 |
| -1.7 | Round of 16 | MILANBRIDGE | 29 | 2♥ | ♦Q | +2 | -1 |
| -1.7 | Round of 16 | MILANBRIDGE | 33 | 4♥ | ♠A | = | +0 |
| -1.8 | Round of 32 | EASY STREET | 4 | 3NT | ♠2 | -1 | -12 |
| -1.9 | Round of 32 | EASY STREET | 37 | 4♠ | ♦9 | -2 | +6 |
| -1.9 | Round of 16 | MILANBRIDGE | 4 | 4♠ | ♥K | +1 | -1 |
| -2.2 | Round of 64 | PARKER | 14 | 6♠ | ♦4 | +1 | -11 |
| -2.3 | Round of 64 | PARKER | 42 | 5♦x | ♣Q | -2 | +0 |
| -2.3 | Round of 32 | EASY STREET | 18 | 1NT | ♠J | -1 | -6 |
| -2.3 | Round of 32 | EASY STREET | 51 | 3♣ | ♥T | +1 | +0 |
| -2.4 | Round of 32 | EASY STREET | 9 | 4♠x | ♣A | -3 | -4 |
| -2.5 | Round of 64 | PARKER | 19 | 5♦ | ♣A | = | +0 |
| -2.5 | Round of 64 | PARKER | 40 | 3NT | ♥J | +1 | -14 |
| -2.5 | Round of 32 | EASY STREET | 53 | 2♥ | ♥J | -1 | +2 |
| -2.5 | Round of 16 | MILANBRIDGE | 21 | 3♠ | ♦A | -1 | -6 |
| -2.7 | Round of 16 | MILANBRIDGE | 2 | 1NT | ♦J | +1 | -6 |
| -2.8 | Round of 64 | PARKER | 41 | 3♠ | ♠6 | = | +0 |
| -2.9 | Round of 64 | PARKER | 24 | 4♠ | ♦4 | +2 | -1 |
| -3.4 | Round of 16 | MILANBRIDGE | 1 | 2♠ | ♣7 | = | -1 |
| -3.5 | Round of 32 | EASY STREET | 43 | 4♠x | ♠K | +1 | -6 |
| -3.6 | Round of 32 | EASY STREET | 35 | 3♣ | ♥K | -2 | -8 |
| -3.8 | Round of 64 | PARKER | 28 | 3NT | ♣6 | = | +1 |
| -3.9 | Round of 32 | EASY STREET | 26 | 2♠ | ♠8 | +1 | -2 |
| -4.0 | Round of 16 | MILANBRIDGE | 32 | 2♠ | ♠3 | -1 | -5 |
| -4.3 | Round of 32 | EASY STREET | 5 | 3NT | ♦J | = | +0 |
| -4.6 | Round of 64 | PARKER | 9 | 3NT | ♣3 | -1 | -10 |
| -4.6 | Round of 32 | EASY STREET | 36 | 4♠ | ♥A | +1 | -11 |
| -4.6 | Round of 16 | MILANBRIDGE | 10 | 2♥ | ♠5 | -2 | -3 |
| -4.7 | Round of 64 | PARKER | 56 | 6♣ | ♠K | +1 | +11 |
| -4.8 | Round of 16 | MILANBRIDGE | 54 | 5♥ | ♠A | -2 | -9 |
| -5.1 | Round of 64 | PARKER | 29 | 4♥ | ♣6 | -2 | -5 |
| -5.1 | Round of 16 | MILANBRIDGE | 9 | 2♣ | ♥3 | +1 | -6 |
| -5.3 | Round of 32 | EASY STREET | 25 | 4♥ | ♠6 | -2 | -6 |
| -5.4 | Round of 32 | EASY STREET | 21 | 4♠ | ♥6 | = | -7 |
| -5.5 | Round of 64 | PARKER | 51 | 3NT | ♣7 | = | -10 |
| -5.7 | Round of 32 | EASY STREET | 11 | 3NT | ♣2 | -1 | -10 |
| -6.3 | Round of 64 | PARKER | 35 | 5♣ | ♥3 | -1 | -6 |
| -6.3 | Round of 32 | EASY STREET | 55 | 4♠ | ♦A | +2 | -11 |
| -6.4 | Round of 32 | EASY STREET | 15 | 3NT | ♣6 | -1 | -12 |
| -6.6 | Round of 64 | PARKER | 32 | 5♦ | ♥6 | = | +13 |
| -6.8 | Round of 16 | MILANBRIDGE | 15 | 3NT | ♦A | -1 | -12 |
| -7.0 | Round of 64 | PARKER | 48 | 5♥x | ♠K | -2 | -12 |
| -7.4 | Round of 16 | MILANBRIDGE | 18 | 6♣ | ♥A | = | +0 |
| -7.7 | Round of 16 | MILANBRIDGE | 56 | 4♠ | ♥5 | = | -7 |
| -8.1 | Round of 16 | MILANBRIDGE | 53 | 6♠ | ♦A | = | +0 |
| -8.4 | Round of 64 | PARKER | 39 | 5♦ | ♥A | = | -7 |
| -8.6 | Round of 64 | PARKER | 11 | 6♥ | ♦5 | -3 | -11 |
| -8.6 | Round of 32 | EASY STREET | 2 | 5♦ | ♠6 | -1 | -10 |
| -8.9 | Round of 16 | MILANBRIDGE | 40 | 6♥ | ♠K | +1 | -1 |
| -9.0 | Round of 32 | EASY STREET | 12 | 6♠ | ♦7 | -1 | -14 |
| -9.0 | Round of 32 | EASY STREET | 27 | 3NTx | ♥A | -2 | -9 |
| -9.1 | Round of 64 | PARKER | 23 | 5♦ | ♥K | = | +1 |
| -9.2 | Round of 64 | PARKER | 46 | 6♥ | ♥2 | = | +0 |
| -9.7 | Round of 16 | MILANBRIDGE | 48 | 3NT | ♠3 | +1 | -11 |
| -9.8 | Round of 64 | PARKER | 33 | 4♠ | ♥3 | = | -13 |
| -9.9 | Round of 32 | EASY STREET | 28 | 6♦x | ♠K | -2 | -12 |
| -12.1 | Round of 16 | MILANBRIDGE | 38 | 4♠ | ♦Q | +3 | -17 |
| -12.3 | Round of 64 | PARKER | 15 | 3♠x | ♠Q | -3 | -14 |