🇺🇸 CHEN Andrew · USA1
5rank
+126.9Butler · 104 bds
+1.22per board
±5.1swing
+0.49vs par /bd · #30/105
+1.41adjusted /bd
by round
vs par split: bidding -0.19 · play +0.68
Strength of schedule: opponents averaged +0.19/bd (a tough draw) → opponent-adjusted +1.41/bd
Card play — on target: opening leads 82.1% #57 of 105 · declarer play 75.0% #34 of 105 · defence 90.0% #9 of 105
Bidding activity — not a pass: 44.9% #38 of 105 (124/276)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 90.0% (10) | 77.8% (18) |
| Declarer play | 83.3% (6) | 72.2% (18) |
| Defence | 93.3% (15) | 88.6% (35) |
Opening leads by suit led: ♠ 50.0% (2) · ♥ 77.8% (9) · ♦ 80.0% (10) · ♣ 100.0% (7)
vs par by strain: NT +1.22 (23) · a suit +0.28 (81)
vs par by level: part-score -0.26 (38) · game +1.23 (60) · slam -2.17 (6)
By role: declaring +2.33/bd (-0.56 vs par · 54) · defending +0.02/bd (+1.62 vs par · 50)
By vulnerability: vulnerable +1.41/bd (-0.23 vs par · 52) · not vulnerable +1.03/bd (+1.21 vs par · 52)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | J.Xiao | J.Lee – K.Lee | Open | 8 | +26.3 | +3.29 | +0.62 |
| Round 2 | J.Xiao | J.Narang – A.Mehta | Open | 8 | -19.9 | -2.49 | -3.75 |
| Round 3 | J.Xiao | Y.Liu – T.Blomsteel | Open | 8 | +12.9 | +1.61 | +1.50 |
| Round 5 | J.Xiao | M.Briedis – S.Litvak | Open | 8 | +11.4 | +1.43 | +2.50 |
| Round 6 | J.Xiao | J.Michalski – F.Stezala | Open | 8 | -6.5 | -0.81 | -1.38 |
| Round 8 | J.Xiao | C.Lejosne – B.Legras | Open | 8 | +16.9 | +2.11 | -1.38 |
| Round 9 | J.Xiao | O.Deng – Y.Cai | Open | 8 | -0.5 | -0.06 | -1.38 |
| Round 10 | J.Xiao | M.Moe – S.Draege | Open | 8 | +27.3 | +3.41 | +3.00 |
| Round 13 | J.Xiao | Y.Liu – P.Wu | Open | 8 | +3.3 | +0.41 | +1.62 |
| Round 14 | J.Xiao | I.Binderkrantz – E.Knie-Andersen | Open | 8 | +24.9 | +3.11 | -1.75 |
| Round 15 | J.Xiao | Y.Ji – X.Wu | Open | 8 | +3.8 | +0.47 | +1.75 |
| Round 16 | J.Xiao | Y.Hiba – R.Khutorsky | Open | 8 | +0.2 | +0.03 | +1.38 |
| Round 17 | J.Xiao | E.Kapidaki – I.Kapidakis | Open | 8 | +26.8 | +3.35 | +3.62 |
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 |
|---|---|---|---|---|---|---|---|
| +13.0 | Round 5 | 🇱🇻 LATVIA | 5 | 4♥x | ♠7 | = | +10 |
| +11.3 | Round 9 | 🇭🇰 HONG KONG CHINA | 8 | 2♣x | ♠2 | -4 | +12 |
| +10.8 | Round 3 | 🇳🇱 NETHERLANDS | 23 | 5♦ | ♣A | -1 | +11 |
| +10.4 | Round 3 | 🇳🇱 NETHERLANDS | 18 | 5♦ | ♠5 | = | +11 |
| +9.8 | Round 15 | 🇨🇳 CHINA | 32 | 3NT | ♥7 | +1 | +10 |
| +9.6 | Round 10 | 🇳🇴 NORWAY | 10 | 4♠ | ♣K | = | +15 |
| +9.4 | Round 1 | 🇺🇸 USA2 | 5 | 5♠ | ♦A | -1 | -9 |
| +9.3 | Round 14 | 🇩🇰 DENMARK | 21 | 4♥ | ♥T | -1 | +10 |
| +9.2 | Round 8 | 🇫🇷 FRANCE | 28 | 6NT | ♦J | = | +0 |
| +8.5 | Round 17 | 🇬🇷 GREECE | 14 | 5♣ | ♠5 | = | +11 |
| +8.2 | Round 10 | 🇳🇴 NORWAY | 11 | 6♣ | ♦6 | -1 | +11 |
| +7.9 | Round 13 | 🇹🇼 CHINESE TAIPEI | 10 | 4♥ | ♠J | = | +1 |
| +7.6 | Round 1 | 🇺🇸 USA2 | 3 | 3♥ | ♣J | -2 | +6 |
| +7.6 | Round 16 | 🇮🇱 ISRAEL | 7 | 4♠ | ♦6 | = | +10 |
| +7.5 | Round 15 | 🇨🇳 CHINA | 25 | 3NT | ♠5 | = | +10 |
| +7.4 | Round 10 | 🇳🇴 NORWAY | 12 | 4♠ | ♥A | = | +6 |
| +6.9 | Round 14 | 🇩🇰 DENMARK | 17 | 3NT | ♠4 | +1 | +1 |
| +6.5 | Round 15 | 🇨🇳 CHINA | 30 | 4♠ | ♥7 | -1 | +11 |
| +6.3 | Round 8 | 🇫🇷 FRANCE | 29 | 4♠ | ♣9 | +1 | +0 |
| +5.9 | Round 1 | 🇺🇸 USA2 | 1 | 5♣ | ♠K | -1 | +10 |
| +5.9 | Round 10 | 🇳🇴 NORWAY | 13 | 6♠ | ♣4 | +1 | -13 |
| +5.9 | Round 17 | 🇬🇷 GREECE | 11 | 3♣ | ♦5 | +2 | +7 |
| +5.3 | Round 17 | 🇬🇷 GREECE | 10 | 4♠ | ♥K | +1 | -12 |
| +5.1 | Round 17 | 🇬🇷 GREECE | 12 | 2♠ | ♣A | = | +10 |
| +5.0 | Round 16 | 🇮🇱 ISRAEL | 8 | 3NT | ♥K | -2 | +6 |
| +4.5 | Round 5 | 🇱🇻 LATVIA | 1 | 3♣ | ♣3 | -5 | +8 |
| +4.5 | Round 9 | 🇭🇰 HONG KONG CHINA | 7 | 2♦ | ♥7 | +2 | +1 |
| +3.8 | Round 8 | 🇫🇷 FRANCE | 25 | 5♥ | ♦K | = | +4 |
| +3.6 | Round 14 | 🇩🇰 DENMARK | 20 | 4♥ | ♦Q | -3 | -7 |
| +3.5 | Round 14 | 🇩🇰 DENMARK | 24 | 3NT | ♦6 | = | -1 |
| +3.4 | Round 6 | 🇵🇱 POLAND | 15 | 4♠ | ♣2 | = | +0 |
| +3.1 | Round 1 | 🇺🇸 USA2 | 6 | 1NT | ♥3 | -1 | +4 |
| +3.1 | Round 8 | 🇫🇷 FRANCE | 31 | 4♠ | ♦6 | = | +0 |
| +3.1 | Round 10 | 🇳🇴 NORWAY | 14 | 2♥ | ♦K | = | -1 |
| +2.9 | Round 3 | 🇳🇱 NETHERLANDS | 24 | 4♠ | ♥2 | -1 | +5 |
| +2.5 | Round 8 | 🇫🇷 FRANCE | 32 | 4♥ | ♠K | +1 | -10 |
| +2.5 | Round 13 | 🇹🇼 CHINESE TAIPEI | 15 | 2♠ | ♥5 | +2 | +1 |
| +2.5 | Round 16 | 🇮🇱 ISRAEL | 1 | 4♠ | ♦7 | +2 | +11 |
| +2.4 | Round 8 | 🇫🇷 FRANCE | 30 | 3NT | ♦5 | = | +2 |
| +2.3 | Round 6 | 🇵🇱 POLAND | 16 | 2♦ | ♠7 | +1 | +0 |
| +2.3 | Round 14 | 🇩🇰 DENMARK | 23 | 3♦ | ♠A | +1 | -10 |
| +2.3 | Round 17 | 🇬🇷 GREECE | 13 | 4♥ | ♠2 | = | -1 |
| +2.2 | Round 17 | 🇬🇷 GREECE | 9 | 4♥ | ♥5 | = | +11 |
| +2.1 | Round 1 | 🇺🇸 USA2 | 8 | 3♥ | ♠9 | +1 | -6 |
| +1.9 | Round 5 | 🇱🇻 LATVIA | 4 | 4♦ | ♥8 | = | +0 |
| +1.9 | Round 5 | 🇱🇻 LATVIA | 8 | 2♥ | ♠K | = | +0 |
| +1.9 | Round 13 | 🇹🇼 CHINESE TAIPEI | 9 | 1NT | ♦9 | -1 | +5 |
| +1.8 | Round 3 | 🇳🇱 NETHERLANDS | 19 | 2♠ | ♦J | = | +0 |
| +1.7 | Round 6 | 🇵🇱 POLAND | 11 | 2♥ | ♣Q | = | +0 |
| +1.6 | Round 5 | 🇱🇻 LATVIA | 3 | 4♠ | ♥3 | +1 | +1 |
| +1.6 | Round 14 | 🇩🇰 DENMARK | 19 | 4♠ | ♥A | = | -1 |
| +1.5 | Round 16 | 🇮🇱 ISRAEL | 6 | 4♥ | ♦4 | = | +0 |
| +1.1 | Round 9 | 🇭🇰 HONG KONG CHINA | 6 | 4♠ | ♣Q | -1 | +6 |
| +0.9 | Round 3 | 🇳🇱 NETHERLANDS | 17 | 2♥ | ♣8 | = | -1 |
| +0.8 | Round 10 | 🇳🇴 NORWAY | 15 | 2♦ | ♠A | -1 | +2 |
| +0.6 | Round 13 | 🇹🇼 CHINESE TAIPEI | 16 | 3♠ | ♥Q | +1 | +10 |
| +0.6 | Round 17 | 🇬🇷 GREECE | 16 | 1NT | ♠6 | = | +1 |
| +0.5 | Round 1 | 🇺🇸 USA2 | 4 | 2♠ | ♣Q | +1 | +0 |
| +0.4 | Round 2 | 🇮🇳 INDIA | 9 | 4♠ | ♦5 | = | +0 |
| +0.1 | Round 1 | 🇺🇸 USA2 | 7 | 4♠ | ♦A | = | +0 |
| +0.1 | Round 6 | 🇵🇱 POLAND | 12 | 1NT | ♥6 | = | +5 |
| +0.1 | Round 16 | 🇮🇱 ISRAEL | 2 | 2NT | ♦6 | +2 | -2 |
| +0.0 | Round 9 | 🇭🇰 HONG KONG CHINA | 4 | 4♥ | ♦Q | -1 | -6 |
| -0.1 | Round 5 | 🇱🇻 LATVIA | 7 | 4♠ | ♥4 | = | +0 |
| -0.1 | Round 13 | 🇹🇼 CHINESE TAIPEI | 13 | 4♠ | ♣T | = | +1 |
| -0.1 | Round 14 | 🇩🇰 DENMARK | 22 | 3NT | ♥7 | +2 | +0 |
| -0.4 | Round 6 | 🇵🇱 POLAND | 9 | 4♥ | ♣5 | -1 | -5 |
| -0.5 | Round 3 | 🇳🇱 NETHERLANDS | 22 | 3NT | ♣8 | = | +0 |
| -0.7 | Round 13 | 🇹🇼 CHINESE TAIPEI | 12 | 3NT | ♥3 | +2 | +0 |
| -0.8 | Round 2 | 🇮🇳 INDIA | 13 | 3♥ | ♣A | -1 | -1 |
| -0.8 | Round 6 | 🇵🇱 POLAND | 14 | 6♦ | ♠3 | +1 | +2 |
| -1.2 | Round 3 | 🇳🇱 NETHERLANDS | 20 | 3NT | ♦5 | +1 | -1 |
| -1.5 | Round 2 | 🇮🇳 INDIA | 12 | 4♥ | ♠A | -1 | -5 |
| -1.5 | Round 15 | 🇨🇳 CHINA | 26 | 2♠ | ♦Q | -1 | -5 |
| -1.8 | Round 5 | 🇱🇻 LATVIA | 2 | 4♥ | ♠K | -1 | +1 |
| -1.9 | Round 8 | 🇫🇷 FRANCE | 26 | 2♥ | ♠4 | +1 | -6 |
| -2.1 | Round 15 | 🇨🇳 CHINA | 29 | 2♠ | ♠4 | +1 | +0 |
| -2.2 | Round 2 | 🇮🇳 INDIA | 11 | 3NT | ♦K | -4 | +5 |
| -2.2 | Round 14 | 🇩🇰 DENMARK | 18 | 2♣ | ♦4 | -1 | -6 |
| -2.3 | Round 9 | 🇭🇰 HONG KONG CHINA | 1 | 4♠ | ♥4 | -1 | -10 |
| -2.4 | Round 1 | 🇺🇸 USA2 | 2 | 3♠ | ♦Q | = | +0 |
| -2.5 | Round 9 | 🇭🇰 HONG KONG CHINA | 3 | 5♣ | ♥8 | -2 | -6 |
| -3.1 | Round 2 | 🇮🇳 INDIA | 10 | 2♥ | ♥5 | +1 | -6 |
| -3.1 | Round 9 | 🇭🇰 HONG KONG CHINA | 5 | 2NT | ♦3 | = | +0 |
| -3.1 | Round 17 | 🇬🇷 GREECE | 15 | 3NT | ♦6 | = | +2 |
| -3.3 | Round 2 | 🇮🇳 INDIA | 15 | 4♠ | ♥7 | -1 | -10 |
| -3.4 | Round 6 | 🇵🇱 POLAND | 10 | 5♣ | ♥K | = | +0 |
| -3.4 | Round 13 | 🇹🇼 CHINESE TAIPEI | 11 | 4♠ | ♣3 | = | -3 |
| -3.8 | Round 10 | 🇳🇴 NORWAY | 16 | 2♣ | ♥T | -1 | +4 |
| -3.9 | Round 10 | 🇳🇴 NORWAY | 9 | 6♠ | ♣A | = | +0 |
| -3.9 | Round 16 | 🇮🇱 ISRAEL | 4 | 2♠ | ♥5 | -1 | -6 |
| -4.1 | Round 15 | 🇨🇳 CHINA | 27 | 4♥ | ♥A | = | +1 |
| -4.2 | Round 2 | 🇮🇳 INDIA | 16 | 2♥ | ♣6 | = | -6 |
| -4.3 | Round 16 | 🇮🇱 ISRAEL | 5 | 4NT | ♣K | = | +1 |
| -4.6 | Round 15 | 🇨🇳 CHINA | 28 | 5♦x | ♠Q | -1 | +0 |
| -5.2 | Round 2 | 🇮🇳 INDIA | 14 | 3NT | ♥K | -4 | -7 |
| -5.4 | Round 13 | 🇹🇼 CHINESE TAIPEI | 14 | 5♦x | ♥2 | -3 | -2 |
| -7.7 | Round 15 | 🇨🇳 CHINA | 31 | 4♠ | ♥K | = | -13 |
| -8.3 | Round 16 | 🇮🇱 ISRAEL | 3 | 4♣x | ♠K | -2 | -9 |
| -8.5 | Round 8 | 🇫🇷 FRANCE | 27 | 4♠ | ♦5 | +1 | -1 |
| -9.4 | Round 6 | 🇵🇱 POLAND | 13 | 6♥ | ♦8 | -2 | -13 |
| -9.5 | Round 9 | 🇭🇰 HONG KONG CHINA | 2 | 3♣x | ♣2 | = | -8 |
| -9.6 | Round 5 | 🇱🇻 LATVIA | 6 | 3NT | ♥5 | = | +0 |
| -12.2 | Round 3 | 🇳🇱 NETHERLANDS | 21 | 2NTx | ♦7 | +1 | -13 |