DRENKELFORD Herman · VENTIN
156rank
+39.5Butler · 100 bds
+0.40per board
±4.1swing
-0.01vs par /bd · #330/672
+0.43adjusted /bd
by round
vs par split: bidding -0.15 · play +0.31
Strength of schedule: opponents averaged +0.04/bd (an average draw) → opponent-adjusted +0.43/bd
Card play — on target: opening leads 75.0% #490 of 671 · declarer play 64.7% #586 of 671 · defence 100.0% #1 of 672
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | · | 75.0% (16) |
| Declarer play | · | 64.7% (17) |
| Defence | · | 100.0% (30) |
Opening leads by suit led: ♠ 100.0% (3) · ♥ 80.0% (5) · ♦ 50.0% (4) · ♣ 75.0% (4)
vs par by strain: a suit +0.16 (67)
vs par by level: part-score +1.46 (33) · game -1.55 (29) · slam +1.60 (5)
By role: declaring +0.20/bd (-1.94 vs par · 53) · defending +0.61/bd (+2.17 vs par · 47)
By vulnerability: vulnerable +0.68/bd (-0.69 vs par · 58) · not vulnerable -0.01/bd (+0.93 vs par · 42)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | J.Van Cleeff | X.Zhang – Z.Hu | Open | 10 | +7.3 | +0.73 | -0.90 |
| Round 2 | J.Van Cleeff | I.Brisebois – J.Smith | Closed | 10 | -1.9 | -0.19 | -4.70 |
| Round 3 | J.Van Cleeff | S.Wang – J.Shen | Closed | 10 | +22.7 | +2.27 | +3.60 |
| Round 5 | J.Van Cleeff | Y.Sun – M.Xu | Closed | 10 | -4.3 | -0.43 | -0.40 |
| Round 6 | J.Van Cleeff | S.Chen – Y.Jiang | Open | 10 | +15.1 | +1.51 | +0.50 |
| Round 8 | J.Van Cleeff | H.Lei – M.Gao | Closed | 10 | +0.6 | +0.06 | -0.50 |
| Round 11 | J.Van Cleeff | R.Klinger – W.Haughie | Closed | 10 | +2.0 | +0.20 | -0.30 |
| Round 12 | J.Van Cleeff | S.Chen – R.Wang | Closed | 10 | +12.4 | +1.24 | +0.20 |
| Round 13 | J.Van Cleeff | A.Ivanov – N.Barantiev | Open | 10 | +10.9 | +1.09 | +4.00 |
| Round 15 | J.Van Cleeff | J.Peng – J.Chen | Open | 10 | -25.3 | -2.53 | -1.60 |
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 |
|---|---|---|---|---|---|---|---|
| +9.5 | Round 1 | ANHUI | 10 | 3♥ | ♠8 | +2 | +7 |
| +8.4 | Round 13 | CHATEAU ROSSENOVO | 10 | 3N | ♥K | = | +10 |
| +8.2 | Round 3 | TIANJIN | 28 | 3N | ♦6 | -2 | +12 |
| +7.7 | Round 13 | CHATEAU ROSSENOVO | 8 | 6N | ♦Q | -2 | +17 |
| +7.1 | Round 2 | L'ECUYER | 14 | 6♦ | ♣J | +1 | -15 |
| +6.6 | Round 3 | TIANJIN | 25 | 1Nx | ♠8 | +1 | +7 |
| +6.5 | Round 3 | TIANJIN | 30 | 3N | ♦3 | -1 | +12 |
| +6.5 | Round 8 | TRIJET | 20 | 2♠ | ♦J | +2 | +10 |
| +6.5 | Round 12 | SHENZHEN QIAOYOU CLUB | 24 | 3N | ♠6 | = | +11 |
| +6.4 | Round 12 | SHENZHEN QIAOYOU CLUB | 21 | 3♠ | ♦A | +1 | +7 |
| +6.3 | Round 5 | SHANGHAI OCEAN | 13 | 3N | ♠2 | -1 | +11 |
| +5.6 | Round 15 | ZUOMEICHENG | 25 | 6♠ | ♥3 | -2 | +17 |
| +5.5 | Round 6 | SHANGHAI YOUTH 3 | 21 | 5♣x | ♣K | -2 | +2 |
| +5.1 | Round 11 | HOFFMAN | 14 | 1♣ | ♥7 | +1 | +15 |
| +4.5 | Round 13 | CHATEAU ROSSENOVO | 6 | 6♣ | ♥7 | -1 | +14 |
| +4.0 | Round 11 | HOFFMAN | 11 | 4♦ | ♦2 | = | +7 |
| +3.7 | Round 3 | TIANJIN | 26 | 5♣ | ♦K | = | +7 |
| +3.4 | Round 2 | L'ECUYER | 11 | 2N | ♠2 | +2 | +2 |
| +3.3 | Round 1 | ANHUI | 1 | 2♠ | ♦8 | -1 | +9 |
| +3.3 | Round 6 | SHANGHAI YOUTH 3 | 25 | 1♥ | ♠6 | +2 | +0 |
| +3.2 | Round 5 | SHANGHAI OCEAN | 19 | 2♥ | ♣8 | +2 | +2 |
| +3.1 | Round 1 | ANHUI | 5 | 3♠ | ♣5 | = | +0 |
| +3.1 | Round 12 | SHENZHEN QIAOYOU CLUB | 27 | 5♥ | ♦Q | = | -5 |
| +3.1 | Round 12 | SHENZHEN QIAOYOU CLUB | 30 | 4♥x | ♦A | -1 | +6 |
| +3.0 | Round 1 | ANHUI | 6 | 2N | ♠8 | -1 | +4 |
| +3.0 | Round 13 | CHATEAU ROSSENOVO | 4 | 3N | ♥2 | = | -2 |
| +2.9 | Round 11 | HOFFMAN | 15 | 4♠ | ♣A | -1 | -2 |
| +2.7 | Round 6 | SHANGHAI YOUTH 3 | 24 | 2N | ♠K | = | +0 |
| +2.6 | Round 5 | SHANGHAI OCEAN | 17 | 2♠x | ♠K | -1 | +0 |
| +2.3 | Round 1 | ANHUI | 4 | 4♠ | ♦Q | -2 | +2 |
| +2.3 | Round 3 | TIANJIN | 23 | 4♠ | ♥7 | +1 | +0 |
| +2.3 | Round 12 | SHENZHEN QIAOYOU CLUB | 26 | 4♥ | ♣4 | -1 | +6 |
| +2.2 | Round 13 | CHATEAU ROSSENOVO | 1 | 5♠ | ♥Q | = | +1 |
| +2.1 | Round 6 | SHANGHAI YOUTH 3 | 23 | 3♦ | ♣J | -2 | +2 |
| +2.1 | Round 6 | SHANGHAI YOUTH 3 | 30 | 3N | ♠2 | -2 | +6 |
| +2.1 | Round 11 | HOFFMAN | 17 | 2♦ | ♣Q | = | -1 |
| +1.7 | Round 2 | L'ECUYER | 15 | 4♥ | ♠9 | +1 | +0 |
| +1.6 | Round 2 | L'ECUYER | 13 | 2♠ | ♣2 | -1 | +6 |
| +1.6 | Round 11 | HOFFMAN | 18 | 4♣ | ♠4 | -1 | +4 |
| +1.5 | Round 8 | TRIJET | 18 | 2♠ | ♠J | = | +0 |
| +1.4 | Round 1 | ANHUI | 9 | 3N | ♥10 | +2 | +0 |
| +1.4 | Round 8 | TRIJET | 19 | 3♦ | ♥K | -1 | -2 |
| +1.3 | Round 13 | CHATEAU ROSSENOVO | 7 | 4♥ | ♣A | +1 | +0 |
| +1.2 | Round 11 | HOFFMAN | 13 | 2♥ | ♣3 | = | +1 |
| +1.1 | Round 8 | TRIJET | 14 | 2♥ | ♠3 | = | +0 |
| +1.0 | Round 15 | ZUOMEICHENG | 29 | 4♠ | ♣K | = | +0 |
| +0.9 | Round 8 | TRIJET | 13 | 4♠ | ♦7 | +2 | +7 |
| +0.8 | Round 3 | TIANJIN | 24 | 3♣ | ♥A | -2 | +1 |
| +0.6 | Round 8 | TRIJET | 17 | 3N | ♥9 | = | -6 |
| +0.5 | Round 3 | TIANJIN | 29 | 5♦ | ♥K | = | -2 |
| +0.5 | Round 5 | SHANGHAI OCEAN | 16 | 1♠ | ♦6 | +2 | +0 |
| +0.5 | Round 6 | SHANGHAI YOUTH 3 | 29 | 1N | ♣K | +1 | +0 |
| +0.3 | Round 3 | TIANJIN | 21 | 1N | ♣10 | +1 | +1 |
| +0.3 | Round 3 | TIANJIN | 22 | 3N | ♥5 | = | +5 |
| +0.3 | Round 12 | SHENZHEN QIAOYOU CLUB | 28 | 5♦x | ♠A | -2 | -4 |
| +0.2 | Round 2 | L'ECUYER | 20 | 3N | ♥2 | +3 | -13 |
| +0.2 | Round 5 | SHANGHAI OCEAN | 12 | 1N | ♥6 | +1 | +0 |
| +0.2 | Round 6 | SHANGHAI YOUTH 3 | 22 | 2♠ | ♦A | = | +5 |
| +0.2 | Round 15 | ZUOMEICHENG | 22 | 4♠ | ♠4 | +1 | +5 |
| +0.1 | Round 1 | ANHUI | 8 | 3♦ | ♦5 | = | +0 |
| +0.0 | Round 6 | SHANGHAI YOUTH 3 | 28 | 3N | ♣2 | +2 | +0 |
| +0.0 | Round 13 | CHATEAU ROSSENOVO | 9 | 4♠ | ♣6 | +1 | +0 |
| -0.2 | Round 6 | SHANGHAI YOUTH 3 | 27 | 4♥ | ♦K | -1 | -5 |
| -0.2 | Round 11 | HOFFMAN | 19 | 4♠ | ♥8 | = | +0 |
| -0.6 | Round 5 | SHANGHAI OCEAN | 20 | 4♠ | ♣A | = | +1 |
| -0.7 | Round 15 | ZUOMEICHENG | 24 | 2♥ | ♠7 | -2 | -5 |
| -0.8 | Round 2 | L'ECUYER | 17 | 4♣ | ♠J | = | -8 |
| -0.8 | Round 12 | SHENZHEN QIAOYOU CLUB | 25 | 3N | ♥2 | +2 | -6 |
| -0.9 | Round 11 | HOFFMAN | 20 | 5♥ | ♦8 | = | -13 |
| -1.1 | Round 6 | SHANGHAI YOUTH 3 | 26 | 4♠ | ♥Q | = | -5 |
| -1.1 | Round 8 | TRIJET | 16 | 2♠ | ♥K | +1 | +0 |
| -1.6 | Round 2 | L'ECUYER | 18 | 4♠ | ♥A | -1 | -4 |
| -1.6 | Round 5 | SHANGHAI OCEAN | 14 | 3♦ | ♣5 | +1 | -1 |
| -1.6 | Round 12 | SHENZHEN QIAOYOU CLUB | 29 | 2♥ | ♠A | = | +0 |
| -1.8 | Round 13 | CHATEAU ROSSENOVO | 3 | 3N | ♣7 | +3 | -1 |
| -1.9 | Round 8 | TRIJET | 12 | 3N | ♦6 | -1 | -5 |
| -1.9 | Round 8 | TRIJET | 15 | 2♥ | ♦8 | +1 | +0 |
| -2.1 | Round 15 | ZUOMEICHENG | 27 | 2♥ | ♠K | +1 | +0 |
| -2.3 | Round 5 | SHANGHAI OCEAN | 18 | 4♠ | ♣A | -1 | -5 |
| -2.8 | Round 2 | L'ECUYER | 12 | 2♥ | ♥8 | -1 | -5 |
| -2.9 | Round 5 | SHANGHAI OCEAN | 11 | 2♠ | ♦A | -1 | +2 |
| -3.3 | Round 12 | SHENZHEN QIAOYOU CLUB | 23 | 6♦ | ♠A | -2 | -8 |
| -3.3 | Round 13 | CHATEAU ROSSENOVO | 2 | 4♥ | ♠7 | = | +1 |
| -3.5 | Round 1 | ANHUI | 3 | 4♠ | ♣K | -3 | -11 |
| -3.6 | Round 12 | SHENZHEN QIAOYOU CLUB | 22 | 3N | ♥A | -1 | -5 |
| -3.6 | Round 15 | ZUOMEICHENG | 23 | 1N | ♥2 | = | +0 |
| -3.8 | Round 2 | L'ECUYER | 16 | 2♠ | ♥A | -2 | -3 |
| -4.4 | Round 15 | ZUOMEICHENG | 21 | 4♠ | ♣Q | -1 | -5 |
| -5.1 | Round 11 | HOFFMAN | 16 | 3N | ♥2 | +3 | -1 |
| -5.4 | Round 1 | ANHUI | 2 | 3N | ♣6 | = | -7 |
| -5.4 | Round 15 | ZUOMEICHENG | 28 | 3♠ | ♦A | -1 | -5 |
| -6.5 | Round 1 | ANHUI | 7 | 3N | ♠J | -1 | -13 |
| -6.5 | Round 3 | TIANJIN | 27 | 3N | ♥8 | = | -7 |
| -6.5 | Round 8 | TRIJET | 11 | 4♠ | ♦J | -2 | -9 |
| -6.9 | Round 2 | L'ECUYER | 19 | 3N | ♥J | = | -7 |
| -7.0 | Round 15 | ZUOMEICHENG | 30 | 3N | ♠3 | -3 | -12 |
| -8.7 | Round 11 | HOFFMAN | 12 | 4♠ | ♥3 | -2 | -13 |
| -8.9 | Round 15 | ZUOMEICHENG | 26 | 1Nx | ♣K | +1 | -11 |
| -9.7 | Round 5 | SHANGHAI OCEAN | 15 | 7N | ♣8 | -1 | -14 |
| -11.1 | Round 13 | CHATEAU ROSSENOVO | 5 | 6♦ | ♣K | = | +0 |