VAN DEN BOS Berend · MAHAFFEY
60rank
+51.1Butler · 90 bds
+0.57per board
±3.2swing
+0.71vs par /bd · #88/478
+0.80adjusted /bd
by round
vs par split: bidding +0.46 · play +0.26
Strength of schedule: opponents averaged +0.23/bd (a tough draw) → opponent-adjusted +0.80/bd
Card play — on target: opening leads 90.9% #26 of 476 · declarer play 89.5% #44 of 478 · defence 95.1% #27 of 478
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 100.0% (4) | 88.9% (18) |
| Declarer play | 85.7% (7) | 91.7% (12) |
| Defence | 100.0% (12) | 93.1% (29) |
Opening leads by suit led: ♠ 80.0% (5) · ♥ 100.0% (6) · ♦ 80.0% (5) · ♣ 100.0% (6)
vs par by strain: NT +0.75 (28) · a suit +0.69 (62)
vs par by level: part-score +0.93 (42) · game +0.57 (42) · slam +0.17 (6)
By role: declaring +0.35/bd (-1.06 vs par · 49) · defending +0.83/bd (+2.83 vs par · 41)
By vulnerability: vulnerable +0.58/bd (+0.52 vs par · 44) · not vulnerable +0.56/bd (+0.89 vs par · 46)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 2 | J.Van Lankveld | W.Strzemecki – P.Zawada | Closed | 10 | +5.1 | +0.51 | +1.10 |
| Round 3 | J.Van Lankveld | J.Li – Z.Fu | Closed | 10 | -9.6 | -0.96 | -0.60 |
| Round 4 | J.Van Lankveld | E.Lindqvist – B.Brogeland | Closed | 10 | +17.5 | +1.75 | +1.30 |
| Round 5 | J.Van Lankveld | R.Pavlicek – J.Munday | Open | 10 | -1.3 | -0.13 | +1.40 |
| Round 6 | J.Van Lankveld | J.Hackett – J.Hackett | Closed | 10 | +11.1 | +1.11 | -1.20 |
| Round 7 | J.Van Lankveld | R.Katz – N.Nickell | Open | 10 | -2.3 | -0.23 | -2.10 |
| Round 8 | J.Van Lankveld | B.Marina – I.Coldea | Closed | 10 | +27.8 | +2.78 | +5.20 |
| Round 9 | J.Van Lankveld | M.Thoma – P.Ravenna | Open | 10 | -0.3 | -0.03 | -0.60 |
| Round 10 | J.Van Lankveld | T.Sadek – W.El Ahmady | Open | 10 | +3.1 | +0.31 | +1.90 |
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 |
|---|---|---|---|---|---|---|---|
| +9.0 | Round 5 | PAVLICEK | 23 | 4♠x | ♣5 | -2 | +14 |
| +8.5 | Round 6 | MOSSOP | 2 | 5♠x | ♣3 | -4 | +7 |
| +7.7 | Round 4 | DIAMOND | 15 | 5♦x | ♠2 | +1 | +6 |
| +6.5 | Round 10 | STRUL | 26 | 1NT | ♥10 | +2 | +10 |
| +5.5 | Round 8 | COLDEA | 1 | 3NT | ♥4 | -1 | +5 |
| +5.1 | Round 8 | COLDEA | 8 | 4♠ | ♠3 | = | +7 |
| +5.0 | Round 4 | DIAMOND | 14 | 2♣x | ♦J | -3 | +3 |
| +5.0 | Round 8 | COLDEA | 2 | 2♥ | ♥4 | -2 | +11 |
| +4.9 | Round 2 | ZAWADA | 11 | 1NT | ♠8 | = | +5 |
| +4.3 | Round 4 | DIAMOND | 13 | 1NT | ♠9 | +3 | +2 |
| +4.1 | Round 3 | PD TIMES | 5 | 3NT | ♠3 | -4 | +3 |
| +4.1 | Round 8 | COLDEA | 3 | 3NT | ♥8 | -2 | +13 |
| +4.0 | Round 4 | DIAMOND | 19 | 4♥ | ♠5 | -1 | +5 |
| +3.9 | Round 6 | MOSSOP | 9 | 1NTx | ♦7 | = | +3 |
| +3.9 | Round 10 | STRUL | 22 | 2♥ | ♦5 | +2 | +10 |
| +3.6 | Round 7 | NICKELL | 19 | 4♥ | ♠4 | = | +0 |
| +3.4 | Round 2 | ZAWADA | 20 | 2♠ | ♥K | -1 | +6 |
| +3.4 | Round 3 | PD TIMES | 8 | 1♠ | ♣K | +2 | +1 |
| +3.1 | Round 8 | COLDEA | 4 | 4♥ | ♠10 | -1 | +6 |
| +3.1 | Round 9 | CHAGAS | 18 | 2♠ | ♦J | +2 | +1 |
| +2.6 | Round 4 | DIAMOND | 11 | 4♣ | ♦K | +1 | +7 |
| +2.6 | Round 4 | DIAMOND | 12 | 3♣ | ♦9 | = | +5 |
| +2.4 | Round 2 | ZAWADA | 14 | 2♥ | ♣A | = | +5 |
| +2.4 | Round 7 | NICKELL | 16 | 6♠ | ♥Q | +1 | -11 |
| +2.3 | Round 6 | MOSSOP | 1 | 3♦ | ♠A | = | +5 |
| +2.1 | Round 5 | PAVLICEK | 28 | 2♥ | ♣Q | = | +0 |
| +2.1 | Round 9 | CHAGAS | 14 | 4♠ | ♦8 | -1 | +5 |
| +1.9 | Round 9 | CHAGAS | 11 | 3NT | ♣Q | = | -1 |
| +1.7 | Round 10 | STRUL | 25 | 3NT | ♥6 | +3 | +1 |
| +1.6 | Round 8 | COLDEA | 10 | 2NT | ♥5 | -1 | +0 |
| +1.6 | Round 10 | STRUL | 28 | 2♠ | ♥K | = | +0 |
| +1.4 | Round 9 | CHAGAS | 12 | 6NT | ♠8 | = | +0 |
| +1.3 | Round 7 | NICKELL | 15 | 4♥ | ♦6 | = | +0 |
| +1.2 | Round 6 | MOSSOP | 3 | 2♠ | ♥J | = | -1 |
| +1.1 | Round 8 | COLDEA | 9 | 3♦ | ♠8 | -2 | +2 |
| +1.0 | Round 2 | ZAWADA | 12 | 2♥ | ♦K | +1 | +0 |
| +1.0 | Round 2 | ZAWADA | 19 | 3NT | ♦2 | -1 | +12 |
| +0.9 | Round 3 | PD TIMES | 1 | 1NT | ♦Q | = | -1 |
| +0.9 | Round 6 | MOSSOP | 8 | 2♥ | ♥4 | -1 | -1 |
| +0.9 | Round 8 | COLDEA | 5 | 5♣ | ♥A | = | -2 |
| +0.9 | Round 8 | COLDEA | 7 | 2♦ | ♣2 | +2 | +10 |
| +0.8 | Round 5 | PAVLICEK | 29 | 4♠ | ♥K | +1 | +0 |
| +0.7 | Round 6 | MOSSOP | 7 | 3♣ | ♥3 | +1 | +0 |
| +0.5 | Round 7 | NICKELL | 13 | 6♠ | ♥J | +1 | +8 |
| +0.5 | Round 8 | COLDEA | 6 | 3NT | ♠4 | = | +0 |
| +0.5 | Round 10 | STRUL | 29 | 3NT | ♥2 | +1 | +0 |
| +0.3 | Round 7 | NICKELL | 12 | 3♣ | ♥Q | +1 | +0 |
| +0.3 | Round 9 | CHAGAS | 16 | 5♥ | ♠K | = | +4 |
| +0.2 | Round 7 | NICKELL | 20 | 2♠ | ♦K | = | +1 |
| +0.1 | Round 2 | ZAWADA | 18 | 3NT | ♠Q | +1 | +0 |
| +0.1 | Round 9 | CHAGAS | 20 | 3NT | ♥2 | +2 | -13 |
| +0.0 | Round 3 | PD TIMES | 9 | 3NT | ♠6 | = | +1 |
| -0.0 | Round 4 | DIAMOND | 18 | 2♥ | ♣6 | = | +0 |
| +0.0 | Round 5 | PAVLICEK | 26 | 2♠ | ♦J | = | -1 |
| -0.0 | Round 5 | PAVLICEK | 30 | 4♠ | ♣8 | = | +0 |
| -0.1 | Round 3 | PD TIMES | 7 | 3NT | ♠3 | +1 | +0 |
| -0.2 | Round 6 | MOSSOP | 5 | 3♠ | ♥9 | -1 | -2 |
| -0.2 | Round 9 | CHAGAS | 19 | 3♦ | ♣2 | +1 | +1 |
| -0.4 | Round 4 | DIAMOND | 16 | 1NT | ♠J | -1 | +0 |
| -0.5 | Round 7 | NICKELL | 18 | 3NT | ♥2 | +1 | +1 |
| -0.7 | Round 2 | ZAWADA | 13 | 4♥ | ♦J | +1 | +0 |
| -0.7 | Round 6 | MOSSOP | 4 | 2♥ | ♦10 | -1 | -11 |
| -0.8 | Round 10 | STRUL | 30 | 2♦ | ♠K | = | +0 |
| -0.9 | Round 10 | STRUL | 21 | 3NT | ♦5 | = | +0 |
| -1.1 | Round 5 | PAVLICEK | 24 | 6♦ | ♣K | = | +2 |
| -1.2 | Round 10 | STRUL | 24 | 6NT | ♠J | = | +0 |
| -1.3 | Round 10 | STRUL | 23 | 5♦ | ♣A | -2 | -2 |
| -1.4 | Round 5 | PAVLICEK | 25 | 3NT | ♣2 | = | -1 |
| -1.5 | Round 2 | ZAWADA | 16 | 4♠ | ♣9 | +1 | -11 |
| -1.6 | Round 5 | PAVLICEK | 27 | 3♣ | ♣3 | -1 | +3 |
| -1.6 | Round 9 | CHAGAS | 15 | 4♠ | ♥K | +1 | +0 |
| -1.8 | Round 2 | ZAWADA | 17 | 3NT | ♠9 | +1 | +0 |
| -2.0 | Round 7 | NICKELL | 11 | 3NT | ♥8 | -1 | -5 |
| -2.1 | Round 9 | CHAGAS | 17 | 4♠ | ♣K | = | +1 |
| -2.2 | Round 4 | DIAMOND | 17 | 2NT | ♦3 | +3 | -6 |
| -2.2 | Round 6 | MOSSOP | 6 | 4♠ | ♣A | -1 | -4 |
| -2.2 | Round 7 | NICKELL | 17 | 3♥ | ♣J | -1 | -4 |
| -2.4 | Round 3 | PD TIMES | 6 | 2♠ | ♣9 | = | +0 |
| -2.5 | Round 3 | PD TIMES | 10 | 4♠ | ♣9 | -1 | +6 |
| -2.7 | Round 3 | PD TIMES | 4 | 3♦ | ♠Q | -2 | -3 |
| -3.3 | Round 6 | MOSSOP | 10 | 3NT | ♥7 | -2 | -8 |
| -3.4 | Round 5 | PAVLICEK | 22 | 2♠ | ♥3 | -1 | -5 |
| -3.7 | Round 2 | ZAWADA | 15 | 5♥ | ♠A | = | -6 |
| -3.8 | Round 3 | PD TIMES | 2 | 4♠ | ♣A | -1 | -9 |
| -5.3 | Round 9 | CHAGAS | 13 | 3♣x | ♠A | -3 | -4 |
| -5.7 | Round 5 | PAVLICEK | 21 | 6♣ | ♥2 | = | +2 |
| -5.9 | Round 7 | NICKELL | 14 | 4♠ | ♥5 | +2 | -11 |
| -6.1 | Round 4 | DIAMOND | 20 | 2♣ | ♣3 | -3 | -9 |
| -6.5 | Round 3 | PD TIMES | 3 | 2♦x | ♥A | -2 | -4 |
| -6.9 | Round 10 | STRUL | 27 | 4♥ | ♦8 | = | +0 |