SONTAG Alan · MARK GORDON
vs par split: bidding +0.00 · play +0.14
Strength of schedule: opponents averaged +0.11/bd (a tough draw) → opponent-adjusted +0.72/bd
Card play — on target: opening leads 66.7% #229 of 310 · declarer play 83.3% #97 of 310 · defence 92.9% #55 of 311
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 33.3% (3) | 100.0% (3) |
| Declarer play | · | 83.3% (6) |
| Defence | 100.0% (4) | 90.0% (10) |
Opening leads by suit led: ♥ 50.0% (4) · ♦ 100.0% (1) · ♣ 100.0% (1)
vs par by strain: NT -1.14 (7) · a suit +0.40 (35)
vs par by level: part-score -1.41 (22) · game +1.78 (18) · slam +2.50 (2)
By role: declaring +0.60/bd (-1.71 vs par · 28) · defending +0.64/bd (+3.86 vs par · 14)
By vulnerability: vulnerable +1.06/bd (-0.75 vs par · 20) · not vulnerable +0.20/bd (+0.95 vs par · 22)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | D.Berkowitz | Y.Zack – M.Barel | Open | 7 | -3.2 | -0.46 | -0.43 |
| Round 2 | D.Berkowitz | A.Bianchedi – E.Muzzio | Open | 7 | -2.7 | -0.39 | -3.29 |
| Round 3 | D.Berkowitz | S.Yan – G.Zhang | Open | 7 | -1.4 | -0.20 | -0.57 |
| Round 6 | D.Berkowitz | B.Zhang – X.Li | Open | 7 | +14.3 | +2.04 | +1.29 |
| Round 7 | D.Berkowitz | B.Drijver – S.Brink | Closed | 7 | +23.5 | +3.36 | +4.43 |
| Round 8 | D.Berkowitz | J.Kranyak – V.Demuy | Open | 7 | -4.8 | -0.69 | -0.57 |
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 |
|---|---|---|---|---|---|---|---|
| +8.9 | Round 7 | DIAMOND | 17 | 5♣x | ♥K | = | +4 |
| +8.6 | Round 1 | MCALLISTER | 4 | 4♥ | ♦A | = | +0 |
| +7.3 | Round 6 | CHINA OPN(B) | 12 | 4♠x | ♥3 | -2 | +8 |
| +5.2 | Round 7 | DIAMOND | 16 | 6♥x | ♠Q | -2 | +5 |
| +5.1 | Round 2 | LAVAZZA | 10 | 4♥ | ♠K | = | +3 |
| +4.3 | Round 7 | DIAMOND | 20 | 4♥ | ♣9 | -2 | +3 |
| +4.1 | Round 6 | CHINA OPN(B) | 10 | 3NT | ♥Q | -1 | +6 |
| +4.0 | Round 7 | DIAMOND | 18 | 5♦ | ♥6 | +1 | +13 |
| +3.6 | Round 1 | MCALLISTER | 7 | 3♥ | ♦9 | = | +7 |
| +3.0 | Round 2 | LAVAZZA | 12 | 3♥ | ♥K | = | +1 |
| +2.7 | Round 7 | DIAMOND | 15 | 4♠ | ♥3 | -1 | +12 |
| +2.7 | Round 8 | LEBRON | 22 | 2♠ | ♥Q | -1 | +6 |
| +2.6 | Round 7 | DIAMOND | 21 | 6♠ | ♥2 | = | +0 |
| +2.5 | Round 3 | MCMULLIN | 18 | 3♥ | ♠J | = | +6 |
| +2.3 | Round 3 | MCMULLIN | 19 | 4♠ | ♦K | = | +6 |
| +1.8 | Round 6 | CHINA OPN(B) | 11 | 3♣ | ♣3 | = | +0 |
| +1.8 | Round 6 | CHINA OPN(B) | 13 | 2♠ | ♥J | = | +0 |
| +1.6 | Round 8 | LEBRON | 25 | 3♥ | ♣3 | +1 | +1 |
| +1.3 | Round 3 | MCMULLIN | 20 | 1NT | ♥J | +2 | -1 |
| +0.9 | Round 2 | LAVAZZA | 8 | 1NT | ♠3 | +1 | +0 |
| +0.9 | Round 8 | LEBRON | 28 | 4♠ | ♣7 | = | +3 |
| +0.2 | Round 6 | CHINA OPN(B) | 8 | 3♠ | ♦K | -1 | -2 |
| +0.1 | Round 6 | CHINA OPN(B) | 14 | 3♠ | ♠2 | +1 | +2 |
| -0.3 | Round 3 | MCMULLIN | 15 | 4♥ | ♠10 | +2 | +11 |
| -0.8 | Round 1 | MCALLISTER | 2 | 3♥ | ♣J | +2 | -10 |
| -1.0 | Round 3 | MCMULLIN | 21 | 4♣ | ♦2 | +1 | -10 |
| -1.0 | Round 6 | CHINA OPN(B) | 9 | 4♥ | ♦K | -1 | -5 |
| -1.4 | Round 8 | LEBRON | 23 | 2♣ | ♠K | = | +1 |
| -1.5 | Round 8 | LEBRON | 24 | 2♣ | ♦6 | +1 | +1 |
| -1.6 | Round 2 | LAVAZZA | 14 | 4♠ | ♥3 | -1 | -4 |
| -1.7 | Round 1 | MCALLISTER | 3 | 2♠ | ♥5 | -2 | +1 |
| -2.1 | Round 2 | LAVAZZA | 9 | 2♠ | ♣K | +3 | -2 |
| -2.3 | Round 3 | MCMULLIN | 16 | 1NT | ♠2 | = | -8 |
| -2.4 | Round 1 | MCALLISTER | 1 | 3NT | ♦7 | = | +1 |
| -2.6 | Round 1 | MCALLISTER | 5 | 2♠ | ♠2 | -2 | -2 |
| -3.4 | Round 8 | LEBRON | 26 | 3♦ | ♥2 | +2 | -10 |
| -3.6 | Round 2 | LAVAZZA | 11 | 4♠ | ♣K | -1 | -4 |
| -3.7 | Round 8 | LEBRON | 27 | 3♠ | ♦J | +1 | -6 |
| -3.9 | Round 3 | MCMULLIN | 17 | 4♠ | ♠2 | -1 | -8 |
| -4.2 | Round 7 | DIAMOND | 19 | 1NT | ♥8 | -1 | -6 |
| -4.4 | Round 2 | LAVAZZA | 13 | 4♠ | ♦2 | +3 | -17 |
| -7.9 | Round 1 | MCALLISTER | 6 | 3NT | ♥4 | = | +0 |