GROSSACK Zachary · USA
vs par split: bidding -0.20 · play +1.12
Strength of schedule: opponents averaged +0.02/bd (an average draw) → opponent-adjusted +1.05/bd
Card play — on target: opening leads 78.6% #39 of 75 · declarer play 71.4% #43 of 75 · defence 76.0% #52 of 76
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 100.0% (2) | 75.0% (12) |
| Declarer play | 60.0% (5) | 77.8% (9) |
| Defence | 66.7% (3) | 77.3% (22) |
Opening leads by suit led: ♠ 50.0% (2) · ♥ 50.0% (2) · ♦ 100.0% (6) · ♣ 75.0% (4)
vs par by strain: NT -0.13 (15) · a suit +1.37 (35)
vs par by level: part-score +1.11 (18) · game +0.00 (28) · slam +6.50 (4)
By role: declaring +0.78/bd (-1.88 vs par · 25) · defending +1.27/bd (+3.72 vs par · 25)
By vulnerability: vulnerable +1.20/bd (+1.89 vs par · 26) · not vulnerable +0.84/bd (-0.12 vs par · 24)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | A.Grossack | Y.Ding – T.Qin | Closed | 10 | +13.0 | +1.30 | +0.10 |
| Round 2 | A.Grossack | N.Apteker – B.Norton | Open | 10 | +25.7 | +2.57 | +3.90 |
| Round 4 | A.Grossack | S.Sun – H.Wei | Closed | 10 | -8.6 | -0.86 | -2.60 |
| Round 7 | A.Grossack | G.Minutti – M.Crusizio | Closed | 10 | +27.7 | +2.77 | +2.10 |
| Round 8 | A.Grossack | B.Combescure – J.Bernard | Open | 10 | -6.4 | -0.64 | +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 |
|---|---|---|---|---|---|---|---|
| +14.9 | Round 2 | NORTON | 12 | 6♥ | ♦K | -1 | +15 |
| +12.3 | Round 2 | NORTON | 15 | 4♥ | ♦J | -1 | +12 |
| +11.1 | Round 1 | CUST | 8 | 6♠ | ♦7 | = | +5 |
| +11.1 | Round 2 | NORTON | 11 | 3NT | ♠K | +2 | +8 |
| +9.7 | Round 7 | VILLA FABBRICHE | 9 | 4♥ | ♦7 | -1 | +12 |
| +9.2 | Round 7 | VILLA FABBRICHE | 2 | 5♥x | ♥7 | -2 | +12 |
| +8.5 | Round 7 | VILLA FABBRICHE | 3 | 3NT | ♠5 | +1 | +1 |
| +7.1 | Round 7 | VILLA FABBRICHE | 4 | 4♥ | ♠A | = | +0 |
| +5.7 | Round 8 | FRANCE | 15 | 2♥ | ♣3 | +3 | +12 |
| +5.1 | Round 2 | NORTON | 13 | 3♥ | ♣9 | = | +10 |
| +5.1 | Round 4 | SYNREY RDFZ | 7 | 1NT | ♠Q | -1 | +5 |
| +4.3 | Round 1 | CUST | 5 | 3NT | ♥10 | +2 | +1 |
| +3.5 | Round 8 | FRANCE | 12 | 1NT | ♣J | = | +0 |
| +3.2 | Round 4 | SYNREY RDFZ | 9 | 4♥ | ♣K | +1 | +11 |
| +2.7 | Round 1 | CUST | 6 | 2♥x | ♦7 | -1 | -2 |
| +2.5 | Round 4 | SYNREY RDFZ | 6 | 4♠ | ♦7 | = | -1 |
| +2.5 | Round 8 | FRANCE | 11 | 3♥ | ♣8 | -1 | -2 |
| +2.2 | Round 1 | CUST | 2 | 3NT | ♥7 | +1 | +0 |
| +1.6 | Round 7 | VILLA FABBRICHE | 6 | 3NT | ♦3 | = | +1 |
| +1.5 | Round 4 | SYNREY RDFZ | 4 | 4♥ | ♣6 | = | +1 |
| +0.8 | Round 8 | FRANCE | 13 | 3♦ | ♣J | +2 | +10 |
| +0.7 | Round 1 | CUST | 9 | 2NT | ♥4 | +1 | +1 |
| +0.6 | Round 7 | VILLA FABBRICHE | 5 | 4♠ | ♦4 | +1 | +0 |
| +0.5 | Round 1 | CUST | 7 | 4♠ | ♥9 | -1 | -6 |
| +0.4 | Round 2 | NORTON | 17 | 5♠ | ♥A | = | +0 |
| +0.2 | Round 4 | SYNREY RDFZ | 3 | 4♠ | ♣A | = | -6 |
| +0.1 | Round 1 | CUST | 3 | 4♠ | ♣4 | +2 | +2 |
| -0.1 | Round 2 | NORTON | 20 | 2♥ | ♦K | +2 | +10 |
| -0.4 | Round 4 | SYNREY RDFZ | 5 | 1NT | ♣5 | -2 | +1 |
| -0.7 | Round 4 | SYNREY RDFZ | 1 | 4♥ | ♦K | +2 | -11 |
| -0.7 | Round 7 | VILLA FABBRICHE | 7 | 2♦ | ♠Q | +2 | -10 |
| -1.0 | Round 7 | VILLA FABBRICHE | 10 | 3NT | ♣J | +1 | -1 |
| -1.0 | Round 8 | FRANCE | 17 | 1NT | ♥Q | -2 | +0 |
| -1.1 | Round 2 | NORTON | 16 | 3NT | ♥4 | +4 | -17 |
| -1.2 | Round 1 | CUST | 10 | 3NT | ♥7 | +2 | +2 |
| -1.7 | Round 8 | FRANCE | 20 | 4♥ | ♠K | = | +1 |
| -2.1 | Round 4 | SYNREY RDFZ | 10 | 2♥ | ♣A | -2 | -2 |
| -2.3 | Round 8 | FRANCE | 18 | 4♥ | ♠5 | +2 | -1 |
| -2.7 | Round 8 | FRANCE | 16 | 2♥ | ♦6 | +1 | -1 |
| -3.5 | Round 2 | NORTON | 19 | 4♥ | ♦7 | +2 | +11 |
| -3.6 | Round 1 | CUST | 4 | 1NT | ♠2 | -2 | +7 |
| -3.6 | Round 7 | VILLA FABBRICHE | 8 | 2♣x | ♥Q | -2 | -5 |
| -3.7 | Round 7 | VILLA FABBRICHE | 1 | 6♠ | ♦10 | +1 | +11 |
| -3.8 | Round 1 | CUST | 1 | 2♠ | ♣Q | -1 | -9 |
| -4.3 | Round 2 | NORTON | 14 | 3♣ | ♣6 | -2 | -5 |
| -5.0 | Round 8 | FRANCE | 14 | 6♥ | ♦Q | +1 | -5 |
| -6.2 | Round 8 | FRANCE | 19 | 4♥ | ♣K | = | -3 |
| -7.5 | Round 4 | SYNREY RDFZ | 2 | 3NT | ♦3 | -2 | -11 |
| -9.1 | Round 2 | NORTON | 18 | 4♥ | ♦3 | -1 | -5 |
| -10.4 | Round 4 | SYNREY RDFZ | 8 | 5♣x | ♥6 | +1 | -13 |