JASSEM Krzysztof · MAZURKIEWICZ
5rank
+54.9Butler · 84 bds
+0.65per board
±5.0swing
+0.58vs par /bd · #9/36
+0.57adjusted /bd
by round
vs par split: bidding +0.39 · play +0.07
Strength of schedule: opponents averaged -0.08/bd (an easy draw) → opponent-adjusted +0.57/bd
Card play — on target: opening leads 65.2% #34 of 36 · declarer play 70.0% #27 of 36 · defence 90.5% #21 of 36
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 75.0% (4) | 63.2% (19) |
| Declarer play | 42.9% (7) | 84.6% (13) |
| Defence | 80.0% (10) | 93.8% (32) |
Opening leads by suit led: ♠ 57.1% (7) · ♥ 0.0% (1) · ♦ 80.0% (5) · ♣ 70.0% (10)
vs par by strain: NT -0.22 (23) · a suit +0.72 (60)
vs par by level: part-score -0.48 (25) · game +0.67 (54) · slam +3.50 (4)
By role: declaring +0.83/bd (-1.09 vs par · 42) · defending +0.48/bd (+2.26 vs par · 42)
By vulnerability: vulnerable +0.69/bd (+1.69 vs par · 42) · not vulnerable +0.62/bd (-0.52 vs par · 42)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round of 16 | M.Mazurkiewicz | J.Mahaffey – T.Forrester | Open | 14 | +19.0 | +1.36 | -1.00 |
| Quarterfinal | M.Mazurkiewicz | A.Dubinin – A.Gromov | Open | 14 | -17.6 | -1.26 | -0.21 |
| Quarterfinal | M.Mazurkiewicz | A.Dubinin – A.Gromov | Open | 14 | +37.6 | +2.69 | +2.00 |
| Semifinal | M.Mazurkiewicz | D.Padon – A.Birman | Open | 14 | -3.9 | -0.28 | -1.14 |
| Final | M.Mazurkiewicz | R.Zaleski – B.Garozzo | Open | 14 | -9.0 | -0.64 | -0.21 |
| Final | M.Mazurkiewicz | M.Avossa – R.Intonti | Open | 14 | +28.8 | +2.06 | +4.07 |
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 |
|---|---|---|---|---|---|---|---|
| +13.6 | Quarterfinal | APOLLOSOYUZ | 21 | 7♥xx | ♠3 | = | +12 |
| +13.4 | Quarterfinal | APOLLOSOYUZ | 28 | 6♥ | ♦K | -1 | +13 |
| +12.6 | Quarterfinal | APOLLOSOYUZ | 22 | 5♣x | ♦7 | = | +10 |
| +12.0 | Final | BRENO | 15 | 5♥ | ♠A | -2 | +11 |
| +10.7 | Final | BRENO | 25 | 4♥ | ♣A | = | +13 |
| +10.3 | Quarterfinal | APOLLOSOYUZ | 20 | 5♦x | ♣A | -2 | +8 |
| +9.3 | Quarterfinal | APOLLOSOYUZ | 8 | 4♥ | ♠A | -1 | +11 |
| +9.2 | Round of 16 | MAHAFFEY | 2 | 5♠x | ♦K | -3 | +7 |
| +7.5 | Round of 16 | MAHAFFEY | 7 | 3NT | ♠3 | +1 | +10 |
| +5.7 | Round of 16 | MAHAFFEY | 4 | 3♦ | ♣2 | -1 | +12 |
| +5.7 | Semifinal | ISRMANY | 7 | 5♦ | ♠4 | -1 | -1 |
| +5.3 | Round of 16 | MAHAFFEY | 1 | 4♥ | ♦9 | = | +0 |
| +4.9 | Quarterfinal | APOLLOSOYUZ | 26 | 4♥ | ♦10 | = | +3 |
| +4.7 | Final | BRENO | 21 | 4♦ | ♠A | -1 | +5 |
| +4.7 | Final | BRENO | 27 | 4♠ | ♣2 | -2 | +7 |
| +4.0 | Quarterfinal | APOLLOSOYUZ | 23 | 2♠ | ♠9 | = | +1 |
| +3.7 | Quarterfinal | APOLLOSOYUZ | 6 | 5♥x | ♠9 | -1 | +12 |
| +3.7 | Final | BRENO | 10 | 4♠ | = | +0 | |
| +3.7 | Final | BRENO | 18 | A♦JPassEN | ♣2 | +11 | |
| +3.0 | Semifinal | ISRMANY | 3 | 3♣ | ♠8 | -1 | +5 |
| +2.7 | Final | BRENO | 1 | 4♠x | ♦K | -2 | +4 |
| +2.1 | Round of 16 | MAHAFFEY | 11 | 4♠ | ♣A | = | +0 |
| +2.0 | Semifinal | ISRMANY | 13 | 5♦x | ♠A | -1 | +2 |
| +1.9 | Round of 16 | MAHAFFEY | 10 | 4♥ | ♠3 | +1 | +0 |
| +1.8 | Quarterfinal | APOLLOSOYUZ | 14 | 4♠ | ♥4 | +1 | -8 |
| +1.7 | Round of 16 | MAHAFFEY | 3 | 3♠ | ♦K | -1 | -2 |
| +1.7 | Quarterfinal | APOLLOSOYUZ | 16 | 4♥ | ♣6 | = | -1 |
| +1.2 | Round of 16 | MAHAFFEY | 13 | 2♥ | ♦Q | = | +1 |
| +1.0 | Quarterfinal | APOLLOSOYUZ | 15 | 2NT | ♠7 | = | +0 |
| +1.0 | Semifinal | ISRMANY | 4 | 2♥ | ♦A | -1 | +5 |
| +1.0 | Semifinal | ISRMANY | 10 | 3NT | ♠5 | +1 | +0 |
| +0.9 | Round of 16 | MAHAFFEY | 12 | 4♥ | ♦5 | +3 | -10 |
| +0.7 | Final | BRENO | 5 | 4♠ | ♥K | +2 | -11 |
| +0.7 | Final | BRENO | 6 | 3NT | ♦Q | +1 | +11 |
| +0.7 | Final | BRENO | 24 | 3NT | ♣A | -2 | +5 |
| +0.6 | Quarterfinal | APOLLOSOYUZ | 17 | 2♥ | ♣A | -2 | +0 |
| +0.5 | Round of 16 | MAHAFFEY | 5 | 1NT | ♥3 | +1 | -7 |
| +0.4 | Quarterfinal | APOLLOSOYUZ | 1 | 4♥ | ♦2 | +2 | +1 |
| +0.3 | Round of 16 | MAHAFFEY | 14 | 4♥ | ♠A | = | +0 |
| +0.3 | Final | BRENO | 4 | 4♣ | ♦7 | +1 | -1 |
| +0.3 | Final | BRENO | 7 | 4♠ | ♥A | -1 | -6 |
| +0.3 | Final | BRENO | 9 | 2♦ | ♦4 | +1 | +0 |
| +0.3 | Final | BRENO | 11 | 3NT | ♠5 | = | +0 |
| +0.3 | Final | BRENO | 20 | 1NT | ♥6 | +1 | +0 |
| +0.1 | Quarterfinal | APOLLOSOYUZ | 25 | 4♥ | ♦8 | = | +0 |
| +0.0 | Semifinal | ISRMANY | 8 | 4♠ | ♦8 | = | +0 |
| +0.0 | Semifinal | ISRMANY | 14 | 4♥ | ♣A | -1 | -2 |
| -0.0 | Final | BRENO | 3 | 3NT | ♠6 | +2 | +0 |
| -0.0 | Final | BRENO | 13 | 3NT | ♣2 | +3 | +13 |
| -0.0 | Final | BRENO | 16 | 3NT | ♣7 | = | -1 |
| -0.0 | Final | BRENO | 19 | 4♥ | ♣K | = | +0 |
| -0.0 | Final | BRENO | 22 | 3♦ | ♠J | +1 | +0 |
| -0.0 | Final | BRENO | 23 | 3NT | ♣2 | +2 | +13 |
| -0.1 | Quarterfinal | APOLLOSOYUZ | 13 | 4♥ | ♠6 | = | +0 |
| -0.3 | Round of 16 | MAHAFFEY | 8 | 4♠ | ♦3 | = | -3 |
| -0.3 | Quarterfinal | APOLLOSOYUZ | 4 | 4♠ | ♣5 | +1 | +0 |
| -0.3 | Semifinal | ISRMANY | 1 | 6NT | ♠2 | = | -11 |
| -0.3 | Semifinal | ISRMANY | 2 | 4♠x | ♦T | -2 | +5 |
| -0.3 | Semifinal | ISRMANY | 6 | 4♠ | ♥4 | +1 | -10 |
| -0.3 | Final | BRENO | 26 | 3NT | ♠3 | = | -1 |
| -1.0 | Quarterfinal | APOLLOSOYUZ | 2 | 2♠ | ♣7 | +1 | +0 |
| -1.4 | Quarterfinal | APOLLOSOYUZ | 9 | 1NT | ♦8 | +1 | -1 |
| -1.6 | Quarterfinal | APOLLOSOYUZ | 7 | 4♣ | ♠6 | -1 | +5 |
| -1.7 | Semifinal | ISRMANY | 12 | 5♥x | ♠A | -2 | +0 |
| -2.0 | Semifinal | ISRMANY | 11 | 4♣ | ♥2 | = | +0 |
| -2.0 | Final | BRENO | 28 | 3♦ | ♠9 | +2 | -1 |
| -3.0 | Final | BRENO | 2 | 2NT | ♠3 | +2 | -2 |
| -3.0 | Final | BRENO | 12 | 1NT | ♠2 | -1 | -5 |
| -3.1 | Quarterfinal | APOLLOSOYUZ | 11 | 3NT | ♦3 | +1 | +0 |
| -3.1 | Quarterfinal | APOLLOSOYUZ | 12 | 4♥ | ♥J | +2 | -2 |
| -3.3 | Quarterfinal | APOLLOSOYUZ | 24 | 4♠ | ♣9 | +1 | +0 |
| -4.0 | Quarterfinal | APOLLOSOYUZ | 27 | 4♠ | ♦Q | -2 | -11 |
| -4.7 | Final | BRENO | 14 | 3NT | ♦4 | +3 | -1 |
| -5.4 | Quarterfinal | APOLLOSOYUZ | 3 | 3♠ | ♥2 | = | -10 |
| -5.7 | Final | BRENO | 17 | 5♣x | ♥K | -2 | -5 |
| -5.9 | Quarterfinal | APOLLOSOYUZ | 5 | 3NT | ♠4 | +3 | -11 |
| -6.0 | Semifinal | ISRMANY | 5 | 3♥ | ♥T | -1 | +1 |
| -6.0 | Semifinal | ISRMANY | 9 | 3NT | ♠3 | -1 | -10 |
| -6.5 | Round of 16 | MAHAFFEY | 6 | 3♦ | ♥3 | +2 | -10 |
| -7.3 | Quarterfinal | APOLLOSOYUZ | 19 | 2NT | ♥2 | -2 | -8 |
| -7.3 | Final | BRENO | 8 | 5♠x | ♣4 | = | -5 |
| -10.0 | Quarterfinal | APOLLOSOYUZ | 18 | 3NT | ♣K | = | +1 |
| -10.5 | Round of 16 | MAHAFFEY | 9 | 4♥ | ♦A | -1 | -12 |
| -10.9 | Quarterfinal | APOLLOSOYUZ | 10 | 6♠ | ♠5 | = | +0 |