YAMADA Kazuhiko · JAPAN SENIOR
vs par split: bidding -0.65 · play +0.27
Strength of schedule: opponents averaged +0.25/bd (a tough draw) → opponent-adjusted -0.19/bd
Card play — on target: opening leads 94.1% #10 of 534 · declarer play 50.0% #529 of 534 · defence 86.7% #220 of 535
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 66.7% (3) | 100.0% (14) |
| Declarer play | 75.0% (4) | 37.5% (8) |
| Defence | 83.3% (6) | 87.5% (24) |
Opening leads by suit led: ♠ 100.0% (7) · ♥ 100.0% (3) · ♦ 75.0% (4) · ♣ 100.0% (3)
vs par by strain: NT +0.17 (18) · a suit -0.62 (42)
vs par by level: part-score -0.83 (23) · game +0.88 (33) · slam -8.25 (4)
By role: declaring +0.07/bd (-2.30 vs par · 30) · defending -0.96/bd (+1.53 vs par · 30)
By vulnerability: vulnerable -1.03/bd (-0.69 vs par · 29) · not vulnerable +0.10/bd (-0.10 vs par · 31)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 7 | M.Ino | M.Bell – S.Bell | Closed | 10 | +0.9 | +0.09 | -0.10 |
| Round 8 | M.Ino | C.Yeh – Y.Zhang | Closed | 10 | -16.1 | -1.61 | -1.80 |
| Round 10 | A.Omasa | A.Waszkiewicz – J.Jagodzinski | Open | 10 | -14.5 | -1.45 | +0.40 |
| Round 12 | M.Ino | E.Khonicheva – A.Gulevich | Open | 10 | +5.2 | +0.52 | +0.50 |
| Round 13 | M.Ino | C.Lee – M.Schireson | Closed | 10 | -3.4 | -0.34 | -2.50 |
| Round 15 | M.Ino | S.Peterkin – S.Punch | Closed | 10 | +1.2 | +0.12 | +1.20 |
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 |
|---|---|---|---|---|---|---|---|
| +10.6 | Round 13 | OHMCONNECT | 8 | 3NT | ♦J | = | +11 |
| +8.4 | Round 7 | BELL | 3 | 3NT | ♦Q | -5 | +12 |
| +7.1 | Round 15 | PUNCH | 29 | 5♦ | ♣K | -1 | +12 |
| +6.7 | Round 12 | MOET | 27 | 3NTx | ♣3 | -2 | +10 |
| +6.0 | Round 15 | PUNCH | 22 | 4♥ | ♦4 | = | +7 |
| +4.7 | Round 10 | POLAND UNIVERSITY | 1 | 3NT | ♦3 | +1 | +0 |
| +4.1 | Round 7 | BELL | 10 | 2♥ | ♠K | -2 | +2 |
| +4.1 | Round 10 | POLAND UNIVERSITY | 5 | 4♠ | ♦K | -3 | +7 |
| +3.5 | Round 12 | MOET | 30 | 3♠ | ♠2 | +1 | +6 |
| +3.5 | Round 13 | OHMCONNECT | 6 | 3♥ | ♣K | -1 | +0 |
| +3.2 | Round 13 | OHMCONNECT | 5 | 3NT | ♥5 | = | +3 |
| +2.8 | Round 7 | BELL | 5 | 2♠ | ♣K | = | +0 |
| +2.7 | Round 10 | POLAND UNIVERSITY | 4 | 4♠ | ♦K | -1 | +6 |
| +2.2 | Round 8 | YBM | 14 | 3♥ | ♣A | = | +1 |
| +2.2 | Round 8 | YBM | 15 | 6NT | ♥Q | = | -11 |
| +2.0 | Round 13 | OHMCONNECT | 4 | 4♠ | ♥10 | +2 | +1 |
| +1.7 | Round 15 | PUNCH | 27 | 4♥ | ♠8 | +1 | +0 |
| +1.5 | Round 10 | POLAND UNIVERSITY | 7 | 3♦ | ♠9 | -1 | +5 |
| +1.4 | Round 15 | PUNCH | 25 | 4♥ | ♦K | = | -1 |
| +1.3 | Round 7 | BELL | 2 | 2NT | ♠J | = | +0 |
| +1.2 | Round 8 | YBM | 13 | 1NT | ♠A | +2 | +1 |
| +1.0 | Round 7 | BELL | 8 | 4♠ | ♥A | -3 | +1 |
| +0.9 | Round 12 | MOET | 23 | 3NT | ♠7 | +2 | +0 |
| +0.8 | Round 13 | OHMCONNECT | 2 | 5♦ | ♠Q | +1 | -10 |
| +0.7 | Round 12 | MOET | 22 | 4♠ | ♣K | = | -1 |
| +0.7 | Round 15 | PUNCH | 21 | 4♠ | ♦10 | +2 | +1 |
| +0.5 | Round 12 | MOET | 28 | 3♠ | ♦5 | = | +0 |
| +0.4 | Round 12 | MOET | 24 | 1NT | ♦5 | +1 | -7 |
| +0.3 | Round 12 | MOET | 25 | 2♠ | ♣10 | = | -1 |
| -0.0 | Round 10 | POLAND UNIVERSITY | 9 | 2♦ | ♠A | = | -1 |
| -0.1 | Round 13 | OHMCONNECT | 3 | 6NT | ♣5 | +1 | -11 |
| -0.3 | Round 10 | POLAND UNIVERSITY | 8 | 3♦ | ♥7 | +2 | +7 |
| -0.3 | Round 15 | PUNCH | 24 | 2NT | ♣2 | = | -1 |
| -0.5 | Round 12 | MOET | 29 | 4♥ | ♠A | +1 | +0 |
| -0.7 | Round 8 | YBM | 12 | 4♠ | ♣10 | -1 | -4 |
| -0.8 | Round 7 | BELL | 7 | 2♥ | ♠9 | +1 | -10 |
| -0.8 | Round 8 | YBM | 16 | 3♦ | ♠A | -2 | -11 |
| -1.0 | Round 8 | YBM | 20 | 3NT | ♠3 | +3 | +13 |
| -1.2 | Round 7 | BELL | 6 | 2♦ | ♣6 | +2 | +0 |
| -1.5 | Round 15 | PUNCH | 30 | 2♦ | ♣A | -2 | -1 |
| -2.1 | Round 10 | POLAND UNIVERSITY | 3 | 2♥ | ♦J | +1 | +10 |
| -2.1 | Round 12 | MOET | 26 | 3NT | ♥2 | +3 | -2 |
| -2.8 | Round 8 | YBM | 18 | 4♥ | ♣A | +1 | +0 |
| -2.9 | Round 15 | PUNCH | 23 | 2♣ | ♦K | -2 | -3 |
| -3.5 | Round 13 | OHMCONNECT | 10 | 3NT | ♣3 | -1 | -6 |
| -3.6 | Round 10 | POLAND UNIVERSITY | 10 | 4♥ | ♣K | -1 | -6 |
| -3.8 | Round 7 | BELL | 9 | 7♣ | ♣4 | = | +2 |
| -4.2 | Round 7 | BELL | 1 | 4♥ | ♠Q | = | -8 |
| -4.3 | Round 8 | YBM | 17 | 4♥x | ♣2 | -2 | +3 |
| -4.4 | Round 15 | PUNCH | 26 | 3NT | ♠4 | = | +1 |
| -4.8 | Round 8 | YBM | 11 | 4♥ | ♦K | = | +0 |
| -5.2 | Round 12 | MOET | 21 | 4♥ | ♠K | = | +0 |
| -5.3 | Round 13 | OHMCONNECT | 9 | 4♦ | ♥K | = | -1 |
| -6.4 | Round 13 | OHMCONNECT | 7 | 4♥ | ♣5 | = | +0 |
| -6.6 | Round 15 | PUNCH | 28 | 2♥x | ♣4 | -2 | -3 |
| -6.7 | Round 7 | BELL | 4 | 3NT | ♦10 | = | +0 |
| -7.3 | Round 8 | YBM | 19 | 3NT | ♠3 | -3 | -10 |
| -8.2 | Round 13 | OHMCONNECT | 1 | 2♥x | ♠3 | +1 | -12 |
| -10.6 | Round 10 | POLAND UNIVERSITY | 6 | 6♣ | ♦J | = | -13 |
| -10.9 | Round 10 | POLAND UNIVERSITY | 2 | 5♣ | ♠6 | -4 | -11 |