CHEN Yichao · ORG
vs par split: bidding -0.40 · play -0.36
Strength of schedule: opponents averaged -0.07/bd (an easy draw) → opponent-adjusted -0.38/bd
Card play — on target: opening leads 81.2% #139 of 476 · declarer play 62.5% #435 of 478 · defence 76.3% #426 of 478
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 50.0% (6) | 100.0% (10) |
| Declarer play | 62.5% (8) | 62.5% (8) |
| Defence | 69.2% (13) | 80.0% (25) |
Opening leads by suit led: ♠ 100.0% (2) · ♥ 57.1% (7) · ♦ 100.0% (6) · ♣ 100.0% (1)
vs par by strain: NT -1.45 (31) · a suit -0.33 (49)
vs par by level: part-score +0.40 (35) · game -1.77 (39) · slam -1.00 (6)
By role: declaring -0.08/bd (-2.64 vs par · 42) · defending -0.56/bd (+1.32 vs par · 38)
By vulnerability: vulnerable -0.13/bd (-0.23 vs par · 43) · not vulnerable -0.52/bd (-1.38 vs par · 37)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | J.Hu | N.L'Ecuyer – P.Street | Open | 10 | +7.4 | +0.74 | +3.80 |
| Round 3 | J.Hu | B.Combescure – C.Grosset | Closed | 10 | -0.2 | -0.02 | -0.60 |
| Round 4 | J.Hu | T.Helness – G.Helgemo | Open | 10 | +4.5 | +0.45 | -0.40 |
| Round 5 | J.Hu | I.Rotaru – R.Nistor | Open | 10 | -6.6 | -0.66 | -2.50 |
| Round 6 | J.Hu | E.Rodwell – J.Meckstroth | Open | 10 | -21.4 | -2.14 | +0.30 |
| Round 7 | J.Hu | W.Watson – E.Hung | Open | 10 | +9.2 | +0.92 | -0.70 |
| Round 8 | J.Hu | Y.Zhao – X.Li | Open | 10 | +2.7 | +0.27 | -2.10 |
| Round 10 | J.Hu | M.Di Franco – A.Manno | Closed | 10 | -20.2 | -2.02 | -3.90 |
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 7 | MANDALA | 14 | 4♥x | ♠10 | = | +10 |
| +7.1 | Round 8 | CHINA OPEN 2 | 7 | 3NT | ♣K | = | +0 |
| +6.5 | Round 8 | CHINA OPEN 2 | 6 | 2NT | ♥2 | = | +7 |
| +5.2 | Round 8 | CHINA OPEN 2 | 8 | 4♠ | ♠3 | -1 | +5 |
| +4.0 | Round 1 | FROGS | 2 | 3♥ | ♦10 | -1 | +6 |
| +4.0 | Round 4 | ZIMMERMANN | 19 | 4♥ | ♣5 | -1 | +5 |
| +3.6 | Round 10 | DE MICHELIS | 26 | 3NT | ♥10 | = | +0 |
| +3.5 | Round 3 | HATTIE | 3 | 3NT | ♥A | -3 | +0 |
| +3.4 | Round 4 | ZIMMERMANN | 13 | 1NT | ♥A | +2 | +1 |
| +3.4 | Round 5 | MORAN | 22 | 3NT | ♥3 | -1 | +5 |
| +3.3 | Round 4 | ZIMMERMANN | 14 | 4♠ | ♣3 | = | +1 |
| +3.3 | Round 4 | ZIMMERMANN | 17 | 3NT | ♦3 | +2 | +1 |
| +2.9 | Round 1 | FROGS | 8 | 3♦ | ♥A | -2 | +8 |
| +2.8 | Round 6 | NICKELL | 8 | 2♣ | ♣2 | = | +5 |
| +2.7 | Round 1 | FROGS | 6 | 3NT | ♥4 | = | -1 |
| +2.6 | Round 3 | HATTIE | 8 | 2♣ | ♣7 | = | +5 |
| +2.6 | Round 4 | ZIMMERMANN | 12 | 3♦ | ♥4 | = | +5 |
| +2.5 | Round 1 | FROGS | 7 | 3NT | ♠6 | = | +0 |
| +2.5 | Round 3 | HATTIE | 10 | 4♠ | ♣6 | -1 | -6 |
| +2.4 | Round 7 | MANDALA | 16 | 6♠ | ♥Q | +1 | -11 |
| +1.8 | Round 7 | MANDALA | 17 | 2♥ | ♣A | = | +0 |
| +1.7 | Round 1 | FROGS | 4 | 5♦ | ♥7 | +1 | +10 |
| +1.7 | Round 6 | NICKELL | 9 | 2♥ | ♣A | -1 | +4 |
| +1.3 | Round 7 | MANDALA | 15 | 4♥ | ♠9 | = | +0 |
| +1.2 | Round 10 | DE MICHELIS | 24 | 6NT | ♣A | = | +0 |
| +1.1 | Round 5 | MORAN | 24 | 6♦ | ♦3 | = | -2 |
| +0.7 | Round 6 | NICKELL | 10 | 2NT | ♦Q | -1 | +6 |
| +0.7 | Round 8 | CHINA OPEN 2 | 9 | 2♠ | ♥2 | +1 | +0 |
| +0.2 | Round 1 | FROGS | 1 | 1NT | ♠8 | -2 | -1 |
| +0.2 | Round 8 | CHINA OPEN 2 | 2 | 2♥ | ♥2 | = | -7 |
| +0.1 | Round 3 | HATTIE | 7 | 3NT | ♠2 | +1 | +0 |
| -0.0 | Round 1 | FROGS | 5 | 2♦ | ♦6 | -1 | +5 |
| -0.0 | Round 3 | HATTIE | 4 | 2♦ | ♥A | -1 | +0 |
| -0.0 | Round 3 | HATTIE | 9 | 3NT | ♦3 | = | -1 |
| -0.0 | Round 4 | ZIMMERMANN | 18 | 2♥ | ♣6 | = | +0 |
| -0.0 | Round 5 | MORAN | 26 | 2♠ | ♦J | = | +1 |
| +0.0 | Round 5 | MORAN | 30 | 4♠ | ♥A | = | +0 |
| -0.2 | Round 7 | MANDALA | 12 | 2♣ | ♥Q | +1 | -1 |
| -0.3 | Round 6 | NICKELL | 4 | 4♦ | ♠Q | = | +10 |
| -0.3 | Round 10 | DE MICHELIS | 30 | 2♠ | ♦2 | -1 | -2 |
| -0.4 | Round 1 | FROGS | 10 | 4♥ | ♠5 | +1 | +0 |
| -0.4 | Round 4 | ZIMMERMANN | 16 | 1NT | ♠J | -1 | +0 |
| -0.5 | Round 7 | MANDALA | 18 | 5♣ | ♦7 | +1 | +1 |
| -0.6 | Round 5 | MORAN | 25 | 3NT | ♥3 | +2 | -1 |
| -0.8 | Round 5 | MORAN | 29 | 3NT | ♥8 | +2 | +0 |
| -0.8 | Round 7 | MANDALA | 20 | 2♠ | ♠2 | +1 | +0 |
| -0.8 | Round 10 | DE MICHELIS | 25 | 3NT | ♥10 | +2 | +0 |
| -1.0 | Round 5 | MORAN | 27 | 1NT | ♦7 | -1 | -5 |
| -1.2 | Round 3 | HATTIE | 2 | 3♠ | ♣A | = | +4 |
| -1.2 | Round 7 | MANDALA | 13 | 7♥x | ♦K | -5 | +7 |
| -1.3 | Round 6 | NICKELL | 7 | 3♣ | ♥6 | +2 | +0 |
| -1.5 | Round 10 | DE MICHELIS | 29 | 3NT | ♥2 | +2 | -1 |
| -1.6 | Round 8 | CHINA OPEN 2 | 3 | 3NT | ♦J | -1 | -12 |
| -1.6 | Round 10 | DE MICHELIS | 28 | 2NT | ♠A | -2 | +0 |
| -2.0 | Round 7 | MANDALA | 11 | 3NT | ♥8 | -1 | -5 |
| -2.1 | Round 5 | MORAN | 28 | 2♥ | ♣K | = | +0 |
| -2.2 | Round 6 | NICKELL | 3 | 2♠ | ♦7 | +1 | +0 |
| -2.3 | Round 3 | HATTIE | 6 | 2♠ | ♣3 | -1 | -5 |
| -2.3 | Round 6 | NICKELL | 1 | 3♦ | ♠A | = | -5 |
| -2.4 | Round 1 | FROGS | 9 | 3NT | ♥3 | = | +0 |
| -2.5 | Round 4 | ZIMMERMANN | 20 | 2♠ | ♦A | +1 | -6 |
| -2.6 | Round 3 | HATTIE | 1 | 2NT | ♦Q | +1 | -1 |
| -2.6 | Round 5 | MORAN | 23 | 4♠ | ♥A | -1 | -12 |
| -2.7 | Round 8 | CHINA OPEN 2 | 5 | 3NT | ♥A | +2 | +0 |
| -2.8 | Round 3 | HATTIE | 5 | 3♦ | ♣A | -3 | -2 |
| -3.1 | Round 8 | CHINA OPEN 2 | 4 | 4♥ | ♠10 | -1 | -6 |
| -3.1 | Round 10 | DE MICHELIS | 27 | 4♥ | ♦Q | -1 | -10 |
| -3.8 | Round 1 | FROGS | 3 | 6♠ | ♣A | +1 | +11 |
| -3.8 | Round 4 | ZIMMERMANN | 11 | 4♠ | ♦A | = | +0 |
| -3.9 | Round 10 | DE MICHELIS | 22 | 2♥ | ♣3 | +2 | -10 |
| -4.0 | Round 5 | MORAN | 21 | 3NT | ♥3 | +3 | -11 |
| -4.1 | Round 7 | MANDALA | 19 | 1NT | ♥Q | -1 | -8 |
| -4.1 | Round 8 | CHINA OPEN 2 | 10 | 3NT | ♦10 | -2 | -3 |
| -5.1 | Round 10 | DE MICHELIS | 23 | 5♣ | ♦10 | -1 | -6 |
| -5.4 | Round 4 | ZIMMERMANN | 15 | 6♦x | ♥3 | -1 | -11 |
| -5.5 | Round 8 | CHINA OPEN 2 | 1 | 3NT | ♥3 | -1 | -5 |
| -5.7 | Round 6 | NICKELL | 5 | 4♠x | ♥9 | -2 | -5 |
| -6.4 | Round 6 | NICKELL | 2 | 5♥ | ♦10 | +1 | -5 |
| -8.4 | Round 6 | NICKELL | 6 | 4♠ | ♣A | = | -7 |
| -8.7 | Round 10 | DE MICHELIS | 21 | 3NT | ♣4 | -1 | -10 |