KOWALSKI Robert · GAYET
650rank
-58.0Butler · 100 bds
-0.58per board
±4.1swing
-0.20vs par /bd · #443/695
-0.55adjusted /bd
by round
vs par split: bidding -0.76 · play +0.58
Strength of schedule: opponents averaged +0.03/bd (an average draw) → opponent-adjusted -0.55/bd
Card play — on target: opening leads 65.6% #668 of 694 · declarer play 76.3% #294 of 694 · defence 81.8% #440 of 695
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 63.6% (11) | 66.7% (21) |
| Declarer play | 66.7% (9) | 79.3% (29) |
| Defence | 61.5% (13) | 90.3% (31) |
Opening leads by suit led: ♠ 53.8% (13) · ♥ 66.7% (6) · ♦ 66.7% (6) · ♣ 85.7% (7)
vs par by strain: NT -0.16 (25) · a suit -0.21 (75)
vs par by level: part-score -0.98 (44) · game +0.62 (50) · slam -1.33 (6)
By role: declaring -0.69/bd (-2.64 vs par · 56) · defending -0.44/bd (+2.91 vs par · 44)
By vulnerability: vulnerable -0.88/bd (-1.18 vs par · 49) · not vulnerable -0.30/bd (+0.74 vs par · 51)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | D.Imbert | G.Paulissen – J.Jansma | Open | 10 | +9.7 | +0.97 | +0.50 |
| Round 3 | D.Imbert | J.Hidskes – W.De Jong | Closed | 10 | -11.7 | -1.17 | -1.10 |
| Round 5 | D.Imbert | H.Kreuning – S.Ouda | Closed | 10 | -6.0 | -0.60 | -1.40 |
| Round 6 | D.Imbert | P.Van Der Stap – R.Dankers | Closed | 10 | -24.0 | -2.40 | -3.00 |
| Round 8 | D.Imbert | O.Gelling – E.Jeurissen | Open | 10 | -9.6 | -0.96 | -3.40 |
| Round 9 | D.Imbert | N.Verhoeve – L.Velthuizen | Closed | 10 | -4.8 | -0.48 | +0.60 |
| Round 11 | D.Imbert | R.Verdonk – L.Dekker | Closed | 10 | -8.9 | -0.89 | +2.80 |
| Round 12 | D.Imbert | P.Correa – S.Mello | Closed | 10 | -5.8 | -0.58 | +4.70 |
| Round 13 | F.Pigeaud | P.Mathieu – S.De Muller | Closed | 10 | -1.5 | -0.15 | -1.20 |
| Round 15 | F.Pigeaud | R.Mulder – H.Everts | Closed | 10 | +4.6 | +0.46 | -0.50 |
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 |
|---|---|---|---|---|---|---|---|
| +7.6 | Round 11 | 2 KLAVEREN | 17 | 4♥ | ♣4 | = | +8 |
| +7.4 | Round 11 | 2 KLAVEREN | 18 | 4♣ | ♠A | -1 | +10 |
| +6.9 | Round 3 | HRG NEDERLAND | 28 | 5♠x | ♦5 | = | +6 |
| +6.9 | Round 13 | FERLEMA | 7 | 4♠ | ♥K | -1 | +6 |
| +6.6 | Round 9 | VAN DEN HOEK | 21 | 3♦x | ♦4 | -2 | +8 |
| +6.3 | Round 8 | DE MIJNSTREEK | 18 | 5♥x | ♣Q | -2 | +8 |
| +6.2 | Round 1 | HET WITTE 1 | 10 | 4♠ | ♥K | -1 | +6 |
| +5.2 | Round 9 | VAN DEN HOEK | 30 | 3NT | ♠4 | = | +0 |
| +4.9 | Round 11 | 2 KLAVEREN | 11 | 4NT | ♦10 | +2 | +11 |
| +4.1 | Round 12 | RIO | 23 | 3♥ | ♠7 | +1 | +10 |
| +3.5 | Round 5 | NDC DEN HOMMEL | 19 | 6♣ | ♣5 | -1 | +10 |
| +3.5 | Round 6 | DELFT BREW | 22 | 2NT | ♥3 | -2 | +11 |
| +3.5 | Round 12 | RIO | 25 | 3♦ | ♥Q | = | +7 |
| +3.3 | Round 1 | HET WITTE 1 | 1 | 3♦ | ♣A | = | +0 |
| +3.2 | Round 1 | HET WITTE 1 | 2 | 3♥ | ♠7 | = | +7 |
| +3.1 | Round 12 | RIO | 22 | 1♥ | ♦10 | = | +5 |
| +3.1 | Round 12 | RIO | 29 | 6NT | ♠10 | +1 | +13 |
| +3.0 | Round 1 | HET WITTE 1 | 9 | 2♥ | ♣2 | = | +0 |
| +2.9 | Round 13 | FERLEMA | 2 | 3♠ | ♥2 | -1 | +10 |
| +2.4 | Round 9 | VAN DEN HOEK | 29 | 4♥ | ♥J | +2 | +1 |
| +2.4 | Round 13 | FERLEMA | 5 | 3NT | ♦J | +2 | +1 |
| +2.3 | Round 11 | 2 KLAVEREN | 13 | 4♥ | ♦5 | +1 | +0 |
| +2.2 | Round 8 | DE MIJNSTREEK | 19 | 3♦ | ♥K | -1 | -2 |
| +2.2 | Round 15 | COPPENS | 23 | 5♣ | ♣10 | -1 | +6 |
| +2.1 | Round 1 | HET WITTE 1 | 8 | 3♦ | ♠A | = | -1 |
| +1.7 | Round 9 | VAN DEN HOEK | 24 | 3♠ | ♦3 | -2 | +5 |
| +1.6 | Round 9 | VAN DEN HOEK | 27 | 3NT | ♥A | = | +3 |
| +1.4 | Round 1 | HET WITTE 1 | 6 | 3♣ | ♠A | +2 | -10 |
| +1.3 | Round 5 | NDC DEN HOMMEL | 14 | 2♠ | ♥A | -2 | +0 |
| +1.3 | Round 15 | COPPENS | 21 | 5♣x | ♥A | -3 | +4 |
| +1.2 | Round 15 | COPPENS | 27 | 4♠ | ♦K | = | -1 |
| +1.2 | Round 15 | COPPENS | 30 | 3NT | ♣7 | = | -2 |
| +1.1 | Round 8 | DE MIJNSTREEK | 11 | 3♣ | ♦2 | +1 | +0 |
| +1.0 | Round 11 | 2 KLAVEREN | 20 | 4♠ | ♣3 | +2 | +12 |
| +1.0 | Round 13 | FERLEMA | 9 | 3NT | ♠6 | +3 | -12 |
| +1.0 | Round 15 | COPPENS | 29 | 4♠ | ♥A | +1 | +0 |
| +0.9 | Round 5 | NDC DEN HOMMEL | 12 | 4♥ | ♦2 | +2 | +1 |
| +0.7 | Round 3 | HRG NEDERLAND | 27 | 1NT | ♣9 | +2 | +0 |
| +0.7 | Round 13 | FERLEMA | 6 | 2♥ | ♦4 | +1 | +7 |
| +0.6 | Round 1 | HET WITTE 1 | 4 | 4♥ | ♠4 | +2 | +13 |
| +0.6 | Round 3 | HRG NEDERLAND | 26 | 2♠ | ♠K | -2 | -2 |
| +0.6 | Round 9 | VAN DEN HOEK | 22 | 4♥ | ♠Q | = | +1 |
| +0.3 | Round 3 | HRG NEDERLAND | 29 | 2♠ | ♣K | -1 | -1 |
| +0.1 | Round 15 | COPPENS | 24 | 4♠ | ♦A | = | -1 |
| -0.0 | Round 11 | 2 KLAVEREN | 19 | 3NT | ♥3 | +1 | +11 |
| -0.0 | Round 13 | FERLEMA | 10 | 1♠ | ♠Q | +2 | -10 |
| -0.1 | Round 5 | NDC DEN HOMMEL | 16 | 4♥ | ♠7 | +2 | -1 |
| -0.1 | Round 6 | DELFT BREW | 27 | 3♣ | ♠Q | +1 | -7 |
| -0.2 | Round 15 | COPPENS | 26 | 4♠ | ♣J | = | +0 |
| -0.3 | Round 1 | HET WITTE 1 | 5 | 3♣ | ♥A | +2 | +1 |
| -0.3 | Round 5 | NDC DEN HOMMEL | 11 | 4♠ | ♠10 | = | +0 |
| -0.5 | Round 8 | DE MIJNSTREEK | 15 | 4♠ | ♠2 | +1 | +0 |
| -0.5 | Round 15 | COPPENS | 28 | 4♠ | ♥A | +1 | +0 |
| -0.6 | Round 9 | VAN DEN HOEK | 28 | 5♥ | ♠K | +1 | +12 |
| -0.6 | Round 15 | COPPENS | 25 | 3♠ | ♦K | +1 | -10 |
| -0.7 | Round 3 | HRG NEDERLAND | 30 | 3NT | ♠6 | -1 | +2 |
| -0.7 | Round 12 | RIO | 30 | 5♣ | ♦3 | +1 | +11 |
| -0.8 | Round 3 | HRG NEDERLAND | 24 | 2♠ | ♥9 | -1 | +2 |
| -0.8 | Round 6 | DELFT BREW | 23 | 4♥ | ♥5 | = | +1 |
| -0.9 | Round 6 | DELFT BREW | 24 | 2♥x | ♠Q | -2 | +3 |
| -1.1 | Round 8 | DE MIJNSTREEK | 12 | 5♥x | ♣K | -2 | -4 |
| -1.1 | Round 15 | COPPENS | 22 | 4♠ | ♥2 | +1 | -1 |
| -1.2 | Round 8 | DE MIJNSTREEK | 17 | 2♠ | ♥J | -1 | -5 |
| -1.3 | Round 3 | HRG NEDERLAND | 21 | 3NT | ♥Q | = | +0 |
| -1.3 | Round 5 | NDC DEN HOMMEL | 20 | 3♠ | ♦A | -2 | -9 |
| -1.4 | Round 5 | NDC DEN HOMMEL | 18 | 2♥ | ♦4 | -1 | +2 |
| -1.5 | Round 12 | RIO | 26 | 3♦ | ♣A | +1 | +0 |
| -1.5 | Round 12 | RIO | 27 | 4♥ | ♣10 | +1 | +0 |
| -1.8 | Round 12 | RIO | 21 | 3NT | ♦5 | +3 | +12 |
| -2.1 | Round 3 | HRG NEDERLAND | 25 | 4♦ | ♠5 | = | +0 |
| -2.2 | Round 13 | FERLEMA | 1 | 3NT | ♠3 | +3 | -1 |
| -2.3 | Round 5 | NDC DEN HOMMEL | 17 | 4♣ | ♦Q | -1 | -4 |
| -2.3 | Round 8 | DE MIJNSTREEK | 13 | 4♥ | ♦7 | +1 | -4 |
| -2.4 | Round 13 | FERLEMA | 3 | 2♥ | ♠A | -1 | -5 |
| -2.5 | Round 6 | DELFT BREW | 28 | 3♣ | ♦7 | -2 | -5 |
| -2.6 | Round 3 | HRG NEDERLAND | 22 | 3♦ | ♠J | -1 | -5 |
| -2.9 | Round 1 | HET WITTE 1 | 7 | 3NT | ♠8 | +1 | -1 |
| -2.9 | Round 6 | DELFT BREW | 30 | 2NT | ♠4 | -1 | -4 |
| -3.0 | Round 5 | NDC DEN HOMMEL | 15 | 6NT | ♣2 | = | +0 |
| -3.2 | Round 9 | VAN DEN HOEK | 25 | 4♥ | ♣10 | -1 | -5 |
| -3.2 | Round 13 | FERLEMA | 4 | 1NT | ♠J | = | -6 |
| -3.3 | Round 5 | NDC DEN HOMMEL | 13 | 4♠ | ♣A | +2 | -13 |
| -3.4 | Round 8 | DE MIJNSTREEK | 14 | 3NT | ♣4 | -2 | -5 |
| -4.3 | Round 8 | DE MIJNSTREEK | 16 | 4♥ | ♠Q | -2 | -12 |
| -4.3 | Round 11 | 2 KLAVEREN | 16 | 3♦ | ♠J | +3 | +7 |
| -4.6 | Round 6 | DELFT BREW | 29 | 3♠ | ♦J | +2 | -10 |
| -4.9 | Round 6 | DELFT BREW | 25 | 3NT | ♠4 | -2 | -7 |
| -5.3 | Round 6 | DELFT BREW | 26 | 1NT | ♠4 | -2 | -7 |
| -5.5 | Round 6 | DELFT BREW | 21 | 4♠ | ♣6 | -1 | -5 |
| -5.8 | Round 9 | VAN DEN HOEK | 23 | 3NT | ♠7 | +1 | +0 |
| -6.1 | Round 12 | RIO | 24 | 6♠ | ♠4 | +1 | -1 |
| -6.4 | Round 8 | DE MIJNSTREEK | 20 | 2♥ | ♠Q | +1 | -10 |
| -6.5 | Round 11 | 2 KLAVEREN | 12 | 5♣ | ♥K | -2 | -11 |
| -6.9 | Round 1 | HET WITTE 1 | 3 | 3♣ | ♥A | +2 | -10 |
| -7.6 | Round 13 | FERLEMA | 8 | 1NTx | ♠6 | +3 | -2 |
| -8.0 | Round 12 | RIO | 28 | 3NT | ♠10 | = | -10 |
| -10.6 | Round 11 | 2 KLAVEREN | 14 | 4♥x | ♥3 | -4 | -9 |
| -10.7 | Round 11 | 2 KLAVEREN | 15 | 6NT | ♥10 | -3 | -11 |
| -12.7 | Round 3 | HRG NEDERLAND | 23 | 3♦x | ♣6 | = | -13 |
| -13.3 | Round 9 | VAN DEN HOEK | 26 | 6♥x | ♦4 | -3 | -19 |