🇨🇳 CHEN Jien · CHINA
12rank
+21.9Butler · 96 bds
+0.23per board
±4.2swing
-0.28vs par /bd
+0.37adjusted /bd
by round
vs par split: bidding -0.04 · play -0.24
Strength of schedule: opponents averaged +0.15/bd (a tough draw) → opponent-adjusted +0.37/bd
Card play — on target: opening leads 94.1% · declarer play 77.4% · defence 92.3%
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 83.3% (6) | 100.0% (11) |
| Declarer play | 61.5% (13) | 88.9% (18) |
| Defence | 100.0% (14) | 88.0% (25) |
Opening leads by suit led: ♠ 100.0% (4) · ♥ 85.7% (7) · ♦ 100.0% (1) · ♣ 100.0% (5)
vs par by strain: NT -1.46 (37) · a suit +0.46 (59)
vs par by level: part-score +0.62 (32) · game -0.36 (59) · slam -5.20 (5)
By role: declaring -0.07/bd (-2.42 vs par · 57) · defending +0.66/bd (+2.85 vs par · 39)
By vulnerability: vulnerable -0.79/bd (-1.42 vs par · 48) · not vulnerable +1.24/bd (+0.85 vs par · 48)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Quarterfinal | P.Wang | J.Meyers – A.Graves | Open | 16 | -13.1 | -0.82 | -0.25 |
| Quarterfinal | P.Wang | H.Weinstein – C.Bjerkan | Closed | 16 | +9.2 | +0.57 | +1.31 |
| Quarterfinal | S.Wu | C.Henner – U.Ivatury | Open | 16 | -0.1 | -0.01 | -0.88 |
| Quarterfinal | P.Wang | C.Bjerkan – H.Weinstein | Closed | 16 | +23.7 | +1.48 | -1.31 |
| Quarterfinal | S.Wu | J.Meyers – A.Graves | Open | 16 | +14.0 | +0.88 | -0.31 |
| Quarterfinal | S.Wu | J.Meyers – A.Graves | Open | 16 | -11.8 | -0.74 | -0.25 |
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 |
|---|---|---|---|---|---|---|---|
| +9.1 | Quarterfinal | 🇺🇸 USA 1 | 8 | 3NT | ♠Q | +1 | +7 |
| +9.1 | Quarterfinal | 🇺🇸 USA 1 | 55 | 6♠ | ♦A | = | +0 |
| +8.0 | Quarterfinal | 🇺🇸 USA 1 | 41 | 4♣ | ♦3 | = | +10 |
| +7.9 | Quarterfinal | 🇺🇸 USA 1 | 89 | 7♥ | ♦K | = | +0 |
| +6.9 | Quarterfinal | 🇺🇸 USA 1 | 33 | 5♣ | ♣J | -1 | +10 |
| +6.9 | Quarterfinal | 🇺🇸 USA 1 | 74 | 5♣x | ♠4 | -1 | +8 |
| +6.7 | Quarterfinal | 🇺🇸 USA 1 | 31 | 3NT | ♥5 | -1 | +6 |
| +6.7 | Quarterfinal | 🇺🇸 USA 1 | 73 | 2♦x | ♥K | -3 | +9 |
| +6.4 | Quarterfinal | 🇺🇸 USA 1 | 30 | 3NT | ♠9 | -2 | +6 |
| +6.1 | Quarterfinal | 🇺🇸 USA 1 | 78 | 4♠ | ♦3 | -1 | -2 |
| +5.4 | Quarterfinal | 🇺🇸 USA 1 | 58 | 3♣ | ♥8 | = | -9 |
| +5.3 | Quarterfinal | 🇺🇸 USA 1 | 87 | 3NTx | ♠7 | -1 | +8 |
| +4.9 | Quarterfinal | 🇺🇸 USA 1 | 57 | 4♥ | ♠Q | +1 | +14 |
| +4.7 | Quarterfinal | 🇺🇸 USA 1 | 3 | 4♠x | ♣A | -2 | +5 |
| +4.3 | Quarterfinal | 🇺🇸 USA 1 | 88 | 3NT | ♦Q | = | +0 |
| +3.9 | Quarterfinal | 🇺🇸 USA 1 | 19 | 4♣ | ♦A | +1 | -4 |
| +3.9 | Quarterfinal | 🇺🇸 USA 1 | 60 | 5♥x | ♠3 | = | +5 |
| +3.7 | Quarterfinal | 🇺🇸 USA 1 | 61 | 2♦ | ♠J | +1 | +10 |
| +3.6 | Quarterfinal | 🇺🇸 USA 1 | 37 | 3♠ | ♦K | = | +1 |
| +3.4 | Quarterfinal | 🇺🇸 USA 1 | 63 | 3NT | ♠3 | +2 | +1 |
| +3.3 | Quarterfinal | 🇺🇸 USA 1 | 22 | 1♠ | ♥Q | = | +5 |
| +3.0 | Quarterfinal | 🇺🇸 USA 1 | 26 | 4♠ | ♣8 | = | +3 |
| +3.0 | Quarterfinal | 🇺🇸 USA 1 | 56 | 4♥ | ♠7 | = | +0 |
| +3.0 | Quarterfinal | 🇺🇸 USA 1 | 67 | 3NT | ♣A | +1 | +0 |
| +2.9 | Quarterfinal | 🇺🇸 USA 1 | 15 | 3NT | ♦5 | = | +10 |
| +2.4 | Quarterfinal | 🇺🇸 USA 1 | 91 | 3NT | ♥K | -1 | +5 |
| +2.3 | Quarterfinal | 🇺🇸 USA 1 | 38 | 3♥ | ♠K | -1 | +6 |
| +2.3 | Quarterfinal | 🇺🇸 USA 1 | 53 | 4♥ | ♠A | = | +0 |
| +2.3 | Quarterfinal | 🇺🇸 USA 1 | 76 | 4♥ | ♦3 | -1 | -2 |
| +1.9 | Quarterfinal | 🇺🇸 USA 1 | 14 | 3♠ | ♥3 | = | +1 |
| +1.7 | Quarterfinal | 🇺🇸 USA 1 | 11 | 3♠ | ♦6 | +2 | -6 |
| +1.7 | Quarterfinal | 🇺🇸 USA 1 | 46 | 2♠ | ♦5 | -1 | +10 |
| +1.7 | Quarterfinal | 🇺🇸 USA 1 | 68 | 4♥ | ♦J | = | +10 |
| +1.3 | Quarterfinal | 🇺🇸 USA 1 | 84 | 3♦ | ♥J | = | +0 |
| +1.1 | Quarterfinal | 🇺🇸 USA 1 | 66 | 3NT | ♦2 | = | +2 |
| +1.0 | Quarterfinal | 🇺🇸 USA 1 | 7 | 1NT | ♥5 | -1 | +0 |
| +1.0 | Quarterfinal | 🇺🇸 USA 1 | 24 | 3NT | ♠Q | -3 | +6 |
| +1.0 | Quarterfinal | 🇺🇸 USA 1 | 71 | 3♣ | ♥K | = | +1 |
| +0.9 | Quarterfinal | 🇺🇸 USA 1 | 6 | 4♥ | ♦7 | -1 | +12 |
| +0.9 | Quarterfinal | 🇺🇸 USA 1 | 69 | 4♠ | ♥A | +1 | +0 |
| +0.7 | Quarterfinal | 🇺🇸 USA 1 | 81 | 2♠ | ♦3 | = | +0 |
| +0.4 | Quarterfinal | 🇺🇸 USA 1 | 17 | 3NT | ♦5 | +1 | -1 |
| +0.4 | Quarterfinal | 🇺🇸 USA 1 | 40 | 3NT | ♣9 | = | +0 |
| +0.4 | Quarterfinal | 🇺🇸 USA 1 | 83 | 2♥ | ♠3 | = | +5 |
| +0.3 | Quarterfinal | 🇺🇸 USA 1 | 29 | 4♠ | ♣6 | +2 | +1 |
| +0.3 | Quarterfinal | 🇺🇸 USA 1 | 45 | 4♥ | ♣3 | +2 | -1 |
| +0.3 | Quarterfinal | 🇺🇸 USA 1 | 51 | 4NT | ♥5 | = | +1 |
| +0.3 | Quarterfinal | 🇺🇸 USA 1 | 64 | 4♠ | ♥A | = | +0 |
| +0.3 | Quarterfinal | 🇺🇸 USA 1 | 93 | 3NT | ♥10 | +1 | +4 |
| +0.1 | Quarterfinal | 🇺🇸 USA 1 | 48 | 3NT | ♠8 | +2 | +0 |
| +0.0 | Quarterfinal | 🇺🇸 USA 1 | 9 | 1NT | ♣4 | +2 | -6 |
| -0.0 | Quarterfinal | 🇺🇸 USA 1 | 50 | 1NT | ♥6 | +1 | -1 |
| -0.0 | Quarterfinal | 🇺🇸 USA 1 | 59 | 4♠ | ♥5 | +1 | +1 |
| +0.0 | Quarterfinal | 🇺🇸 USA 1 | 94 | 6♥ | ♦K | = | +11 |
| -0.1 | Quarterfinal | 🇺🇸 USA 1 | 25 | 3NT | ♣5 | +1 | +0 |
| -0.3 | Quarterfinal | 🇺🇸 USA 1 | 18 | 2♥ | ♦2 | -2 | +0 |
| -0.3 | Quarterfinal | 🇺🇸 USA 1 | 72 | 3NT | ♣Q | -3 | -6 |
| -0.4 | Quarterfinal | 🇺🇸 USA 1 | 16 | 3♠ | ♥A | +1 | +1 |
| -0.6 | Quarterfinal | 🇺🇸 USA 1 | 32 | 4♥ | ♥4 | = | +0 |
| -0.6 | Quarterfinal | 🇺🇸 USA 1 | 80 | 3♦ | ♣2 | = | +1 |
| -0.7 | Quarterfinal | 🇺🇸 USA 1 | 1 | 3♦x | ♠A | -1 | +1 |
| -0.7 | Quarterfinal | 🇺🇸 USA 1 | 28 | 3NT | ♥4 | +3 | -1 |
| -0.9 | Quarterfinal | 🇺🇸 USA 1 | 36 | 3NT | ♠2 | +1 | -13 |
| -1.1 | Quarterfinal | 🇺🇸 USA 1 | 92 | 1NT | ♥3 | = | -1 |
| -1.4 | Quarterfinal | 🇺🇸 USA 1 | 42 | 2♥ | ♠8 | +1 | -6 |
| -1.7 | Quarterfinal | 🇺🇸 USA 1 | 35 | 3NT | ♠10 | = | -2 |
| -1.7 | Quarterfinal | 🇺🇸 USA 1 | 70 | 3NT | ♠7 | -2 | -5 |
| -1.7 | Quarterfinal | 🇺🇸 USA 1 | 85 | 3NT | ♠3 | -2 | -7 |
| -1.9 | Quarterfinal | 🇺🇸 USA 1 | 43 | 2NT | ♠9 | -2 | +0 |
| -1.9 | Quarterfinal | 🇺🇸 USA 1 | 95 | 2♥ | ♣2 | +2 | +7 |
| -2.1 | Quarterfinal | 🇺🇸 USA 1 | 12 | 3NT | ♥8 | -1 | -5 |
| -2.1 | Quarterfinal | 🇺🇸 USA 1 | 21 | 2♥ | ♠J | -1 | -4 |
| -2.3 | Quarterfinal | 🇺🇸 USA 1 | 62 | 4♠ | ♣8 | -1 | -10 |
| -2.4 | Quarterfinal | 🇺🇸 USA 1 | 77 | 4♥ | ♣K | -1 | -6 |
| -2.4 | Quarterfinal | 🇺🇸 USA 1 | 90 | 3♥ | ♠A | = | +0 |
| -2.6 | Quarterfinal | 🇺🇸 USA 1 | 2 | 4♥ | ♦4 | -2 | -3 |
| -2.6 | Quarterfinal | 🇺🇸 USA 1 | 54 | 4♠ | ♥K | = | -11 |
| -2.9 | Quarterfinal | 🇺🇸 USA 1 | 75 | 5♣ | ♠Q | -1 | -10 |
| -3.0 | Quarterfinal | 🇺🇸 USA 1 | 27 | 4♠ | ♥8 | +1 | +0 |
| -3.0 | Quarterfinal | 🇺🇸 USA 1 | 34 | 2NT | ♣K | -1 | -5 |
| -3.1 | Quarterfinal | 🇺🇸 USA 1 | 79 | 3♠ | ♣9 | -2 | -2 |
| -3.4 | Quarterfinal | 🇺🇸 USA 1 | 49 | 4♠ | ♦9 | -1 | -5 |
| -3.7 | Quarterfinal | 🇺🇸 USA 1 | 23 | 3NT | ♣8 | +1 | +1 |
| -3.9 | Quarterfinal | 🇺🇸 USA 1 | 10 | 3NT | ♣J | -2 | -8 |
| -4.3 | Quarterfinal | 🇺🇸 USA 1 | 39 | 3♠ | ♣7 | -1 | +6 |
| -4.3 | Quarterfinal | 🇺🇸 USA 1 | 52 | 6♣ | ♠A | -1 | -17 |
| -4.6 | Quarterfinal | 🇺🇸 USA 1 | 86 | 1NT | ♥3 | -1 | -10 |
| -4.7 | Quarterfinal | 🇺🇸 USA 1 | 65 | 4♠ | ♥A | = | -3 |
| -4.9 | Quarterfinal | 🇺🇸 USA 1 | 44 | 3NT | ♥K | -2 | -13 |
| -5.1 | Quarterfinal | 🇺🇸 USA 1 | 5 | 3NT | ♦5 | = | +0 |
| -5.3 | Quarterfinal | 🇺🇸 USA 1 | 20 | 4♥x | ♦J | -2 | +3 |
| -5.3 | Quarterfinal | 🇺🇸 USA 1 | 47 | 3NT | ♦9 | = | -17 |
| -5.3 | Quarterfinal | 🇺🇸 USA 1 | 96 | 4♥ | ♣Q | -3 | -6 |
| -9.4 | Quarterfinal | 🇺🇸 USA 1 | 4 | 3NT | ♥5 | = | -10 |
| -11.1 | Quarterfinal | 🇺🇸 USA 1 | 13 | 4♥ | ♥2 | = | -3 |
| -17.4 | Quarterfinal | 🇺🇸 USA 1 | 82 | 7♥ | ♦J | -1 | -20 |