KORBEL Daniel · ZHANG
vs par split: bidding +0.04 · play +0.32
Strength of schedule: opponents averaged -0.04/bd (an average draw) → opponent-adjusted +0.84/bd
Card play — on target: opening leads 81.0% #262 of 488 · declarer play 80.8% #128 of 488 · defence 92.0% #90 of 488
Bidding activity — not a pass: 42.8% #248 of 488 (125/292)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 87.5% (8) | 76.9% (13) |
| Declarer play | 40.0% (5) | 90.5% (21) |
| Defence | 92.3% (13) | 91.9% (37) |
Opening leads by suit led: ♠ 100.0% (2) · ♥ 75.0% (4) · ♦ 80.0% (5) · ♣ 80.0% (10)
vs par by strain: NT +1.33 (24) · a suit +0.04 (74)
vs par by level: part-score +0.18 (38) · game +1.10 (51) · slam -3.11 (9)
By role: declaring +1.13/bd (-2.17 vs par · 48) · defending +0.64/bd (+2.78 vs par · 50)
By vulnerability: vulnerable +1.65/bd (+0.55 vs par · 49) · not vulnerable +0.11/bd (+0.16 vs par · 49)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | S.Shi | A.Zareba – Y.Shen | Open | 14 | +11.3 | +0.81 | -1.79 |
| Round 3 | S.Shi | S.Liu – L.Zhang | Open | 14 | +24.8 | +1.77 | +1.07 |
| Round 4 | S.Shi | Z.Shao – J.Ran | Closed | 14 | -2.0 | -0.14 | +0.43 |
| Round 5 | S.Shi | M.Tylvad – D.Tylvad | Open | 14 | +11.6 | +0.83 | -0.86 |
| Round 6 | S.Shi | S.George – M.Heshmat | Closed | 14 | +38.7 | +2.76 | +3.93 |
| Round 7 | S.Shi | A.Langeland – T.Garvey | Open | 14 | -0.5 | -0.04 | +0.29 |
| Round 8 | S.Shi | H.Eythorsdottir – M.Itabashi | Open | 14 | +2.2 | +0.16 | -0.57 |
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 |
|---|---|---|---|---|---|---|---|
| +10.7 | Round 8 | LEWIS | 19 | 4♦ | ♠Q | -4 | +14 |
| +10.2 | Round 6 | RATRUT | 15 | 4♥x | ♠2 | -3 | +9 |
| +9.9 | Round 6 | RATRUT | 28 | 4♠ | ♣K | -1 | +14 |
| +9.6 | Round 1 | SHEN | 7 | 4♠x | ♠J | = | +11 |
| +9.6 | Round 3 | REIGNWOOD | 4 | 4NT | ♠9 | -1 | +20 |
| +8.7 | Round 6 | RATRUT | 20 | 3NT | ♣3 | = | +10 |
| +7.6 | Round 7 | GOOD LUCK | 3 | 5♦ | ♥3 | = | +7 |
| +6.6 | Round 1 | SHEN | 11 | 3♥ | ♦A | = | +11 |
| +6.6 | Round 7 | GOOD LUCK | 7 | 6♦ | ♠2 | +1 | -7 |
| +6.2 | Round 5 | PLAN B BRIDGE | 9 | 3NT | ♥K | = | +0 |
| +5.5 | Round 8 | LEWIS | 28 | 4♠x | ♥Q | -3 | -3 |
| +5.4 | Round 3 | REIGNWOOD | 12 | 4♥ | ♣6 | = | +0 |
| +5.3 | Round 4 | GR4S | 20 | 3♣ | ♦8 | = | +6 |
| +5.1 | Round 6 | RATRUT | 22 | 4♥ | ♠Q | = | +7 |
| +4.9 | Round 5 | PLAN B BRIDGE | 5 | 3♣ | ♣5 | -3 | +2 |
| +4.8 | Round 3 | REIGNWOOD | 8 | 3NT | ♥5 | +1 | +0 |
| +4.5 | Round 5 | PLAN B BRIDGE | 10 | 1NT | ♣2 | +1 | +11 |
| +3.9 | Round 3 | REIGNWOOD | 2 | 4♦ | ♠A | -1 | -2 |
| +3.8 | Round 3 | REIGNWOOD | 3 | 3♠ | ♥A | +1 | +7 |
| +3.8 | Round 7 | GOOD LUCK | 4 | 3♠ | ♥8 | +2 | -2 |
| +3.5 | Round 1 | SHEN | 13 | 4♠x | ♥K | +3 | -13 |
| +3.5 | Round 4 | GR4S | 18 | 4♠ | ♦J | = | +3 |
| +3.5 | Round 5 | PLAN B BRIDGE | 7 | 4♥ | ♦3 | +1 | -10 |
| +3.5 | Round 6 | RATRUT | 23 | 3♣ | ♥J | -2 | +7 |
| +3.2 | Round 4 | GR4S | 17 | 4♥ | ♦5 | = | +0 |
| +3.2 | Round 6 | RATRUT | 17 | 3♥ | ♣2 | +1 | +4 |
| +3.0 | Round 5 | PLAN B BRIDGE | 12 | 2♠ | ♦A | +1 | +1 |
| +3.0 | Round 6 | RATRUT | 18 | 5♣x | ♥T | -1 | +6 |
| +2.8 | Round 4 | GR4S | 26 | 4♠ | ♦A | -1 | +12 |
| +2.8 | Round 5 | PLAN B BRIDGE | 4 | 2♠ | ♥T | -3 | -8 |
| +2.5 | Round 1 | SHEN | 3 | 3NT | ♦A | +3 | +2 |
| +2.4 | Round 7 | GOOD LUCK | 2 | 1NT | ♦2 | = | +1 |
| +2.1 | Round 3 | REIGNWOOD | 9 | 3NT | ♥6 | -2 | +8 |
| +2.0 | Round 5 | PLAN B BRIDGE | 13 | 5♣ | ♠8 | +2 | -13 |
| +1.7 | Round 8 | LEWIS | 27 | 3♣ | ♦3 | = | +0 |
| +1.6 | Round 1 | SHEN | 4 | 3♠ | ♦A | = | +0 |
| +1.6 | Round 6 | RATRUT | 19 | 3NT | ♠2 | = | -1 |
| +1.5 | Round 8 | LEWIS | 18 | 2♠ | ♥8 | +1 | +7 |
| +1.5 | Round 8 | LEWIS | 26 | 2♥ | ♠K | -1 | +0 |
| +1.1 | Round 4 | GR4S | 23 | 4♠ | ♦3 | -1 | +6 |
| +1.1 | Round 4 | GR4S | 28 | 1NT | ♠3 | -1 | -2 |
| +1.1 | Round 7 | GOOD LUCK | 1 | 2♥ | ♠3 | +1 | -7 |
| +1.0 | Round 1 | SHEN | 6 | 4♥ | ♣A | = | +0 |
| +0.9 | Round 3 | REIGNWOOD | 6 | 2NT | ♠5 | +1 | -6 |
| +0.9 | Round 4 | GR4S | 21 | 2♠ | ♣4 | +1 | +0 |
| +0.9 | Round 5 | PLAN B BRIDGE | 2 | 3NT | ♣J | = | +0 |
| +0.7 | Round 8 | LEWIS | 16 | 4♠ | ♥9 | = | +0 |
| +0.5 | Round 7 | GOOD LUCK | 11 | 1NT | ♥2 | +1 | +7 |
| +0.4 | Round 4 | GR4S | 27 | 3♦ | ♥6 | +2 | -7 |
| +0.3 | Round 7 | GOOD LUCK | 13 | 6NT | ♣2 | +1 | +13 |
| +0.3 | Round 8 | LEWIS | 22 | 4♠ | ♣A | +2 | -11 |
| +0.2 | Round 4 | GR4S | 22 | 2♥ | ♦Q | +2 | -6 |
| +0.2 | Round 4 | GR4S | 25 | 2♥ | ♣J | -1 | -1 |
| +0.2 | Round 6 | RATRUT | 25 | 4♠ | ♦2 | +1 | +0 |
| +0.1 | Round 5 | PLAN B BRIDGE | 3 | 4♠ | ♣2 | = | +13 |
| +0.1 | Round 5 | PLAN B BRIDGE | 11 | 3NT | ♣2 | +1 | +0 |
| +0.0 | Round 1 | SHEN | 8 | 5♣x | ♥7 | -1 | +0 |
| -0.1 | Round 3 | REIGNWOOD | 5 | 4♥ | ♣T | = | +1 |
| -0.1 | Round 8 | LEWIS | 21 | 2♠ | ♣T | = | +1 |
| -0.2 | Round 3 | REIGNWOOD | 11 | 4♥ | ♣K | +1 | +0 |
| -0.3 | Round 6 | RATRUT | 16 | 4♥ | ♦5 | = | +0 |
| -0.3 | Round 7 | GOOD LUCK | 8 | 4♥ | ♣T | = | +0 |
| -0.3 | Round 7 | GOOD LUCK | 9 | 3NT | ♥7 | +3 | +13 |
| -0.4 | Round 3 | REIGNWOOD | 7 | 4♥ | ♣J | = | +0 |
| -0.5 | Round 5 | PLAN B BRIDGE | 14 | 2♣ | ♥J | = | +1 |
| -0.5 | Round 7 | GOOD LUCK | 14 | 4♠ | ♥3 | -1 | -4 |
| -0.5 | Round 8 | LEWIS | 25 | 3NT | ♥2 | +2 | +0 |
| -0.6 | Round 1 | SHEN | 5 | 2♣ | ♥K | -1 | -3 |
| -0.6 | Round 1 | SHEN | 14 | 3NT | ♠2 | +1 | +1 |
| -0.7 | Round 1 | SHEN | 1 | 5♥ | ♣2 | +1 | -11 |
| -0.7 | Round 3 | REIGNWOOD | 13 | 6NT | ♦J | +1 | -13 |
| -0.8 | Round 1 | SHEN | 10 | 4♥ | ♦5 | +1 | +0 |
| -0.9 | Round 6 | RATRUT | 27 | 4♥ | ♠A | = | +1 |
| -1.0 | Round 6 | RATRUT | 21 | 3♠ | ♥A | -1 | +1 |
| -1.1 | Round 3 | REIGNWOOD | 14 | 4♠ | ♦Q | +1 | +0 |
| -1.1 | Round 7 | GOOD LUCK | 12 | 4♠ | ♥2 | -1 | +3 |
| -1.1 | Round 8 | LEWIS | 17 | 6♦ | ♣6 | = | +2 |
| -1.2 | Round 3 | REIGNWOOD | 10 | 2NT | ♦K | +1 | +0 |
| -1.5 | Round 1 | SHEN | 12 | 5♣x | ♦K | -3 | -4 |
| -1.6 | Round 4 | GR4S | 15 | 4♠ | ♣J | +1 | +0 |
| -1.6 | Round 7 | GOOD LUCK | 5 | 3♦ | ♥T | -1 | +0 |
| -1.7 | Round 8 | LEWIS | 20 | 3♣ | ♠3 | -1 | +1 |
| -1.9 | Round 6 | RATRUT | 26 | 3NT | ♥2 | +1 | +0 |
| -2.0 | Round 3 | REIGNWOOD | 1 | 4♥ | ♠A | -2 | +0 |
| -2.1 | Round 4 | GR4S | 16 | 3♣ | ♥A | -1 | -4 |
| -2.2 | Round 1 | SHEN | 9 | 3♠ | ♥A | = | -7 |
| -2.6 | Round 6 | RATRUT | 24 | 4♠ | ♥Q | = | -3 |
| -2.8 | Round 4 | GR4S | 24 | 2♦ | ♣7 | +1 | -1 |
| -3.6 | Round 5 | PLAN B BRIDGE | 1 | 3♥ | ♦A | = | -1 |
| -4.4 | Round 8 | LEWIS | 23 | 3NT | ♥Q | -1 | -12 |
| -4.5 | Round 5 | PLAN B BRIDGE | 6 | 6♦ | ♥3 | -1 | -10 |
| -5.1 | Round 8 | LEWIS | 24 | 3NT | ♣4 | = | -6 |
| -5.7 | Round 7 | GOOD LUCK | 6 | 3♥ | ♦K | +1 | -6 |
| -6.8 | Round 8 | LEWIS | 15 | 6♠ | ♦T | +1 | -1 |
| -7.1 | Round 1 | SHEN | 2 | 3♠ | ♥A | +1 | -12 |
| -7.8 | Round 5 | PLAN B BRIDGE | 8 | 6♣ | ♣2 | = | +2 |
| -13.3 | Round 7 | GOOD LUCK | 10 | 6NT | ♠3 | -3 | -14 |
| -14.2 | Round 4 | GR4S | 19 | 7♣ | ♣2 | = | +0 |