🇨🇳 ZHENG Tinghao · CHINA
29rank
+42.8Butler · 96 bds
+0.45per board
±4.7swing
+0.69vs par /bd · #18/105
+0.26adjusted /bd
by round
vs par split: bidding -0.04 · play +0.73
Strength of schedule: opponents averaged -0.19/bd (an easy draw) → opponent-adjusted +0.26/bd
Card play — on target: opening leads 72.0% #94 of 105 · declarer play 70.4% #67 of 105 · defence 89.4% #10 of 105
Bidding activity — not a pass: 44.7% #40 of 105 (119/266)
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 37.5% (8) | 88.2% (17) |
| Declarer play | 80.0% (10) | 64.7% (17) |
| Defence | 84.6% (13) | 91.2% (34) |
Opening leads by suit led: ♠ 100.0% (4) · ♥ 70.0% (10) · ♦ 50.0% (4) · ♣ 71.4% (7)
vs par by strain: NT +0.56 (27) · a suit +0.74 (69)
vs par by level: part-score +0.81 (37) · game +0.36 (52) · slam +2.43 (7)
By role: declaring +1.29/bd (-0.51 vs par · 49) · defending -0.43/bd (+1.94 vs par · 47)
By vulnerability: vulnerable +0.73/bd (+1.12 vs par · 48) · not vulnerable +0.16/bd (+0.25 vs par · 48)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 3 | J.Ma | B.Zhang – K.Ge | Open | 8 | -8.8 | -1.10 | -0.75 |
| Round 4 | J.Ma | A.Hariharan – A.Le | Closed | 8 | +10.7 | +1.34 | +0.50 |
| Round 5 | J.Ma | P.Jindakul – R.Kongsattra | Open | 8 | -3.7 | -0.46 | +0.25 |
| Round 9 | J.Ma | S.Zaidenberg Gatt – Y.Shor | Open | 8 | +1.1 | +0.14 | +1.62 |
| Round 10 | J.Ma | L.Hakvoort – P.Ter Maat | Closed | 8 | +5.6 | +0.70 | +0.12 |
| Round 11 | J.Ma | P.Hammelev – M.Larsen | Closed | 8 | -20.5 | -2.56 | -2.12 |
| Round 13 | J.Ma | I.Chen – X.Lin | Open | 8 | +0.3 | +0.04 | +2.88 |
| Round 14 | J.Ma | N.Matsuda – Y.Mashino | Open | 8 | +4.6 | +0.57 | -1.12 |
| Round 15 | J.Ma | C.Bens – M.Roches | Open | 8 | +31.7 | +3.96 | +6.00 |
| Round 17 | J.Ma | J.Fegarty – T.Gardner | Closed | 8 | +1.3 | +0.16 | -0.62 |
| Round 18 | J.Ma | B.Alberti Carcabelos – T.Pejacsevich | Open | 8 | +17.3 | +2.16 | +1.25 |
| Round 19 | J.Ma | J.Gusson – K.Allas | Closed | 8 | +3.2 | +0.40 | +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 |
|---|---|---|---|---|---|---|---|
| +12.9 | Round 15 | 🇫🇷 FRANCE | 22 | 6NT | ♠T | = | +13 |
| +10.9 | Round 4 | 🇦🇺 AUSTRALIA | 27 | 2♠x | ♦K | = | +13 |
| +10.7 | Round 4 | 🇦🇺 AUSTRALIA | 29 | 4♥x | ♠A | -4 | +10 |
| +10.7 | Round 10 | 🇳🇱 NETHERLANDS | 10 | 4♠ | ♣K | = | +15 |
| +9.3 | Round 18 | 🇺🇾 URUGUAY | 10 | 3NT | ♥7 | -2 | +17 |
| +8.8 | Round 15 | 🇫🇷 FRANCE | 20 | 5♣x | ♥A | -1 | +13 |
| +7.5 | Round 13 | 🇹🇼 CHINESE TAIPEI | 4 | 1NT | ♦2 | -2 | +8 |
| +7.1 | Round 10 | 🇳🇱 NETHERLANDS | 13 | 6♠ | ♦J | +1 | -13 |
| +7.1 | Round 15 | 🇫🇷 FRANCE | 17 | 3NT | ♠2 | -1 | +10 |
| +5.6 | Round 15 | 🇫🇷 FRANCE | 18 | 1NT | ♣J | +1 | +6 |
| +5.2 | Round 9 | 🇮🇱 ISRAEL | 4 | 4♥ | ♦Q | -3 | +10 |
| +5.2 | Round 17 | 🏴 ENGLAND | 2 | 3NT | ♥J | = | +7 |
| +5.2 | Round 18 | 🇺🇾 URUGUAY | 12 | 3NT | ♦7 | +1 | +1 |
| +5.1 | Round 9 | 🇮🇱 ISRAEL | 1 | 4♠ | ♠2 | -1 | +10 |
| +5.0 | Round 19 | 🇪🇪 ESTONIA | 21 | 2♠ | ♥5 | +1 | +1 |
| +4.9 | Round 3 | 🇺🇸 USA2 | 18 | 3♦ | ♥K | +1 | +6 |
| +4.9 | Round 14 | 🇯🇵 JAPAN | 14 | 4♥ | ♦7 | +1 | +0 |
| +4.8 | Round 19 | 🇪🇪 ESTONIA | 19 | 6♥ | ♣Q | -3 | +17 |
| +4.6 | Round 14 | 🇯🇵 JAPAN | 11 | 4♠ | ♣3 | +1 | +4 |
| +4.6 | Round 15 | 🇫🇷 FRANCE | 23 | 2♠ | ♦2 | = | +12 |
| +4.0 | Round 17 | 🏴 ENGLAND | 5 | 3NT | ♣K | +1 | -1 |
| +3.5 | Round 18 | 🇺🇾 URUGUAY | 14 | 3♠ | ♥4 | -3 | +2 |
| +3.3 | Round 4 | 🇦🇺 AUSTRALIA | 26 | 2♠ | ♦3 | -3 | -8 |
| +2.9 | Round 5 | 🇹🇭 THAILAND | 4 | 3♦ | ♣A | +1 | +0 |
| +2.8 | Round 18 | 🇺🇾 URUGUAY | 15 | 3NT | ♦6 | +2 | +0 |
| +2.8 | Round 19 | 🇪🇪 ESTONIA | 22 | 4♥ | ♠J | -1 | +6 |
| +2.8 | Round 19 | 🇪🇪 ESTONIA | 23 | 4♠ | ♥K | +2 | -12 |
| +2.7 | Round 11 | 🇩🇰 DENMARK | 22 | 5♠ | ♣A | = | +0 |
| +2.6 | Round 13 | 🇹🇼 CHINESE TAIPEI | 3 | 2♠ | ♥K | -1 | -2 |
| +2.4 | Round 13 | 🇹🇼 CHINESE TAIPEI | 6 | 2♥ | ♦K | +1 | +6 |
| +2.1 | Round 5 | 🇹🇭 THAILAND | 3 | 4♠ | ♠2 | +1 | +1 |
| +2.1 | Round 13 | 🇹🇼 CHINESE TAIPEI | 5 | 3NT | ♠8 | -1 | +2 |
| +2.0 | Round 17 | 🏴 ENGLAND | 4 | 2♠ | ♥3 | -1 | +6 |
| +1.8 | Round 4 | 🇦🇺 AUSTRALIA | 30 | 2♠ | ♦5 | +2 | +2 |
| +1.6 | Round 9 | 🇮🇱 ISRAEL | 8 | 4♠ | ♥K | -1 | +5 |
| +1.5 | Round 5 | 🇹🇭 THAILAND | 8 | 2♥ | ♠K | = | +0 |
| +1.5 | Round 9 | 🇮🇱 ISRAEL | 7 | 2♠ | ♣A | = | +6 |
| +1.4 | Round 14 | 🇯🇵 JAPAN | 13 | 4♠ | ♣T | +1 | +0 |
| +1.2 | Round 5 | 🇹🇭 THAILAND | 5 | 3♠ | ♥A | -1 | -6 |
| +1.2 | Round 10 | 🇳🇱 NETHERLANDS | 14 | 2♥ | ♦K | = | -1 |
| +1.2 | Round 14 | 🇯🇵 JAPAN | 15 | 3♠ | ♥2 | = | +0 |
| +1.1 | Round 4 | 🇦🇺 AUSTRALIA | 32 | 6♥ | ♦3 | = | -11 |
| +1.1 | Round 5 | 🇹🇭 THAILAND | 2 | 5♣ | ♥J | -1 | +5 |
| +0.9 | Round 19 | 🇪🇪 ESTONIA | 17 | 4♠ | ♦Q | +1 | +0 |
| +0.6 | Round 3 | 🇺🇸 USA2 | 21 | 1NT | ♥J | +1 | +0 |
| +0.4 | Round 3 | 🇺🇸 USA2 | 19 | 2♠ | ♦J | = | +0 |
| +0.3 | Round 14 | 🇯🇵 JAPAN | 12 | 3NT | ♣5 | +2 | +0 |
| +0.3 | Round 17 | 🏴 ENGLAND | 1 | 4♠ | ♥Q | +2 | -11 |
| +0.2 | Round 11 | 🇩🇰 DENMARK | 20 | 1NT | ♥Q | = | -1 |
| -0.0 | Round 13 | 🇹🇼 CHINESE TAIPEI | 8 | 3NT | ♥7 | +1 | -1 |
| -0.1 | Round 5 | 🇹🇭 THAILAND | 7 | 3NT | ♥4 | +1 | +0 |
| -0.1 | Round 14 | 🇯🇵 JAPAN | 9 | 2♦ | ♦A | -1 | -2 |
| -0.1 | Round 15 | 🇫🇷 FRANCE | 19 | 4♠ | ♥K | = | +1 |
| -0.2 | Round 3 | 🇺🇸 USA2 | 20 | 3NT | ♦4 | +1 | -1 |
| -0.2 | Round 9 | 🇮🇱 ISRAEL | 3 | 3♠ | ♣K | -1 | +1 |
| -0.4 | Round 10 | 🇳🇱 NETHERLANDS | 15 | 2♦ | ♣5 | -2 | +0 |
| -0.4 | Round 18 | 🇺🇾 URUGUAY | 16 | 2♦ | ♥2 | +1 | +0 |
| -0.5 | Round 18 | 🇺🇾 URUGUAY | 11 | 4♠ | ♠5 | +1 | +0 |
| -0.6 | Round 11 | 🇩🇰 DENMARK | 19 | 3NT | ♥2 | = | +0 |
| -0.7 | Round 3 | 🇺🇸 USA2 | 22 | 3NT | ♥7 | = | +0 |
| -0.7 | Round 17 | 🏴 ENGLAND | 8 | 2♥ | ♦3 | -1 | -2 |
| -0.7 | Round 18 | 🇺🇾 URUGUAY | 9 | 4♥ | ♣T | +2 | -11 |
| -0.9 | Round 9 | 🇮🇱 ISRAEL | 5 | 2♦ | ♦K | -1 | -1 |
| -1.3 | Round 17 | 🏴 ENGLAND | 7 | 3♠ | ♣4 | +1 | -1 |
| -1.4 | Round 14 | 🇯🇵 JAPAN | 16 | 1NT | ♥Q | +3 | -10 |
| -1.5 | Round 4 | 🇦🇺 AUSTRALIA | 25 | 2♠ | ♣3 | +2 | -6 |
| -1.5 | Round 10 | 🇳🇱 NETHERLANDS | 11 | 3NT | ♥9 | +1 | +1 |
| -1.7 | Round 13 | 🇹🇼 CHINESE TAIPEI | 1 | 2♠x | ♣9 | -3 | +10 |
| -1.7 | Round 19 | 🇪🇪 ESTONIA | 24 | 4♦ | ♥Q | = | +0 |
| -1.8 | Round 13 | 🇹🇼 CHINESE TAIPEI | 2 | 2♣ | ♣A | +1 | +0 |
| -1.9 | Round 3 | 🇺🇸 USA2 | 23 | 4♥ | ♣6 | = | +1 |
| -1.9 | Round 15 | 🇫🇷 FRANCE | 24 | 4♥ | ♠6 | = | +0 |
| -1.9 | Round 18 | 🇺🇾 URUGUAY | 13 | 4♥ | ♦2 | = | +1 |
| -2.2 | Round 10 | 🇳🇱 NETHERLANDS | 16 | 5♣ | ♥T | -2 | +5 |
| -2.7 | Round 11 | 🇩🇰 DENMARK | 21 | 3NT | ♦9 | -1 | -5 |
| -2.7 | Round 17 | 🏴 ENGLAND | 6 | 4♥ | ♠K | = | +0 |
| -2.9 | Round 11 | 🇩🇰 DENMARK | 17 | 2♠ | ♠2 | +2 | -1 |
| -2.9 | Round 19 | 🇪🇪 ESTONIA | 20 | 4♠ | ♥2 | = | +1 |
| -3.5 | Round 5 | 🇹🇭 THAILAND | 1 | 3♣ | ♠6 | -1 | +2 |
| -3.8 | Round 9 | 🇮🇱 ISRAEL | 2 | 5♣ | ♥9 | -2 | -6 |
| -3.9 | Round 11 | 🇩🇰 DENMARK | 24 | 5♦ | ♠A | -1 | -10 |
| -4.2 | Round 11 | 🇩🇰 DENMARK | 23 | 3NT | ♥5 | +1 | +0 |
| -4.4 | Round 3 | 🇺🇸 USA2 | 17 | 5♥ | ♥4 | -2 | -6 |
| -4.6 | Round 10 | 🇳🇱 NETHERLANDS | 9 | 6♠ | ♣A | = | +0 |
| -4.7 | Round 10 | 🇳🇱 NETHERLANDS | 12 | 4♠ | ♣8 | -1 | -6 |
| -5.3 | Round 15 | 🇫🇷 FRANCE | 21 | 1NT | ♦7 | +1 | -7 |
| -5.5 | Round 17 | 🏴 ENGLAND | 3 | 4♦ | ♣6 | -2 | -3 |
| -6.3 | Round 14 | 🇯🇵 JAPAN | 10 | 4♥ | ♠J | = | -1 |
| -7.4 | Round 4 | 🇦🇺 AUSTRALIA | 28 | 6♣ | ♠J | +1 | +11 |
| -7.4 | Round 9 | 🇮🇱 ISRAEL | 6 | 4♠ | ♥T | -5 | -12 |
| -7.5 | Round 3 | 🇺🇸 USA2 | 24 | 3NT | ♥J | = | -6 |
| -8.2 | Round 4 | 🇦🇺 AUSTRALIA | 31 | 3NT | ♦8 | = | -7 |
| -8.5 | Round 19 | 🇪🇪 ESTONIA | 18 | 3NT | ♣T | = | -11 |
| -8.9 | Round 5 | 🇹🇭 THAILAND | 6 | 3NT | ♥2 | = | +0 |
| -9.1 | Round 11 | 🇩🇰 DENMARK | 18 | 5♦ | ♥T | = | +0 |
| -10.8 | Round 13 | 🇹🇼 CHINESE TAIPEI | 7 | 6♠ | ♣3 | = | +0 |