🇨🇳 LU Kai · CHINA
62rank
+1.0Butler · 80 bds
+0.01per board
±5.5swing
-0.97vs par /bd
-0.55adjusted /bd
by round
vs par split: bidding -1.32 · play +0.77
Strength of schedule: opponents averaged -0.57/bd (an easy draw) → opponent-adjusted -0.55/bd
Card play — on target: opening leads 68.4% · declarer play 82.4% · defence 94.4%
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 100.0% (1) | 66.7% (18) |
| Declarer play | 83.3% (6) | 81.8% (11) |
| Defence | 85.7% (7) | 96.6% (29) |
Opening leads by suit led: ♠ 83.3% (6) · ♥ 50.0% (2) · ♦ 66.7% (6) · ♣ 60.0% (5)
vs par by strain: NT -0.91 (23) · a suit -0.38 (50)
vs par by level: part-score -1.44 (18) · game -0.11 (45) · slam -0.90 (10)
By role: declaring -0.93/bd (-5.24 vs par · 42) · defending +1.12/bd (+3.95 vs par · 37)
By vulnerability: vulnerable -1.00/bd (-3.33 vs par · 40) · not vulnerable +1.03/bd (+1.38 vs par · 40)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 2 | J.Shen | F.Ferro – F.Montes De Oca | Open | 16 | -33.7 | -2.11 | -4.25 |
| Round 5 | J.Shen | T.Walsh – S.Huang | Open | 16 | -0.5 | -0.03 | -0.38 |
| Round 8 | J.Shen | W.Brown – K.Howard | Closed | 16 | +29.5 | +1.84 | -0.31 |
| Round 12 | J.Shen | N.Ege – L.Tofte | Closed | 16 | +16.2 | +1.01 | +0.19 |
| Round 18 | J.Shen | S.Tommasini – R.Dias | Open | 16 | -10.5 | -0.66 | -0.12 |
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 |
|---|---|---|---|---|---|---|---|
| +12.2 | Round 12 | 🇩🇰 DENMARK | 4 | 4♠x | ♥A | -3 | +5 |
| +11.7 | Round 12 | 🇩🇰 DENMARK | 2 | 6♠ | ♠3 | -2 | +13 |
| +11.6 | Round 5 | 🇨🇦 CANADA | 14 | 6NT | ♠7 | -1 | +14 |
| +11.6 | Round 8 | COSTA RICA | 7 | 3NT | ♠9 | -1 | +12 |
| +10.2 | Round 12 | 🇩🇰 DENMARK | 7 | 4♥ | ♣Q | -1 | +12 |
| +9.0 | Round 18 | 🇧🇷 BRAZIL | 11 | 5♥ | ♣7 | -2 | +14 |
| +8.5 | Round 5 | 🇨🇦 CANADA | 1 | 6♠ | ♥7 | = | +0 |
| +7.5 | Round 8 | COSTA RICA | 12 | 5♦ | ♠Q | -2 | +11 |
| +7.1 | Round 8 | COSTA RICA | 6 | 3NT | ♠5 | = | +0 |
| +7.1 | Round 18 | 🇧🇷 BRAZIL | 6 | 6♣ | ♣4 | = | -11 |
| +7.0 | Round 5 | 🇨🇦 CANADA | 12 | 3NT | ♥J | = | -2 |
| +6.7 | Round 8 | COSTA RICA | 2 | 5♥ | ♠A | -1 | +10 |
| +6.7 | Round 8 | COSTA RICA | 15 | 4♠ | ♦2 | -1 | +12 |
| +6.6 | Round 18 | 🇧🇷 BRAZIL | 2 | 4♥ | ♣4 | = | +3 |
| +6.3 | Round 8 | COSTA RICA | 8 | 3♠ | ♦A | = | +7 |
| +5.3 | Round 18 | 🇧🇷 BRAZIL | 13 | 4♥ | ♠J | -3 | -8 |
| +5.2 | Round 5 | 🇨🇦 CANADA | 8 | 3NT | ♠3 | +1 | +1 |
| +3.9 | Round 8 | COSTA RICA | 13 | 3NT | ♦3 | +1 | +0 |
| +3.8 | Round 8 | COSTA RICA | 10 | 2♠ | ♥T | = | +0 |
| +3.8 | Round 12 | 🇩🇰 DENMARK | 5 | 4♠ | ♥3 | -1 | +6 |
| +2.9 | Round 18 | 🇧🇷 BRAZIL | 15 | 3NT | ♥6 | +2 | +1 |
| +2.6 | Round 5 | 🇨🇦 CANADA | 10 | 3NT | ♥5 | +1 | +1 |
| +2.6 | Round 8 | COSTA RICA | 1 | 4♠ | ♥K | +1 | -11 |
| +2.4 | Round 18 | 🇧🇷 BRAZIL | 9 | 3NT | ♦4 | -1 | +12 |
| +1.8 | Round 8 | COSTA RICA | 16 | 3NT | ♠2 | +2 | +0 |
| +1.6 | Round 5 | 🇨🇦 CANADA | 5 | 1NT | ♦K | -2 | +3 |
| +1.5 | Round 5 | 🇨🇦 CANADA | 11 | 3♣ | ♦5 | = | +11 |
| +1.4 | Round 5 | 🇨🇦 CANADA | 9 | 5♦ | ♠J | -1 | +5 |
| +1.2 | Round 2 | 🇦🇷 ARGENTINA | 6 | 3♠ | ♥5 | +1 | -6 |
| +1.2 | Round 2 | 🇦🇷 ARGENTINA | 10 | 3NT | ♠6 | +3 | -12 |
| +0.9 | Round 2 | 🇦🇷 ARGENTINA | 14 | 3N | ♣5 | = | -1 |
| +0.6 | Round 2 | 🇦🇷 ARGENTINA | 16 | 3N | ♥A | -2 | +7 |
| +0.5 | Round 2 | 🇦🇷 ARGENTINA | 15 | 4♠ | ♠A | = | +0 |
| +0.4 | Round 12 | 🇩🇰 DENMARK | 8 | 1NT | ♠7 | +1 | +0 |
| +0.3 | Round 12 | 🇩🇰 DENMARK | 16 | 1NT | ♥J | +1 | +0 |
| +0.2 | Round 2 | 🇦🇷 ARGENTINA | 11 | 2♥ | ♣A | = | +7 |
| +0.0 | Round 2 | 🇦🇷 ARGENTINA | 5 | 3N | ♥3 | +2 | -16 |
| -0.0 | Round 12 | 🇩🇰 DENMARK | 15 | 5♠ | ♦8 | = | +0 |
| +0.0 | Round 18 | 🇧🇷 BRAZIL | 16 | 2NT | ♣9 | = | -1 |
| -0.3 | Round 12 | 🇩🇰 DENMARK | 12 | 5♣ | ♥9 | -1 | -3 |
| -0.5 | Round 2 | 🇦🇷 ARGENTINA | 8 | 2N | ♥4 | -1 | -4 |
| -0.5 | Round 12 | 🇩🇰 DENMARK | 9 | 4♥ | ♠8 | +1 | +0 |
| -0.6 | Round 5 | 🇨🇦 CANADA | 6 | 3♦ | ♣A | +1 | +0 |
| -0.9 | Round 2 | 🇦🇷 ARGENTINA | 3 | 2♠ | ♦4 | +1 | -1 |
| -1.2 | Round 12 | 🇩🇰 DENMARK | 13 | 3♠ | ♣8 | = | +0 |
| -1.4 | Round 18 | 🇧🇷 BRAZIL | 8 | 4♥ | ♠4 | = | +0 |
| -1.5 | Round 8 | COSTA RICA | 5 | Pass | -4 | ||
| -1.8 | Round 18 | 🇧🇷 BRAZIL | 4 | 3NT | ♠10 | +2 | +0 |
| -2.0 | Round 2 | 🇦🇷 ARGENTINA | 12 | 6♠ | ♥K | +1 | +11 |
| -2.1 | Round 18 | 🇧🇷 BRAZIL | 7 | 3NT | ♥9 | = | +1 |
| -2.3 | Round 5 | 🇨🇦 CANADA | 4 | 4♠ | ♣3 | +2 | -1 |
| -2.4 | Round 12 | 🇩🇰 DENMARK | 3 | 4♥ | ♦9 | = | +0 |
| -2.4 | Round 12 | 🇩🇰 DENMARK | 11 | 4♥ | ♣10 | -1 | -10 |
| -2.5 | Round 2 | 🇦🇷 ARGENTINA | 1 | 5♦x | ♥A | -1 | -6 |
| -2.7 | Round 18 | 🇧🇷 BRAZIL | 1 | 6♠ | ♦6 | -3 | +6 |
| -3.1 | Round 12 | 🇩🇰 DENMARK | 6 | 1NT | ♥K | +1 | -11 |
| -3.4 | Round 2 | 🇦🇷 ARGENTINA | 9 | 4♣ | ♦A | = | +0 |
| -3.7 | Round 12 | 🇩🇰 DENMARK | 14 | 4♠ | ♦K | +1 | +0 |
| -3.8 | Round 5 | 🇨🇦 CANADA | 2 | 5♠x | ♦J | -2 | -5 |
| -3.8 | Round 12 | 🇩🇰 DENMARK | 1 | 4♠ | ♥A | = | -3 |
| -3.8 | Round 18 | 🇧🇷 BRAZIL | 12 | 3NT | ♠6 | +1 | -1 |
| -3.9 | Round 5 | 🇨🇦 CANADA | 3 | 5♥ | ♦T | = | +0 |
| -3.9 | Round 5 | 🇨🇦 CANADA | 7 | 3NT | ♣J | -1 | -16 |
| -4.1 | Round 2 | 🇦🇷 ARGENTINA | 13 | 2♠ | ♣A | +2 | -10 |
| -4.6 | Round 8 | COSTA RICA | 11 | 6♥ | ♣8 | +1 | -11 |
| -4.8 | Round 8 | COSTA RICA | 3 | 4♥ | ♦5 | -1 | -6 |
| -5.0 | Round 12 | 🇩🇰 DENMARK | 10 | 3NT | ♠A | -1 | -6 |
| -5.1 | Round 2 | 🇦🇷 ARGENTINA | 4 | 2N | ♠4 | -2 | -7 |
| -5.1 | Round 8 | COSTA RICA | 4 | 4♥ | ♦4 | -3 | -10 |
| -5.3 | Round 5 | 🇨🇦 CANADA | 13 | 3NT | ♣5 | -2 | -8 |
| -5.4 | Round 8 | COSTA RICA | 14 | 3♦ | ♠7 | +1 | -6 |
| -5.9 | Round 18 | 🇧🇷 BRAZIL | 3 | 5♥x | ♠J | -2 | -5 |
| -6.2 | Round 2 | 🇦🇷 ARGENTINA | 7 | 6N | ♦6 | -1 | -13 |
| -6.6 | Round 18 | 🇧🇷 BRAZIL | 5 | 2♠ | ♠7 | +2 | -10 |
| -7.1 | Round 8 | COSTA RICA | 9 | 3NT | ♠2 | -3 | -9 |
| -9.1 | Round 5 | 🇨🇦 CANADA | 15 | 7♥ | ♠K | = | +0 |
| -9.4 | Round 18 | 🇧🇷 BRAZIL | 14 | 4♥ | ♦K | = | +11 |
| -10.1 | Round 18 | 🇧🇷 BRAZIL | 10 | 6♥ | ♣K | -3 | -14 |
| -11.0 | Round 5 | 🇨🇦 CANADA | 16 | 3♥x | ♥J | -3 | -9 |
| -13.6 | Round 2 | 🇦🇷 ARGENTINA | 2 | 7♠ | ♦T | -2 | -17 |