🇺🇸 CHOW Helen · USA1
vs par split: bidding -0.73 · play -0.22
Strength of schedule: opponents averaged +0.10/bd (a tough draw) → opponent-adjusted -0.80/bd
Card play — on target: opening leads 77.8% #67 of 87 · declarer play 81.2% #16 of 87 · defence 73.3% #74 of 87
Bidding activity — not a pass: 42.6% #45 of 87 (72/169)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 60.0% (5) | 84.6% (13) |
| Declarer play | 70.0% (10) | 100.0% (6) |
| Defence | 66.7% (9) | 76.2% (21) |
Opening leads by suit led: ♠ 75.0% (4) · ♥ 88.9% (9) · ♣ 60.0% (5)
vs par by strain: NT -3.30 (27) · a suit +0.78 (37)
vs par by level: part-score -0.74 (27) · game -2.29 (34) · slam +12.67 (3)
By role: declaring -1.32/bd (-3.09 vs par · 34) · defending -0.43/bd (+1.50 vs par · 30)
By vulnerability: vulnerable -0.55/bd (+0.34 vs par · 32) · not vulnerable -1.25/bd (-2.22 vs par · 32)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | N.Qian | J.Bakhshi – C.Zhao | Open | 8 | -0.2 | -0.03 | -1.12 |
| Round 3 | N.Qian | B.Seah – X.Lin | Open | 8 | -6.1 | -0.76 | -1.25 |
| Round 4 | N.Qian | E.Morawska – Z.Trojan | Closed | 8 | -11.8 | -1.48 | +0.62 |
| Round 6 | N.Qian | L.De Wijs – S.De Wijs | Closed | 8 | -14.6 | -1.82 | -3.00 |
| Round 7 | N.Qian | M.Bultel – E.Nugues | Closed | 8 | +18.7 | +2.34 | +5.00 |
| Round 10 | N.Qian | H.Mraz – E.Torok | Closed | 8 | -7.6 | -0.95 | -1.62 |
| Round 11 | N.Qian | C.Pan – S.Jiang | Open | 8 | -13.6 | -1.70 | -4.00 |
| Round 13 | N.Qian | E.Plana – M.Saegrov | Closed | 8 | -22.5 | -2.81 | -2.12 |
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 4 | 🇵🇱 POLAND | 29 | 6♦ | ♥A | -1 | +13 |
| +8.7 | Round 7 | 🇫🇷 FRANCE | 31 | 4♠ | ♠6 | -1 | +10 |
| +8.5 | Round 1 | 🇺🇸 USA2 | 4 | 3♥ | ♠T | -5 | +8 |
| +7.9 | Round 13 | 🇳🇴 NORWAY | 30 | 4♠ | ♥6 | -1 | +11 |
| +5.0 | Round 7 | 🇫🇷 FRANCE | 28 | 6♠ | ♣T | -1 | +14 |
| +4.5 | Round 10 | 🇭🇺 HUNGARY | 23 | 3NT | ♥5 | = | -1 |
| +4.4 | Round 11 | 🇨🇳 CHINA | 14 | 4♥ | ♦2 | +1 | +0 |
| +4.3 | Round 3 | 🇸🇬 SINGAPORE | 18 | 5♣ | ♥K | -1 | -2 |
| +3.2 | Round 6 | 🇳🇱 NETHERLANDS | 17 | 3♠ | ♦5 | = | +1 |
| +3.2 | Round 7 | 🇫🇷 FRANCE | 26 | 2NT | ♥8 | -1 | +5 |
| +2.4 | Round 11 | 🇨🇳 CHINA | 15 | 2♠ | ♥5 | +1 | +0 |
| +2.2 | Round 1 | 🇺🇸 USA2 | 6 | 1NT | ♥3 | -1 | +4 |
| +2.1 | Round 7 | 🇫🇷 FRANCE | 32 | 5♦ | ♠A | +1 | +10 |
| +2.1 | Round 10 | 🇭🇺 HUNGARY | 17 | 2♠ | ♦K | +1 | +0 |
| +1.9 | Round 6 | 🇳🇱 NETHERLANDS | 18 | 3♦ | . | = | +0 |
| +1.8 | Round 7 | 🇫🇷 FRANCE | 27 | 3♠ | ♣2 | +1 | -6 |
| +1.7 | Round 11 | 🇨🇳 CHINA | 12 | 3NT | ♣5 | +2 | +0 |
| +1.3 | Round 4 | 🇵🇱 POLAND | 26 | 2♦ | ♣4 | +2 | +11 |
| +1.3 | Round 4 | 🇵🇱 POLAND | 27 | 2NT | ♠T | +1 | -7 |
| +1.1 | Round 7 | 🇫🇷 FRANCE | 25 | 3♥ | ♥K | +2 | +7 |
| +1.1 | Round 7 | 🇫🇷 FRANCE | 30 | 3NT | ♦5 | +2 | +0 |
| +1.1 | Round 10 | 🇭🇺 HUNGARY | 19 | 3NT | ♥9 | = | +0 |
| +1.0 | Round 3 | 🇸🇬 SINGAPORE | 23 | 4♥ | ♣Q | +1 | +0 |
| +1.0 | Round 6 | 🇳🇱 NETHERLANDS | 20 | 1♠ | ♣Q | +2 | +0 |
| +0.9 | Round 13 | 🇳🇴 NORWAY | 28 | 4♠ | ♣Q | = | +6 |
| +0.5 | Round 10 | 🇭🇺 HUNGARY | 20 | 1NT | ♥5 | = | +1 |
| +0.3 | Round 1 | 🇺🇸 USA2 | 3 | 3♣ | ♦7 | -2 | -2 |
| +0.3 | Round 3 | 🇸🇬 SINGAPORE | 19 | 1NT | ♠Q | -1 | +2 |
| +0.2 | Round 10 | 🇭🇺 HUNGARY | 21 | 2NT | ♣T | = | +0 |
| +0.1 | Round 3 | 🇸🇬 SINGAPORE | 20 | 3NT | ♦5 | +1 | +1 |
| -0.0 | Round 1 | 🇺🇸 USA2 | 7 | 4♠ | ♦Q | = | +0 |
| -0.0 | Round 1 | 🇺🇸 USA2 | 8 | 1NT | ♥5 | -2 | -8 |
| -0.3 | Round 3 | 🇸🇬 SINGAPORE | 21 | 1NT | ♣A | +2 | +1 |
| -0.3 | Round 3 | 🇸🇬 SINGAPORE | 22 | 3NT | ♣8 | = | +0 |
| -0.4 | Round 6 | 🇳🇱 NETHERLANDS | 24 | 2♦ | ♣5 | = | -1 |
| -0.7 | Round 4 | 🇵🇱 POLAND | 25 | 2♠ | ♥T | +3 | +6 |
| -0.7 | Round 11 | 🇨🇳 CHINA | 13 | 3NT | ♦3 | = | -2 |
| -1.3 | Round 11 | 🇨🇳 CHINA | 16 | 3♠ | ♥Q | +2 | -9 |
| -1.9 | Round 11 | 🇨🇳 CHINA | 9 | 1NT | ♦3 | -1 | -5 |
| -2.0 | Round 10 | 🇭🇺 HUNGARY | 22 | 5♠ | ♥2 | +1 | +1 |
| -2.1 | Round 6 | 🇳🇱 NETHERLANDS | 21 | 3NT | ♥5 | = | -11 |
| -2.2 | Round 3 | 🇸🇬 SINGAPORE | 24 | 4♠ | ♥2 | -1 | -5 |
| -2.5 | Round 13 | 🇳🇴 NORWAY | 29 | 3♣ | ♦K | +1 | +0 |
| -2.7 | Round 6 | 🇳🇱 NETHERLANDS | 19 | 4♥ | ♣J | +1 | -1 |
| -3.0 | Round 1 | 🇺🇸 USA2 | 1 | 4♠x | ♣2 | -2 | +4 |
| -3.1 | Round 1 | 🇺🇸 USA2 | 2 | 2♠ | ♦Q | +1 | +0 |
| -3.3 | Round 13 | 🇳🇴 NORWAY | 27 | 4♥ | ♣3 | +1 | +0 |
| -3.5 | Round 4 | 🇵🇱 POLAND | 32 | 6NT | ♦7 | = | +11 |
| -3.9 | Round 6 | 🇳🇱 NETHERLANDS | 22 | 3NT | ♣J | +2 | -2 |
| -4.3 | Round 7 | 🇫🇷 FRANCE | 29 | 4♠ | ♣9 | +1 | +0 |
| -4.5 | Round 4 | 🇵🇱 POLAND | 31 | 2NT | ♦Q | -3 | -6 |
| -5.1 | Round 1 | 🇺🇸 USA2 | 5 | 4♠ | ♥T | +1 | -15 |
| -5.2 | Round 13 | 🇳🇴 NORWAY | 25 | 3NT | ♥8 | -1 | -6 |
| -5.6 | Round 10 | 🇭🇺 HUNGARY | 24 | 4♥ | ♠A | = | +0 |
| -5.7 | Round 13 | 🇳🇴 NORWAY | 26 | 2♠ | ♦Q | -2 | -7 |
| -7.1 | Round 13 | 🇳🇴 NORWAY | 32 | 3NT | ♠J | -2 | -8 |
| -7.5 | Round 4 | 🇵🇱 POLAND | 30 | 3NT | ♣T | +1 | -8 |
| -7.5 | Round 13 | 🇳🇴 NORWAY | 31 | 4♠ | ♥A | = | -13 |
| -8.3 | Round 4 | 🇵🇱 POLAND | 28 | 2NT | ♠Q | +2 | -15 |
| -8.4 | Round 10 | 🇭🇺 HUNGARY | 18 | 3NT | ♥9 | -3 | -14 |
| -8.7 | Round 11 | 🇨🇳 CHINA | 10 | 5♠x | ♣A | -3 | -5 |
| -9.0 | Round 3 | 🇸🇬 SINGAPORE | 17 | 4♥ | ♥4 | = | -7 |
| -9.5 | Round 11 | 🇨🇳 CHINA | 11 | 3NT | ♣3 | -5 | -11 |
| -11.6 | Round 6 | 🇳🇱 NETHERLANDS | 23 | 3NT | ♣J | = | -10 |