🇨🇦 DONG Hao Zhen (John) · CANADA
vs par split: bidding +0.52 · play +1.55
Strength of schedule: opponents averaged -0.23/bd (an easy draw) → opponent-adjusted +0.97/bd
Card play — on target: opening leads 100.0% #1 of 33 · declarer play 90.0% #5 of 33 · defence 91.3% #7 of 33
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 100.0% (2) | 100.0% (6) |
| Declarer play | 0.0% (1) | 100.0% (9) |
| Defence | 85.7% (7) | 93.8% (16) |
Opening leads by suit led: ♥ 100.0% (1) · ♦ 100.0% (4) · ♣ 100.0% (3)
vs par by strain: NT +2.54 (11) · a suit +1.90 (31)
vs par by level: part-score +2.15 (20) · game +2.71 (21) · slam -13.00 (1)
By role: declaring +0.73/bd (-0.16 vs par · 19) · defending +1.58/bd (+3.91 vs par · 23)
By vulnerability: vulnerable +1.10/bd (+0.91 vs par · 21) · not vulnerable +1.29/bd (+3.24 vs par · 21)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 2 | B.Zhu | A.Carletti – M.Meregalli | Closed | 14 | +9.4 | +0.67 | +3.36 |
| Round 3 | B.Zhu | A.Prochazka – P.Volhejn | Open | 14 | +24.0 | +1.71 | -1.50 |
| Round 4 | B.Zhu | D.Fikriaza – M.Alhanif | Closed | 14 | +16.8 | +1.20 | +4.36 |
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 |
|---|---|---|---|---|---|---|---|
| +13.0 | Round 3 | 🇨🇿 CZECH REPUBLIC | 10 | 6♠ | ♦K | +1 | -13 |
| +11.0 | Round 4 | 🇮🇩 INDONESIA | 22 | 3NT | ♣Q | -2 | +13 |
| +10.6 | Round 4 | 🇮🇩 INDONESIA | 16 | 3NT | ♠Q | -1 | +12 |
| +8.0 | Round 2 | 🇮🇹 ITALY | 12 | 5♥x | ♦A | = | +6 |
| +7.8 | Round 4 | 🇮🇩 INDONESIA | 19 | 4♠ | ♦8 | -3 | +14 |
| +6.4 | Round 2 | 🇮🇹 ITALY | 5 | 3♥ | ♣10 | -1 | +5 |
| +5.6 | Round 4 | 🇮🇩 INDONESIA | 18 | 5♦ | ♦7 | -2 | +6 |
| +5.4 | Round 4 | 🇮🇩 INDONESIA | 23 | 4♠ | ♣7 | -3 | +9 |
| +5.2 | Round 3 | 🇨🇿 CZECH REPUBLIC | 11 | 1NT | ♦3 | -1 | +4 |
| +4.8 | Round 2 | 🇮🇹 ITALY | 13 | 4♥ | ♣4 | = | +3 |
| +4.6 | Round 2 | 🇮🇹 ITALY | 3 | 3♥ | ♣K | = | +12 |
| +4.2 | Round 3 | 🇨🇿 CZECH REPUBLIC | 9 | 3NT | ♣5 | +1 | +1 |
| +3.2 | Round 3 | 🇨🇿 CZECH REPUBLIC | 5 | 3♥ | ♦K | -1 | -2 |
| +2.8 | Round 3 | 🇨🇿 CZECH REPUBLIC | 14 | 3♣ | ♥K | = | +5 |
| +2.6 | Round 2 | 🇮🇹 ITALY | 14 | 3♠ | ♣K | -1 | +4 |
| +2.6 | Round 3 | 🇨🇿 CZECH REPUBLIC | 2 | 2NT | ♥9 | -5 | -9 |
| +2.0 | Round 3 | 🇨🇿 CZECH REPUBLIC | 4 | 3♣ | ♦A | -1 | +11 |
| +2.0 | Round 4 | 🇮🇩 INDONESIA | 27 | 3♠ | ♣J | +1 | +6 |
| +1.8 | Round 3 | 🇨🇿 CZECH REPUBLIC | 8 | 1♦ | ♣3 | -2 | +0 |
| +1.6 | Round 4 | 🇮🇩 INDONESIA | 17 | 2NT | ♣10 | -1 | +4 |
| +1.2 | Round 2 | 🇮🇹 ITALY | 1 | 5♣x | ♣6 | -3 | +2 |
| +0.2 | Round 3 | 🇨🇿 CZECH REPUBLIC | 6 | 3♠ | ♦2 | -1 | +2 |
| -0.2 | Round 2 | 🇮🇹 ITALY | 2 | 3NT | ♥Q | +2 | +0 |
| -0.2 | Round 3 | 🇨🇿 CZECH REPUBLIC | 7 | 4♥ | ♠3 | -4 | -7 |
| -0.2 | Round 4 | 🇮🇩 INDONESIA | 28 | 3NT | ♣4 | +1 | -1 |
| -0.4 | Round 2 | 🇮🇹 ITALY | 4 | 3NT | ♦J | +1 | -1 |
| -0.4 | Round 2 | 🇮🇹 ITALY | 10 | 3♦ | ♠A | +1 | +0 |
| -0.6 | Round 3 | 🇨🇿 CZECH REPUBLIC | 13 | 4♦ | ♠A | = | +1 |
| -0.8 | Round 2 | 🇮🇹 ITALY | 7 | 3♦ | ♥10 | +1 | +0 |
| -1.2 | Round 2 | 🇮🇹 ITALY | 11 | 3♥ | ♦10 | +1 | +7 |
| -1.4 | Round 4 | 🇮🇩 INDONESIA | 20 | 4♠ | ♥2 | -1 | -6 |
| -1.4 | Round 4 | 🇮🇩 INDONESIA | 24 | 2♠ | ♣8 | -2 | -13 |
| -1.8 | Round 2 | 🇮🇹 ITALY | 6 | 2NT | ♥9 | +2 | +10 |
| -1.8 | Round 2 | 🇮🇹 ITALY | 8 | 3♥ | ♦K | -1 | +2 |
| -2.0 | Round 4 | 🇮🇩 INDONESIA | 21 | 4♥ | ♦9 | +1 | +11 |
| -3.4 | Round 3 | 🇨🇿 CZECH REPUBLIC | 1 | 5♦ | ♦9 | = | -3 |
| -3.4 | Round 3 | 🇨🇿 CZECH REPUBLIC | 3 | 3♠ | ♦A | -2 | -6 |
| -3.4 | Round 3 | 🇨🇿 CZECH REPUBLIC | 12 | 4♥ | ♣K | -1 | -5 |
| -4.0 | Round 4 | 🇮🇩 INDONESIA | 25 | 3NT | ♦A | -2 | -5 |
| -8.2 | Round 4 | 🇮🇩 INDONESIA | 26 | 4♠ | ♥K | +2 | +13 |
| -10.0 | Round 4 | 🇮🇩 INDONESIA | 15 | 4♠x | ♣J | -1 | -2 |
| -11.6 | Round 2 | 🇮🇹 ITALY | 9 | 4♠ | ♣7 | = | -3 |