🇯🇵 YAMAZAKI Nana · JAPAN
25rank
+50.9Butler · 96 bds
+0.53per board
±4.9swing
+0.47vs par /bd · #22/87
+0.61adjusted /bd
by round
vs par split: bidding +0.82 · play -0.35
Strength of schedule: opponents averaged +0.08/bd (a tough draw) → opponent-adjusted +0.61/bd
Card play — on target: opening leads 79.3% #62 of 87 · declarer play 63.6% #74 of 87 · defence 73.5% #73 of 87
Bidding activity — not a pass: 43.2% #40 of 87 (118/273)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 66.7% (12) | 88.2% (17) |
| Declarer play | 37.5% (8) | 78.6% (14) |
| Defence | 73.3% (15) | 73.5% (34) |
Opening leads by suit led: ♠ 75.0% (4) · ♥ 75.0% (8) · ♦ 80.0% (10) · ♣ 85.7% (7)
vs par by strain: NT -0.57 (28) · a suit +0.90 (68)
vs par by level: part-score -0.30 (37) · game +0.49 (51) · slam +3.88 (8)
By role: declaring +0.44/bd (-0.96 vs par · 47) · defending +0.61/bd (+1.84 vs par · 49)
By vulnerability: vulnerable +0.21/bd (+1.04 vs par · 48) · not vulnerable +0.85/bd (-0.10 vs par · 48)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | Y.Inamura | F.Hegyi – D.Kontra | Open | 8 | +8.5 | +1.06 | +2.12 |
| Round 2 | M.Yoshida | M.Van Der Valk – A.Oranje | Open | 8 | +6.1 | +0.76 | +1.12 |
| Round 4 | M.Hirono | K.Sullivan – E.Su | Closed | 8 | -6.8 | -0.85 | -2.25 |
| Round 5 | F.Sasaki | Y.Chen – X.Ruan | Open | 8 | +17.7 | +2.21 | +2.75 |
| Round 6 | Y.Inamura | E.Morawska – Z.Trojan | Closed | 8 | +9.7 | +1.21 | +2.25 |
| Round 7 | M.Yoshida | W.Yeung – Y.Tse | Open | 8 | +10.4 | +1.30 | +4.25 |
| Round 9 | M.Hirono | B.Seah – X.Lin | Closed | 8 | +22.1 | +2.76 | +2.50 |
| Round 10 | F.Sasaki | S.Capobianco – E.Dalpozzo | Open | 8 | +0.6 | +0.07 | -0.50 |
| Round 12 | M.Yoshida | K.Brekke – S.Sjodal | Closed | 8 | -21.8 | -2.73 | -5.75 |
| Round 13 | Y.Inamura | C.Pedersen – L.Jacobsen | Closed | 8 | -1.0 | -0.12 | -0.88 |
| Round 14 | M.Hirono | L.Kearney – D.Coley | Closed | 8 | +7.8 | +0.97 | +0.88 |
| Round 15 | Y.Inamura | K.Helmbold – A.Donnellan | Open | 8 | -2.4 | -0.30 | -0.88 |
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 |
|---|---|---|---|---|---|---|---|
| +13.9 | Round 9 | 🇸🇬 SINGAPORE | 13 | 6♣ | ♦J | -1 | +20 |
| +13.8 | Round 1 | 🇭🇺 HUNGARY | 3 | 3♥x | ♣3 | -4 | +14 |
| +11.5 | Round 5 | 🇨🇳 CHINA | 5 | 4♥x | ♠7 | = | +10 |
| +10.9 | Round 9 | 🇸🇬 SINGAPORE | 10 | 6♦ | ♥2 | = | +13 |
| +10.1 | Round 5 | 🇨🇳 CHINA | 6 | 3NT | ♥6 | -3 | +14 |
| +8.5 | Round 10 | 🇮🇹 ITALY | 22 | 6♠ | ♥3 | = | +11 |
| +8.3 | Round 7 | 🇭🇰 HONG KONG CHINA | 25 | 3NT | ♦2 | -2 | +12 |
| +7.7 | Round 6 | 🇵🇱 POLAND | 23 | 5♣ | ♠2 | -3 | +4 |
| +6.5 | Round 10 | 🇮🇹 ITALY | 24 | 5♣ | ♥7 | -2 | +11 |
| +6.3 | Round 15 | 🇺🇸 USA1 | 16 | 3NT | ♠2 | = | +7 |
| +5.4 | Round 2 | 🇳🇱 NETHERLANDS | 15 | 4♠ | ♥7 | -2 | +11 |
| +5.3 | Round 14 | 🏴 ENGLAND | 5 | 6NT | ♦6 | -1 | +11 |
| +5.1 | Round 1 | 🇭🇺 HUNGARY | 5 | 4♠ | ♥8 | +1 | +15 |
| +5.1 | Round 7 | 🇭🇰 HONG KONG CHINA | 32 | 4♠x | ♣A | -3 | +12 |
| +5.1 | Round 14 | 🏴 ENGLAND | 2 | 5♣ | ♠K | -1 | +5 |
| +4.9 | Round 6 | 🇵🇱 POLAND | 20 | 3♦ | ♥3 | -1 | +6 |
| +4.9 | Round 7 | 🇭🇰 HONG KONG CHINA | 31 | 3♠ | ♦A | = | +7 |
| +4.8 | Round 2 | 🇳🇱 NETHERLANDS | 10 | 2♠ | ♦K | +3 | +7 |
| +4.8 | Round 7 | 🇭🇰 HONG KONG CHINA | 29 | 3♠ | ♠6 | +2 | +10 |
| +4.8 | Round 10 | 🇮🇹 ITALY | 21 | 3NT | ♦3 | -1 | +5 |
| +4.7 | Round 2 | 🇳🇱 NETHERLANDS | 9 | 4♠x | ♦5 | = | +5 |
| +3.7 | Round 9 | 🇸🇬 SINGAPORE | 9 | 6♠ | ♠T | = | +0 |
| +3.5 | Round 4 | 🇺🇸 USA2 | 32 | 6NT | ♠4 | = | -11 |
| +3.4 | Round 12 | 🇳🇴 NORWAY | 17 | 3NT | ♠4 | = | +0 |
| +2.9 | Round 4 | 🇺🇸 USA2 | 28 | 3NT | ♠Q | +1 | +14 |
| +2.9 | Round 6 | 🇵🇱 POLAND | 22 | 3NT | ♣8 | +1 | +1 |
| +2.8 | Round 9 | 🇸🇬 SINGAPORE | 16 | 4♠ | ♦4 | -2 | -5 |
| +2.8 | Round 14 | 🏴 ENGLAND | 1 | 4♠ | ♠3 | +2 | +11 |
| +2.7 | Round 15 | 🇺🇸 USA1 | 14 | 5♣ | ♥K | -1 | -2 |
| +2.6 | Round 13 | 🇩🇰 DENMARK | 29 | 2♠ | ♥4 | +1 | +0 |
| +2.5 | Round 13 | 🇩🇰 DENMARK | 30 | 4♠ | ♥6 | = | -1 |
| +2.4 | Round 5 | 🇨🇳 CHINA | 8 | 2♥ | ♠K | = | +0 |
| +2.3 | Round 13 | 🇩🇰 DENMARK | 27 | 4♥ | ♦J | = | -1 |
| +2.1 | Round 10 | 🇮🇹 ITALY | 19 | 3NT | ♦6 | +1 | +1 |
| +2.0 | Round 2 | 🇳🇱 NETHERLANDS | 12 | 4♥ | ♠A | -1 | +5 |
| +1.7 | Round 6 | 🇵🇱 POLAND | 19 | 4♥ | ♣J | = | +0 |
| +1.5 | Round 4 | 🇺🇸 USA2 | 31 | 3♥ | ♦Q | -1 | +4 |
| +1.5 | Round 15 | 🇺🇸 USA1 | 11 | 4♠ | ♦4 | +2 | +1 |
| +1.3 | Round 15 | 🇺🇸 USA1 | 15 | 3NT | ♦5 | +1 | -1 |
| +1.1 | Round 4 | 🇺🇸 USA2 | 30 | 3♠ | ♥K | = | +1 |
| +1.1 | Round 7 | 🇭🇰 HONG KONG CHINA | 30 | 5♠ | ♦2 | = | +0 |
| +1.1 | Round 14 | 🏴 ENGLAND | 4 | 3♥ | ♣J | -1 | -1 |
| +1.0 | Round 1 | 🇭🇺 HUNGARY | 6 | 1♣ | ♥5 | = | -1 |
| +0.8 | Round 5 | 🇨🇳 CHINA | 7 | 4♠ | ♥3 | = | +0 |
| +0.7 | Round 4 | 🇺🇸 USA2 | 26 | 1NT | ♠A | +3 | -10 |
| +0.7 | Round 9 | 🇸🇬 SINGAPORE | 15 | 3♣ | ♥7 | -2 | +0 |
| +0.5 | Round 5 | 🇨🇳 CHINA | 2 | 4♥ | ♣A | -1 | +1 |
| +0.5 | Round 14 | 🏴 ENGLAND | 8 | 2NT | ♣T | = | +0 |
| +0.4 | Round 12 | 🇳🇴 NORWAY | 20 | 4♠ | ♦Q | -2 | -9 |
| +0.2 | Round 6 | 🇵🇱 POLAND | 21 | 3NT | ♥6 | +2 | +10 |
| +0.0 | Round 1 | 🇭🇺 HUNGARY | 7 | 4♠ | ♦A | = | +0 |
| +0.0 | Round 1 | 🇭🇺 HUNGARY | 8 | 1NT | ♥2 | -2 | +8 |
| -0.1 | Round 5 | 🇨🇳 CHINA | 3 | 4♠ | ♦5 | = | +0 |
| -0.3 | Round 4 | 🇺🇸 USA2 | 27 | 3♦ | ♠Q | = | +7 |
| -0.4 | Round 7 | 🇭🇰 HONG KONG CHINA | 27 | 3♥ | ♦T | -2 | -8 |
| -0.4 | Round 12 | 🇳🇴 NORWAY | 18 | 1NT | ♥4 | -1 | -3 |
| -0.4 | Round 12 | 🇳🇴 NORWAY | 24 | 4♥ | ♣K | = | +0 |
| -0.5 | Round 10 | 🇮🇹 ITALY | 20 | 1NT | ♥6 | +1 | +0 |
| -0.6 | Round 15 | 🇺🇸 USA1 | 9 | 5♥ | ♦T | +1 | -11 |
| -0.7 | Round 6 | 🇵🇱 POLAND | 24 | 1NT | ♣6 | +1 | +0 |
| -0.7 | Round 9 | 🇸🇬 SINGAPORE | 11 | 3NT | ♥8 | = | -2 |
| -0.7 | Round 14 | 🏴 ENGLAND | 3 | 3♦ | ♣7 | = | -6 |
| -0.9 | Round 13 | 🇩🇰 DENMARK | 28 | 4♠ | ♣Q | = | -6 |
| -1.2 | Round 13 | 🇩🇰 DENMARK | 32 | 2NT | ♦4 | +2 | -1 |
| -1.3 | Round 5 | 🇨🇳 CHINA | 1 | 2♠ | ♥8 | -1 | +4 |
| -1.4 | Round 13 | 🇩🇰 DENMARK | 26 | 2♥ | ♦A | = | +0 |
| -1.4 | Round 13 | 🇩🇰 DENMARK | 31 | 2♠ | ♥A | +2 | +7 |
| -1.9 | Round 7 | 🇭🇰 HONG KONG CHINA | 26 | 1NT | ♥4 | = | +1 |
| -2.0 | Round 1 | 🇭🇺 HUNGARY | 4 | 3♣ | ♣3 | -2 | -2 |
| -2.1 | Round 2 | 🇳🇱 NETHERLANDS | 11 | 1NT | ♦K | -1 | -8 |
| -2.1 | Round 2 | 🇳🇱 NETHERLANDS | 14 | 4♠ | ♣5 | = | -8 |
| -2.2 | Round 14 | 🏴 ENGLAND | 7 | 3♥ | ♣K | = | -7 |
| -2.3 | Round 6 | 🇵🇱 POLAND | 17 | 3♦ | ♣K | = | +0 |
| -2.3 | Round 12 | 🇳🇴 NORWAY | 21 | 4♥ | ♥T | +1 | -1 |
| -2.8 | Round 9 | 🇸🇬 SINGAPORE | 14 | 2♥ | ♦K | +1 | +0 |
| -3.3 | Round 1 | 🇭🇺 HUNGARY | 2 | 4♠ | ♣3 | -1 | -6 |
| -3.3 | Round 2 | 🇳🇱 NETHERLANDS | 13 | 4♥ | ♣A | -2 | -2 |
| -3.3 | Round 2 | 🇳🇱 NETHERLANDS | 16 | 3♦ | ♣A | +2 | -1 |
| -3.3 | Round 15 | 🇺🇸 USA1 | 13 | 4♥ | ♠4 | +2 | -1 |
| -3.5 | Round 13 | 🇩🇰 DENMARK | 25 | 5♥x | ♣K | -2 | -5 |
| -3.5 | Round 15 | 🇺🇸 USA1 | 10 | 4♠ | ♥8 | +1 | +12 |
| -4.1 | Round 14 | 🏴 ENGLAND | 6 | 3♥ | ♣T | +1 | -6 |
| -4.7 | Round 6 | 🇵🇱 POLAND | 18 | 4♠x | ♦9 | -1 | -3 |
| -4.7 | Round 10 | 🇮🇹 ITALY | 17 | 1♥ | ♦K | -2 | -6 |
| -5.4 | Round 12 | 🇳🇴 NORWAY | 23 | 2♠ | ♦2 | = | -12 |
| -6.1 | Round 1 | 🇭🇺 HUNGARY | 1 | 5♣ | ♠K | -2 | -11 |
| -6.1 | Round 4 | 🇺🇸 USA2 | 25 | 4♠ | ♥A | -1 | -10 |
| -6.2 | Round 5 | 🇨🇳 CHINA | 4 | 3♥ | ♠T | = | -7 |
| -6.4 | Round 9 | 🇸🇬 SINGAPORE | 12 | 4♠ | ♦2 | +1 | -6 |
| -6.8 | Round 12 | 🇳🇴 NORWAY | 19 | 2♥ | ♥7 | -1 | -8 |
| -6.8 | Round 15 | 🇺🇸 USA1 | 12 | 3NT | ♦3 | -1 | -12 |
| -7.7 | Round 10 | 🇮🇹 ITALY | 23 | 3NT | ♥7 | -1 | -12 |
| -8.4 | Round 10 | 🇮🇹 ITALY | 18 | 3NT | ♥Q | -3 | -14 |
| -10.1 | Round 4 | 🇺🇸 USA2 | 29 | 3NT | ♥9 | -1 | -13 |
| -10.3 | Round 12 | 🇳🇴 NORWAY | 22 | 6NT | ♥A | = | -13 |
| -11.5 | Round 7 | 🇭🇰 HONG KONG CHINA | 28 | 6NT | ♦J | = | +0 |