🇳🇱 WACKWITZ Ernst · Netherlands
39rank
+6.2Butler · 100 bds
+0.06per board
±4.6swing
+0.07adjusted /bd
by round
Strength of schedule: opponents averaged +0.01/bd (an average draw) → opponent-adjusted +0.07/bd
By role: declaring +1.04/bd (43) · defending -0.68/bd (57)
By vulnerability: not vulnerable +0.06/bd (100)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 2 | V.Nab | T.Paske – G.Robertson | Closed | 10 | -27.7 | -2.77 | · |
| Round 3 | V.Nab | M.Rimstedt – O.Rimstedt | Open | 10 | -2.8 | -0.28 | · |
| Round 4 | V.Nab | P.Jassem – P.Tuczynski | Open | 10 | +2.7 | +0.27 | · |
| Round 6 | V.Nab | K.Lu – J.Shen | Open | 10 | +14.5 | +1.45 | · |
| Round 7 | V.Nab | R.Jeng – A.Jeng | Open | 10 | +7.8 | +0.78 | · |
| Round 9 | V.Nab | K.Ormay – B.Fischer | Open | 10 | +26.1 | +2.61 | · |
| Round 10 | V.Nab | E.Du Corail – P.Cotreau | Open | 10 | -5.0 | -0.50 | · |
| Round 11 | V.Nab | L.Travis – S.Williams | Open | 10 | +13.4 | +1.34 | · |
| Round 12 | V.Nab | O.Tusher – G.Gerstner | Open | 10 | -12.4 | -1.24 | · |
| Round 13 | V.Nab | J.Stern – J.Patchett | Open | 10 | -10.4 | -1.04 | · |
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 |
|---|---|---|---|---|---|---|---|
| +11.3 | Round 9 | 🇭🇺 Hungary | 5 | 2♠x | ♠3 | -3 | · |
| +11.1 | Round 3 | 🇸🇪 Sweden | 29 | 5♥x | ♥A | = | · |
| +10.1 | Round 4 | 🇵🇱 Poland | 9 | 6♦ | ♠J | = | · |
| +10.0 | Round 11 | 🇦🇺 Australia | 27 | 4♠ | ♣T | = | · |
| +8.9 | Round 6 | 🇨🇳 China | 4 | 2♠ | ♣A | -3 | · |
| +8.9 | Round 13 | 🇺🇸 USA 1 | 14 | 5♥ | ♠K | -1 | · |
| +8.0 | Round 11 | 🇦🇺 Australia | 26 | 3N | ♣2 | -1 | · |
| +7.7 | Round 7 | 🇺🇸 USA 2 | 18 | 4♠ | ♠9 | +1 | · |
| +7.5 | Round 11 | 🇦🇺 Australia | 24 | 4♥ | ♣J | +1 | · |
| +6.5 | Round 9 | 🇭🇺 Hungary | 2 | 4♠ | ♦T | -1 | · |
| +6.1 | Round 4 | 🇵🇱 Poland | 3 | 3N | ♠Q | -3 | · |
| +6.1 | Round 9 | 🇭🇺 Hungary | 10 | 1Nx | ♠7 | = | · |
| +5.9 | Round 10 | 🇫🇷 France | 17 | 3♣ | ♣3 | +1 | · |
| +5.4 | Round 6 | 🇨🇳 China | 9 | 3♥ | ♥Q | -2 | · |
| +4.2 | Round 10 | 🇫🇷 France | 19 | 5♣ | ♥4 | -1 | · |
| +4.1 | Round 4 | 🇵🇱 Poland | 6 | 3N | ♠J | = | · |
| +4.0 | Round 12 | 🇮🇱 Israel | 3 | 3N | ♦Q | = | · |
| +3.9 | Round 3 | 🇸🇪 Sweden | 30 | 4♦ | ♥Q | = | · |
| +3.5 | Round 3 | 🇸🇪 Sweden | 28 | 5♠ | ♥K | = | · |
| +3.5 | Round 9 | 🇭🇺 Hungary | 8 | 6N | ♦8 | = | · |
| +3.2 | Round 11 | 🇦🇺 Australia | 21 | 3♦ | ♥A | = | · |
| +2.9 | Round 2 | 🏴 England | 15 | 1N | ♠T | +1 | · |
| +2.8 | Round 7 | 🇺🇸 USA 2 | 19 | 1N | ♠8 | -1 | · |
| +2.7 | Round 6 | 🇨🇳 China | 1 | 2♦ | ♥7 | = | · |
| +2.7 | Round 7 | 🇺🇸 USA 2 | 16 | 3♣ | ♥8 | -1 | · |
| +2.3 | Round 9 | 🇭🇺 Hungary | 1 | 4♠ | ♠2 | -1 | · |
| +2.3 | Round 10 | 🇫🇷 France | 12 | 4♥ | ♣A | -2 | · |
| +2.2 | Round 3 | 🇸🇪 Sweden | 22 | 3N | ♥2 | +2 | · |
| +2.0 | Round 2 | 🏴 England | 17 | 3N | ♣4 | +2 | · |
| +1.8 | Round 7 | 🇺🇸 USA 2 | 14 | 1N | ♣2 | = | · |
| +1.7 | Round 6 | 🇨🇳 China | 6 | 1N | ♣6 | -2 | · |
| +1.4 | Round 12 | 🇮🇱 Israel | 6 | 3N | ♠8 | +1 | · |
| +1.3 | Round 7 | 🇺🇸 USA 2 | 17 | 4♥ | ♠2 | +2 | · |
| +1.3 | Round 13 | 🇺🇸 USA 1 | 16 | 4♠ | ♣3 | = | · |
| +1.2 | Round 13 | 🇺🇸 USA 1 | 13 | 3N | ♣2 | -1 | · |
| +0.8 | Round 9 | 🇭🇺 Hungary | 3 | 4♠ | ♣3 | +1 | · |
| +0.7 | Round 3 | 🇸🇪 Sweden | 27 | 2♦ | ♣A | -1 | · |
| +0.7 | Round 6 | 🇨🇳 China | 7 | 3N | ♠3 | = | · |
| +0.6 | Round 6 | 🇨🇳 China | 3 | 4♠ | ♥J | +1 | · |
| +0.5 | Round 13 | 🇺🇸 USA 1 | 18 | 3♥ | ♣4 | = | · |
| +0.4 | Round 4 | 🇵🇱 Poland | 2 | 3♦ | ♦6 | +2 | · |
| +0.4 | Round 7 | 🇺🇸 USA 2 | 13 | 2♥ | ♥6 | = | · |
| +0.4 | Round 10 | 🇫🇷 France | 14 | 1N | ♥2 | -2 | · |
| +0.3 | Round 6 | 🇨🇳 China | 5 | 5♠x | ♦x | -1 | · |
| +0.3 | Round 7 | 🇺🇸 USA 2 | 15 | 4♠ | ♥Q | +2 | · |
| +0.3 | Round 10 | 🇫🇷 France | 18 | 3♥ | ♠9 | -1 | · |
| -0.0 | Round 4 | 🇵🇱 Poland | 10 | 2♠ | ♥K | = | · |
| -0.1 | Round 11 | 🇦🇺 Australia | 25 | 3N | ♠8 | -1 | · |
| -0.1 | Round 13 | 🇺🇸 USA 1 | 19 | 4♠ | ♦8 | +1 | · |
| -0.2 | Round 9 | 🇭🇺 Hungary | 4 | 3♦ | ♣3 | +1 | · |
| -0.3 | Round 9 | 🇭🇺 Hungary | 7 | 3N | ♦9 | +1 | · |
| -0.3 | Round 13 | 🇺🇸 USA 1 | 20 | 3♣ | ♦J | -1 | · |
| -0.5 | Round 2 | 🏴 England | 18 | 4♠ | ♦K | = | · |
| -0.5 | Round 9 | 🇭🇺 Hungary | 6 | 4♥ | ♣2 | +1 | · |
| -0.5 | Round 11 | 🇦🇺 Australia | 22 | 3♠ | ♥7 | = | · |
| -0.6 | Round 10 | 🇫🇷 France | 16 | 2♥ | ♦3 | -1 | · |
| -0.7 | Round 10 | 🇫🇷 France | 15 | 4♥ | ♠7 | +1 | · |
| -0.8 | Round 11 | 🇦🇺 Australia | 30 | 3♠ | ♣2 | = | · |
| -0.8 | Round 12 | 🇮🇱 Israel | 1 | 2N | ♠2 | = | · |
| -0.9 | Round 7 | 🇺🇸 USA 2 | 20 | 3♦ | ♣Q | +1 | · |
| -1.0 | Round 4 | 🇵🇱 Poland | 8 | 3♦ | ♦6 | +1 | · |
| -1.1 | Round 6 | 🇨🇳 China | 10 | 2♥ | ♦2 | +1 | · |
| -1.1 | Round 12 | 🇮🇱 Israel | 8 | 3♦ | ♣K | = | · |
| -1.3 | Round 2 | 🏴 England | 12 | 3♠ | ♦5 | = | · |
| -1.3 | Round 13 | 🇺🇸 USA 1 | 15 | 4♥ | ♦J | +1 | · |
| -1.4 | Round 12 | 🇮🇱 Israel | 10 | 3♦ | ♥J | = | · |
| -1.5 | Round 11 | 🇦🇺 Australia | 28 | 3♠ | ♠6 | = | · |
| -1.5 | Round 12 | 🇮🇱 Israel | 2 | 3N | ♦3 | -2 | · |
| -1.6 | Round 12 | 🇮🇱 Israel | 4 | 3N | ♦3 | +1 | · |
| -1.7 | Round 2 | 🏴 England | 19 | 4♥ | ♥A | = | · |
| -1.9 | Round 12 | 🇮🇱 Israel | 9 | 2♦ | ♠7 | +1 | · |
| -2.2 | Round 6 | 🇨🇳 China | 2 | 5♦ | ♦4 | = | · |
| -2.3 | Round 4 | 🇵🇱 Poland | 7 | 2♦ | ♣K | +2 | · |
| -2.5 | Round 6 | 🇨🇳 China | 8 | 6♥ | ♣3 | = | · |
| -2.5 | Round 10 | 🇫🇷 France | 13 | 3N | ♠T | +2 | · |
| -2.5 | Round 11 | 🇦🇺 Australia | 23 | 5♣x | ♥K | -1 | · |
| -2.6 | Round 3 | 🇸🇪 Sweden | 21 | 4♥ | ♣5 | +1 | · |
| -2.8 | Round 2 | 🏴 England | 16 | 6♠ | ♥A | +1 | · |
| -2.9 | Round 4 | 🇵🇱 Poland | 1 | 4♥ | ♣Q | -3 | · |
| -2.9 | Round 4 | 🇵🇱 Poland | 4 | 1N | ♥J | -1 | · |
| -2.9 | Round 12 | 🇮🇱 Israel | 5 | 5♣x | ♣5 | -2 | · |
| -3.1 | Round 3 | 🇸🇪 Sweden | 26 | 4♥ | ♦A | -1 | · |
| -3.4 | Round 9 | 🇭🇺 Hungary | 9 | 2♦x | ♣3 | = | · |
| -3.5 | Round 3 | 🇸🇪 Sweden | 25 | 2♠ | ♠3 | -2 | · |
| -3.6 | Round 7 | 🇺🇸 USA 2 | 12 | 2♠ | ♠3 | -2 | · |
| -4.7 | Round 7 | 🇺🇸 USA 2 | 11 | 5♣ | ♥K | -2 | · |
| -4.8 | Round 2 | 🏴 England | 13 | 3N | ♦2 | +2 | · |
| -5.3 | Round 2 | 🏴 England | 11 | 4♠ | ♣K | -1 | · |
| -5.3 | Round 2 | 🏴 England | 20 | 3N | ♣6 | +2 | · |
| -5.3 | Round 13 | 🇺🇸 USA 1 | 17 | 4♠x | ♦K | = | · |
| -5.4 | Round 10 | 🇫🇷 France | 20 | 2♦x | ♦4 | +1 | · |
| -5.6 | Round 13 | 🇺🇸 USA 1 | 11 | 4♠ | ♦4 | = | · |
| -6.6 | Round 12 | 🇮🇱 Israel | 7 | 3N | ♠T | -3 | · |
| -7.3 | Round 3 | 🇸🇪 Sweden | 23 | 3N | ♦3 | +1 | · |
| -7.7 | Round 3 | 🇸🇪 Sweden | 24 | 4♥ | ♣Q | +1 | · |
| -8.9 | Round 4 | 🇵🇱 Poland | 5 | 4♠ | ♣8 | = | · |
| -8.9 | Round 10 | 🇫🇷 France | 11 | 7♦ | ♥Q | = | · |
| -9.7 | Round 13 | 🇺🇸 USA 1 | 12 | 4♠ | ♥K | -2 | · |
| -9.9 | Round 11 | 🇦🇺 Australia | 29 | 6N | ♠5 | = | · |
| -10.9 | Round 2 | 🏴 England | 14 | 4♠x | ♥K | = | · |