🇵🇱 ZAK Piotr · POLAND
21rank
+37.9Butler · 112 bds
+0.34per board
±3.8swing
+0.32vs par /bd · #26/86
+0.11adjusted /bd
by round
vs par split: bidding -0.15 · play +0.47
Strength of schedule: opponents averaged -0.23/bd (an easy draw) → opponent-adjusted +0.11/bd
Card play — on target: opening leads 73.5% #79 of 86 · declarer play 70.6% #63 of 86 · defence 87.3% #21 of 86
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 72.7% (11) | 73.9% (23) |
| Declarer play | 66.7% (15) | 73.7% (19) |
| Defence | 88.9% (18) | 86.5% (37) |
Opening leads by suit led: ♠ 90.9% (11) · ♥ 55.6% (9) · ♦ 50.0% (2) · ♣ 75.0% (12)
vs par by strain: NT +0.37 (38) · a suit +0.30 (74)
vs par by level: part-score +0.09 (43) · game +0.48 (62) · slam +0.29 (7)
By role: declaring +0.04/bd (-2.19 vs par · 57) · defending +0.65/bd (+2.93 vs par · 55)
By vulnerability: vulnerable +0.33/bd (+0.05 vs par · 56) · not vulnerable +0.35/bd (+0.59 vs par · 56)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | J.Zaremba | M.Lara – M.D'Orey Capucho | Closed | 16 | -2.9 | -0.18 | -0.50 |
| Round 3 | J.Zaremba | A.Lindermann – C.Terraneo | Open | 16 | +12.5 | +0.78 | +0.50 |
| Round 4 | J.Zaremba | S.Ahamed – D.Hanzala | Closed | 16 | +9.9 | +0.62 | +0.81 |
| Round 8 | J.Zaremba | S.Tamagnini – G.Parri | Open | 16 | +17.9 | +1.12 | -0.06 |
| Round 12 | J.Zaremba | D.Nikolayenko – G.Rybnikov | Closed | 16 | -22.8 | -1.43 | -1.69 |
| Round 14 | J.Zaremba | F.Liaqat – J.Said | Closed | 16 | +20.2 | +1.26 | +2.19 |
| Round 15 | J.Zaremba | S.Yang – P.Huang | Open | 16 | +3.1 | +0.19 | +1.00 |
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 |
|---|---|---|---|---|---|---|---|
| +11.8 | Round 14 | 🇵🇰 PAKISTAN | 21 | 3NT | ♣5 | -1 | +16 |
| +8.5 | Round 15 | 🇹🇼 CHINESE TAIPEI | 16 | 3NT | ♥3 | = | +11 |
| +8.1 | Round 14 | 🇵🇰 PAKISTAN | 23 | 6♥ | ♣6 | -2 | +13 |
| +8.0 | Round 8 | 🇸🇲 SAN MARINO | 30 | 4♥ | ♠J | +1 | +4 |
| +7.2 | Round 3 | 🇦🇹 AUSTRIA | 14 | 6♥ | ♣10 | = | -9 |
| +7.1 | Round 1 | 🇵🇹 PORTUGAL | 6 | 3♥ | ♠A | -2 | +11 |
| +6.7 | Round 4 | 🇧🇩 BANGLADESH | 30 | 6♦ | ♥J | -2 | +11 |
| +6.2 | Round 8 | 🇸🇲 SAN MARINO | 25 | 3♠ | ♦5 | -2 | +13 |
| +6.1 | Round 15 | 🇹🇼 CHINESE TAIPEI | 2 | 1♠x | ♥10 | -2 | +3 |
| +5.8 | Round 3 | 🇦🇹 AUSTRIA | 8 | 3NT | ♠8 | -3 | +7 |
| +5.8 | Round 14 | 🇵🇰 PAKISTAN | 26 | 3NT | ♥7 | +1 | +0 |
| +5.7 | Round 8 | 🇸🇲 SAN MARINO | 28 | 7♦ | ♠K | = | -2 |
| +5.6 | Round 1 | 🇵🇹 PORTUGAL | 2 | 3♦ | ♠3 | -2 | +8 |
| +5.5 | Round 4 | 🇧🇩 BANGLADESH | 24 | 3NT | ♠3 | +1 | +1 |
| +5.4 | Round 15 | 🇹🇼 CHINESE TAIPEI | 13 | 4♠ | ♣6 | +1 | +13 |
| +4.7 | Round 8 | 🇸🇲 SAN MARINO | 22 | 4♠ | ♥Q | = | +7 |
| +4.3 | Round 14 | 🇵🇰 PAKISTAN | 17 | 4♠ | ♥J | -1 | +5 |
| +4.2 | Round 8 | 🇸🇲 SAN MARINO | 31 | 5♣x | ♠7 | -4 | +5 |
| +4.1 | Round 15 | 🇹🇼 CHINESE TAIPEI | 3 | 1NT | ♥5 | -1 | -1 |
| +3.9 | Round 15 | 🇹🇼 CHINESE TAIPEI | 6 | 5♦x | ♥5 | -4 | +4 |
| +3.4 | Round 4 | 🇧🇩 BANGLADESH | 21 | 3♠ | ♠3 | = | +0 |
| +3.4 | Round 4 | 🇧🇩 BANGLADESH | 27 | 4♣ | ♠A | -1 | +10 |
| +3.2 | Round 1 | 🇵🇹 PORTUGAL | 4 | 3♣ | ♠3 | +1 | +0 |
| +3.2 | Round 3 | 🇦🇹 AUSTRIA | 2 | 4♥ | ♣A | -2 | +7 |
| +3.2 | Round 3 | 🇦🇹 AUSTRIA | 6 | 4♠x | ♥5 | -2 | +10 |
| +3.2 | Round 4 | 🇧🇩 BANGLADESH | 32 | 3♠ | ♥A | = | +0 |
| +2.8 | Round 3 | 🇦🇹 AUSTRIA | 11 | 3♠ | ♦6 | -1 | +5 |
| +2.7 | Round 3 | 🇦🇹 AUSTRIA | 9 | 3NT | ♠3 | -1 | +10 |
| +2.7 | Round 14 | 🇵🇰 PAKISTAN | 31 | 5♦x | ♣5 | -1 | +11 |
| +2.7 | Round 15 | 🇹🇼 CHINESE TAIPEI | 4 | 3♠ | ♣K | -3 | +14 |
| +2.6 | Round 3 | 🇦🇹 AUSTRIA | 3 | 4♣ | ♥Q | = | +0 |
| +2.5 | Round 4 | 🇧🇩 BANGLADESH | 22 | 2NT | ♥A | -2 | +1 |
| +2.3 | Round 8 | 🇸🇲 SAN MARINO | 32 | 3NT | ♠10 | = | +1 |
| +2.2 | Round 3 | 🇦🇹 AUSTRIA | 12 | 4♥ | ♣4 | +1 | +0 |
| +2.2 | Round 12 | 🇺🇦 UKRAINE | 28 | 2♦ | ♣Q | +2 | +7 |
| +1.8 | Round 8 | 🇸🇲 SAN MARINO | 21 | 1NT | ♦5 | = | +0 |
| +1.8 | Round 15 | 🇹🇼 CHINESE TAIPEI | 9 | 3NT | ♠8 | +2 | +0 |
| +1.7 | Round 14 | 🇵🇰 PAKISTAN | 25 | 3NT | ♥9 | +1 | +8 |
| +1.6 | Round 4 | 🇧🇩 BANGLADESH | 28 | 3♠ | ♠J | +1 | +1 |
| +1.5 | Round 4 | 🇧🇩 BANGLADESH | 31 | 1NT | ♠Q | -1 | +2 |
| +1.5 | Round 12 | 🇺🇦 UKRAINE | 17 | 4♠ | ♣Q | = | +0 |
| +1.5 | Round 12 | 🇺🇦 UKRAINE | 23 | 4♥ | ♥5 | = | +3 |
| +1.3 | Round 14 | 🇵🇰 PAKISTAN | 22 | 4♠ | ♥9 | = | +1 |
| +1.3 | Round 14 | 🇵🇰 PAKISTAN | 30 | 3NT | ♣6 | = | +11 |
| +1.3 | Round 15 | 🇹🇼 CHINESE TAIPEI | 14 | 2NT | ♥K | +1 | +6 |
| +1.0 | Round 1 | 🇵🇹 PORTUGAL | 12 | 4♠ | ♦K | +1 | +0 |
| +0.8 | Round 1 | 🇵🇹 PORTUGAL | 8 | 3NT | ♦5 | +1 | -1 |
| +0.8 | Round 1 | 🇵🇹 PORTUGAL | 10 | 3♥ | ♣3 | -1 | +0 |
| +0.8 | Round 12 | 🇺🇦 UKRAINE | 27 | 4♠ | ♠4 | +1 | +0 |
| +0.7 | Round 8 | 🇸🇲 SAN MARINO | 20 | 1NT | ♥8 | = | -1 |
| +0.6 | Round 1 | 🇵🇹 PORTUGAL | 15 | 3♥ | ♦8 | -1 | +0 |
| +0.4 | Round 1 | 🇵🇹 PORTUGAL | 11 | 1NT | ♥7 | +4 | +3 |
| +0.3 | Round 8 | 🇸🇲 SAN MARINO | 26 | 1NT | ♠4 | +2 | -1 |
| +0.3 | Round 12 | 🇺🇦 UKRAINE | 25 | 4♥ | ♦5 | = | -1 |
| +0.2 | Round 1 | 🇵🇹 PORTUGAL | 9 | 3NT | ♠J | +3 | -13 |
| +0.2 | Round 3 | 🇦🇹 AUSTRIA | 5 | 1NT | ♣6 | = | +11 |
| +0.2 | Round 15 | 🇹🇼 CHINESE TAIPEI | 10 | 4♥ | ♦Q | = | +0 |
| -0.0 | Round 4 | 🇧🇩 BANGLADESH | 20 | 4♥ | ♠K | +1 | +0 |
| -0.1 | Round 4 | 🇧🇩 BANGLADESH | 23 | 4♥ | ♣4 | = | +0 |
| -0.1 | Round 12 | 🇺🇦 UKRAINE | 29 | 4♠ | ♥4 | +1 | +0 |
| -0.2 | Round 12 | 🇺🇦 UKRAINE | 31 | 2♦ | ♣J | +2 | -11 |
| -0.4 | Round 1 | 🇵🇹 PORTUGAL | 13 | 4♠ | ♣A | -2 | -7 |
| -0.5 | Round 8 | 🇸🇲 SAN MARINO | 29 | 2♠ | ♦2 | +1 | -11 |
| -0.7 | Round 14 | 🇵🇰 PAKISTAN | 28 | 3NT | ♠5 | = | -1 |
| -0.7 | Round 14 | 🇵🇰 PAKISTAN | 29 | 3NT | ♥2 | -1 | -6 |
| -0.8 | Round 3 | 🇦🇹 AUSTRIA | 4 | 3♦ | ♠6 | +1 | +0 |
| -0.8 | Round 8 | 🇸🇲 SAN MARINO | 17 | 3♠ | ♥A | -2 | -1 |
| -0.8 | Round 12 | 🇺🇦 UKRAINE | 22 | 5♠ | ♣8 | +1 | -11 |
| -0.8 | Round 15 | 🇹🇼 CHINESE TAIPEI | 8 | 2♠ | ♣5 | = | +0 |
| -0.9 | Round 1 | 🇵🇹 PORTUGAL | 16 | 3♦ | ♥9 | -1 | -11 |
| -0.9 | Round 3 | 🇦🇹 AUSTRIA | 1 | 2♣ | ♣2 | = | -5 |
| -1.1 | Round 8 | 🇸🇲 SAN MARINO | 27 | 3NT | ♠6 | +1 | +1 |
| -1.1 | Round 14 | 🇵🇰 PAKISTAN | 19 | 4♠ | ♥7 | +2 | -1 |
| -1.2 | Round 8 | 🇸🇲 SAN MARINO | 18 | 4♠x | ♥A | -1 | +0 |
| -1.3 | Round 14 | 🇵🇰 PAKISTAN | 27 | 2♠ | ♦10 | +2 | -6 |
| -1.5 | Round 15 | 🇹🇼 CHINESE TAIPEI | 15 | 3♣ | ♠A | -1 | -1 |
| -1.7 | Round 3 | 🇦🇹 AUSTRIA | 10 | 2♥ | ♦8 | +1 | -10 |
| -1.7 | Round 4 | 🇧🇩 BANGLADESH | 25 | 4♥ | ♠8 | +1 | +11 |
| -1.8 | Round 1 | 🇵🇹 PORTUGAL | 14 | 1NT | ♣A | -3 | +0 |
| -1.8 | Round 14 | 🇵🇰 PAKISTAN | 18 | 1NT | ♥K | -2 | +1 |
| -1.9 | Round 4 | 🇧🇩 BANGLADESH | 19 | 5♣ | ♥Q | -1 | -2 |
| -1.9 | Round 12 | 🇺🇦 UKRAINE | 21 | 3NT | ♠6 | -2 | -7 |
| -1.9 | Round 12 | 🇺🇦 UKRAINE | 26 | 4♠ | ♦2 | +1 | +0 |
| -2.0 | Round 12 | 🇺🇦 UKRAINE | 30 | 3NT | ♣10 | +1 | +1 |
| -2.1 | Round 4 | 🇧🇩 BANGLADESH | 17 | 1NT | ♣K | = | -8 |
| -2.2 | Round 3 | 🇦🇹 AUSTRIA | 13 | 4♥ | ♦J | -2 | -8 |
| -2.8 | Round 12 | 🇺🇦 UKRAINE | 32 | 4♠ | ♣K | +1 | +0 |
| -2.9 | Round 3 | 🇦🇹 AUSTRIA | 16 | 2♠ | ♦A | -2 | -3 |
| -3.1 | Round 4 | 🇧🇩 BANGLADESH | 18 | 3♣ | ♦7 | -1 | -4 |
| -3.1 | Round 8 | 🇸🇲 SAN MARINO | 19 | 2NT | ♥3 | -1 | -10 |
| -3.1 | Round 12 | 🇺🇦 UKRAINE | 18 | 5♥ | ♠A | -1 | +3 |
| -3.2 | Round 14 | 🇵🇰 PAKISTAN | 24 | 4♠ | ♥J | -1 | -4 |
| -3.3 | Round 14 | 🇵🇰 PAKISTAN | 20 | 3NT | ♦7 | -1 | -5 |
| -3.5 | Round 1 | 🇵🇹 PORTUGAL | 3 | 6♦ | ♠A | +1 | +11 |
| -4.0 | Round 15 | 🇹🇼 CHINESE TAIPEI | 12 | 2♦ | ♣K | -2 | -6 |
| -4.2 | Round 4 | 🇧🇩 BANGLADESH | 29 | 2NT | ♠J | = | +0 |
| -4.4 | Round 3 | 🇦🇹 AUSTRIA | 15 | 4♥ | ♠A | -1 | -5 |
| -4.5 | Round 3 | 🇦🇹 AUSTRIA | 7 | 2♥ | ♦A | -2 | -2 |
| -4.5 | Round 8 | 🇸🇲 SAN MARINO | 24 | 3NT | ♣2 | +1 | +0 |
| -4.5 | Round 12 | 🇺🇦 UKRAINE | 20 | 3NT | ♣5 | = | +0 |
| -4.5 | Round 15 | 🇹🇼 CHINESE TAIPEI | 7 | 4♠ | ♣J | = | +0 |
| -4.5 | Round 15 | 🇹🇼 CHINESE TAIPEI | 11 | 5♦ | ♠2 | = | -9 |
| -4.7 | Round 14 | 🇵🇰 PAKISTAN | 32 | 4♥ | ♣A | -2 | -8 |
| -4.8 | Round 1 | 🇵🇹 PORTUGAL | 7 | 4♠ | ♣A | -2 | -7 |
| -4.8 | Round 4 | 🇧🇩 BANGLADESH | 26 | 3NT | ♥4 | = | -10 |
| -4.8 | Round 8 | 🇸🇲 SAN MARINO | 23 | 4♥ | ♦A | -1 | -6 |
| -5.0 | Round 1 | 🇵🇹 PORTUGAL | 1 | 3NT | ♥6 | +1 | +10 |
| -5.3 | Round 12 | 🇺🇦 UKRAINE | 24 | 6NT | ♥6 | -2 | -11 |
| -5.4 | Round 15 | 🇹🇼 CHINESE TAIPEI | 1 | 4♠ | ♠A | = | -7 |
| -6.2 | Round 1 | 🇵🇹 PORTUGAL | 5 | 3NT | ♥6 | = | -12 |
| -6.5 | Round 12 | 🇺🇦 UKRAINE | 19 | 4♥ | ♠7 | = | +0 |
| -10.2 | Round 15 | 🇹🇼 CHINESE TAIPEI | 5 | 6♥ | ♦10 | -1 | -11 |