🇨🇦 DONG Hao Zhen (John) · CANADA
19rank
+12.0Butler · 132 bds
+0.09per board
±5.0swing
+0.45vs par /bd · #10/42
-0.19adjusted /bd
by round
vs par split: bidding +0.03 · play +0.40
Strength of schedule: opponents averaged -0.28/bd (an easy draw) → opponent-adjusted -0.19/bd
Card play — on target: opening leads 75.0% #21 of 42 · declarer play 72.7% #27 of 42 · defence 82.8% #19 of 42
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 50.0% (6) | 81.8% (22) |
| Declarer play | 61.5% (13) | 80.0% (20) |
| Defence | 84.2% (19) | 82.2% (45) |
Opening leads by suit led: ♠ 66.7% (6) · ♥ 66.7% (6) · ♦ 77.8% (9) · ♣ 85.7% (7)
vs par by strain: NT +0.00 (44) · a suit +0.66 (87)
vs par by level: part-score +1.40 (40) · game +0.12 (81) · slam -0.90 (10)
By role: declaring -0.28/bd (-2.06 vs par · 68) · defending +0.49/bd (+3.12 vs par · 64)
By vulnerability: vulnerable +0.11/bd (-0.36 vs par · 66) · not vulnerable +0.08/bd (+1.27 vs par · 66)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Quarterfinal | M.Zhao | A.Nilsson – M.Bjoerk Heed | Open | 12 | -4.0 | -0.33 | -0.17 |
| Quarterfinal | M.Zhao | T.Lundqvist – I.Lundqvist | Open | 12 | +5.2 | +0.43 | +0.17 |
| Quarterfinal | M.Zhao | M.Bjoerk Heed – A.Nilsson | Closed | 12 | +5.4 | +0.45 | -0.83 |
| Semifinal | M.Zhao | K.Brekke – T.Toesse | Closed | 12 | -26.4 | -2.20 | +0.08 |
| Semifinal | M.Zhao | A.Brogeland – M.Austad | Closed | 12 | -15.0 | -1.25 | -0.17 |
| Semifinal | M.Zhao | K.Brekke – T.Toesse | Closed | 12 | +7.5 | +0.62 | -0.42 |
| Semifinal | M.Zhao | C.Johnsen – M.Saetre | Open | 12 | +31.2 | +2.60 | +1.92 |
| Final | M.Zhao | N.Berger – S.Zur | Open | 12 | -10.8 | -0.90 | +1.08 |
| Final | M.Zhao | L.Batzia Greenberg – Y.Fixel | Closed | 12 | -8.8 | -0.73 | +0.42 |
| Final | M.Zhao | O.Sabbah – D.Msika | Closed | 12 | +30.5 | +2.54 | +1.75 |
| Final | M.Zhao | Y.Fixel – L.Batzia Greenberg | Closed | 12 | -2.8 | -0.23 | +1.17 |
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 |
|---|---|---|---|---|---|---|---|
| +12.7 | Quarterfinal | 🇸🇪 SWEDEN | 14 | 6♥ | ♣3 | -1 | +14 |
| +12.1 | Semifinal | 🇳🇴 NORWAY | 48 | 5♥ | ♣A | -1 | +9 |
| +11.9 | Quarterfinal | 🇸🇪 SWEDEN | 17 | 3NT | ♥Q | = | +3 |
| +10.9 | Semifinal | 🇳🇴 NORWAY | 38 | 5♠ | ♦6 | -2 | +14 |
| +10.7 | Quarterfinal | 🇸🇪 SWEDEN | 30 | 3NT | ♠5 | = | +10 |
| +10.7 | Semifinal | 🇳🇴 NORWAY | 39 | 6♦ | ♦A | = | +12 |
| +10.0 | Final | 🇮🇱 ISRAEL | 43 | 5♦x | ♥2 | -1 | +2 |
| +8.7 | Quarterfinal | 🇸🇪 SWEDEN | 10 | 6NT | ♥Q | = | -13 |
| +8.0 | Final | 🇮🇱 ISRAEL | 30 | 6♥ | ♦2 | -1 | +13 |
| +7.9 | Semifinal | 🇳🇴 NORWAY | 28 | 1NT | ♦7 | -2 | -9 |
| +6.3 | Semifinal | 🇳🇴 NORWAY | 17 | 2♦x | ♠K | -2 | +5 |
| +6.1 | Semifinal | 🇳🇴 NORWAY | 33 | 4♥ | ♦K | +2 | +17 |
| +6.0 | Semifinal | 🇳🇴 NORWAY | 36 | 3♣ | ♦K | = | +6 |
| +6.0 | Final | 🇮🇱 ISRAEL | 41 | 4♠ | ♥10 | -2 | +11 |
| +5.9 | Final | 🇮🇱 ISRAEL | 25 | 3NT | ♥3 | = | +7 |
| +5.7 | Quarterfinal | 🇸🇪 SWEDEN | 2 | 4♥ | ♣5 | +1 | +4 |
| +5.7 | Semifinal | 🇳🇴 NORWAY | 46 | 2♠ | ♣10 | +3 | +10 |
| +5.4 | Semifinal | 🇳🇴 NORWAY | 3 | 3NT | ♦3 | +1 | +8 |
| +5.1 | Final | 🇮🇱 ISRAEL | 9 | 4♠x | ♥A | = | +10 |
| +4.9 | Final | 🇮🇱 ISRAEL | 34 | 4♠ | ♣6 | +2 | +2 |
| +4.7 | Final | 🇮🇱 ISRAEL | 24 | 3NT | ♥4 | -5 | +3 |
| +4.6 | Final | 🇮🇱 ISRAEL | 18 | 1NT | ♠8 | = | -1 |
| +4.4 | Semifinal | 🇳🇴 NORWAY | 1 | 5♣x | ♠A | -3 | -10 |
| +4.4 | Final | 🇮🇱 ISRAEL | 27 | 3NT | ♠2 | -1 | +6 |
| +4.3 | Final | 🇮🇱 ISRAEL | 32 | 5♦ | ♥A | = | +3 |
| +4.1 | Quarterfinal | 🇸🇪 SWEDEN | 5 | 6NT | ♥3 | +1 | +1 |
| +4.0 | Semifinal | 🇳🇴 NORWAY | 19 | 2♠ | ♦K | = | -1 |
| +3.7 | Semifinal | 🇳🇴 NORWAY | 43 | 3♠ | ♦A | -1 | -1 |
| +3.3 | Quarterfinal | 🇸🇪 SWEDEN | 35 | 4♥ | ♠A | = | +0 |
| +3.3 | Semifinal | 🇳🇴 NORWAY | 13 | 2♥ | ♠2 | +1 | +6 |
| +3.3 | Final | 🇮🇱 ISRAEL | 39 | 3♠ | ♣K | +1 | +10 |
| +3.1 | Quarterfinal | 🇸🇪 SWEDEN | 18 | 3NT | ♥8 | -3 | +9 |
| +3.0 | Semifinal | 🇳🇴 NORWAY | 6 | 4♥ | ♠4 | -1 | +6 |
| +2.6 | Quarterfinal | 🇸🇪 SWEDEN | 25 | 3♦ | ♦9 | -1 | +4 |
| +2.6 | Semifinal | 🇳🇴 NORWAY | 25 | 1NT | ♠3 | = | +6 |
| +2.6 | Semifinal | 🇳🇴 NORWAY | 44 | 4♠ | ♥6 | -1 | +4 |
| +2.6 | Final | 🇮🇱 ISRAEL | 35 | 3♦ | ♣Q | -1 | +9 |
| +2.3 | Quarterfinal | 🇸🇪 SWEDEN | 8 | 2♠ | ♦Q | +2 | +6 |
| +2.3 | Final | 🇮🇱 ISRAEL | 42 | 4♥ | ♠K | +1 | -11 |
| +1.9 | Semifinal | 🇳🇴 NORWAY | 20 | 3NT | ♥2 | +3 | +11 |
| +1.7 | Semifinal | 🇳🇴 NORWAY | 27 | 4♠ | ♦J | +1 | +0 |
| +1.7 | Semifinal | 🇳🇴 NORWAY | 40 | 4♥ | ♦3 | -1 | +6 |
| +1.7 | Final | 🇮🇱 ISRAEL | 48 | 2♦ | ♣5 | +1 | +0 |
| +1.6 | Final | 🇮🇱 ISRAEL | 36 | 3NT | ♦5 | -2 | +11 |
| +1.4 | Quarterfinal | 🇸🇪 SWEDEN | 15 | 6NT | ♦3 | = | -11 |
| +1.3 | Final | 🇮🇱 ISRAEL | 1 | 1NT | ♠2 | +3 | +2 |
| +1.1 | Quarterfinal | 🇸🇪 SWEDEN | 27 | 2♠ | ♣A | -1 | -1 |
| +1.0 | Semifinal | 🇳🇴 NORWAY | 14 | 4♠ | ♣4 | +3 | -12 |
| +0.9 | Quarterfinal | 🇸🇪 SWEDEN | 24 | 2♠ | ♣A | +1 | +6 |
| +0.9 | Final | 🇮🇱 ISRAEL | 17 | 2♠ | ♥9 | -2 | -3 |
| +0.7 | Semifinal | 🇳🇴 NORWAY | 34 | 3NT | ♠4 | +1 | +0 |
| +0.7 | Final | 🇮🇱 ISRAEL | 10 | 3NT | ♠2 | -1 | +0 |
| +0.7 | Final | 🇮🇱 ISRAEL | 19 | 2♥ | ♣J | +1 | +0 |
| +0.7 | Final | 🇮🇱 ISRAEL | 26 | 1NT | ♦8 | +1 | +1 |
| +0.6 | Quarterfinal | 🇸🇪 SWEDEN | 13 | 4♥ | ♠J | +1 | +1 |
| +0.6 | Quarterfinal | 🇸🇪 SWEDEN | 31 | 5♦ | ♣5 | +1 | +13 |
| +0.6 | Semifinal | 🇳🇴 NORWAY | 31 | 4♥ | ♠2 | +1 | +0 |
| +0.6 | Semifinal | 🇳🇴 NORWAY | 35 | 4♠ | ♦10 | = | +0 |
| +0.6 | Final | 🇮🇱 ISRAEL | 3 | 3NT | ♠3 | +1 | +11 |
| +0.4 | Quarterfinal | 🇸🇪 SWEDEN | 6 | Pass | +3 | ||
| +0.4 | Semifinal | 🇳🇴 NORWAY | 18 | 3NT | ♥4 | +2 | +0 |
| +0.3 | Quarterfinal | 🇸🇪 SWEDEN | 21 | 2♠ | ♠Q | = | +0 |
| +0.3 | Quarterfinal | 🇸🇪 SWEDEN | 34 | 3♥ | ♦A | +1 | +1 |
| +0.3 | Semifinal | 🇳🇴 NORWAY | 9 | 3NT | ♥2 | = | -3 |
| +0.3 | Final | 🇮🇱 ISRAEL | 11 | 2♠ | ♥K | +1 | +0 |
| +0.3 | Final | 🇮🇱 ISRAEL | 22 | 2♥ | ♦2 | = | +0 |
| +0.1 | Quarterfinal | 🇸🇪 SWEDEN | 4 | 4♠ | ♥9 | = | +0 |
| +0.0 | Final | 🇮🇱 ISRAEL | 28 | 3NT | ♥5 | +3 | -16 |
| +0.0 | Final | 🇮🇱 ISRAEL | 31 | 4♥ | ♦A | +1 | +0 |
| +0.0 | Final | 🇮🇱 ISRAEL | 47 | 3♣ | ♦2 | +1 | +7 |
| -0.1 | Quarterfinal | 🇸🇪 SWEDEN | 23 | 5♣ | ♠4 | +2 | +10 |
| -0.1 | Final | 🇮🇱 ISRAEL | 7 | 2♥ | ♠10 | -2 | -2 |
| -0.3 | Semifinal | 🇳🇴 NORWAY | 8 | 1NT | ♠Q | -1 | +4 |
| -0.3 | Final | 🇮🇱 ISRAEL | 21 | 3♠ | ♥8 | = | +0 |
| -0.7 | Quarterfinal | 🇸🇪 SWEDEN | 22 | 4♠ | ♦3 | = | +1 |
| -0.7 | Semifinal | 🇳🇴 NORWAY | 24 | 3NT | ♣2 | -2 | +6 |
| -0.9 | Semifinal | 🇳🇴 NORWAY | 41 | 3NT | ♥Q | +1 | -1 |
| -0.9 | Final | 🇮🇱 ISRAEL | 33 | 3♦ | ♥5 | +2 | -7 |
| -1.0 | Quarterfinal | 🇸🇪 SWEDEN | 20 | 5♣ | ♥7 | -2 | -5 |
| -1.0 | Quarterfinal | 🇸🇪 SWEDEN | 28 | 4♥ | ♣8 | = | -9 |
| -1.0 | Semifinal | 🇳🇴 NORWAY | 42 | 3NT | ♥2 | +1 | -12 |
| -1.0 | Semifinal | 🇳🇴 NORWAY | 47 | 3NT | ♥3 | +2 | +1 |
| -1.0 | Final | 🇮🇱 ISRAEL | 29 | 3♣ | ♦7 | +2 | -8 |
| -1.0 | Final | 🇮🇱 ISRAEL | 37 | 4♠ | ♦7 | +1 | -1 |
| -1.0 | Final | 🇮🇱 ISRAEL | 46 | 3NT | ♣9 | = | +0 |
| -1.1 | Quarterfinal | 🇸🇪 SWEDEN | 36 | 4♠ | ♥4 | -1 | -5 |
| -1.1 | Semifinal | 🇳🇴 NORWAY | 30 | 4♠ | ♥9 | +1 | +1 |
| -1.3 | Quarterfinal | 🇸🇪 SWEDEN | 29 | 4♥ | ♣K | = | +0 |
| -1.4 | Final | 🇮🇱 ISRAEL | 6 | 3NT | ♠10 | = | -7 |
| -1.4 | Final | 🇮🇱 ISRAEL | 23 | 3♥ | ♣K | -1 | +3 |
| -1.6 | Semifinal | 🇳🇴 NORWAY | 16 | 3NT | ♦Q | = | -1 |
| -1.6 | Semifinal | 🇳🇴 NORWAY | 32 | 1NT | ♥4 | = | +0 |
| -1.7 | Final | 🇮🇱 ISRAEL | 2 | 3♣ | ♣Q | = | +0 |
| -2.0 | Quarterfinal | 🇸🇪 SWEDEN | 9 | 3♦ | ♥8 | = | +11 |
| -2.0 | Final | 🇮🇱 ISRAEL | 12 | 4♥ | ♣A | = | +0 |
| -2.0 | Final | 🇮🇱 ISRAEL | 15 | 4♠ | ♣K | +1 | +0 |
| -2.3 | Final | 🇮🇱 ISRAEL | 4 | 3NT | ♣3 | +1 | +0 |
| -2.3 | Final | 🇮🇱 ISRAEL | 14 | 5♦ | ♣K | -2 | +0 |
| -2.6 | Semifinal | 🇳🇴 NORWAY | 5 | 3♥ | ♦J | -2 | -3 |
| -2.6 | Semifinal | 🇳🇴 NORWAY | 11 | 4♥ | ♦9 | +1 | +11 |
| -2.6 | Semifinal | 🇳🇴 NORWAY | 23 | 2NT | ♦K | -2 | -5 |
| -2.7 | Quarterfinal | 🇸🇪 SWEDEN | 1 | 4♠ | ♠2 | +2 | -2 |
| -2.7 | Final | 🇮🇱 ISRAEL | 45 | 3♠ | ♥2 | -2 | +1 |
| -3.0 | Semifinal | 🇳🇴 NORWAY | 10 | 3NT | ♥Q | -2 | -2 |
| -3.0 | Final | 🇮🇱 ISRAEL | 16 | 4♠ | ♥3 | -1 | +12 |
| -3.1 | Quarterfinal | 🇸🇪 SWEDEN | 3 | 4♠ | ♦A | +1 | +0 |
| -3.1 | Quarterfinal | 🇸🇪 SWEDEN | 32 | 6♠ | ♠10 | +1 | -11 |
| -3.3 | Quarterfinal | 🇸🇪 SWEDEN | 33 | 3NT | ♦9 | -2 | -7 |
| -3.4 | Quarterfinal | 🇸🇪 SWEDEN | 26 | 4♠ | ♣7 | -1 | -5 |
| -3.4 | Final | 🇮🇱 ISRAEL | 5 | 4♥ | ♦A | +1 | -11 |
| -3.6 | Final | 🇮🇱 ISRAEL | 13 | 4♠ | ♦4 | +2 | -1 |
| -3.9 | Semifinal | 🇳🇴 NORWAY | 2 | 3♣ | ♠A | -1 | +0 |
| -4.1 | Quarterfinal | 🇸🇪 SWEDEN | 12 | 3NT | ♠8 | -1 | -5 |
| -5.0 | Semifinal | 🇳🇴 NORWAY | 45 | 3NT | ♦3 | -2 | -8 |
| -5.1 | Quarterfinal | 🇸🇪 SWEDEN | 11 | 4♥ | ♠5 | = | -7 |
| -5.7 | Final | 🇮🇱 ISRAEL | 38 | 2NT | ♠5 | +1 | -4 |
| -6.6 | Semifinal | 🇳🇴 NORWAY | 29 | 4♥ | ♠6 | -2 | -13 |
| -6.7 | Final | 🇮🇱 ISRAEL | 44 | 4♠ | ♥K | -1 | -4 |
| -7.3 | Semifinal | 🇳🇴 NORWAY | 21 | 3NT | ♦A | -1 | +6 |
| -7.4 | Final | 🇮🇱 ISRAEL | 20 | 4♠ | ♥K | = | -8 |
| -7.9 | Final | 🇮🇱 ISRAEL | 8 | 3NT | ♥4 | +2 | +10 |
| -8.0 | Semifinal | 🇳🇴 NORWAY | 22 | 4♠ | ♣Q | +1 | -2 |
| -8.1 | Semifinal | 🇳🇴 NORWAY | 7 | 3NT | ♥J | +4 | -9 |
| -8.3 | Quarterfinal | 🇸🇪 SWEDEN | 7 | 4♥ | ♥8 | = | +0 |
| -8.3 | Semifinal | 🇳🇴 NORWAY | 37 | 5♦ | ♣8 | -2 | -11 |
| -8.6 | Semifinal | 🇳🇴 NORWAY | 12 | 6NT | ♦5 | = | +11 |
| -9.0 | Final | 🇮🇱 ISRAEL | 40 | 2♠ | ♣8 | +4 | +3 |
| -9.4 | Semifinal | 🇳🇴 NORWAY | 26 | 3NT | ♦7 | -1 | -13 |
| -10.3 | Quarterfinal | 🇸🇪 SWEDEN | 19 | 4♠ | ♦A | = | -13 |
| -10.4 | Semifinal | 🇳🇴 NORWAY | 4 | 6♠ | ♣A | -1 | -12 |
| -11.7 | Semifinal | 🇳🇴 NORWAY | 15 | 5♣ | ♥J | +1 | -15 |
| -13.6 | Quarterfinal | 🇸🇪 SWEDEN | 16 | 7♥ | ♣K | -2 | -13 |