IZWANTOWSKI Jan · POLAND U21 B
vs par split: bidding +0.27 · play +0.29
Strength of schedule: opponents averaged +0.27/bd (a tough draw) → opponent-adjusted +0.15/bd
Card play — on target: opening leads 93.1% #19 of 183 · declarer play 72.0% #128 of 183 · defence 82.6% #114 of 183
Bidding activity — not a pass: 40.1% #116 of 183 (95/237)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 88.9% (9) | 95.0% (20) |
| Declarer play | 40.0% (5) | 80.0% (20) |
| Defence | 76.9% (13) | 84.8% (33) |
Opening leads by suit led: ♠ 88.9% (9) · ♥ 100.0% (3) · ♦ 100.0% (5) · ♣ 91.7% (12)
vs par by strain: NT +0.43 (23) · a suit +0.61 (61)
vs par by level: part-score +0.86 (29) · game +0.31 (51) · slam +1.50 (4)
By role: declaring -0.07/bd (-1.76 vs par · 38) · defending -0.16/bd (+2.48 vs par · 46)
By vulnerability: vulnerable -0.47/bd (-0.69 vs par · 42) · not vulnerable +0.23/bd (+1.81 vs par · 42)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | W.Tokarski | M.Ter Laare – W.Alkemade | Closed | 14 | -15.1 | -1.08 | -2.57 |
| Round 3 | W.Tokarski | O.Ghigheci – I.Coldea | Open | 14 | +3.7 | +0.26 | +3.21 |
| Round 4 | W.Tokarski | N.Saada – I.Bareket | Open | 14 | -3.0 | -0.21 | +2.57 |
| Round 6 | W.Tokarski | A.Kahraman – E.Caliskan | Open | 14 | +7.2 | +0.51 | -0.57 |
| Round 7 | W.Tokarski | J.Balasovs – J.Ilzins | Closed | 14 | +29.3 | +2.09 | +3.36 |
| Round 8 | W.Tokarski | N.Delimpaltadakis – V.Vroustis | Open | 14 | -32.1 | -2.29 | -2.64 |
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 |
|---|---|---|---|---|---|---|---|
| +11.5 | Round 3 | CERCOL | 5 | 4♠ | ♠6 | -1 | +12 |
| +9.9 | Round 7 | LATVIA | 5 | 6♣ | ♥Q | -1 | +14 |
| +9.5 | Round 7 | LATVIA | 6 | 4♥ | ♦6 | = | +7 |
| +7.8 | Round 3 | CERCOL | 13 | 2♠x | ♥K | -1 | +8 |
| +6.8 | Round 7 | LATVIA | 1 | 3♥x | ♦K | -3 | +12 |
| +6.1 | Round 6 | BARIS | 28 | 4♥ | ♠6 | = | +0 |
| +5.1 | Round 6 | BARIS | 21 | 5♥x | ♠A | -3 | +9 |
| +5.0 | Round 6 | BARIS | 17 | 5♥x | ♦5 | -1 | +0 |
| +4.5 | Round 6 | BARIS | 19 | 5♦x | ♠K | = | +4 |
| +4.4 | Round 1 | VALLON BRIDGE | 14 | 4♥ | ♠K | -2 | +11 |
| +4.4 | Round 4 | PATRICK SAADA | 28 | 3♣ | ♣4 | -1 | +5 |
| +4.3 | Round 3 | CERCOL | 1 | 3NT | ♠4 | +3 | +11 |
| +3.7 | Round 1 | VALLON BRIDGE | 7 | 7NT | ♦6 | = | +0 |
| +3.3 | Round 4 | PATRICK SAADA | 18 | 4♥ | ♠J | -1 | +5 |
| +3.2 | Round 7 | LATVIA | 10 | 4♦ | ♠J | = | +0 |
| +2.9 | Round 1 | VALLON BRIDGE | 12 | 3NT | ♠7 | +1 | -1 |
| +2.8 | Round 7 | LATVIA | 3 | 3NT | ♥5 | = | +7 |
| +2.7 | Round 3 | CERCOL | 4 | 3♣x | ♦9 | -1 | +2 |
| +2.5 | Round 7 | LATVIA | 14 | 4♥ | ♠5 | +1 | +0 |
| +1.9 | Round 8 | NIKOS | 27 | 1NT | ♥J | +1 | +1 |
| +1.6 | Round 7 | LATVIA | 9 | 3♠ | ♥J | = | +0 |
| +1.5 | Round 7 | LATVIA | 11 | 3♥ | ♦Q | = | +1 |
| +1.4 | Round 4 | PATRICK SAADA | 17 | 4♦ | ♠K | +1 | +7 |
| +1.4 | Round 8 | NIKOS | 26 | 3♥ | ♠A | -3 | +8 |
| +1.2 | Round 4 | PATRICK SAADA | 15 | 4♥ | ♠9 | +1 | +6 |
| +1.2 | Round 7 | LATVIA | 2 | 3NT | ♠6 | +2 | +14 |
| +1.1 | Round 4 | PATRICK SAADA | 23 | 2♣ | ♣T | +1 | +0 |
| +0.9 | Round 3 | CERCOL | 3 | 4♣ | ♠A | -1 | +1 |
| +0.8 | Round 1 | VALLON BRIDGE | 4 | 3♣ | ♣6 | = | +0 |
| +0.8 | Round 6 | BARIS | 27 | 4♥ | ♦2 | +1 | +0 |
| +0.8 | Round 8 | NIKOS | 19 | 3NT | ♠J | +1 | +11 |
| +0.7 | Round 1 | VALLON BRIDGE | 6 | 1♠ | ♣Q | = | -1 |
| +0.6 | Round 4 | PATRICK SAADA | 25 | 1NT | ♣Q | +1 | +1 |
| +0.6 | Round 6 | BARIS | 25 | 6♥ | ♦J | = | +0 |
| +0.5 | Round 6 | BARIS | 22 | 4♠ | ♣A | +1 | +0 |
| +0.4 | Round 1 | VALLON BRIDGE | 2 | 3♠ | ♦6 | = | +0 |
| +0.4 | Round 3 | CERCOL | 14 | 2♣ | ♠7 | -4 | +5 |
| +0.3 | Round 3 | CERCOL | 2 | 4♠ | ♣A | +2 | +12 |
| +0.3 | Round 8 | NIKOS | 22 | 3NT | ♠3 | -2 | -7 |
| +0.1 | Round 1 | VALLON BRIDGE | 8 | 4♠ | ♥Q | = | -1 |
| +0.1 | Round 4 | PATRICK SAADA | 19 | 3♥ | ♦K | = | +7 |
| +0.1 | Round 4 | PATRICK SAADA | 20 | 4♥ | ♣4 | +1 | +0 |
| +0.0 | Round 6 | BARIS | 15 | 1NT | ♣K | +2 | +6 |
| -0.2 | Round 8 | NIKOS | 20 | 4♠ | ♠J | -1 | -7 |
| -0.6 | Round 1 | VALLON BRIDGE | 3 | 4♥ | ♠A | -1 | -12 |
| -0.7 | Round 4 | PATRICK SAADA | 24 | 4♠ | ♣Q | = | +1 |
| -0.7 | Round 4 | PATRICK SAADA | 27 | 3NT | ♠8 | +3 | +11 |
| -0.8 | Round 6 | BARIS | 26 | 4♠ | ♣K | -1 | +0 |
| -0.9 | Round 4 | PATRICK SAADA | 26 | 4♠ | ♦J | +1 | +0 |
| -0.9 | Round 8 | NIKOS | 21 | 3NT | ♥4 | = | -1 |
| -1.1 | Round 1 | VALLON BRIDGE | 11 | 2NT | ♣2 | +1 | -1 |
| -1.1 | Round 6 | BARIS | 23 | 4♥ | ♠A | = | +0 |
| -1.1 | Round 7 | LATVIA | 12 | 1NT | ♦3 | -3 | -10 |
| -1.2 | Round 8 | NIKOS | 24 | 3NT | ♠3 | +1 | -1 |
| -1.4 | Round 7 | LATVIA | 8 | 3NT | ♠Q | = | +11 |
| -1.5 | Round 8 | NIKOS | 25 | 2♠ | ♦3 | -1 | -6 |
| -1.7 | Round 6 | BARIS | 16 | 3♦ | ♥J | +2 | -1 |
| -1.7 | Round 7 | LATVIA | 7 | 4♥ | ♣9 | +2 | -2 |
| -1.9 | Round 1 | VALLON BRIDGE | 5 | 3♥ | ♠Q | -3 | +4 |
| -1.9 | Round 3 | CERCOL | 9 | 3NT | ♦Q | = | +1 |
| -2.1 | Round 6 | BARIS | 24 | 4♠ | ♦6 | = | -8 |
| -2.3 | Round 7 | LATVIA | 13 | 2♦ | ♣K | +1 | +0 |
| -3.2 | Round 3 | CERCOL | 10 | 4♥ | ♥9 | = | +10 |
| -3.2 | Round 7 | LATVIA | 4 | 3NT | ♥3 | -2 | -7 |
| -3.2 | Round 8 | NIKOS | 28 | 4♠ | ♣K | = | -3 |
| -3.3 | Round 1 | VALLON BRIDGE | 10 | 1♠ | ♥6 | -2 | -2 |
| -3.3 | Round 4 | PATRICK SAADA | 22 | 4♥ | ♣A | = | +0 |
| -3.4 | Round 6 | BARIS | 20 | 3♣ | ♣3 | = | -6 |
| -3.5 | Round 3 | CERCOL | 6 | 3NT | ♦3 | -1 | -5 |
| -3.5 | Round 3 | CERCOL | 12 | 4♠x | ♥A | -1 | -6 |
| -3.6 | Round 3 | CERCOL | 8 | 4♠ | ♥T | +1 | +0 |
| -3.6 | Round 4 | PATRICK SAADA | 16 | 4♣x | ♦J | -3 | -4 |
| -3.6 | Round 8 | NIKOS | 23 | 4♥ | ♥3 | -1 | -9 |
| -3.8 | Round 3 | CERCOL | 11 | 4♠ | ♥5 | -2 | -6 |
| -4.1 | Round 8 | NIKOS | 16 | 3NT | ♥K | +1 | -6 |
| -4.7 | Round 3 | CERCOL | 7 | 3NT | ♥Q | +2 | +0 |
| -4.8 | Round 1 | VALLON BRIDGE | 13 | 3NT | ♠Q | -2 | -13 |
| -6.0 | Round 4 | PATRICK SAADA | 21 | 4♥ | ♦3 | = | -3 |
| -6.0 | Round 8 | NIKOS | 17 | 4♥ | ♣5 | = | +1 |
| -6.3 | Round 6 | BARIS | 18 | 3NT | ♠7 | -1 | -12 |
| -7.1 | Round 1 | VALLON BRIDGE | 9 | 3♥x | ♣A | -3 | -12 |
| -7.7 | Round 8 | NIKOS | 15 | 5♣ | ♥A | -1 | -10 |
| -8.1 | Round 8 | NIKOS | 18 | 6♥ | ♦8 | = | -8 |
| -9.3 | Round 1 | VALLON BRIDGE | 1 | 5♦x | ♦7 | -3 | -8 |