ZHANG Boxin · CHINA RDFZ3
vs par split: bidding -0.54 · play -0.46
Strength of schedule: opponents averaged -0.14/bd (an easy draw) → opponent-adjusted +0.71/bd
Card play — on target: opening leads 66.7% #54 of 60 · declarer play 76.2% #23 of 60 · defence 80.0% #34 of 61
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 80.0% (5) | 57.1% (7) |
| Declarer play | 75.0% (8) | 76.9% (13) |
| Defence | 75.0% (8) | 83.3% (12) |
Opening leads by suit led: ♠ 100.0% (1) · ♥ 33.3% (3) · ♦ 75.0% (4) · ♣ 75.0% (4)
vs par by strain: NT +0.25 (20) · a suit -1.83 (30)
vs par by level: part-score -1.13 (23) · game -1.00 (24) · slam +0.00 (3)
By role: declaring +1.79/bd (-2.60 vs par · 30) · defending -0.55/bd (+1.40 vs par · 20)
By vulnerability: vulnerable +0.93/bd (-0.42 vs par · 26) · not vulnerable +0.78/bd (-1.62 vs par · 24)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | Y.Niu | P.Hulanicki – T.Kielbasa | Closed | 10 | -3.4 | -0.34 | -2.60 |
| Round 4 | Y.Niu | C.Hosking – A.Robertson | Closed | 10 | +4.9 | +0.49 | -2.90 |
| Round 5 | Y.Niu | Y.Xie – Y.Hu | Closed | 10 | +42.2 | +4.22 | +1.60 |
| Round 6 | Y.Niu | M.Wu – Y.Lee | Closed | 10 | -3.4 | -0.34 | -0.50 |
| Round 8 | Y.Niu | Y.Liu – T.Zhang | Closed | 10 | +2.4 | +0.24 | -0.60 |
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 |
|---|---|---|---|---|---|---|---|
| +12.5 | Round 5 | SX XHLD | 17 | 6♠ | ♦7 | = | +11 |
| +7.5 | Round 5 | SX XHLD | 12 | 3NT | ♦5 | +4 | +14 |
| +7.1 | Round 5 | SX XHLD | 18 | 3♥x | ♣4 | -1 | +6 |
| +7.0 | Round 6 | CHINESE TAIPEI BLUE | 30 | 4♠ | ♦8 | = | +0 |
| +5.7 | Round 5 | SX XHLD | 15 | 3NT | ♦10 | +1 | -1 |
| +5.6 | Round 1 | AZSUW AKADEMIABRYDZA | 8 | 3NT | ♦2 | -5 | +4 |
| +5.0 | Round 5 | SX XHLD | 20 | 4NT | ♠9 | = | +0 |
| +4.5 | Round 5 | SX XHLD | 11 | 3NT | ♣K | = | -1 |
| +4.4 | Round 4 | AUSSIE KIDS | 10 | 4♠ | ♥Q | +2 | +1 |
| +4.3 | Round 4 | AUSSIE KIDS | 9 | 3NT | ♥7 | +2 | -10 |
| +4.3 | Round 6 | CHINESE TAIPEI BLUE | 28 | 2NT | ♦7 | -2 | +5 |
| +4.3 | Round 8 | SX XNWY | 15 | 1NT | ♦K | +3 | +2 |
| +4.3 | Round 8 | SX XNWY | 18 | 4♥ | ♦10 | = | +3 |
| +3.9 | Round 4 | AUSSIE KIDS | 7 | 2NT | ♠A | +2 | +1 |
| +3.4 | Round 6 | CHINESE TAIPEI BLUE | 23 | 2NT | ♠2 | = | +0 |
| +3.1 | Round 1 | AZSUW AKADEMIABRYDZA | 7 | 2♠ | ♥4 | = | +0 |
| +3.1 | Round 6 | CHINESE TAIPEI BLUE | 21 | 6♥ | ♥10 | +1 | -11 |
| +2.9 | Round 1 | AZSUW AKADEMIABRYDZA | 3 | 3NT | ♠7 | = | -1 |
| +2.5 | Round 6 | CHINESE TAIPEI BLUE | 25 | 3NT | ♥J | +1 | -11 |
| +2.3 | Round 8 | SX XNWY | 20 | 4♠ | ♣A | +1 | +0 |
| +2.0 | Round 4 | AUSSIE KIDS | 3 | 3♦ | ♦8 | -1 | +0 |
| +1.8 | Round 1 | AZSUW AKADEMIABRYDZA | 10 | 3♣ | ♠J | = | +0 |
| +1.6 | Round 1 | AZSUW AKADEMIABRYDZA | 1 | 3NT | ♠2 | -2 | +0 |
| +1.3 | Round 1 | AZSUW AKADEMIABRYDZA | 2 | 3♠ | ♣5 | -1 | -5 |
| +1.3 | Round 5 | SX XHLD | 13 | 3♦ | ♣A | +1 | +0 |
| +1.1 | Round 4 | AUSSIE KIDS | 1 | 3♣ | ♥K | -1 | -4 |
| +0.8 | Round 5 | SX XHLD | 19 | 5♣x | ♠J | -3 | +4 |
| +0.6 | Round 1 | AZSUW AKADEMIABRYDZA | 4 | 2NT | ♠8 | -1 | -6 |
| +0.6 | Round 8 | SX XNWY | 14 | 3♦ | ♠8 | = | +0 |
| +0.5 | Round 5 | SX XHLD | 14 | 4♠ | ♥10 | +2 | -11 |
| -0.2 | Round 4 | AUSSIE KIDS | 6 | 1NT | ♦6 | = | +2 |
| -0.2 | Round 8 | SX XNWY | 12 | 4♥ | ♣K | = | +0 |
| -0.4 | Round 4 | AUSSIE KIDS | 5 | 4♠ | ♣A | = | +1 |
| -0.5 | Round 8 | SX XNWY | 16 | 2♠ | ♦Q | +1 | +0 |
| -0.6 | Round 8 | SX XNWY | 17 | 3♥ | ♣A | -1 | -3 |
| -1.0 | Round 8 | SX XNWY | 11 | 1NT | ♥10 | -1 | -2 |
| -1.2 | Round 6 | CHINESE TAIPEI BLUE | 27 | 1NT | ♥J | -1 | +2 |
| -1.7 | Round 6 | CHINESE TAIPEI BLUE | 24 | 3NT | ♥9 | +3 | +11 |
| -1.8 | Round 8 | SX XNWY | 19 | 4♠ | ♣9 | +2 | -1 |
| -2.5 | Round 1 | AZSUW AKADEMIABRYDZA | 9 | 2NT | ♣2 | = | +1 |
| -2.7 | Round 5 | SX XHLD | 16 | 4♠ | ♥10 | -2 | -6 |
| -2.8 | Round 4 | AUSSIE KIDS | 8 | 3♠ | ♥4 | +4 | -4 |
| -3.0 | Round 4 | AUSSIE KIDS | 4 | 3♠ | ♥A | +2 | -10 |
| -3.7 | Round 6 | CHINESE TAIPEI BLUE | 22 | 4♠ | ♦2 | +2 | -1 |
| -4.4 | Round 4 | AUSSIE KIDS | 2 | 3♠ | ♣A | -1 | -6 |
| -4.4 | Round 6 | CHINESE TAIPEI BLUE | 26 | 4♠ | ♦4 | = | +0 |
| -5.0 | Round 8 | SX XNWY | 13 | 2NT | ♦8 | -3 | -5 |
| -8.3 | Round 1 | AZSUW AKADEMIABRYDZA | 6 | 4♥x | ♣J | = | -5 |
| -9.5 | Round 1 | AZSUW AKADEMIABRYDZA | 5 | 4♠x | ♦2 | -4 | -14 |
| -12.7 | Round 6 | CHINESE TAIPEI BLUE | 29 | 6♣ | ♥6 | = | +0 |