KOSTER Bert · LEUSDEN
723rank
-130.4Butler · 90 bds
-1.45per board
±4.9swing
-2.04vs par /bd · #694/695
-2.17adjusted /bd
by round
vs par split: bidding -1.13 · play -0.91
Strength of schedule: opponents averaged -0.72/bd (an easy draw) → opponent-adjusted -2.17/bd
Card play — on target: opening leads 78.9% #385 of 694 · declarer play 61.5% #643 of 694 · defence 70.5% #682 of 695
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 80.0% (5) | 78.6% (14) |
| Declarer play | 71.4% (7) | 57.9% (19) |
| Defence | 60.0% (15) | 75.9% (29) |
Opening leads by suit led: ♠ 100.0% (3) · ♥ 66.7% (6) · ♦ 100.0% (3) · ♣ 71.4% (7)
vs par by strain: NT -0.62 (24) · a suit -2.56 (66)
vs par by level: part-score -1.50 (34) · game -2.65 (51) · slam +0.40 (5)
By role: declaring -1.12/bd (-4.41 vs par · 46) · defending -1.79/bd (+0.43 vs par · 44)
By vulnerability: vulnerable -1.44/bd (-1.56 vs par · 45) · not vulnerable -1.46/bd (-2.53 vs par · 45)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 3 | T.De Jong | H.Den Boer – K.Schipper | Open | 10 | -33.7 | -3.37 | -3.20 |
| Round 5 | T.De Jong | S.Capal – J.Harris | Open | 10 | -1.3 | -0.13 | -0.80 |
| Round 6 | T.De Jong | M.Schoof – K.Van Leeuwen-Krappen | Open | 10 | -5.6 | -0.56 | -0.80 |
| Round 7 | T.De Jong | R.Revankar – S.Gole | Closed | 10 | -28.8 | -2.88 | -0.60 |
| Round 8 | T.De Jong | A.Sain – G.Lakhani | Closed | 10 | -51.2 | -5.12 | -3.70 |
| Round 9 | T.De Jong | R.Donkersloot – J.Prinsen | Closed | 10 | -17.3 | -1.73 | -0.50 |
| Round 10 | T.De Jong | J.Schellart – J.Heshusius | Closed | 10 | +1.9 | +0.19 | -0.40 |
| Round 11 | T.De Jong | P.Rankin – P.Hooykaas | Closed | 10 | -2.2 | -0.22 | -3.60 |
| Round 12 | T.De Jong | S.Sietsma – I.Nieuwenhuis | Closed | 10 | +7.8 | +0.78 | -4.80 |
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 |
|---|---|---|---|---|---|---|---|
| +9.3 | Round 5 | HARRIS | 13 | 6♠ | ♦7 | = | +0 |
| +8.7 | Round 9 | HONEST 1 | 23 | 4♥x | ♠J | = | +5 |
| +8.4 | Round 10 | HEKSENTOER OUDEWATER | 2 | 4♠ | ♠6 | +1 | +1 |
| +8.0 | Round 12 | BCO Z | 28 | 3NT | ♠7 | = | +10 |
| +7.0 | Round 6 | DE MEER | 24 | 3NT | ♥4 | -1 | +10 |
| +6.9 | Round 11 | GOLD COAST AUSTRALIA | 17 | 5♥x | ♣10 | -2 | +9 |
| +6.1 | Round 10 | HEKSENTOER OUDEWATER | 5 | 4♥ | ♠A | = | +8 |
| +5.9 | Round 3 | DELFT BREW | 21 | 5♥x | ♦Q | -4 | +5 |
| +5.4 | Round 11 | GOLD COAST AUSTRALIA | 11 | 6NT | ♥J | = | +0 |
| +4.9 | Round 5 | HARRIS | 18 | 1NT | ♠K | -2 | +8 |
| +4.6 | Round 6 | DE MEER | 21 | 4♠ | ♣6 | = | +7 |
| +3.5 | Round 5 | HARRIS | 19 | 4♦ | ♣5 | -1 | +10 |
| +3.3 | Round 6 | DE MEER | 28 | 1NT | ♥8 | +1 | +0 |
| +2.2 | Round 7 | PUNE BLUES INDIA | 1 | 1NT | ♣9 | +1 | +7 |
| +1.9 | Round 11 | GOLD COAST AUSTRALIA | 19 | 3NT | ♥5 | +3 | -11 |
| +1.8 | Round 11 | GOLD COAST AUSTRALIA | 12 | 3♣ | ♥K | = | +7 |
| +1.7 | Round 8 | INDIAN LADIES | 14 | 4♥ | ♣J | -1 | +4 |
| +1.7 | Round 12 | BCO Z | 30 | 4♥ | ♦K | +1 | -10 |
| +1.5 | Round 12 | BCO Z | 22 | 3♣ | ♥K | = | -1 |
| +1.5 | Round 12 | BCO Z | 26 | 3♦ | ♣K | +1 | +0 |
| +1.5 | Round 12 | BCO Z | 27 | 4♥ | ♣9 | +1 | +0 |
| +1.3 | Round 5 | HARRIS | 14 | 2♠ | ♥A | -2 | +0 |
| +1.2 | Round 10 | HEKSENTOER OUDEWATER | 6 | 4♠ | ♠4 | = | +1 |
| +1.1 | Round 3 | DELFT BREW | 25 | 4♠ | ♦Q | -1 | -1 |
| +0.8 | Round 12 | BCO Z | 21 | 3NT | ♦2 | +2 | -12 |
| +0.8 | Round 12 | BCO Z | 23 | 1NT | ♦K | -4 | -6 |
| +0.8 | Round 12 | BCO Z | 29 | 6♥x | ♦3 | = | -11 |
| +0.7 | Round 9 | HONEST 1 | 21 | 3♠ | ♥J | +1 | -1 |
| +0.7 | Round 10 | HEKSENTOER OUDEWATER | 1 | 3NT | ♥5 | +2 | +0 |
| +0.4 | Round 9 | HONEST 1 | 22 | 4♥ | ♥9 | +1 | +0 |
| +0.3 | Round 6 | DE MEER | 30 | 2♣ | ♣6 | = | -1 |
| +0.3 | Round 10 | HEKSENTOER OUDEWATER | 10 | 2NT | ♦3 | = | +0 |
| +0.2 | Round 7 | PUNE BLUES INDIA | 2 | 3NT | ♦10 | +2 | +1 |
| -0.1 | Round 5 | HARRIS | 16 | 4♥ | ♠9 | +2 | -1 |
| -0.1 | Round 6 | DE MEER | 27 | 3♣ | ♠10 | +1 | -7 |
| -0.1 | Round 10 | HEKSENTOER OUDEWATER | 7 | 2♥ | ♦K | +1 | +0 |
| -0.2 | Round 9 | HONEST 1 | 29 | 3NT | ♠J | = | +2 |
| -0.3 | Round 3 | DELFT BREW | 29 | 2♠ | ♣A | -1 | +1 |
| -0.3 | Round 5 | HARRIS | 11 | 4♠ | ♠10 | = | +0 |
| -0.4 | Round 9 | HONEST 1 | 24 | 2♠ | ♦3 | -1 | -4 |
| -0.4 | Round 11 | GOLD COAST AUSTRALIA | 15 | 3NT | ♦4 | +1 | +0 |
| -0.5 | Round 7 | PUNE BLUES INDIA | 3 | 3NT | ♦7 | +1 | -1 |
| -0.5 | Round 7 | PUNE BLUES INDIA | 5 | 2♥ | ♣5 | +1 | +0 |
| -0.5 | Round 7 | PUNE BLUES INDIA | 6 | 4♥x | ♣A | -1 | -5 |
| -0.5 | Round 8 | INDIAN LADIES | 15 | 3NT | ♦3 | +1 | -1 |
| -0.7 | Round 7 | PUNE BLUES INDIA | 7 | 4♠ | ♥K | = | +0 |
| -1.0 | Round 5 | HARRIS | 12 | 4♥ | ♦4 | = | -1 |
| -1.4 | Round 3 | DELFT BREW | 26 | 3♥ | ♦A | +1 | +1 |
| -1.4 | Round 11 | GOLD COAST AUSTRALIA | 13 | 4♥ | ♦7 | = | +1 |
| -1.6 | Round 9 | HONEST 1 | 27 | 3NT | ♦Q | = | -3 |
| -1.7 | Round 6 | DE MEER | 23 | 4♥ | ♥A | +1 | +0 |
| -1.8 | Round 3 | DELFT BREW | 22 | 2♦ | ♠J | = | +1 |
| -1.9 | Round 11 | GOLD COAST AUSTRALIA | 20 | 4♠ | ♥J | +1 | -13 |
| -2.1 | Round 8 | INDIAN LADIES | 18 | 4♥x | ♣A | -3 | -4 |
| -2.6 | Round 6 | DE MEER | 22 | 2NT | ♣9 | +1 | +7 |
| -2.6 | Round 6 | DE MEER | 25 | 3♦ | ♥6 | -1 | -5 |
| -2.6 | Round 10 | HEKSENTOER OUDEWATER | 9 | 1NT | ♣Q | = | +2 |
| -2.6 | Round 11 | GOLD COAST AUSTRALIA | 16 | 3NT | ♠3 | -2 | -11 |
| -2.7 | Round 5 | HARRIS | 20 | 3♦ | ♠9 | +1 | -10 |
| -2.8 | Round 8 | INDIAN LADIES | 17 | 2♠ | ♥J | = | +0 |
| -2.8 | Round 9 | HONEST 1 | 25 | 2♥ | ♦8 | +1 | -1 |
| -3.0 | Round 5 | HARRIS | 15 | 6♥ | ♣J | = | +0 |
| -3.1 | Round 6 | DE MEER | 26 | 2♠ | ♣2 | = | -6 |
| -3.1 | Round 10 | HEKSENTOER OUDEWATER | 4 | 3♦ | ♠A | +1 | +0 |
| -3.5 | Round 12 | BCO Z | 25 | 3♦ | ♥Q | = | -7 |
| -3.6 | Round 7 | PUNE BLUES INDIA | 4 | 2♠ | ♣Q | +1 | -1 |
| -3.7 | Round 8 | INDIAN LADIES | 20 | 4♥ | ♣10 | = | +0 |
| -3.9 | Round 3 | DELFT BREW | 28 | 5♥x | ♦10 | -2 | -2 |
| -4.1 | Round 3 | DELFT BREW | 24 | 4♥ | ♣5 | -3 | -6 |
| -4.3 | Round 10 | HEKSENTOER OUDEWATER | 3 | 2♠ | ♦A | +1 | -6 |
| -4.7 | Round 10 | HEKSENTOER OUDEWATER | 8 | 4♠ | ♣6 | -1 | -10 |
| -5.1 | Round 7 | PUNE BLUES INDIA | 8 | 4♠ | ♥K | +2 | -11 |
| -5.2 | Round 9 | HONEST 1 | 30 | 3NT | ♠4 | = | +0 |
| -5.3 | Round 12 | BCO Z | 24 | 4♥ | ♦K | +2 | -11 |
| -5.9 | Round 11 | GOLD COAST AUSTRALIA | 14 | 4♠ | ♦K | -1 | -10 |
| -6.0 | Round 11 | GOLD COAST AUSTRALIA | 18 | 3♠ | ♣Q | = | -8 |
| -6.8 | Round 3 | DELFT BREW | 30 | 3♥ | ♦8 | -6 | -9 |
| -7.0 | Round 3 | DELFT BREW | 27 | 3NT | ♦2 | +1 | -7 |
| -7.0 | Round 8 | INDIAN LADIES | 11 | 3NT | ♥J | = | -6 |
| -7.4 | Round 8 | INDIAN LADIES | 12 | 3♥ | ♠K | = | -7 |
| -7.4 | Round 8 | INDIAN LADIES | 13 | 5♣ | ♦K | -2 | -7 |
| -7.7 | Round 9 | HONEST 1 | 26 | 4♥ | ♣10 | +3 | +12 |
| -9.2 | Round 9 | HONEST 1 | 28 | 2♥ | ♣K | +4 | -15 |
| -9.4 | Round 8 | INDIAN LADIES | 16 | 3NT | ♣2 | +2 | -4 |
| -10.0 | Round 7 | PUNE BLUES INDIA | 9 | 4♥x | ♠9 | -3 | -9 |
| -10.3 | Round 7 | PUNE BLUES INDIA | 10 | 6♥ | ♠J | = | +13 |
| -10.7 | Round 6 | DE MEER | 29 | 4♠ | ♥A | -2 | -13 |
| -12.6 | Round 8 | INDIAN LADIES | 19 | 4♠x | ♦A | = | -12 |
| -13.2 | Round 5 | HARRIS | 17 | 5♦x | ♣9 | -4 | -14 |
| -15.4 | Round 3 | DELFT BREW | 23 | 4♥x | ♦2 | -5 | -15 |