CHANG Yino · CT U16
vs par split: bidding +0.77 · play -0.39
Strength of schedule: opponents averaged +0.36/bd (a tough draw) → opponent-adjusted +1.15/bd
Card play — on target: opening leads 66.7% #122 of 144 · declarer play 40.0% #136 of 144 · defence 75.0% #100 of 144
Bidding activity — not a pass: 51.4% #9 of 144 (75/146)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 100.0% (2) | 60.0% (10) |
| Declarer play | 33.3% (3) | 42.9% (7) |
| Defence | 85.7% (7) | 71.4% (21) |
Opening leads by suit led: ♠ 75.0% (4) · ♥ 75.0% (4) · ♦ 33.3% (3) · ♣ 100.0% (1)
vs par by strain: NT +1.39 (13) · a suit +0.07 (43)
vs par by level: part-score +0.39 (26) · game -0.17 (29) · slam +16.00 (1)
By role: declaring +1.49/bd (-0.96 vs par · 28) · defending +0.10/bd (+1.71 vs par · 28)
By vulnerability: vulnerable +1.91/bd (+3.07 vs par · 28) · not vulnerable -0.33/bd (-2.32 vs par · 28)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | H.Chiu | B.Legras – R.Farissier | Open | 8 | -7.0 | -0.88 | -0.50 |
| Round 2 | H.Chiu | K.Lee – J.Lee | Closed | 8 | +16.2 | +2.02 | +3.88 |
| Round 3 | H.Chiu | L.Wu – K.Chang | Closed | 8 | +1.7 | +0.21 | +0.12 |
| Round 5 | H.Chiu | J.Adamczak – M.Holowacz | Open | 8 | +5.0 | +0.62 | -0.12 |
| Round 7 | H.Chiu | A.Chen – J.Xiao | Closed | 8 | -4.8 | -0.60 | -1.12 |
| Round 8 | H.Chiu | H.Wang – X.Lyu | Closed | 8 | +17.6 | +2.20 | +2.12 |
| Round 10 | H.Chiu | G.Szabo – Z.Zabradi | Open | 8 | +15.7 | +1.96 | -1.75 |
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 |
|---|---|---|---|---|---|---|---|
| +10.9 | Round 8 | RDFZ | 4 | 6NT | ♠3 | -1 | +16 |
| +8.9 | Round 3 | CT 360 | 13 | 4♠ | ♦2 | -1 | +6 |
| +8.8 | Round 1 | FRANCE | 26 | 4♠ | ♥2 | = | +0 |
| +6.6 | Round 1 | FRANCE | 28 | 4♠ | ♥5 | = | +3 |
| +5.6 | Round 2 | WEPLAYBRIDGE4US | 7 | 2NT | ♠J | -2 | +7 |
| +5.5 | Round 8 | RDFZ | 5 | 2♦ | ♥2 | +2 | +14 |
| +5.2 | Round 10 | CZE HUN | 27 | 5♣x | ♥A | -3 | +1 |
| +5.1 | Round 5 | AZS UW WARSAW 1 | 1 | 3NT | ♦Q | = | -2 |
| +4.2 | Round 10 | CZE HUN | 21 | 3NT | ♥K | = | +0 |
| +3.8 | Round 1 | FRANCE | 24 | 4♥ | ♠T | +1 | +1 |
| +3.6 | Round 10 | CZE HUN | 25 | 3♣ | ♥Q | +1 | -8 |
| +3.4 | Round 2 | WEPLAYBRIDGE4US | 4 | 4♦ | ♥A | +3 | +15 |
| +3.4 | Round 5 | AZS UW WARSAW 1 | 7 | 1NT | ♥3 | = | +6 |
| +3.4 | Round 10 | CZE HUN | 24 | 3NT | ♥7 | -1 | +5 |
| +3.3 | Round 2 | WEPLAYBRIDGE4US | 2 | 3NTx | ♥6 | -1 | +0 |
| +3.1 | Round 8 | RDFZ | 2 | 4♠ | ♥6 | = | +0 |
| +2.6 | Round 3 | CT 360 | 15 | 4♠ | ♦9 | +2 | +1 |
| +2.5 | Round 2 | WEPLAYBRIDGE4US | 8 | 5♦ | ♣J | +2 | +1 |
| +2.5 | Round 8 | RDFZ | 7 | 2♥ | ♠4 | +2 | +10 |
| +2.1 | Round 2 | WEPLAYBRIDGE4US | 5 | 3♠ | ♣A | = | +0 |
| +2.1 | Round 7 | JACK | 23 | 4♠x | ♣3 | -1 | +8 |
| +2.0 | Round 2 | WEPLAYBRIDGE4US | 6 | 4♠ | ♦K | -1 | -1 |
| +1.7 | Round 5 | AZS UW WARSAW 1 | 5 | 4♠ | ♥3 | +1 | +0 |
| +1.6 | Round 10 | CZE HUN | 23 | 4♥x | ♠2 | -1 | +2 |
| +1.5 | Round 7 | JACK | 21 | 3♦ | ♥6 | = | +0 |
| +1.4 | Round 2 | WEPLAYBRIDGE4US | 3 | 2♠ | ♣Q | = | +11 |
| +1.2 | Round 10 | CZE HUN | 26 | 2♥ | ♣9 | = | -1 |
| +1.0 | Round 8 | RDFZ | 1 | 2♥ | ♦6 | +1 | +0 |
| +0.9 | Round 8 | RDFZ | 8 | 3♦ | ♥5 | +1 | -7 |
| +0.8 | Round 5 | AZS UW WARSAW 1 | 4 | 2NT | ♣T | +1 | -1 |
| +0.8 | Round 7 | JACK | 26 | 2♠ | ♥K | +1 | +0 |
| +0.4 | Round 3 | CT 360 | 14 | 4♠ | ♦A | = | -9 |
| +0.3 | Round 5 | AZS UW WARSAW 1 | 2 | 2♠ | ♥7 | -1 | +7 |
| +0.2 | Round 3 | CT 360 | 17 | 4♠x | ♦Q | -1 | -5 |
| +0.2 | Round 7 | JACK | 25 | 1NT | ♠T | +1 | +0 |
| -0.0 | Round 1 | FRANCE | 27 | 1♥ | ♠A | -1 | +2 |
| -0.0 | Round 5 | AZS UW WARSAW 1 | 8 | 2♠ | ♥3 | -1 | -1 |
| -0.8 | Round 7 | JACK | 27 | 1NT | ♠T | -4 | -6 |
| -1.0 | Round 10 | CZE HUN | 22 | 3♦ | ♦8 | +1 | -7 |
| -1.1 | Round 7 | JACK | 28 | 3♠ | ♣T | +1 | -1 |
| -1.3 | Round 1 | FRANCE | 22 | 3NT | ♣Q | -1 | +2 |
| -1.3 | Round 3 | CT 360 | 18 | 4♠ | ♥J | +1 | +11 |
| -1.3 | Round 8 | RDFZ | 3 | 4♥ | ♣K | -1 | -5 |
| -1.8 | Round 7 | JACK | 22 | 3♦ | ♥A | = | -6 |
| -2.1 | Round 3 | CT 360 | 16 | 4♠ | ♣3 | = | +0 |
| -2.2 | Round 3 | CT 360 | 11 | 2♦ | ♥4 | = | -5 |
| -2.5 | Round 10 | CZE HUN | 28 | 3♣ | ♦9 | +1 | -6 |
| -2.8 | Round 1 | FRANCE | 21 | 4♠ | ♥4 | = | +0 |
| -2.9 | Round 5 | AZS UW WARSAW 1 | 3 | 3♦ | ♠A | = | +0 |
| -3.4 | Round 5 | AZS UW WARSAW 1 | 6 | 3NT | ♥5 | -1 | -10 |
| -4.1 | Round 2 | WEPLAYBRIDGE4US | 1 | 4♥ | ♣7 | +2 | -2 |
| -4.8 | Round 3 | CT 360 | 12 | 5♣ | ♠J | = | +2 |
| -5.0 | Round 8 | RDFZ | 6 | 4♥ | ♠T | -2 | -11 |
| -5.7 | Round 7 | JACK | 24 | 4♠ | ♣A | -1 | -4 |
| -7.3 | Round 1 | FRANCE | 25 | 3NT | ♥9 | = | +1 |
| -14.8 | Round 1 | FRANCE | 23 | 3♠x | ♠A | +1 | -13 |