CLARKE David · TRINIDAD AND TOBAGO
539rank
-26.5Butler · 90 bds
-0.29per board
±4.0swing
-0.24vs par /bd · #426/672
-0.64adjusted /bd
by round
vs par split: bidding +0.50 · play -0.24
Strength of schedule: opponents averaged -0.34/bd (an easy draw) → opponent-adjusted -0.64/bd
Card play — on target: opening leads 100.0% #1 of 671 · declarer play 68.4% #536 of 671 · defence 78.6% #548 of 672
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | · | 100.0% (13) |
| Declarer play | · | 68.4% (19) |
| Defence | · | 78.6% (28) |
Opening leads by suit led: ♠ 100.0% (4) · ♥ 100.0% (3) · ♦ 100.0% (4) · ♣ 100.0% (2)
vs par by strain: a suit +0.26 (62)
vs par by level: part-score +0.17 (30) · game -0.20 (30) · slam +8.50 (2)
By role: declaring +0.24/bd (-1.85 vs par · 47) · defending -0.88/bd (+1.51 vs par · 43)
By vulnerability: vulnerable -0.46/bd (+0.52 vs par · 48) · not vulnerable -0.11/bd (-1.12 vs par · 42)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 2 | R.Mapp | F.Mayer – G.Soo | Open | 10 | -15.6 | -1.56 | +2.70 |
| Round 3 | R.Vieira | C.Liu – W.Nie | Closed | 10 | -26.3 | -2.63 | -1.10 |
| Round 5 | T.Hart | K.Takahashi – M.Fukazawa | Closed | 10 | -24.0 | -2.40 | -1.70 |
| Round 7 | R.Vieira | A.Weber – A.Delorenzo | Open | 10 | +25.8 | +2.58 | +1.50 |
| Round 8 | R.Mapp | G.Li – H.Zhao | Open | 10 | +9.4 | +0.94 | +1.40 |
| Round 9 | R.Mapp | L.Li – C.Peng | Open | 10 | +5.1 | +0.51 | -0.20 |
| Round 10 | R.Mapp | T.Binderkrantz – N.Bekkouche | Open | 10 | -4.7 | -0.47 | +0.60 |
| Round 12 | R.Mapp | H.Wang – P.Li | Open | 10 | +4.5 | +0.45 | -0.80 |
| Round 13 | R.Mapp | W.Qian – J.Tian | Open | 10 | -0.7 | -0.07 | -4.60 |
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 |
|---|---|---|---|---|---|---|---|
| +9.1 | Round 9 | HUBEI YICHANG | 28 | 4♠ | ♦A | -2 | +12 |
| +7.7 | Round 10 | FIREWORKS | 2 | 3♥ | ♦8 | = | +11 |
| +7.1 | Round 12 | HEILONGJIANG YAXUAN | 24 | 3N | ♣J | +1 | +11 |
| +6.8 | Round 13 | SHANGHAI EPC | 6 | 4♠ | ♥8 | +2 | -11 |
| +6.0 | Round 7 | ANDREW | 1 | 3♥ | ♣8 | +1 | +7 |
| +6.0 | Round 7 | ANDREW | 2 | 2♥ | ♣K | -3 | +5 |
| +5.8 | Round 7 | ANDREW | 5 | 4♠ | ♦Q | +1 | +6 |
| +5.0 | Round 9 | HUBEI YICHANG | 25 | 4♠x | ♣K | -2 | +4 |
| +4.5 | Round 8 | QING HAI | 12 | 4♠ | ♥3 | -3 | +7 |
| +4.0 | Round 5 | NANIWADA | 12 | 1N | ♦6 | -1 | +5 |
| +3.8 | Round 7 | ANDREW | 7 | 3♠ | ♥4 | = | +0 |
| +3.7 | Round 3 | CHINA LIUPANSHUI | 26 | 5♣ | ♦A | = | +7 |
| +3.3 | Round 13 | SHANGHAI EPC | 2 | 4♠ | ♣2 | = | -1 |
| +3.1 | Round 8 | QING HAI | 14 | 3♥ | ♠3 | -1 | +4 |
| +3.1 | Round 12 | HEILONGJIANG YAXUAN | 27 | 4♥ | ♦Q | +1 | -5 |
| +3.0 | Round 2 | EGAN | 13 | 2♥ | ♣2 | = | -1 |
| +2.9 | Round 5 | NANIWADA | 17 | 2♠ | ♣3 | = | +6 |
| +2.6 | Round 5 | NANIWADA | 14 | 2♠ | ♥5 | +2 | +2 |
| +2.6 | Round 8 | QING HAI | 20 | 4♠ | ♥K | = | +0 |
| +2.5 | Round 10 | FIREWORKS | 10 | 2♦x | ♠J | -1 | +2 |
| +2.5 | Round 12 | HEILONGJIANG YAXUAN | 26 | 3♣ | ♦4 | = | +6 |
| +2.4 | Round 8 | QING HAI | 11 | 4♥x | ♦K | -1 | +5 |
| +2.4 | Round 8 | QING HAI | 19 | 2♠ | ♥K | = | +5 |
| +2.3 | Round 10 | FIREWORKS | 8 | 3♠ | ♣J | = | +6 |
| +2.2 | Round 3 | CHINA LIUPANSHUI | 29 | 3N | ♠6 | +2 | +0 |
| +2.1 | Round 2 | EGAN | 16 | 1N | ♣10 | +1 | +0 |
| +2.1 | Round 9 | HUBEI YICHANG | 23 | 1N | ♥6 | +3 | +2 |
| +1.9 | Round 9 | HUBEI YICHANG | 24 | 4♥ | ♦5 | +1 | -5 |
| +1.9 | Round 9 | HUBEI YICHANG | 29 | 4♠ | ♥K | -2 | +3 |
| +1.8 | Round 13 | SHANGHAI EPC | 3 | 3N | ♥7 | +3 | +1 |
| +1.6 | Round 2 | EGAN | 18 | 4♠ | ♦7 | -1 | +4 |
| +1.6 | Round 7 | ANDREW | 8 | 4♥x | ♦5 | -1 | -5 |
| +1.3 | Round 12 | HEILONGJIANG YAXUAN | 30 | 4♥ | ♦K | -1 | +5 |
| +1.2 | Round 10 | FIREWORKS | 5 | 5♠ | ♥7 | = | +11 |
| +1.1 | Round 3 | CHINA LIUPANSHUI | 24 | 2♦ | ♥J | = | +2 |
| +1.1 | Round 7 | ANDREW | 3 | 2♥ | ♦2 | +1 | -8 |
| +1.1 | Round 8 | QING HAI | 16 | 2♠ | ♥A | +1 | +0 |
| +1.0 | Round 13 | SHANGHAI EPC | 8 | 3N | ♦Q | +2 | -14 |
| +0.9 | Round 7 | ANDREW | 6 | 4♥ | ♣J | +1 | +0 |
| +0.9 | Round 10 | FIREWORKS | 1 | 2N | ♦K | -1 | +4 |
| +0.9 | Round 13 | SHANGHAI EPC | 5 | 3N | ♠7 | +2 | -12 |
| +0.7 | Round 7 | ANDREW | 10 | 2♥ | ♣Q | +1 | +0 |
| +0.3 | Round 3 | CHINA LIUPANSHUI | 21 | 2N | ♣9 | = | +1 |
| +0.1 | Round 7 | ANDREW | 9 | 4♥ | ♦2 | +1 | +11 |
| -0.0 | Round 12 | HEILONGJIANG YAXUAN | 21 | 4♦ | ♣3 | = | -1 |
| -0.0 | Round 13 | SHANGHAI EPC | 9 | 4♠ | ♥A | +1 | +0 |
| -0.2 | Round 2 | EGAN | 20 | 3N | ♥8 | +3 | +13 |
| -0.2 | Round 7 | ANDREW | 4 | 4♥ | ♠4 | = | -1 |
| -0.2 | Round 10 | FIREWORKS | 7 | 1N | ♦3 | = | -9 |
| -0.4 | Round 10 | FIREWORKS | 3 | 1N | ♠A | -3 | +0 |
| -0.5 | Round 12 | HEILONGJIANG YAXUAN | 23 | 3N | ♠A | -1 | -6 |
| -0.6 | Round 8 | QING HAI | 17 | 3N | ♣10 | = | +6 |
| -0.7 | Round 5 | NANIWADA | 16 | 2N | ♥2 | +1 | +0 |
| -0.8 | Round 12 | HEILONGJIANG YAXUAN | 25 | 3N | ♥4 | +2 | -6 |
| -0.9 | Round 8 | QING HAI | 13 | 5♠ | ♠2 | +1 | -7 |
| -1.2 | Round 13 | SHANGHAI EPC | 1 | 4♠ | ♦7 | = | +0 |
| -1.3 | Round 5 | NANIWADA | 11 | 2♠ | ♦A | = | -5 |
| -1.3 | Round 13 | SHANGHAI EPC | 7 | 4♥ | ♠9 | +1 | +0 |
| -1.5 | Round 8 | QING HAI | 18 | 2♠ | ♦Q | = | +0 |
| -1.5 | Round 12 | HEILONGJIANG YAXUAN | 29 | 3♠ | ♥Q | -1 | +0 |
| -1.7 | Round 2 | EGAN | 15 | 4♥ | ♠9 | +1 | +0 |
| -1.7 | Round 3 | CHINA LIUPANSHUI | 22 | 3N | ♠2 | +2 | +4 |
| -1.9 | Round 2 | EGAN | 11 | 1N | ♥4 | +1 | +0 |
| -2.4 | Round 5 | NANIWADA | 18 | 3♠ | ♣K | = | +0 |
| -2.4 | Round 9 | HUBEI YICHANG | 30 | 3♠ | ♠J | +1 | -1 |
| -2.5 | Round 9 | HUBEI YICHANG | 22 | 2♠ | ♦6 | +2 | -6 |
| -2.6 | Round 9 | HUBEI YICHANG | 27 | 3♥ | ♣Q | = | +0 |
| -3.1 | Round 9 | HUBEI YICHANG | 26 | 4♠ | ♥6 | -1 | -6 |
| -3.1 | Round 12 | HEILONGJIANG YAXUAN | 28 | 2♠ | ♠5 | +1 | -7 |
| -3.2 | Round 5 | NANIWADA | 19 | 3♥ | ♦5 | +1 | -2 |
| -3.3 | Round 2 | EGAN | 12 | 3♠ | ♣7 | -2 | -2 |
| -3.4 | Round 2 | EGAN | 19 | 3N | ♠6 | -1 | -5 |
| -3.6 | Round 12 | HEILONGJIANG YAXUAN | 22 | 3N | ♥K | -1 | -5 |
| -3.6 | Round 13 | SHANGHAI EPC | 4 | 3N | ♥2 | +1 | +1 |
| -3.7 | Round 8 | QING HAI | 15 | 2♠ | ♥3 | -1 | -6 |
| -3.8 | Round 10 | FIREWORKS | 4 | 2♠ | ♥K | = | -1 |
| -3.9 | Round 3 | CHINA LIUPANSHUI | 30 | 3N | ♥9 | +1 | +5 |
| -4.3 | Round 9 | HUBEI YICHANG | 21 | 3N | ♣6 | +1 | -5 |
| -4.7 | Round 2 | EGAN | 17 | 5♣x | ♦7 | -1 | +3 |
| -5.2 | Round 10 | FIREWORKS | 9 | 4♥ | ♠2 | = | -8 |
| -6.3 | Round 3 | CHINA LIUPANSHUI | 28 | 3N | ♠4 | +1 | -5 |
| -6.4 | Round 5 | NANIWADA | 15 | 6♦ | ♣6 | = | +2 |
| -6.5 | Round 3 | CHINA LIUPANSHUI | 25 | 1N | ♥10 | -2 | -7 |
| -6.5 | Round 3 | CHINA LIUPANSHUI | 27 | 3N | ♠4 | = | -7 |
| -7.1 | Round 2 | EGAN | 14 | 6♦ | ♦10 | +1 | +15 |
| -8.1 | Round 5 | NANIWADA | 13 | 5♣x | ♥3 | -1 | -12 |
| -8.4 | Round 13 | SHANGHAI EPC | 10 | 3N | ♠2 | = | -10 |
| -8.7 | Round 3 | CHINA LIUPANSHUI | 23 | 3♣ | ♥2 | +2 | -11 |
| -9.7 | Round 10 | FIREWORKS | 6 | 4♠ | ♣A | -1 | -10 |
| -11.4 | Round 5 | NANIWADA | 20 | 5♠ | ♣A | -1 | -13 |