LIU Herstein · MARK WU
13rank
+90.4Butler · 100 bds
+0.90per board
±4.6swing
+0.70vs par /bd · #60/535
+0.77adjusted /bd
by round
vs par split: bidding +0.69 · play +0.00
Strength of schedule: opponents averaged -0.14/bd (an easy draw) → opponent-adjusted +0.77/bd
Card play — on target: opening leads 80.0% #202 of 534 · declarer play 66.7% #390 of 534 · defence 82.0% #406 of 535
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 62.5% (8) | 88.2% (17) |
| Declarer play | 60.0% (5) | 68.8% (16) |
| Defence | 75.0% (16) | 85.3% (34) |
Opening leads by suit led: ♠ 87.5% (8) · ♥ 100.0% (2) · ♦ 85.7% (7) · ♣ 62.5% (8)
vs par by strain: NT +1.88 (32) · a suit +0.12 (67)
vs par by level: part-score +1.03 (34) · game +0.23 (60) · slam +3.80 (5)
By role: declaring +0.33/bd (-2.06 vs par · 50) · defending +1.47/bd (+3.46 vs par · 50)
By vulnerability: vulnerable +0.21/bd (-0.40 vs par · 50) · not vulnerable +1.60/bd (+1.80 vs par · 50)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 2 | J.Chung | P.Molina – J.Jesua | Open | 10 | +15.2 | +1.52 | -1.60 |
| Round 3 | J.Chung | P.Burtin – T.Haas | Open | 10 | +13.6 | +1.36 | +2.20 |
| Round 4 | J.Chung | C.Montagnac – D.Renson | Open | 10 | -2.0 | -0.20 | -1.10 |
| Round 6 | J.Chung | E.Arsentyeva – Z.Zvezdin | Closed | 10 | +35.4 | +3.54 | +4.60 |
| Round 7 | J.Chung | F.Karwur – D.Sacul | Open | 10 | +16.2 | +1.62 | +1.20 |
| Round 9 | J.Chung | E.Khonicheva – A.Gulevich | Closed | 10 | +8.9 | +0.89 | +0.40 |
| Round 10 | J.Chung | C.Audiche – W.El Ahmady | Open | 10 | +22.8 | +2.28 | +4.30 |
| Round 12 | J.Chung | M.Moran – R.Boland | Closed | 10 | +2.7 | +0.27 | +0.30 |
| Round 13 | J.Chung | G.Winkler – M.Dumbovich | Closed | 10 | -23.3 | -2.33 | -4.40 |
| Round 15 | J.Chung | J.Hackett – J.Hackett | Closed | 10 | +0.9 | +0.09 | +1.10 |
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 |
|---|---|---|---|---|---|---|---|
| +14.1 | Round 6 | FRANCORUSSE | 27 | 5♥x | ♠3 | -6 | +14 |
| +13.5 | Round 7 | INDONESIA OPEN | 6 | 5♦x | ♣6 | -3 | +14 |
| +13.4 | Round 3 | FRAPEI | 25 | 3♥x | ♣7 | -4 | +12 |
| +13.0 | Round 6 | FRANCORUSSE | 22 | 6♠ | ♦7 | -1 | +17 |
| +9.8 | Round 10 | WACH | 2 | 3♥x | ♣Q | = | +12 |
| +9.5 | Round 9 | MOET | 24 | 3NT | ♠J | = | +7 |
| +8.7 | Round 7 | INDONESIA OPEN | 9 | 6♣ | ♠7 | +1 | +13 |
| +7.4 | Round 4 | RENSON | 1 | 4♠x | ♣3 | -2 | +9 |
| +6.7 | Round 10 | WACH | 9 | 3NT | ♠Q | = | +7 |
| +6.7 | Round 12 | MORAN | 21 | 2♠ | ♥3 | = | +11 |
| +6.6 | Round 6 | FRANCORUSSE | 26 | 3NT | ♠2 | -1 | +16 |
| +6.4 | Round 2 | GRENTHE | 16 | 4♠ | ♥A | -1 | +2 |
| +6.4 | Round 10 | WACH | 8 | 3♥ | ♣J | -3 | +11 |
| +6.3 | Round 15 | MOSSOP | 28 | 2♥ | ♦K | -1 | +10 |
| +5.5 | Round 7 | INDONESIA OPEN | 4 | 3NT | ♠8 | -1 | +12 |
| +5.4 | Round 3 | FRAPEI | 21 | 3NT | ♦4 | = | +0 |
| +5.3 | Round 3 | FRAPEI | 22 | 3NT | ♦4 | -2 | +7 |
| +5.1 | Round 9 | MOET | 30 | 1NT | ♦A | +1 | +6 |
| +4.7 | Round 10 | WACH | 1 | 3NT | ♠3 | +1 | +0 |
| +4.5 | Round 2 | GRENTHE | 18 | 4♠ | ♦9 | +2 | -9 |
| +4.4 | Round 15 | MOSSOP | 23 | 2NT | ♣2 | -1 | +5 |
| +4.1 | Round 9 | MOET | 23 | 3♠ | ♠2 | -1 | +5 |
| +3.9 | Round 6 | FRANCORUSSE | 29 | 4♥ | ♣10 | -1 | +6 |
| +3.5 | Round 12 | MORAN | 30 | 3♠ | ♦K | +1 | +6 |
| +3.5 | Round 13 | DUMBOVICH | 6 | 3♥ | ♦J | -1 | +0 |
| +3.2 | Round 6 | FRANCORUSSE | 30 | 3♣ | ♦A | -3 | +2 |
| +3.1 | Round 2 | GRENTHE | 20 | 3♥ | ♠2 | = | +0 |
| +3.0 | Round 6 | FRANCORUSSE | 23 | 3NT | ♦3 | +2 | +1 |
| +2.8 | Round 12 | MORAN | 27 | 4♠x | ♥J | -1 | +6 |
| +2.8 | Round 13 | DUMBOVICH | 4 | 5♠ | ♦9 | +2 | +2 |
| +2.7 | Round 10 | WACH | 4 | 4♠ | ♦A | -1 | +6 |
| +2.6 | Round 9 | MOET | 29 | 3♦ | ♥6 | +1 | +0 |
| +2.0 | Round 2 | GRENTHE | 13 | 6♦ | ♣6 | = | +0 |
| +1.7 | Round 2 | GRENTHE | 19 | 3NT | ♥7 | +1 | -1 |
| +1.7 | Round 15 | MOSSOP | 27 | 4♥ | ♠8 | +1 | +0 |
| +1.6 | Round 4 | RENSON | 8 | 4♥ | ♠J | = | -1 |
| +1.6 | Round 9 | MOET | 25 | 3NT | ♠7 | = | +13 |
| +1.4 | Round 6 | FRANCORUSSE | 28 | 2♥ | ♣9 | -2 | +0 |
| +1.4 | Round 10 | WACH | 5 | 3♠ | ♥Q | -1 | +5 |
| +1.4 | Round 15 | MOSSOP | 25 | 4♥ | ♦K | = | -1 |
| +1.3 | Round 7 | INDONESIA OPEN | 2 | 1NT | ♠10 | +1 | +0 |
| +1.3 | Round 15 | MOSSOP | 24 | 2♥ | ♦K | +2 | +1 |
| +1.2 | Round 2 | GRENTHE | 12 | 3NT | ♠6 | +2 | +0 |
| +1.2 | Round 3 | FRAPEI | 28 | 6♠x | ♦Q | -2 | +0 |
| +0.9 | Round 12 | MORAN | 23 | 3NT | ♥K | +2 | +0 |
| +0.8 | Round 13 | DUMBOVICH | 2 | 5♦ | ♠Q | +1 | -10 |
| +0.7 | Round 12 | MORAN | 22 | 4♠ | ♣K | = | -1 |
| +0.6 | Round 4 | RENSON | 7 | 4♥ | ♣A | +2 | -13 |
| +0.5 | Round 7 | INDONESIA OPEN | 8 | 4♣ | ♠2 | = | +0 |
| +0.4 | Round 3 | FRAPEI | 23 | 3NT | ♥A | +2 | +12 |
| +0.3 | Round 6 | FRANCORUSSE | 25 | 5♣ | ♦7 | -2 | +8 |
| +0.3 | Round 7 | INDONESIA OPEN | 3 | 3NT | ♦Q | -1 | +5 |
| +0.3 | Round 12 | MORAN | 25 | 2♠ | ♦J | = | -1 |
| +0.2 | Round 4 | RENSON | 10 | 3♣ | ♦K | = | +0 |
| +0.1 | Round 3 | FRAPEI | 24 | 4♠ | ♦3 | = | +1 |
| -0.0 | Round 15 | MOSSOP | 30 | 2♥ | ♥7 | +1 | +0 |
| -0.1 | Round 9 | MOET | 22 | 4♥ | ♣Q | +1 | +0 |
| -0.3 | Round 2 | GRENTHE | 17 | 1NT | ♥8 | -1 | +1 |
| -0.3 | Round 15 | MOSSOP | 21 | 4♠ | ♣J | +1 | +0 |
| -0.4 | Round 9 | MOET | 28 | 4♥ | ♠A | = | +0 |
| -0.4 | Round 10 | WACH | 6 | 5♣ | ♥A | = | -3 |
| -0.5 | Round 12 | MORAN | 29 | 4♥ | ♦5 | +1 | +0 |
| -0.6 | Round 2 | GRENTHE | 14 | 2♠ | ♠3 | -1 | -2 |
| -0.6 | Round 3 | FRAPEI | 26 | 3NT | ♣6 | +2 | -1 |
| -0.9 | Round 2 | GRENTHE | 15 | 5♥ | ♠A | +1 | -9 |
| -0.9 | Round 3 | FRAPEI | 30 | 4♠ | ♥8 | +1 | +0 |
| -0.9 | Round 4 | RENSON | 2 | 2♥ | ♣K | -1 | -2 |
| -1.0 | Round 13 | DUMBOVICH | 3 | 6NT | ♠5 | = | -11 |
| -1.2 | Round 4 | RENSON | 9 | 3NT | ♥5 | +2 | +0 |
| -1.2 | Round 12 | MORAN | 26 | 3NT | ♥Q | +2 | -1 |
| -1.4 | Round 9 | MOET | 21 | 2♦ | ♠7 | +1 | -11 |
| -1.5 | Round 10 | WACH | 3 | 1NT | ♦J | +1 | +11 |
| -1.5 | Round 13 | DUMBOVICH | 8 | 4♠ | ♦9 | -3 | -1 |
| -1.6 | Round 4 | RENSON | 5 | 2♠ | ♥9 | +1 | +0 |
| -1.8 | Round 7 | INDONESIA OPEN | 7 | 3♣ | ♠A | = | -11 |
| -1.9 | Round 2 | GRENTHE | 11 | Adj. | ♦A | +2 | |
| -2.2 | Round 4 | RENSON | 6 | 4♠x | ♥6 | -2 | +0 |
| -2.2 | Round 7 | INDONESIA OPEN | 5 | 1NT | ♠3 | = | -5 |
| -2.3 | Round 4 | RENSON | 3 | 4♠ | ♠J | -1 | -5 |
| -2.6 | Round 3 | FRAPEI | 29 | 3NT | ♣10 | +1 | +1 |
| -3.4 | Round 10 | WACH | 7 | 1NT | ♦3 | -1 | +0 |
| -3.4 | Round 13 | DUMBOVICH | 5 | 3♥x | ♠K | -2 | -5 |
| -3.6 | Round 4 | RENSON | 4 | 4♥ | ♦A | = | +1 |
| -3.6 | Round 10 | WACH | 10 | 4♥ | ♣A | -1 | -6 |
| -4.1 | Round 12 | MORAN | 24 | 3NT | ♦2 | -1 | -10 |
| -4.2 | Round 6 | FRANCORUSSE | 24 | 2♣ | ♦5 | +4 | -6 |
| -4.2 | Round 7 | INDONESIA OPEN | 1 | 4♥ | ♠Q | = | -8 |
| -4.4 | Round 15 | MOSSOP | 26 | 3NT | ♠5 | = | +1 |
| -4.5 | Round 15 | MOSSOP | 29 | 3NT | ♣10 | = | +1 |
| -4.7 | Round 13 | DUMBOVICH | 9 | 4♥x | ♠A | -1 | +0 |
| -5.0 | Round 15 | MOSSOP | 22 | 4♥x | ♦2 | -1 | -6 |
| -5.4 | Round 7 | INDONESIA OPEN | 10 | 3♦ | ♣10 | -2 | -8 |
| -5.6 | Round 13 | DUMBOVICH | 10 | 3NT | ♥A | -2 | -8 |
| -5.7 | Round 9 | MOET | 26 | 4♠ | ♥10 | -3 | -10 |
| -5.9 | Round 6 | FRANCORUSSE | 21 | 4♠x | ♣7 | -1 | -12 |
| -6.0 | Round 13 | DUMBOVICH | 7 | 3NT | ♠10 | = | +1 |
| -6.4 | Round 9 | MOET | 27 | 4♠x | ♣A | -1 | -6 |
| -6.4 | Round 12 | MORAN | 28 | 4♠ | ♥J | = | -7 |
| -8.1 | Round 3 | FRAPEI | 27 | 3NT | ♣10 | -1 | -10 |
| -8.2 | Round 13 | DUMBOVICH | 1 | 2♥x | ♠3 | +1 | -12 |