🇨🇦 ZHOU Chao · Canada
92rank
-56.7Butler · 70 bds
-0.81per board
±5.0swing
-0.66adjusted /bd
by round
Strength of schedule: opponents averaged +0.15/bd (a tough draw) → opponent-adjusted -0.66/bd
By role: declaring -0.60/bd (43) · defending -1.14/bd (27)
By vulnerability: not vulnerable -0.81/bd (70)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 2 | A.Blagov | I.Veselov – D.Dobrin | Closed | 10 | -19.4 | -1.94 | · |
| Round 4 | A.Blagov | A.Manno – G.Delle Cave | Closed | 10 | +17.5 | +1.75 | · |
| Round 5 | A.Blagov | N.Lhuissier – Q.Robert | Closed | 10 | -13.5 | -1.35 | · |
| Round 8 | A.Blagov | A.Birman – E.Argelazi | Closed | 10 | -12.2 | -1.22 | · |
| Round 10 | A.Blagov | O.Lien – Z.Brescoll | Closed | 10 | +25.0 | +2.50 | · |
| Round 11 | A.Blagov | J.Chiu – K.Fay | Closed | 10 | -35.9 | -3.59 | · |
| Round 15 | A.Blagov | C.Lau – K.Kong | Open | 10 | -18.2 | -1.82 | · |
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 |
|---|---|---|---|---|---|---|---|
| +9.8 | Round 10 | 🇺🇸 USA 2 | 5 | 2♣x | ♠9 | -3 | · |
| +9.3 | Round 4 | 🇮🇹 Italy | 1 | 3N | ♣Q | = | · |
| +8.6 | Round 8 | 🇮🇱 Israel | 20 | 4♥ | ♥4 | = | · |
| +8.5 | Round 5 | 🇫🇷 France | 11 | 5♣x | ♠J | +1 | · |
| +7.5 | Round 10 | 🇺🇸 USA 2 | 10 | 2♠ | ♦A | -2 | · |
| +7.3 | Round 4 | 🇮🇹 Italy | 3 | 2♦x | ♦K | = | · |
| +6.4 | Round 4 | 🇮🇹 Italy | 6 | 3N | ♠J | = | · |
| +5.7 | Round 4 | 🇮🇹 Italy | 7 | 4♦ | ♣K | -1 | · |
| +4.7 | Round 2 | 🇷🇺 Russia | 12 | 3♥ | ♠A | = | · |
| +4.2 | Round 10 | 🇺🇸 USA 2 | 2 | 3♠ | ♥8 | +2 | · |
| +4.2 | Round 15 | 🇭🇰 China Hong Kong | 23 | 2N | ♣6 | -1 | · |
| +4.0 | Round 15 | 🇭🇰 China Hong Kong | 28 | 3N | ♣Q | +2 | · |
| +3.4 | Round 5 | 🇫🇷 France | 14 | 4♥ | ♠J | = | · |
| +3.2 | Round 10 | 🇺🇸 USA 2 | 8 | 6N | ♦J | = | · |
| +3.1 | Round 8 | 🇮🇱 Israel | 11 | 4♠ | ♦Q | +1 | · |
| +3.1 | Round 11 | 🇺🇸 USA 1 | 20 | 2♦x | ♦7 | = | · |
| +2.5 | Round 5 | 🇫🇷 France | 17 | 4♠ | ♣K | -2 | · |
| +2.5 | Round 15 | 🇭🇰 China Hong Kong | 22 | 1N | ♦3 | +2 | · |
| +2.1 | Round 2 | 🇷🇺 Russia | 15 | 1N | ♠T | +2 | · |
| +2.1 | Round 10 | 🇺🇸 USA 2 | 9 | 3N | ♦9 | -1 | · |
| +1.8 | Round 15 | 🇭🇰 China Hong Kong | 24 | 5♠ | ♣K | = | · |
| +1.6 | Round 11 | 🇺🇸 USA 1 | 13 | 3N | ♠T | +2 | · |
| +1.5 | Round 10 | 🇺🇸 USA 2 | 3 | 4♠ | ♦J | = | · |
| +1.3 | Round 10 | 🇺🇸 USA 2 | 1 | 4♠ | ♣T | -1 | · |
| +1.1 | Round 8 | 🇮🇱 Israel | 15 | 4♠ | ♦4 | +1 | · |
| +0.5 | Round 10 | 🇺🇸 USA 2 | 7 | 3N | ♦4 | +2 | · |
| +0.4 | Round 5 | 🇫🇷 France | 19 | 4♠ | ♠3 | = | · |
| -0.1 | Round 11 | 🇺🇸 USA 1 | 18 | 1N | ♠A | = | · |
| -0.3 | Round 8 | 🇮🇱 Israel | 14 | 2♣ | ♦2 | -1 | · |
| -0.4 | Round 2 | 🇷🇺 Russia | 17 | 3N | ♣4 | +1 | · |
| -0.6 | Round 4 | 🇮🇹 Italy | 4 | 1N | ♥J | -1 | · |
| -0.6 | Round 5 | 🇫🇷 France | 12 | 4♥ | ♠A | +1 | · |
| -0.6 | Round 11 | 🇺🇸 USA 1 | 11 | 6N | ♠Q | +1 | · |
| -0.6 | Round 15 | 🇭🇰 China Hong Kong | 27 | 3♠ | ♣K | -2 | · |
| -0.7 | Round 4 | 🇮🇹 Italy | 10 | 3♦ | ♥K | +1 | · |
| -1.1 | Round 8 | 🇮🇱 Israel | 18 | 4♠ | ♦7 | -1 | · |
| -1.3 | Round 4 | 🇮🇹 Italy | 8 | 2♦ | ♠5 | +2 | · |
| -1.4 | Round 10 | 🇺🇸 USA 2 | 4 | 3♥ | ♣K | = | · |
| -1.5 | Round 2 | 🇷🇺 Russia | 19 | 3N | ♠9 | = | · |
| -1.7 | Round 2 | 🇷🇺 Russia | 18 | 4♠ | ♦K | = | · |
| -1.7 | Round 2 | 🇷🇺 Russia | 20 | 3N | ♠J | +1 | · |
| -1.7 | Round 11 | 🇺🇸 USA 1 | 14 | 1N | ♥6 | -2 | · |
| -1.7 | Round 11 | 🇺🇸 USA 1 | 16 | 2♥ | ♦3 | -1 | · |
| -1.9 | Round 2 | 🇷🇺 Russia | 13 | 3N | ♦J | +2 | · |
| -2.0 | Round 4 | 🇮🇹 Italy | 9 | 3N | ♠5 | = | · |
| -2.1 | Round 8 | 🇮🇱 Israel | 17 | 4♠ | ♠K | +1 | · |
| -2.2 | Round 8 | 🇮🇱 Israel | 19 | 2♥ | ♦A | = | · |
| -2.3 | Round 5 | 🇫🇷 France | 16 | 4♣ | ♦3 | -1 | · |
| -2.7 | Round 8 | 🇮🇱 Israel | 12 | 2N | ♥Q | -1 | · |
| -2.8 | Round 15 | 🇭🇰 China Hong Kong | 26 | 4♣ | ♠A | -1 | · |
| -2.9 | Round 4 | 🇮🇹 Italy | 2 | 5♦ | ♦3 | = | · |
| -3.3 | Round 5 | 🇫🇷 France | 15 | 6♥ | ♠5 | -1 | · |
| -3.7 | Round 4 | 🇮🇹 Italy | 5 | 5♦x | ♠A | -2 | · |
| -3.7 | Round 10 | 🇺🇸 USA 2 | 6 | 4♥ | ♣2 | +1 | · |
| -3.7 | Round 15 | 🇭🇰 China Hong Kong | 30 | 3♦ | ♥J | -2 | · |
| -4.0 | Round 5 | 🇫🇷 France | 13 | 2♦ | ♥K | -2 | · |
| -4.1 | Round 11 | 🇺🇸 USA 1 | 12 | 3♠ | ♥7 | -3 | · |
| -4.9 | Round 8 | 🇮🇱 Israel | 16 | 3N | ♠3 | = | · |
| -5.7 | Round 2 | 🇷🇺 Russia | 16 | 6♠ | ♥A | +1 | · |
| -5.9 | Round 15 | 🇭🇰 China Hong Kong | 29 | 1N | ♦3 | -1 | · |
| -6.3 | Round 2 | 🇷🇺 Russia | 11 | 4♠ | ♦J | -1 | · |
| -6.8 | Round 5 | 🇫🇷 France | 20 | 3N | ♥3 | = | · |
| -7.0 | Round 2 | 🇷🇺 Russia | 14 | 4♠x | ♥A | = | · |
| -8.4 | Round 15 | 🇭🇰 China Hong Kong | 21 | 3♥ | ♦3 | -2 | · |
| -9.3 | Round 15 | 🇭🇰 China Hong Kong | 25 | 3N | ♠4 | -2 | · |
| -10.3 | Round 11 | 🇺🇸 USA 1 | 15 | 6♥ | ♦T | -2 | · |
| -10.4 | Round 11 | 🇺🇸 USA 1 | 17 | 6♥ | ♠5 | -1 | · |
| -11.3 | Round 5 | 🇫🇷 France | 18 | 3N | ♠6 | +1 | · |
| -11.7 | Round 8 | 🇮🇱 Israel | 13 | 3N | ♠9 | = | · |
| -11.7 | Round 11 | 🇺🇸 USA 1 | 19 | 6♣x | ♠K | -2 | · |