CHEN Yichao · ZHIYIJIA
107rank
+58.4Butler · 150 bds
+0.39per board
±4.2swing
+0.97vs par /bd · #23/535
+0.73adjusted /bd
by round
vs par split: bidding +0.77 · play +0.19
Strength of schedule: opponents averaged +0.34/bd (a tough draw) → opponent-adjusted +0.73/bd
Card play — on target: opening leads 83.3% #118 of 534 · declarer play 71.1% #288 of 534 · defence 94.9% #11 of 535
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 71.4% (7) | 86.2% (29) |
| Declarer play | 63.6% (11) | 74.1% (27) |
| Defence | 90.5% (21) | 96.5% (57) |
Opening leads by suit led: ♠ 100.0% (6) · ♥ 87.5% (8) · ♦ 81.8% (11) · ♣ 72.7% (11)
vs par by strain: NT +1.28 (43) · a suit +0.84 (107)
vs par by level: part-score +0.45 (60) · game +1.96 (78) · slam -2.92 (12)
By role: declaring +0.07/bd (-1.44 vs par · 72) · defending +0.68/bd (+3.19 vs par · 78)
By vulnerability: vulnerable +0.97/bd (+1.24 vs par · 75) · not vulnerable -0.20/bd (+0.69 vs par · 75)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | J.Hu | G.Finikiotis – E.Fanos | Closed | 10 | +47.4 | +4.74 | +6.40 |
| Round 2 | J.Hu | J.Romanowski – M.Rossard | Closed | 10 | +6.4 | +0.64 | +3.50 |
| Round 3 | J.Hu | P.Pereira – P.Dias | Closed | 10 | +1.3 | +0.13 | -0.60 |
| Round 4 | J.Hu | J.Lall – K.Bathurst | Closed | 10 | -5.9 | -0.59 | +0.20 |
| Round 5 | J.Hu | P.Adad – F.Mateos-Ruiz | Closed | 10 | +23.7 | +2.37 | +3.20 |
| Round 6 | J.Hu | J.Li – Z.Fu | Closed | 10 | +13.7 | +1.37 | +2.00 |
| Round 7 | J.Hu | G.Cohler – S.Winestock | Closed | 10 | +3.4 | +0.34 | +0.30 |
| Round 8 | J.Hu | M.Klukowski – P.Gawrys | Closed | 10 | -15.9 | -1.59 | -0.50 |
| Round 9 | J.Hu | C.Ju – Z.Shi | Closed | 10 | -2.7 | -0.27 | -0.70 |
| Round 10 | J.Hu | K.Gjaldbaek – K.Konow | Closed | 10 | +5.2 | +0.52 | +2.20 |
| Round 11 | J.Hu | C.Yeh – Y.Zhang | Closed | 10 | -21.1 | -2.11 | -3.40 |
| Round 12 | J.Hu | S.Auken – R.Welland | Closed | 10 | +4.7 | +0.47 | +0.20 |
| Round 13 | J.Hu | B.Igla – F.Piedra | Closed | 10 | -20.4 | -2.04 | +0.10 |
| Round 14 | J.Hu | J.Dai – L.Yang | Open | 10 | +2.8 | +0.28 | +0.80 |
| Round 15 | J.Hu | G.Borevkovic – K.Marinovski | Open | 10 | +15.8 | +1.58 | +0.80 |
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 |
|---|---|---|---|---|---|---|---|
| +13.6 | Round 5 | ADAD | 20 | 4♠x | ♦K | -4 | +11 |
| +9.8 | Round 2 | BLUE NOTE | 13 | 5♦ | ♦10 | +2 | +12 |
| +9.5 | Round 15 | CROATIA | 27 | 3NT | ♣6 | -2 | +11 |
| +9.0 | Round 1 | FINIKIOTIS | 2 | 6♠ | ♦A | = | +5 |
| +8.8 | Round 13 | PIEDRA | 8 | 4♠x | ♦8 | -3 | +9 |
| +8.6 | Round 4 | LALL | 6 | 3NT | ♦4 | = | +7 |
| +8.5 | Round 2 | BLUE NOTE | 19 | 4♠ | ♥9 | -1 | +11 |
| +8.2 | Round 1 | FINIKIOTIS | 6 | 3NT | ♦Q | -1 | +11 |
| +8.1 | Round 1 | FINIKIOTIS | 8 | 2♥ | ♦2 | -1 | +10 |
| +7.4 | Round 15 | CROATIA | 26 | 3NTx | ♠6 | = | +4 |
| +6.6 | Round 6 | PD TIMES | 26 | 3NT | ♠K | -1 | +16 |
| +6.2 | Round 1 | FINIKIOTIS | 10 | 4♠ | ♣A | +2 | +10 |
| +5.6 | Round 5 | ADAD | 15 | 4♥ | ♣A | -1 | +9 |
| +5.5 | Round 7 | THE MAGICDOGS | 4 | 3NT | ♦8 | -1 | +12 |
| +5.4 | Round 5 | ADAD | 17 | 3♥ | ♣10 | +1 | +10 |
| +5.3 | Round 7 | THE MAGICDOGS | 1 | 5♥ | ♠Q | -1 | +4 |
| +5.3 | Round 13 | PIEDRA | 9 | 4♦ | ♥A | = | +1 |
| +5.2 | Round 8 | MAZURKIEWICZ | 19 | 5♣ | ♥2 | -2 | +8 |
| +5.0 | Round 1 | FINIKIOTIS | 3 | 1NT | ♦9 | +4 | +6 |
| +5.0 | Round 15 | CROATIA | 22 | 4♥x | ♦4 | -1 | +6 |
| +4.5 | Round 15 | CROATIA | 29 | 3NT | ♣10 | = | -1 |
| +4.2 | Round 2 | BLUE NOTE | 14 | 2♠ | ♥10 | = | +5 |
| +4.1 | Round 10 | MINISTRY OF BRIDGE | 1 | 3NT | ♦3 | = | -1 |
| +4.1 | Round 11 | YBM | 19 | 3NT | ♠2 | +2 | +1 |
| +4.1 | Round 12 | GERMANY OPEN | 24 | 3NT | ♦3 | -1 | +10 |
| +4.0 | Round 6 | PD TIMES | 21 | 5♣ | ♠K | = | -5 |
| +3.9 | Round 10 | MINISTRY OF BRIDGE | 3 | 4♥ | ♣2 | -1 | +12 |
| +3.8 | Round 2 | BLUE NOTE | 16 | 3NT | ♣4 | = | +11 |
| +3.7 | Round 14 | CHINA OPEN | 12 | 2♠ | ♥K | -1 | +5 |
| +3.6 | Round 14 | CHINA OPEN | 15 | 2NT | ♠3 | -1 | +4 |
| +3.3 | Round 1 | FINIKIOTIS | 1 | 2♥ | ♦A | = | +5 |
| +3.2 | Round 3 | PESSOA | 23 | 1♥x | ♠A | -3 | -11 |
| +3.2 | Round 3 | PESSOA | 28 | 5♠x | ♦Q | -1 | +5 |
| +3.0 | Round 2 | BLUE NOTE | 20 | 2♠ | ♥3 | = | +6 |
| +3.0 | Round 6 | PD TIMES | 23 | 3NT | ♦3 | +2 | +1 |
| +3.0 | Round 6 | PD TIMES | 25 | 4♥ | ♣Q | -3 | +10 |
| +2.8 | Round 7 | THE MAGICDOGS | 5 | 2♠ | ♥7 | = | +0 |
| +2.7 | Round 10 | MINISTRY OF BRIDGE | 4 | 4♠ | ♦A | -1 | +6 |
| +2.6 | Round 3 | PESSOA | 29 | 3NT | ♥9 | +1 | -1 |
| +2.6 | Round 12 | GERMANY OPEN | 30 | 3NT | ♥7 | +1 | +0 |
| +2.3 | Round 1 | FINIKIOTIS | 7 | 3♦ | ♣A | +1 | +0 |
| +2.2 | Round 1 | FINIKIOTIS | 4 | 6♠x | ♣6 | -3 | +7 |
| +2.2 | Round 5 | ADAD | 19 | 2♠ | ♣6 | +1 | +1 |
| +2.2 | Round 6 | PD TIMES | 30 | 2♠ | ♥Q | = | +0 |
| +2.1 | Round 9 | JINSHUO | 29 | 2NT | ♥Q | = | +0 |
| +2.1 | Round 15 | CROATIA | 24 | 3♣ | ♣6 | -1 | +3 |
| +2.0 | Round 11 | YBM | 13 | 3NT | ♠K | +1 | +1 |
| +2.0 | Round 15 | CROATIA | 23 | 2♠ | ♦Q | +2 | +2 |
| +1.9 | Round 1 | FINIKIOTIS | 9 | 3♥ | ♣9 | +1 | +9 |
| +1.9 | Round 8 | MAZURKIEWICZ | 18 | 4♥ | ♣K | = | -1 |
| +1.9 | Round 11 | YBM | 12 | 4♥ | ♣Q | +1 | +0 |
| +1.8 | Round 14 | CHINA OPEN | 13 | 2♠ | ♦7 | = | +1 |
| +1.6 | Round 3 | PESSOA | 25 | 4♣ | ♦A | +1 | +7 |
| +1.6 | Round 4 | LALL | 5 | 2♠ | ♠10 | +1 | +0 |
| +1.5 | Round 7 | THE MAGICDOGS | 10 | 2♥ | ♦3 | -1 | -1 |
| +1.5 | Round 10 | MINISTRY OF BRIDGE | 7 | 3♦ | ♦A | -1 | +5 |
| +1.4 | Round 10 | MINISTRY OF BRIDGE | 5 | 4♠ | ♦A | -1 | +5 |
| +1.4 | Round 14 | CHINA OPEN | 11 | 3♥ | ♠K | -2 | +0 |
| +1.2 | Round 1 | FINIKIOTIS | 5 | 3NT | ♠Q | +1 | +1 |
| +1.2 | Round 12 | GERMANY OPEN | 26 | 3NT | ♥3 | +2 | +1 |
| +1.1 | Round 11 | YBM | 11 | 2♠ | ♦2 | = | +0 |
| +1.0 | Round 6 | PD TIMES | 24 | 5♣ | ♥5 | = | -1 |
| +0.9 | Round 3 | PESSOA | 30 | 5♠ | ♥8 | = | +0 |
| +0.9 | Round 5 | ADAD | 16 | 4♠ | ♣A | -1 | +5 |
| +0.8 | Round 8 | MAZURKIEWICZ | 16 | 3♦ | ♠A | -2 | +11 |
| +0.8 | Round 14 | CHINA OPEN | 17 | 1NT | ♣Q | +3 | -6 |
| +0.7 | Round 8 | MAZURKIEWICZ | 12 | 3♦ | ♦7 | -1 | +4 |
| +0.5 | Round 9 | JINSHUO | 27 | 2♠ | ♦8 | +2 | +1 |
| +0.5 | Round 12 | GERMANY OPEN | 29 | 4♥ | ♠K | +1 | +0 |
| +0.4 | Round 6 | PD TIMES | 27 | 4♠ | ♦3 | +1 | +0 |
| +0.3 | Round 5 | ADAD | 12 | 4♥ | ♠10 | -2 | +1 |
| +0.3 | Round 5 | ADAD | 13 | 3♠ | ♦9 | +1 | -1 |
| +0.3 | Round 7 | THE MAGICDOGS | 3 | 3NT | ♦Q | -1 | +5 |
| +0.3 | Round 15 | CROATIA | 21 | 4♠ | ♣J | +1 | +0 |
| +0.1 | Round 9 | JINSHUO | 21 | 1NT | ♦A | -3 | -10 |
| -0.0 | Round 11 | YBM | 18 | 1♣ | ♦3 | +1 | -1 |
| -0.1 | Round 3 | PESSOA | 24 | 4♠ | ♥3 | = | -1 |
| -0.1 | Round 6 | PD TIMES | 28 | 1NT | ♣K | -1 | -1 |
| -0.1 | Round 9 | JINSHUO | 22 | 4♥ | ♣Q | +1 | +0 |
| -0.1 | Round 9 | JINSHUO | 23 | 2♦ | ♥K | = | +1 |
| -0.1 | Round 9 | JINSHUO | 24 | 3♦ | ♣J | -1 | -4 |
| -0.1 | Round 12 | GERMANY OPEN | 21 | 3♠ | ♠5 | -2 | -6 |
| -0.2 | Round 14 | CHINA OPEN | 19 | 4♥ | ♦4 | +2 | +13 |
| -0.3 | Round 3 | PESSOA | 26 | 3NT | ♣2 | +1 | +0 |
| -0.3 | Round 10 | MINISTRY OF BRIDGE | 8 | 4♦ | ♣K | +1 | +7 |
| -0.3 | Round 12 | GERMANY OPEN | 25 | 2♠ | ♦J | = | +1 |
| -0.4 | Round 8 | MAZURKIEWICZ | 15 | 6♦ | ♥Q | = | +12 |
| -0.4 | Round 9 | JINSHUO | 25 | 3NT | ♠6 | +2 | +13 |
| -0.4 | Round 9 | JINSHUO | 28 | 4♥ | ♥4 | = | +0 |
| -0.4 | Round 10 | MINISTRY OF BRIDGE | 2 | 3♥ | ♠K | +1 | +2 |
| -0.4 | Round 14 | CHINA OPEN | 18 | 3♠ | ♥5 | -1 | +4 |
| -0.5 | Round 4 | LALL | 10 | 1NT | ♦K | +1 | +0 |
| -0.5 | Round 12 | GERMANY OPEN | 28 | 3♠ | ♣8 | = | +0 |
| -0.6 | Round 4 | LALL | 7 | 4♥ | ♠4 | +2 | +13 |
| -0.6 | Round 7 | THE MAGICDOGS | 2 | 2♠ | ♠3 | -1 | -2 |
| -0.7 | Round 4 | LALL | 9 | 3NT | ♥3 | = | -2 |
| -0.7 | Round 9 | JINSHUO | 30 | 2♥ | ♣4 | = | +0 |
| -0.7 | Round 12 | GERMANY OPEN | 22 | 4♠ | ♣K | = | +1 |
| -0.8 | Round 4 | LALL | 2 | 3♣ | ♠4 | = | +1 |
| -0.8 | Round 10 | MINISTRY OF BRIDGE | 6 | 5♣ | ♥7 | +1 | -3 |
| -0.8 | Round 13 | PIEDRA | 2 | 5♦ | ♠Q | +1 | +10 |
| -0.9 | Round 11 | YBM | 16 | 6♣x | ♦10 | -2 | +5 |
| -0.9 | Round 12 | GERMANY OPEN | 23 | 3NT | ♥K | +2 | +0 |
| -0.9 | Round 13 | PIEDRA | 10 | 1NT | ♠4 | -1 | +1 |
| -1.1 | Round 5 | ADAD | 14 | 3NT | ♥4 | -1 | -4 |
| -1.2 | Round 2 | BLUE NOTE | 12 | 3NT | ♠4 | +2 | +0 |
| -1.2 | Round 5 | ADAD | 11 | 4♥ | ♣5 | +1 | -1 |
| -1.2 | Round 7 | THE MAGICDOGS | 6 | 2♦ | ♥4 | +2 | +0 |
| -1.2 | Round 8 | MAZURKIEWICZ | 13 | 1NT | ♠A | +2 | -1 |
| -1.2 | Round 8 | MAZURKIEWICZ | 14 | 4♠x | ♣9 | -1 | +0 |
| -1.2 | Round 12 | GERMANY OPEN | 27 | 4♠ | ♣2 | -1 | -5 |
| -1.3 | Round 13 | PIEDRA | 4 | 5♠ | ♦A | = | +0 |
| -1.5 | Round 3 | PESSOA | 27 | 3NT | ♣10 | = | +0 |
| -1.6 | Round 4 | LALL | 8 | 4♥ | ♠J | = | +1 |
| -1.7 | Round 4 | LALL | 3 | 3♠ | ♠J | = | +0 |
| -1.8 | Round 6 | PD TIMES | 29 | 2♥ | ♣10 | +1 | +0 |
| -1.8 | Round 7 | THE MAGICDOGS | 7 | 3♣ | ♠A | = | -11 |
| -1.8 | Round 14 | CHINA OPEN | 16 | 2♥ | ♣3 | = | +0 |
| -2.1 | Round 13 | PIEDRA | 1 | 3♦ | ♣A | -1 | +4 |
| -2.3 | Round 5 | ADAD | 18 | 2♦ | ♥10 | = | +1 |
| -2.4 | Round 15 | CROATIA | 25 | 4♥ | ♣10 | +1 | +0 |
| -2.5 | Round 2 | BLUE NOTE | 17 | 2♥ | ♣4 | -1 | -4 |
| -2.5 | Round 2 | BLUE NOTE | 18 | 5♦ | ♣A | = | +11 |
| -2.5 | Round 14 | CHINA OPEN | 14 | 1NT | ♣3 | -2 | -5 |
| -2.9 | Round 3 | PESSOA | 22 | 3♠ | ♥10 | -1 | -5 |
| -3.1 | Round 4 | LALL | 1 | 4♠ | ♣A | -2 | -5 |
| -3.2 | Round 13 | PIEDRA | 5 | 3NT | ♥5 | = | -3 |
| -3.3 | Round 10 | MINISTRY OF BRIDGE | 9 | 3NT | ♣A | -1 | -5 |
| -3.6 | Round 9 | JINSHUO | 26 | 3NT | ♥J | -2 | -8 |
| -3.6 | Round 10 | MINISTRY OF BRIDGE | 10 | 4♥ | ♦A | -1 | -6 |
| -3.6 | Round 14 | CHINA OPEN | 20 | 3♦ | ♠6 | -3 | -8 |
| -3.8 | Round 7 | THE MAGICDOGS | 9 | 7♣ | ♣7 | = | +2 |
| -3.8 | Round 11 | YBM | 15 | 2♠ | ♥8 | -1 | -4 |
| -4.6 | Round 6 | PD TIMES | 22 | 6NT | ♥4 | = | +0 |
| -4.6 | Round 7 | THE MAGICDOGS | 8 | 3NT | ♠A | -2 | -6 |
| -4.9 | Round 8 | MAZURKIEWICZ | 11 | 4♥ | ♠5 | -1 | -10 |
| -4.9 | Round 8 | MAZURKIEWICZ | 17 | 6♣ | ♦A | -2 | -11 |
| -5.4 | Round 3 | PESSOA | 21 | 3NT | ♦4 | = | +0 |
| -5.6 | Round 13 | PIEDRA | 7 | 4♥ | ♠10 | -1 | -12 |
| -6.1 | Round 2 | BLUE NOTE | 11 | 5♣x | ♠K | -2 | -9 |
| -6.3 | Round 11 | YBM | 17 | 5♣x | ♠J | -2 | -9 |
| -6.3 | Round 15 | CROATIA | 28 | 2♣ | ♦K | -1 | -10 |
| -6.3 | Round 15 | CROATIA | 30 | 3NT | ♦3 | +1 | -7 |
| -7.1 | Round 4 | LALL | 4 | 6♥ | ♦6 | -1 | -13 |
| -8.5 | Round 11 | YBM | 20 | 5♦ | ♣4 | = | -10 |
| -9.7 | Round 13 | PIEDRA | 3 | 7NT | ♥2 | = | +0 |
| -10.6 | Round 2 | BLUE NOTE | 15 | 6♥ | ♥7 | = | -8 |
| -10.7 | Round 11 | YBM | 14 | 7♠ | ♠2 | -1 | -17 |
| -10.9 | Round 13 | PIEDRA | 6 | 4♥x | ♦J | -2 | -9 |
| -11.9 | Round 8 | MAZURKIEWICZ | 20 | 6♣ | ♥J | -1 | -17 |