DE KOSTER Robbie · RUEFUL RABBITS
239rank
-2.2Butler · 100 bds
-0.02per board
±3.5swing
-0.37vs par /bd · #290/455
-0.02adjusted /bd
by round
vs par split: bidding -0.45 · play +0.08
Strength of schedule: opponents averaged +0.01/bd (an average draw) → opponent-adjusted -0.02/bd
Card play — on target: opening leads 80.8% #276 of 455 · declarer play 88.9% #69 of 455 · defence 87.5% #154 of 455
Bidding activity — not a pass: 42.2% #222 of 455 (113/268)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 75.0% (8) | 83.3% (18) |
| Declarer play | 88.9% (9) | 88.9% (18) |
| Defence | 92.3% (13) | 85.7% (35) |
Opening leads by suit led: ♠ 71.4% (7) · ♥ 100.0% (5) · ♦ 66.7% (9) · ♣ 100.0% (5)
vs par by strain: NT -0.36 (25) · a suit -0.37 (75)
vs par by level: part-score +0.12 (43) · game -1.29 (51) · slam +4.00 (6)
By role: declaring +0.12/bd (-2.44 vs par · 52) · defending -0.17/bd (+1.88 vs par · 48)
By vulnerability: vulnerable +0.08/bd (-0.14 vs par · 51) · not vulnerable -0.13/bd (-0.61 vs par · 49)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | E.Poppe | T.Stoen – L.Johansen | Closed | 10 | -3.9 | -0.39 | -3.50 |
| Round 2 | E.Poppe | M.Mestric – T.Brkljacic | Open | 10 | -2.6 | -0.26 | +2.20 |
| Round 3 | E.Poppe | A.Jesenicnik – T.Orac | Closed | 10 | +12.0 | +1.20 | -0.20 |
| Round 4 | E.Poppe | W.Strzemecki – Z.Trojan | Closed | 10 | -5.2 | -0.52 | +0.20 |
| Round 5 | E.Poppe | S.De Wijs – D.Von Arnim | Closed | 10 | +5.0 | +0.50 | +1.50 |
| Round 6 | E.Poppe | E.Plana – C.Mann | Closed | 10 | +3.3 | +0.33 | -1.20 |
| Round 7 | E.Poppe | K.Bertheau – Z.Mahmood | Open | 10 | -5.0 | -0.50 | -1.80 |
| Round 8 | E.Poppe | A.Diakun – R.Szarek | Closed | 10 | +12.0 | +1.20 | +0.20 |
| Round 9 | E.Poppe | R.Van Prooijen – S.De Wijs | Closed | 10 | -25.4 | -2.54 | -1.40 |
| Round 10 | E.Poppe | W.Van Zwol – O.Nijssen | Closed | 10 | +7.6 | +0.76 | +0.30 |
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 |
|---|---|---|---|---|---|---|---|
| +10.1 | Round 8 | MOONLIGHT | 15 | 6♠ | ♠T | -1 | +13 |
| +8.7 | Round 10 | DUTCHIES | 3 | 7♦ | ♦5 | = | -2 |
| +7.0 | Round 1 | MIXIMUM EFFORT | 10 | 3NT | ♠J | +1 | +1 |
| +7.0 | Round 5 | YOSHKA | 14 | 3NT | ♥7 | -1 | +10 |
| +6.8 | Round 3 | DUCKING AROUND | 21 | 3♥x | ♠K | -2 | +5 |
| +5.6 | Round 3 | DUCKING AROUND | 25 | 4♥ | ♣9 | = | +6 |
| +5.5 | Round 3 | DUCKING AROUND | 26 | 3NT | ♠7 | = | +3 |
| +5.5 | Round 7 | GUPTA | 3 | 6♠ | ♦J | +1 | +11 |
| +4.9 | Round 7 | GUPTA | 7 | 3NT | ♠8 | +2 | +11 |
| +4.6 | Round 5 | YOSHKA | 13 | 4♠ | ♣6 | -1 | +12 |
| +4.5 | Round 8 | MOONLIGHT | 17 | 3♥ | ♣A | = | +6 |
| +4.3 | Round 7 | GUPTA | 9 | 3NT | ♥4 | +4 | -12 |
| +3.9 | Round 2 | CROATIA | 19 | 4♠ | ♥A | = | +7 |
| +3.8 | Round 4 | BRIDGE FOR BUSINESS | 5 | 2♠ | ♣7 | = | -1 |
| +3.5 | Round 1 | MIXIMUM EFFORT | 6 | 1NT | ♦2 | +1 | +1 |
| +3.3 | Round 8 | MOONLIGHT | 11 | 3♦ | ♠7 | = | +5 |
| +3.2 | Round 8 | MOONLIGHT | 20 | 4♠ | ♥4 | = | +3 |
| +3.1 | Round 2 | CROATIA | 12 | 2♠ | ♦K | = | +6 |
| +2.8 | Round 2 | CROATIA | 13 | 2♥ | ♦7 | -1 | +11 |
| +2.5 | Round 3 | DUCKING AROUND | 30 | 3♥ | ♦A | = | +1 |
| +2.5 | Round 4 | BRIDGE FOR BUSINESS | 2 | 1NT | ♥2 | = | +5 |
| +2.5 | Round 4 | BRIDGE FOR BUSINESS | 4 | 5♥ | ♥2 | = | +0 |
| +2.3 | Round 6 | WHAT A DAY | 21 | 3NT | ♠T | +4 | -12 |
| +2.2 | Round 4 | BRIDGE FOR BUSINESS | 1 | 2♥ | ♠8 | -2 | +5 |
| +1.8 | Round 3 | DUCKING AROUND | 28 | 3♦ | ♠4 | = | +0 |
| +1.8 | Round 10 | DUTCHIES | 4 | 5♦ | ♥A | +1 | +10 |
| +1.7 | Round 5 | YOSHKA | 20 | 3♥ | ♣Q | +1 | +10 |
| +1.6 | Round 6 | WHAT A DAY | 23 | 4♠ | ♠A | = | +0 |
| +1.6 | Round 10 | DUTCHIES | 10 | 3NT | ♦Q | +2 | +2 |
| +1.5 | Round 10 | DUTCHIES | 7 | 3♦ | ♠4 | +2 | +10 |
| +1.4 | Round 4 | BRIDGE FOR BUSINESS | 6 | 3NT | ♠K | -1 | +5 |
| +1.2 | Round 6 | WHAT A DAY | 25 | 4♠ | ♦T | -1 | +6 |
| +1.1 | Round 2 | CROATIA | 18 | 3NT | ♦T | +1 | +0 |
| +1.0 | Round 1 | MIXIMUM EFFORT | 9 | 4♥ | ♣7 | +2 | +5 |
| +1.0 | Round 5 | YOSHKA | 15 | 2♠ | ♣2 | -1 | +4 |
| +1.0 | Round 5 | YOSHKA | 19 | 3NT | ♦9 | = | +0 |
| +1.0 | Round 7 | GUPTA | 5 | 2♥ | ♦7 | = | +0 |
| +0.7 | Round 7 | GUPTA | 8 | 2♥ | ♠J | +2 | +6 |
| +0.6 | Round 8 | MOONLIGHT | 16 | 3♥ | ♦Q | = | +0 |
| +0.6 | Round 9 | MAURITIUS MIXED | 25 | 3NT | ♠3 | = | +1 |
| +0.5 | Round 2 | CROATIA | 17 | 4♠ | ♦6 | = | +1 |
| +0.4 | Round 6 | WHAT A DAY | 29 | 2♠ | ♣A | +1 | +1 |
| +0.4 | Round 10 | DUTCHIES | 6 | 4♥ | ♥6 | +1 | -14 |
| +0.2 | Round 3 | DUCKING AROUND | 27 | 3♦ | ♥T | -1 | +2 |
| +0.2 | Round 6 | WHAT A DAY | 24 | 2♦ | ♣A | = | +0 |
| +0.1 | Round 9 | MAURITIUS MIXED | 27 | 4♥ | ♣A | +1 | +0 |
| -0.0 | Round 2 | CROATIA | 16 | 1NT | ♥3 | = | +1 |
| -0.1 | Round 6 | WHAT A DAY | 28 | 4♠ | ♦Q | -1 | -2 |
| -0.1 | Round 8 | MOONLIGHT | 14 | 4♥ | ♠4 | +1 | -11 |
| -0.2 | Round 9 | MAURITIUS MIXED | 26 | 2NT | ♥7 | = | +0 |
| -0.2 | Round 10 | DUTCHIES | 9 | 3♥ | ♠A | +1 | -6 |
| -0.3 | Round 3 | DUCKING AROUND | 22 | 3♦ | ♥7 | -1 | -1 |
| -0.4 | Round 6 | WHAT A DAY | 22 | 4♥ | ♦A | +1 | +0 |
| -0.4 | Round 10 | DUTCHIES | 2 | 6♣ | ♥J | = | +2 |
| -0.5 | Round 1 | MIXIMUM EFFORT | 4 | 4♥ | ♠2 | +2 | -17 |
| -0.5 | Round 6 | WHAT A DAY | 27 | 3NT | ♦K | +2 | +0 |
| -0.6 | Round 1 | MIXIMUM EFFORT | 5 | 4♠ | ♥3 | +2 | -1 |
| -0.6 | Round 2 | CROATIA | 11 | 3NT | ♠K | = | +2 |
| -0.7 | Round 6 | WHAT A DAY | 26 | 4♠ | ♦6 | = | +0 |
| -0.7 | Round 6 | WHAT A DAY | 30 | 3NT | ♠2 | -1 | -5 |
| -0.7 | Round 7 | GUPTA | 4 | 3NT | ♥8 | +3 | -13 |
| -0.8 | Round 8 | MOONLIGHT | 12 | 3♦ | ♥A | +1 | -7 |
| -0.9 | Round 3 | DUCKING AROUND | 29 | 2♣ | ♦T | -2 | -2 |
| -1.0 | Round 10 | DUTCHIES | 8 | 2♦ | ♠5 | = | +2 |
| -1.1 | Round 5 | YOSHKA | 18 | 4♥ | ♠8 | +1 | +0 |
| -1.2 | Round 1 | MIXIMUM EFFORT | 8 | 3♥ | ♠T | +1 | -7 |
| -1.2 | Round 3 | DUCKING AROUND | 24 | 4♣ | ♦8 | = | -7 |
| -1.2 | Round 5 | YOSHKA | 16 | 4♥x | ♥5 | -1 | +0 |
| -1.5 | Round 7 | GUPTA | 6 | 1♦ | ♥3 | -2 | -2 |
| -1.5 | Round 8 | MOONLIGHT | 18 | 3♣ | ♠A | = | +0 |
| -1.5 | Round 9 | MAURITIUS MIXED | 22 | 3NT | ♥J | +1 | +0 |
| -1.6 | Round 5 | YOSHKA | 11 | 2♥ | ♦3 | +2 | -1 |
| -1.6 | Round 10 | DUTCHIES | 5 | 2♥ | ♥5 | +1 | -1 |
| -1.7 | Round 4 | BRIDGE FOR BUSINESS | 10 | 2♣ | ♦9 | +1 | +0 |
| -1.8 | Round 9 | MAURITIUS MIXED | 28 | 4♠ | ♣K | +2 | -1 |
| -1.9 | Round 4 | BRIDGE FOR BUSINESS | 8 | 3♠ | ♦9 | = | +0 |
| -2.0 | Round 1 | MIXIMUM EFFORT | 3 | 4♥ | ♦K | +1 | +0 |
| -2.3 | Round 5 | YOSHKA | 17 | 5♣ | ♥K | +1 | -11 |
| -2.3 | Round 9 | MAURITIUS MIXED | 30 | 3NT | ♥4 | +3 | +11 |
| -2.4 | Round 4 | BRIDGE FOR BUSINESS | 9 | 3NT | ♣J | = | -3 |
| -2.5 | Round 1 | MIXIMUM EFFORT | 1 | 3♥ | ♠A | +1 | -2 |
| -2.6 | Round 1 | MIXIMUM EFFORT | 7 | 3♠ | ♣T | -1 | -5 |
| -2.6 | Round 9 | MAURITIUS MIXED | 24 | 3♣ | ♥9 | -2 | -8 |
| -3.2 | Round 2 | CROATIA | 14 | 4♠ | ♦5 | +1 | +0 |
| -3.2 | Round 8 | MOONLIGHT | 13 | 3NT | ♠4 | -2 | -8 |
| -3.2 | Round 10 | DUTCHIES | 1 | 6♥ | ♣3 | = | +0 |
| -3.3 | Round 9 | MAURITIUS MIXED | 29 | 5♥x | ♥K | -2 | -4 |
| -3.4 | Round 7 | GUPTA | 2 | 4♥ | ♠A | -1 | -10 |
| -4.0 | Round 4 | BRIDGE FOR BUSINESS | 7 | 4♥ | ♣2 | +1 | -4 |
| -4.1 | Round 5 | YOSHKA | 12 | 5♥ | ♣A | +1 | -9 |
| -4.1 | Round 8 | MOONLIGHT | 19 | 4♣ | ♠2 | +2 | +1 |
| -4.6 | Round 2 | CROATIA | 20 | 3NT | ♠6 | +1 | +1 |
| -5.2 | Round 7 | GUPTA | 10 | 6♥ | ♠T | = | +0 |
| -5.6 | Round 2 | CROATIA | 15 | 4♠ | ♦3 | -2 | -7 |
| -6.0 | Round 1 | MIXIMUM EFFORT | 2 | 3NT | ♠A | = | -10 |
| -7.2 | Round 9 | MAURITIUS MIXED | 21 | 3♥ | ♠7 | -2 | -3 |
| -7.2 | Round 9 | MAURITIUS MIXED | 23 | 3♠ | ♣Q | +1 | -10 |
| -7.6 | Round 4 | BRIDGE FOR BUSINESS | 3 | 2♠x | ♠T | -2 | -5 |
| -8.0 | Round 3 | DUCKING AROUND | 23 | 3♥ | ♣9 | +2 | -9 |
| -10.6 | Round 7 | GUPTA | 1 | 4♠x | ♥8 | -3 | -9 |