YU Chengzhong · NINGBOYONGGUAN
548rank
-30.6Butler · 100 bds
-0.31per board
±4.6swing
-0.52vs par /bd · #515/672
-0.45adjusted /bd
by round
vs par split: bidding -0.13 · play -0.14
Strength of schedule: opponents averaged -0.14/bd (an easy draw) → opponent-adjusted -0.45/bd
Card play — on target: opening leads 76.5% #468 of 671 · declarer play 66.7% #545 of 671 · defence 85.7% #315 of 672
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | · | 76.5% (17) |
| Declarer play | · | 66.7% (15) |
| Defence | · | 85.7% (35) |
Opening leads by suit led: ♠ 66.7% (3) · ♥ 100.0% (2) · ♦ 100.0% (5) · ♣ 57.1% (7)
vs par by strain: a suit -0.27 (63)
vs par by level: part-score -1.67 (24) · game +0.26 (31) · slam +1.88 (8)
By role: declaring +0.13/bd (-2.30 vs par · 50) · defending -0.74/bd (+1.26 vs par · 50)
By vulnerability: vulnerable -1.02/bd (-1.02 vs par · 54) · not vulnerable +0.53/bd (+0.07 vs par · 46)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 3 | J.Lv | R.Li – S.Dong | Open | 10 | +5.5 | +0.55 | +2.10 |
| Round 4 | J.Lv | M.Ghanem – S.Barakat | Open | 10 | -2.2 | -0.22 | -0.20 |
| Round 6 | Z.Yan | CHEN M. Z. – M.Cao | Closed | 10 | -11.0 | -1.10 | -0.10 |
| Round 7 | L.Ni | Y.Shi – J.Zhang | Open | 10 | -20.8 | -2.08 | -3.50 |
| Round 8 | J.Lv | B.Shi – M.Feng | Open | 10 | +22.9 | +2.29 | +3.30 |
| Round 9 | J.Lv | L.Lin – L.Dong | Open | 10 | +0.9 | +0.09 | +0.30 |
| Round 10 | J.Lv | P.Li – H.Wang | Open | 10 | -6.2 | -0.62 | -1.90 |
| Round 11 | J.Lv | Y.Zhang – Y.Niu | Open | 10 | -2.7 | -0.27 | -0.30 |
| Round 12 | J.Lv | K.Ko – S.Huang | Open | 10 | -1.3 | -0.13 | -0.20 |
| Round 13 | J.Lv | R.Okuno – K.Sasaki | Open | 10 | -15.7 | -1.57 | -4.70 |
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 |
|---|---|---|---|---|---|---|---|
| +15.4 | Round 12 | WELLWISE | 23 | 6♦ | ♦7 | = | +15 |
| +13.5 | Round 3 | SHAN FENG | 26 | 6♣ | ♦A | = | +14 |
| +11.9 | Round 8 | SHANGHAI THINK CLUB | 13 | 6♠ | ♥A | = | +10 |
| +6.8 | Round 11 | SHANGHAI YOUTH 5 | 16 | 6♠ | ♣9 | -1 | +13 |
| +6.5 | Round 12 | WELLWISE | 24 | 3N | ♥J | = | +11 |
| +6.5 | Round 13 | FAIRY TALE | 6 | 3N | ♥6 | +2 | -11 |
| +6.3 | Round 3 | SHAN FENG | 28 | 4♥ | ♣6 | -1 | +11 |
| +5.3 | Round 6 | ZHANG | 21 | 6♥ | ♣A | -1 | +11 |
| +5.3 | Round 8 | SHANGHAI THINK CLUB | 11 | 5♣ | ♠3 | -1 | +8 |
| +5.2 | Round 9 | BLUEMAROON | 21 | 3N | ♣4 | +2 | +6 |
| +5.1 | Round 9 | BLUEMAROON | 29 | 2♠ | ♥K | = | +6 |
| +4.7 | Round 4 | PETRA | 8 | 4♠x | ♦Q | -1 | +6 |
| +4.5 | Round 10 | HEILONGJIANG YAXUAN | 10 | 2♠ | ♣5 | -1 | +6 |
| +3.9 | Round 12 | WELLWISE | 29 | 2N | ♥7 | = | +6 |
| +3.5 | Round 10 | HEILONGJIANG YAXUAN | 2 | 5♦ | ♥A | = | +0 |
| +3.4 | Round 8 | SHANGHAI THINK CLUB | 12 | 3N | ♠K | -2 | +6 |
| +3.3 | Round 13 | FAIRY TALE | 2 | 4♥ | ♣5 | = | -1 |
| +3.1 | Round 9 | BLUEMAROON | 26 | 4♠ | ♠5 | -1 | +6 |
| +2.9 | Round 8 | SHANGHAI THINK CLUB | 16 | 2♥ | ♣A | -2 | +2 |
| +2.9 | Round 11 | SHANGHAI YOUTH 5 | 15 | 4♠ | ♣A | -1 | -2 |
| +2.7 | Round 4 | PETRA | 4 | 2♦ | ♥J | +3 | +10 |
| +2.6 | Round 3 | SHAN FENG | 25 | 1Nx | ♠8 | = | +3 |
| +2.6 | Round 6 | ZHANG | 25 | 3♥ | ♥5 | -1 | +6 |
| +2.6 | Round 8 | SHANGHAI THINK CLUB | 20 | 4♠ | ♣A | = | +0 |
| +2.6 | Round 9 | BLUEMAROON | 27 | 2♠ | ♥7 | +1 | +0 |
| +1.9 | Round 8 | SHANGHAI THINK CLUB | 15 | 1N | ♣6 | +2 | +0 |
| +1.6 | Round 11 | SHANGHAI YOUTH 5 | 18 | 4♣ | ♠6 | -1 | +4 |
| +1.5 | Round 4 | PETRA | 3 | 3N | ♦2 | +1 | -1 |
| +1.5 | Round 6 | ZHANG | 22 | 3♦ | ♥Q | -1 | -4 |
| +1.5 | Round 9 | BLUEMAROON | 30 | 3♠ | ♣K | = | +0 |
| +1.3 | Round 3 | SHAN FENG | 29 | 3N | ♥K | +1 | -1 |
| +1.3 | Round 12 | WELLWISE | 30 | 5♣ | ♦A | -1 | +5 |
| +1.1 | Round 6 | ZHANG | 26 | 4♠ | ♥Q | = | +5 |
| +0.9 | Round 4 | PETRA | 2 | 3N | ♦3 | +2 | +1 |
| +0.8 | Round 4 | PETRA | 10 | Pass | +3 | ||
| +0.8 | Round 13 | FAIRY TALE | 3 | 3N | ♥5 | +2 | +0 |
| +0.7 | Round 8 | SHANGHAI THINK CLUB | 14 | 2N | ♥A | -1 | +2 |
| +0.6 | Round 9 | BLUEMAROON | 28 | 4N | ♠K | = | -5 |
| +0.3 | Round 3 | SHAN FENG | 21 | 1N | ♣9 | +1 | +1 |
| +0.3 | Round 3 | SHAN FENG | 22 | 5♣ | ♦J | = | +5 |
| +0.2 | Round 6 | ZHANG | 27 | 4♥ | ♦K | -1 | +5 |
| +0.2 | Round 10 | HEILONGJIANG YAXUAN | 7 | 1N | ♦7 | = | +9 |
| +0.1 | Round 7 | WONDERS INFO | 1 | 3N | ♣4 | +1 | +1 |
| +0.1 | Round 12 | WELLWISE | 21 | 1N | ♣4 | +1 | -1 |
| -0.0 | Round 7 | WONDERS INFO | 3 | 3♦ | ♥4 | -2 | -9 |
| -0.0 | Round 13 | FAIRY TALE | 9 | 4♠ | ♣3 | +1 | +0 |
| -0.1 | Round 7 | WONDERS INFO | 6 | 4♥ | ♥J | = | -1 |
| -0.1 | Round 11 | SHANGHAI YOUTH 5 | 20 | 3N | ♥J | +3 | -13 |
| -0.2 | Round 7 | WONDERS INFO | 4 | 4♥ | ♠3 | = | -1 |
| -0.2 | Round 9 | BLUEMAROON | 23 | 1N | ♠7 | +1 | +0 |
| -0.3 | Round 10 | HEILONGJIANG YAXUAN | 5 | 4♠ | ♦2 | +2 | -11 |
| -0.3 | Round 13 | FAIRY TALE | 10 | 2♦ | ♠Q | +3 | -1 |
| -0.4 | Round 3 | SHAN FENG | 24 | 2♠ | ♣K | +1 | +0 |
| -0.4 | Round 10 | HEILONGJIANG YAXUAN | 3 | 1N | ♦K | +1 | -1 |
| -0.5 | Round 6 | ZHANG | 29 | 2N | ♥6 | = | +0 |
| -0.6 | Round 8 | SHANGHAI THINK CLUB | 17 | 3N | ♥7 | = | +6 |
| -0.8 | Round 10 | HEILONGJIANG YAXUAN | 9 | 4♠x | ♥7 | -2 | +0 |
| -0.8 | Round 12 | WELLWISE | 25 | 3N | ♥5 | +2 | -6 |
| -0.9 | Round 9 | BLUEMAROON | 24 | 4♥ | ♦6 | = | +5 |
| -1.0 | Round 4 | PETRA | 5 | 2♥ | ♦5 | -1 | +1 |
| -1.0 | Round 6 | ZHANG | 28 | 3N | ♥4 | +3 | -1 |
| -1.0 | Round 10 | HEILONGJIANG YAXUAN | 4 | 1N | ♣7 | -1 | -5 |
| -1.2 | Round 11 | SHANGHAI YOUTH 5 | 19 | 4♠ | ♣J | +1 | -1 |
| -1.3 | Round 11 | SHANGHAI YOUTH 5 | 17 | 2♠ | ♣Q | -1 | -4 |
| -1.3 | Round 13 | FAIRY TALE | 7 | 4♥ | ♦A | +1 | +0 |
| -1.4 | Round 10 | HEILONGJIANG YAXUAN | 6 | 4♠ | ♣A | +1 | -1 |
| -1.5 | Round 11 | SHANGHAI YOUTH 5 | 12 | 1N | ♥7 | +2 | -10 |
| -1.8 | Round 7 | WONDERS INFO | 8 | 5♣x | ♥Q | -1 | -9 |
| -1.8 | Round 7 | WONDERS INFO | 9 | 4♥ | ♠8 | +3 | +10 |
| -2.1 | Round 6 | ZHANG | 30 | 3N | ♥2 | -2 | -6 |
| -2.2 | Round 4 | PETRA | 1 | 4♣ | ♠10 | -2 | -5 |
| -2.2 | Round 4 | PETRA | 6 | 4♣ | ♠Q | -2 | -11 |
| -2.5 | Round 4 | PETRA | 9 | 3N | ♠4 | -1 | +0 |
| -2.5 | Round 8 | SHANGHAI THINK CLUB | 18 | 2♠ | ♠J | +1 | -1 |
| -2.6 | Round 7 | WONDERS INFO | 2 | 2N | ♠10 | -1 | -5 |
| -2.6 | Round 11 | SHANGHAI YOUTH 5 | 11 | 3N | ♥2 | = | +1 |
| -2.7 | Round 8 | SHANGHAI THINK CLUB | 19 | 2♣ | ♦3 | -2 | +0 |
| -3.0 | Round 13 | FAIRY TALE | 1 | 4♠ | ♦J | +2 | -2 |
| -3.5 | Round 11 | SHANGHAI YOUTH 5 | 14 | 3N | ♠4 | +2 | +14 |
| -3.6 | Round 12 | WELLWISE | 22 | 4♠ | ♥A | -1 | -5 |
| -3.6 | Round 13 | FAIRY TALE | 4 | 4♠ | ♣8 | = | +1 |
| -3.8 | Round 11 | SHANGHAI YOUTH 5 | 13 | 2♥ | ♦6 | -1 | -5 |
| -3.9 | Round 3 | SHAN FENG | 30 | 4♠ | ♥A | = | +5 |
| -4.1 | Round 12 | WELLWISE | 26 | 3♥ | ♣A | +1 | -1 |
| -4.6 | Round 7 | WONDERS INFO | 7 | 4♠x | ♥3 | -1 | -8 |
| -4.7 | Round 7 | WONDERS INFO | 5 | 5♠x | ♥J | -1 | -7 |
| -4.7 | Round 10 | HEILONGJIANG YAXUAN | 1 | 3♣ | ♥2 | -4 | -7 |
| -4.9 | Round 4 | PETRA | 7 | 3N | ♥2 | -1 | -6 |
| -5.1 | Round 7 | WONDERS INFO | 10 | 3♥ | ♣Q | -1 | -6 |
| -5.8 | Round 10 | HEILONGJIANG YAXUAN | 8 | 3Nx | ♠3 | -2 | -9 |
| -6.9 | Round 3 | SHAN FENG | 27 | 3N | ♥8 | +1 | -7 |
| -7.1 | Round 9 | BLUEMAROON | 22 | 4♠ | ♣5 | = | -5 |
| -7.6 | Round 3 | SHAN FENG | 23 | 2♥x | ♣K | -1 | -10 |
| -7.6 | Round 12 | WELLWISE | 28 | 3♦ | ♣9 | = | -11 |
| -7.7 | Round 13 | FAIRY TALE | 8 | 6♠ | ♠3 | -2 | -17 |
| -8.3 | Round 6 | ZHANG | 24 | 3N | ♠K | = | -7 |
| -9.0 | Round 9 | BLUEMAROON | 25 | 3N | ♦5 | = | -10 |
| -9.8 | Round 6 | ZHANG | 23 | 4♥ | ♣5 | = | -10 |
| -10.4 | Round 13 | FAIRY TALE | 5 | 6♦ | ♠4 | -1 | -16 |
| -12.4 | Round 12 | WELLWISE | 27 | 7♦x | ♣J | -3 | -15 |