CHEN Rong-Jenn · CHINESE TAIPEI
164rank
+31.1Butler · 90 bds
+0.35per board
±4.1swing
-0.91vs par /bd · #389/471
+0.63adjusted /bd
by round
vs par split: bidding -1.32 · play +0.41
Strength of schedule: opponents averaged +0.28/bd (a tough draw) → opponent-adjusted +0.63/bd
Card play — on target: opening leads 85.2% #90 of 469 · declarer play 79.2% #137 of 469 · defence 82.2% #307 of 471
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 60.0% (5) | 90.9% (22) |
| Declarer play | 100.0% (4) | 75.0% (20) |
| Defence | 55.6% (9) | 88.9% (36) |
Opening leads by suit led: ♠ 60.0% (5) · ♥ 100.0% (7) · ♦ 100.0% (5) · ♣ 80.0% (10)
vs par by strain: NT -1.21 (19) · a suit -0.83 (71)
vs par by level: part-score -1.53 (36) · game -0.15 (46) · slam -2.50 (8)
By role: declaring +1.64/bd (-1.89 vs par · 45) · defending -0.95/bd (+0.07 vs par · 45)
By vulnerability: vulnerable +0.19/bd (-0.69 vs par · 45) · not vulnerable +0.50/bd (-1.13 vs par · 45)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 3 | J.Huang | E.Covarrubias – P.Riedel | Closed | 10 | -10.8 | -1.08 | -1.40 |
| Round 4 | J.Huang | D.Jacob – J.Czyzowicz | Closed | 10 | +12.1 | +1.21 | -0.50 |
| Round 6 | J.Huang | J.Campos – M.Villas-Boas | Open | 10 | +2.5 | +0.25 | -2.00 |
| Round 7 | J.Huang | D.Harris – M.Lewis | Closed | 10 | +3.2 | +0.32 | +0.00 |
| Round 9 | J.Huang | S.Lev – B.Hamman | Open | 10 | +28.0 | +2.80 | +0.50 |
| Round 10 | J.Huang | E.Tse – R.Ling | Open | 10 | +8.6 | +0.86 | +1.10 |
| Round 13 | J.Huang | Y.Lin – L.He | Open | 10 | +3.1 | +0.31 | +1.60 |
| Round 14 | J.Huang | P.Balakrishnan – R.Tewari | Closed | 10 | +3.8 | +0.38 | -3.50 |
| Round 15 | J.Huang | J.Dai – L.Yang | Closed | 10 | -19.4 | -1.94 | -4.00 |
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 |
|---|---|---|---|---|---|---|---|
| +13.1 | Round 9 | SCHWARTZ | 30 | 3♦x | ♥8 | -5 | +12 |
| +11.7 | Round 13 | CHINA PINGAN | 9 | 6♠ | ♠3 | = | +11 |
| +9.1 | Round 4 | CANALIENS | 9 | 7♠ | ♥A | = | +0 |
| +7.9 | Round 6 | DORSI | 29 | 3NT | ♥6 | = | +0 |
| +7.1 | Round 7 | MACHALE | 1 | 3NT | ♥7 | +3 | +5 |
| +6.9 | Round 3 | CHILE | 23 | 4♥ | ♦4 | = | +3 |
| +6.8 | Round 6 | DORSI | 26 | 6♠ | ♠7 | = | +0 |
| +5.9 | Round 14 | NADAR | 18 | 4♥ | ♥3 | +1 | +0 |
| +5.8 | Round 9 | SCHWARTZ | 26 | 4♠ | ♣3 | = | +0 |
| +5.3 | Round 9 | SCHWARTZ | 29 | 5♦ | ♦6 | -1 | +6 |
| +5.2 | Round 4 | CANALIENS | 4 | 4♥ | ♠7 | -1 | +12 |
| +5.0 | Round 10 | HONG KONG SENIOR | 3 | 4♠ | ♦Q | -5 | +8 |
| +5.0 | Round 14 | NADAR | 11 | 6♠ | ♣J | +1 | -11 |
| +4.6 | Round 13 | CHINA PINGAN | 6 | 4♠ | ♣K | +2 | +17 |
| +4.4 | Round 14 | NADAR | 15 | 3NT | ♥6 | = | +0 |
| +4.3 | Round 14 | NADAR | 16 | 5♣x | ♣2 | -1 | +5 |
| +4.0 | Round 10 | HONG KONG SENIOR | 7 | 1NT | ♥10 | = | +6 |
| +3.8 | Round 9 | SCHWARTZ | 25 | 3♥ | ♦A | -2 | +0 |
| +3.8 | Round 10 | HONG KONG SENIOR | 2 | 1NT | ♠7 | -2 | +0 |
| +3.0 | Round 6 | DORSI | 25 | 3♣ | ♥Q | = | +0 |
| +2.8 | Round 7 | MACHALE | 8 | 4♠ | ♠4 | +1 | +0 |
| +2.7 | Round 15 | SAIC VW | 27 | 2♦ | ♠9 | -2 | +0 |
| +2.6 | Round 9 | SCHWARTZ | 28 | 6♥ | ♦Q | = | -11 |
| +2.6 | Round 10 | HONG KONG SENIOR | 10 | 4♥ | ♥2 | -1 | +6 |
| +2.4 | Round 4 | CANALIENS | 10 | 5♣ | ♠3 | = | +9 |
| +2.4 | Round 9 | SCHWARTZ | 27 | 4♥ | ♦4 | +2 | +11 |
| +2.2 | Round 4 | CANALIENS | 2 | 3♠ | ♦K | -2 | -1 |
| +2.0 | Round 13 | CHINA PINGAN | 5 | 4♠ | ♣4 | -1 | +10 |
| +1.9 | Round 9 | SCHWARTZ | 21 | 2♠ | ♥4 | = | -1 |
| +1.3 | Round 3 | CHILE | 27 | 1NT | ♣9 | +1 | +0 |
| +1.3 | Round 4 | CANALIENS | 6 | 4♠ | ♥3 | +1 | -10 |
| +1.3 | Round 4 | CANALIENS | 7 | 3NT | ♣10 | +2 | +1 |
| +1.3 | Round 10 | HONG KONG SENIOR | 6 | 4♠ | ♣A | = | +0 |
| +1.1 | Round 3 | CHILE | 26 | 4♥ | ♦Q | = | +0 |
| +1.1 | Round 7 | MACHALE | 5 | 2♠ | ♠3 | -1 | +1 |
| +1.0 | Round 14 | NADAR | 17 | 1NT | ♦8 | -2 | +0 |
| +0.9 | Round 6 | DORSI | 30 | 2NT | ♠K | -2 | -1 |
| +0.8 | Round 9 | SCHWARTZ | 22 | 2♠ | ♦4 | +1 | +0 |
| +0.7 | Round 7 | MACHALE | 3 | 2♣ | ♣9 | +3 | -6 |
| +0.7 | Round 14 | NADAR | 13 | 3NT | ♥J | +1 | +1 |
| +0.5 | Round 3 | CHILE | 30 | 4♥ | ♠J | +1 | -11 |
| +0.5 | Round 4 | CANALIENS | 5 | 3♠ | ♠Q | +1 | -1 |
| +0.5 | Round 6 | DORSI | 23 | 1NT | ♥4 | +2 | +1 |
| +0.1 | Round 7 | MACHALE | 10 | 2♦ | ♥A | = | +2 |
| +0.1 | Round 15 | SAIC VW | 30 | 3NT | ♣4 | +2 | -1 |
| -0.0 | Round 3 | CHILE | 24 | 4♠ | ♠A | = | +0 |
| -0.1 | Round 10 | HONG KONG SENIOR | 8 | 1♠ | ♥Q | = | +1 |
| -0.1 | Round 13 | CHINA PINGAN | 4 | 3♣ | ♠7 | +1 | -10 |
| -0.1 | Round 14 | NADAR | 14 | 4♠ | ♥Q | +2 | -8 |
| -0.5 | Round 15 | SAIC VW | 24 | 4♠ | ♦K | +1 | +0 |
| -0.6 | Round 15 | SAIC VW | 21 | 3♥ | ♣J | -1 | -3 |
| -0.9 | Round 13 | CHINA PINGAN | 8 | 5♣ | ♥A | +1 | -1 |
| -1.2 | Round 6 | DORSI | 22 | 5♣x | ♦A | -1 | +0 |
| -1.2 | Round 7 | MACHALE | 6 | 4♥ | ♠7 | +1 | +0 |
| -1.2 | Round 7 | MACHALE | 9 | 2♠ | ♦Q | +1 | +0 |
| -1.2 | Round 10 | HONG KONG SENIOR | 9 | 3♦ | ♥Q | +1 | +0 |
| -1.4 | Round 3 | CHILE | 22 | 2♠ | ♥J | +1 | +8 |
| -1.5 | Round 3 | CHILE | 21 | 5♣ | ♦J | -1 | -5 |
| -1.6 | Round 13 | CHINA PINGAN | 3 | 2♥ | ♥5 | +1 | -6 |
| -1.7 | Round 10 | HONG KONG SENIOR | 1 | 5♣ | ♦K | +1 | -11 |
| -1.8 | Round 10 | HONG KONG SENIOR | 5 | 3NT | ♣4 | = | +1 |
| -1.9 | Round 7 | MACHALE | 7 | 4♥ | ♣6 | = | +0 |
| -2.0 | Round 7 | MACHALE | 4 | 4♥ | ♣5 | -2 | -3 |
| -2.0 | Round 13 | CHINA PINGAN | 2 | 3NT | ♥2 | +1 | -1 |
| -2.3 | Round 7 | MACHALE | 2 | 4♥ | ♦8 | = | +1 |
| -2.3 | Round 14 | NADAR | 20 | 3♠ | ♥A | -1 | +0 |
| -2.3 | Round 15 | SAIC VW | 25 | 2♠ | ♣7 | +1 | -1 |
| -2.3 | Round 15 | SAIC VW | 29 | 4♥ | ♥6 | -1 | -6 |
| -2.4 | Round 6 | DORSI | 28 | 4♥ | ♠2 | = | +0 |
| -2.4 | Round 9 | SCHWARTZ | 24 | 4♠ | ♥3 | = | +0 |
| -2.4 | Round 15 | SAIC VW | 28 | 5♦x | ♣Q | -3 | -14 |
| -2.5 | Round 4 | CANALIENS | 3 | 3♥ | ♠K | = | -1 |
| -2.5 | Round 6 | DORSI | 21 | 5♣x | ♥A | -3 | -4 |
| -2.6 | Round 14 | NADAR | 12 | 2♠ | ♥5 | = | -11 |
| -2.9 | Round 13 | CHINA PINGAN | 7 | 3NT | ♣A | -1 | -6 |
| -3.0 | Round 6 | DORSI | 27 | 3♥x | ♣4 | -2 | -9 |
| -3.0 | Round 13 | CHINA PINGAN | 1 | 4♠ | ♣2 | = | +0 |
| -3.3 | Round 3 | CHILE | 25 | 3♠ | ♦4 | -1 | +2 |
| -3.3 | Round 10 | HONG KONG SENIOR | 4 | 2♥ | ♣K | = | +0 |
| -3.5 | Round 4 | CANALIENS | 8 | 4♥ | ♠A | -1 | -4 |
| -3.9 | Round 4 | CANALIENS | 1 | 1NT | ♠3 | +3 | -10 |
| -4.5 | Round 15 | SAIC VW | 26 | 2♥ | ♠J | +1 | -7 |
| -4.7 | Round 13 | CHINA PINGAN | 10 | 6♣ | ♥J | = | +2 |
| -4.7 | Round 15 | SAIC VW | 22 | 1NT | ♣4 | = | -10 |
| -4.9 | Round 15 | SAIC VW | 23 | 1NT | ♣3 | = | +2 |
| -5.3 | Round 9 | SCHWARTZ | 23 | 2♠ | ♣9 | = | -12 |
| -5.6 | Round 3 | CHILE | 28 | 3NT | ♥5 | +1 | -11 |
| -7.5 | Round 6 | DORSI | 24 | 4♥ | ♦A | = | -7 |
| -8.8 | Round 3 | CHILE | 29 | 6♠ | ♥K | = | +0 |
| -12.5 | Round 14 | NADAR | 19 | 6♣ | ♣9 | +1 | -11 |