🇨🇦 ZHAO Martin · CANADA
100rank
-60.5Butler · 96 bds
-0.63per board
±4.1swing
-1.02vs par /bd · #100/107
-0.61adjusted /bd
by round
vs par split: bidding -0.67 · play -0.35
Strength of schedule: opponents averaged +0.02/bd (an average draw) → opponent-adjusted -0.61/bd
Card play — on target: opening leads 81.8% #49 of 107 · declarer play 75.9% #46 of 107 · defence 90.7% #18 of 107
Bidding activity — not a pass: 45.7% #33 of 107 (129/282)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 66.7% (3) | 84.2% (19) |
| Declarer play | 85.7% (7) | 72.7% (22) |
| Defence | 81.8% (11) | 93.8% (32) |
Opening leads by suit led: ♠ 83.3% (6) · ♥ 66.7% (6) · ♦ 85.7% (7) · ♣ 100.0% (3)
vs par by strain: NT +0.57 (21) · a suit -1.47 (75)
vs par by level: part-score +0.03 (37) · game -1.90 (50) · slam -0.44 (9)
By role: declaring -0.72/bd (-2.77 vs par · 53) · defending -0.51/bd (+1.14 vs par · 43)
By vulnerability: vulnerable -1.00/bd (-0.73 vs par · 48) · not vulnerable -0.26/bd (-1.31 vs par · 48)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | O.Laufer | M.Sieredzinski – H.Watkins | Closed | 8 | -4.2 | -0.53 | -1.25 |
| Round 4 | O.Laufer | R.Jahagirdar – V.Patel | Closed | 8 | +7.4 | +0.93 | +2.12 |
| Round 5 | O.Laufer | Y.Wen – J.Chen | Closed | 8 | +11.3 | +1.41 | +0.50 |
| Round 6 | O.Laufer | W.Bak – J.Bazyluk | Open | 8 | +0.3 | +0.04 | +0.12 |
| Round 7 | O.Laufer | P.Promjan – S.Kocharoen | Open | 8 | -5.8 | -0.72 | -2.00 |
| Round 8 | O.Laufer | L.Sanderson – D.Winter | Closed | 8 | -3.1 | -0.39 | -2.00 |
| Round 10 | O.Laufer | K.Takizawa – Y.Song | Open | 8 | -6.2 | -0.78 | -1.38 |
| Round 11 | O.Laufer | T.Van De Paverd – O.Nijssen | Open | 8 | -6.3 | -0.79 | -0.12 |
| Round 14 | O.Laufer | F.Kolesnik – M.Xu | Closed | 8 | -27.0 | -3.38 | -3.88 |
| Round 16 | O.Laufer | A.Rolf-Larsen – D.Brandgaard | Open | 8 | -6.2 | -0.78 | -1.00 |
| Round 17 | O.Laufer | A.Abragi – I.Lichtenstein | Open | 8 | -11.2 | -1.40 | -2.62 |
| Round 19 | O.Laufer | J.Yan – E.Ng | Open | 8 | -9.5 | -1.19 | -0.75 |
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 |
|---|---|---|---|---|---|---|---|
| +11.3 | Round 16 | 🇩🇰 DENMARK | 26 | 4♠ | ♦Q | = | +11 |
| +11.1 | Round 8 | 🏴 ENGLAND | 32 | 6♥ | ♠K | = | +8 |
| +10.2 | Round 10 | 🇯🇵 JAPAN | 11 | 6♣ | ♥8 | -1 | +11 |
| +8.8 | Round 11 | 🇳🇱 NETHERLANDS | 19 | 3NT | ♦Q | -1 | +10 |
| +7.3 | Round 5 | 🇨🇳 CHINA | 6 | 3NT | ♥5 | = | +0 |
| +5.2 | Round 19 | 🇭🇰 HONG KONG CHINA | 18 | 3♦ | ♥2 | = | +5 |
| +4.7 | Round 1 | 🇦🇺 AUSTRALIA | 2 | 4♠ | ♠6 | -2 | +8 |
| +4.7 | Round 4 | 🇮🇳 INDIA | 30 | 3♠ | ♥K | -2 | +5 |
| +4.7 | Round 5 | 🇨🇳 CHINA | 2 | 4♥ | ♠K | -1 | -1 |
| +4.3 | Round 19 | 🇭🇰 HONG KONG CHINA | 22 | 3♣x | ♥K | -2 | +4 |
| +4.2 | Round 4 | 🇮🇳 INDIA | 28 | 6♣ | ♠Q | +1 | -11 |
| +3.6 | Round 6 | 🇵🇱 POLAND | 15 | 4♠ | ♥8 | = | +0 |
| +3.5 | Round 7 | 🇹🇭 THAILAND | 17 | 3♥ | ♠A | -2 | +0 |
| +2.5 | Round 4 | 🇮🇳 INDIA | 31 | 1NT | ♣5 | = | -1 |
| +2.5 | Round 8 | 🏴 ENGLAND | 26 | 3♥ | ♦A | -1 | +0 |
| +2.2 | Round 1 | 🇦🇺 AUSTRALIA | 1 | 4♠x | ♦A | -1 | +8 |
| +2.2 | Round 14 | 🇺🇸 USA1 | 14 | 5♦x | ♣A | -3 | +2 |
| +2.0 | Round 19 | 🇭🇰 HONG KONG CHINA | 24 | 3♦ | ♥Q | +3 | +1 |
| +1.9 | Round 5 | 🇨🇳 CHINA | 8 | 3♥ | ♠K | -1 | +4 |
| +1.9 | Round 8 | 🏴 ENGLAND | 31 | 4♠ | ♦6 | = | +0 |
| +1.8 | Round 4 | 🇮🇳 INDIA | 26 | 2NT | ♠A | = | +11 |
| +1.8 | Round 11 | 🇳🇱 NETHERLANDS | 18 | 4♦ | ♥J | +1 | +10 |
| +1.7 | Round 7 | 🇹🇭 THAILAND | 18 | 3♦ | ♣8 | = | +0 |
| +1.6 | Round 6 | 🇵🇱 POLAND | 16 | 2♦ | ♠7 | +2 | +1 |
| +1.4 | Round 17 | 🇸🇪 SWEDEN | 5 | 3NT | ♣K | +1 | -1 |
| +0.9 | Round 1 | 🇦🇺 AUSTRALIA | 8 | 1NT | ♠2 | -3 | -7 |
| +0.8 | Round 11 | 🇳🇱 NETHERLANDS | 20 | 1NT | ♥Q | +1 | +0 |
| +0.7 | Round 16 | 🇩🇰 DENMARK | 29 | 3♣ | ♦K | +1 | +0 |
| +0.6 | Round 1 | 🇦🇺 AUSTRALIA | 4 | 2♠ | ♣Q | +1 | +0 |
| +0.5 | Round 11 | 🇳🇱 NETHERLANDS | 21 | 1NT | ♣5 | -1 | -1 |
| +0.4 | Round 17 | 🇸🇪 SWEDEN | 3 | 3♣ | ♠K | -1 | +4 |
| +0.3 | Round 1 | 🇦🇺 AUSTRALIA | 7 | 4♠ | ♦A | = | +0 |
| +0.3 | Round 5 | 🇨🇳 CHINA | 4 | 4♥ | ♠T | -1 | +1 |
| +0.3 | Round 6 | 🇵🇱 POLAND | 11 | 1♥ | ♣Q | = | -1 |
| +0.2 | Round 7 | 🇹🇭 THAILAND | 22 | 3NT | ♦4 | = | +0 |
| +0.2 | Round 17 | 🇸🇪 SWEDEN | 8 | 1♦ | ♦T | +2 | +0 |
| +0.1 | Round 1 | 🇦🇺 AUSTRALIA | 3 | 4♦ | ♠K | -3 | -4 |
| +0.1 | Round 10 | 🇯🇵 JAPAN | 10 | 6♠x | ♦4 | -2 | +0 |
| +0.1 | Round 14 | 🇺🇸 USA1 | 12 | 3NT | ♣5 | +2 | +0 |
| -0.0 | Round 16 | 🇩🇰 DENMARK | 28 | 4♠ | ♣Q | = | +6 |
| -0.1 | Round 5 | 🇨🇳 CHINA | 3 | 4♠ | ♦7 | = | +0 |
| -0.2 | Round 14 | 🇺🇸 USA1 | 13 | 4♠ | ♠2 | = | -1 |
| -0.3 | Round 4 | 🇮🇳 INDIA | 27 | 3♥ | ♣4 | +1 | -6 |
| -0.3 | Round 6 | 🇵🇱 POLAND | 12 | 1NT | ♥6 | = | +5 |
| -0.3 | Round 7 | 🇹🇭 THAILAND | 20 | 1♠ | ♠2 | +2 | +0 |
| -0.3 | Round 10 | 🇯🇵 JAPAN | 16 | 3NT | ♦6 | -3 | +6 |
| -0.3 | Round 19 | 🇭🇰 HONG KONG CHINA | 17 | 4♠ | ♦Q | +1 | +0 |
| -0.4 | Round 5 | 🇨🇳 CHINA | 5 | 4♠x | ♦Q | -1 | +5 |
| -0.4 | Round 6 | 🇵🇱 POLAND | 14 | 6♦ | ♦7 | +1 | +2 |
| -0.6 | Round 5 | 🇨🇳 CHINA | 7 | 4♠ | ♦T | = | +0 |
| -0.6 | Round 7 | 🇹🇭 THAILAND | 24 | 2♦ | ♣5 | = | -1 |
| -0.6 | Round 8 | 🏴 ENGLAND | 29 | 4♠ | ♦5 | = | -1 |
| -0.6 | Round 11 | 🇳🇱 NETHERLANDS | 17 | 2♠ | ♣9 | = | +1 |
| -0.9 | Round 8 | 🏴 ENGLAND | 30 | 4♠ | ♠2 | +2 | -1 |
| -1.1 | Round 4 | 🇮🇳 INDIA | 25 | 2♠ | ♥5 | +2 | +6 |
| -1.3 | Round 6 | 🇵🇱 POLAND | 9 | 5♥ | ♦2 | -2 | -7 |
| -1.4 | Round 1 | 🇦🇺 AUSTRALIA | 6 | 1NT | ♥3 | = | +0 |
| -1.4 | Round 17 | 🇸🇪 SWEDEN | 2 | 3♣ | ♥J | +1 | +0 |
| -1.5 | Round 6 | 🇵🇱 POLAND | 13 | 3NT | ♣7 | +3 | +1 |
| -1.5 | Round 16 | 🇩🇰 DENMARK | 27 | 4♥ | ♦J | +1 | +0 |
| -1.6 | Round 10 | 🇯🇵 JAPAN | 15 | 3♣ | ♠2 | -2 | +0 |
| -1.6 | Round 19 | 🇭🇰 HONG KONG CHINA | 23 | 5♦ | ♥A | = | +13 |
| -1.7 | Round 6 | 🇵🇱 POLAND | 10 | 5♣ | ♥A | = | +0 |
| -1.7 | Round 17 | 🇸🇪 SWEDEN | 6 | 4♥ | ♠K | = | +0 |
| -1.8 | Round 4 | 🇮🇳 INDIA | 29 | 3NT | ♥9 | = | +2 |
| -1.8 | Round 5 | 🇨🇳 CHINA | 1 | 3♠ | ♥8 | -2 | -5 |
| -2.0 | Round 7 | 🇹🇭 THAILAND | 21 | 4NT | ♥5 | +1 | -10 |
| -2.1 | Round 16 | 🇩🇰 DENMARK | 30 | 4♠ | ♥4 | +1 | +0 |
| -2.2 | Round 17 | 🇸🇪 SWEDEN | 1 | 4♠ | ♥Q | +2 | -11 |
| -2.3 | Round 10 | 🇯🇵 JAPAN | 14 | 3♥ | ♦Q | -1 | -5 |
| -2.5 | Round 11 | 🇳🇱 NETHERLANDS | 24 | 5♦ | ♠A | -1 | -10 |
| -2.6 | Round 4 | 🇮🇳 INDIA | 32 | 6NT | ♦7 | = | +11 |
| -2.7 | Round 10 | 🇯🇵 JAPAN | 12 | 5♠ | ♦2 | -1 | -6 |
| -2.7 | Round 17 | 🇸🇪 SWEDEN | 4 | 2♣ | ♦4 | -2 | -2 |
| -3.2 | Round 16 | 🇩🇰 DENMARK | 32 | 4♥ | ♠J | -1 | -6 |
| -3.4 | Round 7 | 🇹🇭 THAILAND | 19 | 3NT | ♣6 | +2 | -1 |
| -3.6 | Round 19 | 🇭🇰 HONG KONG CHINA | 21 | 2♠ | ♠2 | = | +0 |
| -4.1 | Round 10 | 🇯🇵 JAPAN | 9 | 6♠ | ♣A | = | +0 |
| -4.2 | Round 14 | 🇺🇸 USA1 | 9 | 1NT | ♦2 | -2 | -7 |
| -4.5 | Round 8 | 🏴 ENGLAND | 25 | 2♥ | ♦3 | +2 | -8 |
| -4.6 | Round 16 | 🇩🇰 DENMARK | 25 | 3NT | ♥7 | -1 | -6 |
| -4.6 | Round 19 | 🇭🇰 HONG KONG CHINA | 19 | 4♥ | ♣K | -1 | -16 |
| -4.9 | Round 7 | 🇹🇭 THAILAND | 23 | 5♣ | ♠2 | -3 | -4 |
| -4.9 | Round 8 | 🏴 ENGLAND | 28 | 6♠ | ♥7 | -1 | -14 |
| -4.9 | Round 14 | 🇺🇸 USA1 | 10 | 4♠x | ♣A | -2 | +3 |
| -5.2 | Round 17 | 🇸🇪 SWEDEN | 7 | 4♠ | ♦6 | +1 | -11 |
| -5.5 | Round 10 | 🇯🇵 JAPAN | 13 | 5♠ | ♣8 | +2 | -17 |
| -5.7 | Round 14 | 🇺🇸 USA1 | 16 | 4♠ | ♥Q | -1 | -12 |
| -5.9 | Round 11 | 🇳🇱 NETHERLANDS | 23 | 3NT | ♥3 | +1 | +0 |
| -6.1 | Round 14 | 🇺🇸 USA1 | 15 | 3♦x | ♠T | -3 | -8 |
| -6.8 | Round 16 | 🇩🇰 DENMARK | 31 | 4♠ | ♥K | = | -13 |
| -7.7 | Round 8 | 🏴 ENGLAND | 27 | 4♠ | ♥2 | = | +0 |
| -8.2 | Round 14 | 🇺🇸 USA1 | 11 | 4♠ | ♣3 | -1 | -8 |
| -9.2 | Round 11 | 🇳🇱 NETHERLANDS | 22 | 6♠ | ♥3 | = | -11 |
| -10.9 | Round 19 | 🇭🇰 HONG KONG CHINA | 20 | 4♠ | ♠K | -1 | -13 |
| -11.6 | Round 1 | 🇦🇺 AUSTRALIA | 5 | 4♠ | ♥T | = | -15 |