DUFRAT Katarzyna · SAKR
137rank
+29.1Butler · 80 bds
+0.36per board
±5.2swing
+0.78vs par /bd · #89/527
+0.77adjusted /bd
by round
vs par split: bidding +0.26 · play +0.51
Strength of schedule: opponents averaged +0.41/bd (a tough draw) → opponent-adjusted +0.77/bd
Card play — on target: opening leads 76.5% #326 of 527 · declarer play 76.5% #235 of 527 · defence 86.5% #220 of 527
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 75.0% (4) | 76.9% (13) |
| Declarer play | 25.0% (4) | 92.3% (13) |
| Defence | 88.9% (9) | 85.7% (28) |
Opening leads by suit led: ♠ 80.0% (5) · ♥ 66.7% (3) · ♦ 100.0% (2) · ♣ 71.4% (7)
vs par by strain: NT +0.29 (21) · a suit +0.95 (59)
vs par by level: part-score +0.86 (28) · game +1.33 (42) · slam -1.80 (10)
By role: declaring +0.12/bd (-1.81 vs par · 43) · defending +0.65/bd (+3.78 vs par · 37)
By vulnerability: vulnerable -0.04/bd (+0.93 vs par · 40) · not vulnerable +0.77/bd (+0.62 vs par · 40)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | M.Nowosadzki | O.Ekinci – Z.Alp | Open | 10 | +13.5 | +1.35 | +1.80 |
| Round 2 | M.Nowosadzki | F.Piedra – I.Saesseli | Open | 10 | +1.3 | +0.13 | +2.20 |
| Round 3 | M.Nowosadzki | A.Zack Efraimsson – B.Efraimsson | Closed | 10 | +8.7 | +0.87 | +0.80 |
| Round 5 | M.Nowosadzki | V.Cornell – M.Cornell | Open | 10 | +1.7 | +0.17 | -1.10 |
| Round 6 | M.Nowosadzki | A.Sarniak – J.Blass | Open | 10 | -2.0 | -0.20 | +0.00 |
| Round 8 | M.Nowosadzki | M.Cuzzi – A.Versace | Closed | 10 | +18.2 | +1.82 | +3.70 |
| Round 9 | M.Nowosadzki | S.Wernle – J.Smederevac | Open | 10 | +8.5 | +0.85 | +1.80 |
| Round 10 | M.Nowosadzki | I.Gronkvist – R.Van Prooijen | Closed | 10 | -20.8 | -2.08 | -3.00 |
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 |
|---|---|---|---|---|---|---|---|
| +10.6 | Round 1 | KANDEMIR | 1 | 6NT | ♠5 | -2 | +11 |
| +10.6 | Round 9 | MICROCHIROPTERA | 21 | 4♠x | ♣K | -3 | +12 |
| +10.0 | Round 10 | WILSON | 8 | 7♥ | ♣7 | = | +0 |
| +9.1 | Round 3 | SWEDEN MIXED TEAM | 22 | 5♥ | ♣8 | -1 | +12 |
| +8.9 | Round 6 | PSZCZOLA | 26 | 3NT | ♠9 | = | -1 |
| +8.4 | Round 1 | KANDEMIR | 7 | 4♥ | ♣7 | = | +0 |
| +8.0 | Round 10 | WILSON | 1 | 6♣ | ♠3 | = | +0 |
| +7.5 | Round 8 | CALANDRA | 13 | 4♠ | ♠A | = | +15 |
| +6.8 | Round 2 | ZEN | 16 | 3NT | ♥3 | = | +11 |
| +6.5 | Round 5 | CORNELL JACOB NZ | 17 | 2♥ | ♥7 | -1 | +10 |
| +6.4 | Round 2 | ZEN | 18 | 4♥ | ♣7 | -1 | -2 |
| +6.4 | Round 6 | PSZCZOLA | 29 | 3♦ | ♣9 | +1 | +11 |
| +6.0 | Round 8 | CALANDRA | 19 | 4♦ | ♥A | +1 | +8 |
| +5.7 | Round 6 | PSZCZOLA | 22 | 5♦ | ♥K | -1 | +12 |
| +5.2 | Round 8 | CALANDRA | 16 | 4♠ | ♥K | -1 | +6 |
| +5.0 | Round 5 | CORNELL JACOB NZ | 13 | 2♥ | ♦10 | +1 | +7 |
| +3.9 | Round 1 | KANDEMIR | 2 | 3NT | ♠A | -2 | +11 |
| +3.9 | Round 3 | SWEDEN MIXED TEAM | 30 | 3♥ | ♣K | = | +1 |
| +3.7 | Round 9 | MICROCHIROPTERA | 28 | 4♥ | ♥3 | -1 | +5 |
| +3.3 | Round 5 | CORNELL JACOB NZ | 18 | 3NT | ♣J | -1 | +5 |
| +3.1 | Round 5 | CORNELL JACOB NZ | 15 | 4♥ | ♣8 | +1 | +0 |
| +3.0 | Round 6 | PSZCZOLA | 28 | 3NT | ♠9 | = | +0 |
| +2.6 | Round 9 | MICROCHIROPTERA | 25 | 2♥ | ♠9 | = | +5 |
| +2.5 | Round 9 | MICROCHIROPTERA | 30 | 4♥ | ♦A | +1 | +0 |
| +2.0 | Round 8 | CALANDRA | 20 | 5♠ | ♦6 | +1 | +1 |
| +1.8 | Round 3 | SWEDEN MIXED TEAM | 21 | 5♣ | ♣7 | -1 | +5 |
| +1.8 | Round 3 | SWEDEN MIXED TEAM | 27 | 4♣ | ♣8 | -1 | +5 |
| +1.8 | Round 6 | PSZCZOLA | 24 | 3NT | ♣7 | = | -1 |
| +1.8 | Round 10 | WILSON | 6 | 2♠ | ♦8 | = | +0 |
| +1.7 | Round 1 | KANDEMIR | 9 | 3NT | ♠8 | = | -1 |
| +1.5 | Round 5 | CORNELL JACOB NZ | 19 | 3NT | ♦5 | +3 | -11 |
| +1.4 | Round 2 | ZEN | 11 | 4♥ | ♠4 | = | +3 |
| +1.1 | Round 1 | KANDEMIR | 8 | 3♣ | ♠6 | +2 | +0 |
| +1.1 | Round 8 | CALANDRA | 18 | 4♠ | ♠6 | +1 | +11 |
| +1.0 | Round 6 | PSZCZOLA | 23 | 5♥x | ♠3 | -1 | +0 |
| +1.0 | Round 10 | WILSON | 2 | 1NT | ♥Q | -1 | -3 |
| +0.9 | Round 2 | ZEN | 20 | 1NT | ♠3 | +2 | +1 |
| +0.9 | Round 9 | MICROCHIROPTERA | 22 | 4♠ | ♣K | = | +0 |
| +0.8 | Round 8 | CALANDRA | 11 | 2♠ | ♠J | -1 | -2 |
| +0.8 | Round 8 | CALANDRA | 17 | 4♠ | ♠5 | +1 | +0 |
| +0.7 | Round 1 | KANDEMIR | 5 | 3♣ | ♦7 | = | +0 |
| +0.4 | Round 1 | KANDEMIR | 10 | 4♠ | ♥4 | +2 | -13 |
| +0.2 | Round 2 | ZEN | 14 | 4♠ | ♥K | +1 | +0 |
| +0.1 | Round 1 | KANDEMIR | 4 | 3♥ | ♣J | = | +11 |
| -0.3 | Round 5 | CORNELL JACOB NZ | 11 | 4♠ | ♦8 | +1 | +0 |
| -0.3 | Round 6 | PSZCZOLA | 27 | 1NT | ♥6 | +1 | +0 |
| -0.5 | Round 3 | SWEDEN MIXED TEAM | 28 | 3♣ | ♥K | = | -1 |
| -0.8 | Round 9 | MICROCHIROPTERA | 26 | 2♦ | ♦8 | +1 | +0 |
| -1.0 | Round 2 | ZEN | 19 | 4♠x | ♣K | -3 | +3 |
| -1.1 | Round 3 | SWEDEN MIXED TEAM | 25 | 2NT | ♥4 | = | -7 |
| -1.1 | Round 5 | CORNELL JACOB NZ | 12 | 4♠ | ♣6 | -2 | -8 |
| -1.1 | Round 8 | CALANDRA | 14 | 4♣ | ♥8 | = | +0 |
| -1.2 | Round 3 | SWEDEN MIXED TEAM | 26 | 1NT | ♠5 | +2 | -1 |
| -1.2 | Round 5 | CORNELL JACOB NZ | 16 | 1NT | ♦9 | +1 | +0 |
| -1.2 | Round 9 | MICROCHIROPTERA | 23 | 3NT | ♠5 | +2 | +0 |
| -1.4 | Round 2 | ZEN | 17 | 4♥ | ♣K | +1 | +0 |
| -1.4 | Round 3 | SWEDEN MIXED TEAM | 29 | 2♥ | ♦9 | -1 | +1 |
| -1.5 | Round 3 | SWEDEN MIXED TEAM | 24 | 4♠ | ♦6 | -1 | +2 |
| -1.6 | Round 9 | MICROCHIROPTERA | 24 | 3NT | ♦3 | -1 | -5 |
| -1.7 | Round 10 | WILSON | 9 | 3♣ | ♦Q | = | +0 |
| -2.0 | Round 8 | CALANDRA | 15 | 2♥ | ♦K | = | +0 |
| -2.1 | Round 8 | CALANDRA | 12 | 3NT | ♥5 | +3 | -2 |
| -2.2 | Round 3 | SWEDEN MIXED TEAM | 23 | 4♠ | ♥3 | +2 | -9 |
| -2.6 | Round 9 | MICROCHIROPTERA | 29 | 3♦ | ♥8 | -1 | +1 |
| -3.0 | Round 1 | KANDEMIR | 6 | 3NT | ♠2 | = | +13 |
| -3.4 | Round 2 | ZEN | 13 | 6♠ | ♦8 | = | +0 |
| -3.6 | Round 10 | WILSON | 7 | 2♠ | ♣J | -3 | -5 |
| -4.3 | Round 2 | ZEN | 12 | 6♠ | ♥9 | = | +11 |
| -4.3 | Round 2 | ZEN | 15 | 3NT | ♠3 | -1 | -5 |
| -5.5 | Round 10 | WILSON | 4 | 5♣ | ♦2 | +1 | +13 |
| -5.6 | Round 9 | MICROCHIROPTERA | 27 | 7♠ | ♣9 | = | +0 |
| -6.1 | Round 5 | CORNELL JACOB NZ | 14 | 5♣x | ♠A | -2 | -5 |
| -6.1 | Round 10 | WILSON | 3 | 4♥ | ♣Q | = | -10 |
| -8.5 | Round 6 | PSZCZOLA | 25 | 4♥ | ♣8 | = | -11 |
| -8.8 | Round 10 | WILSON | 5 | 1NTx | ♥K | -2 | -9 |
| -9.0 | Round 5 | CORNELL JACOB NZ | 20 | 3♠ | ♥A | +2 | -9 |
| -9.1 | Round 6 | PSZCZOLA | 30 | 6♣ | ♠10 | -1 | -10 |
| -10.4 | Round 1 | KANDEMIR | 3 | 6♥ | ♠5 | -1 | -14 |
| -10.9 | Round 6 | PSZCZOLA | 21 | 6♠ | ♣8 | = | +0 |
| -15.9 | Round 10 | WILSON | 10 | 6♦ | ♥10 | -7 | -16 |