ROSENBERG Michael · WOLFSON
9rank
+50.4Butler · 84 bds
+0.60per board
±4.8swing
+0.93vs par /bd
+0.13adjusted /bd
by round
vs par split: bidding +0.54 · play +0.36
Strength of schedule: opponents averaged -0.47/bd (an easy draw) → opponent-adjusted +0.13/bd
Card play — on target: opening leads 77.3% · declarer play 85.0% · defence 97.5%
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 80.0% (5) | 76.5% (17) |
| Declarer play | 100.0% (3) | 82.4% (17) |
| Defence | 100.0% (10) | 96.7% (30) |
Opening leads by suit led: ♠ 66.7% (6) · ♥ 33.3% (3) · ♦ 100.0% (5) · ♣ 87.5% (8)
vs par by strain: NT +1.26 (19) · a suit +0.80 (64)
vs par by level: part-score +0.88 (32) · game +1.00 (43) · slam +0.50 (8)
By role: declaring +0.63/bd (-0.55 vs par · 44) · defending +0.56/bd (+2.55 vs par · 40)
By vulnerability: vulnerable +1.11/bd (+0.95 vs par · 42) · not vulnerable +0.09/bd (+0.91 vs par · 42)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round of 16 | J.Wolfson | C.Tornay – G.Tornay | Closed | 14 | +15.3 | +1.09 | +1.00 |
| Round of 16 | J.Wolfson | S.Subeck – S.Subeck | Open | 14 | +6.4 | +0.46 | +0.86 |
| Quarterfinal | J.Wolfson | L.Lewis – P.Lewis | Open | 14 | +19.3 | +1.38 | +0.36 |
| Quarterfinal | J.Wolfson | M.Itabashi – E.Wold | Closed | 14 | -17.0 | -1.21 | -0.07 |
| Semifinal | J.Wolfson | X.Shen – M.Shen | Open | 14 | +10.4 | +0.74 | +1.86 |
| Semifinal | J.Wolfson | X.Shen – M.Shen | Open | 14 | +16.0 | +1.14 | +1.57 |
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 |
|---|---|---|---|---|---|---|---|
| +11.3 | Semifinal | CHINA EVERTRUST | 32 | 3NT | ♠8 | = | +10 |
| +10.6 | Round of 16 | TORNAY | 12 | 3♣x | ♦7 | -3 | +9 |
| +10.0 | Semifinal | CHINA EVERTRUST | 1 | 4♦ | ♠8 | = | +10 |
| +10.0 | Semifinal | CHINA EVERTRUST | 10 | 6♣ | ♥A | -1 | +13 |
| +9.8 | Round of 16 | TORNAY | 40 | 6♠ | ♥Q | = | +0 |
| +9.7 | Quarterfinal | LEWIS | 13 | 4♥ | ♠3 | = | -1 |
| +7.9 | Quarterfinal | LEWIS | 2 | 5♦ | ♣10 | -1 | +5 |
| +7.4 | Round of 16 | TORNAY | 6 | 4♥ | ♦K | -2 | +11 |
| +6.7 | Semifinal | CHINA EVERTRUST | 35 | 6♥x | ♥A | -2 | -7 |
| +6.6 | Round of 16 | TORNAY | 8 | 4♦ | ♣J | -2 | +9 |
| +6.4 | Round of 16 | TORNAY | 2 | 6♥ | ♠Q | = | +0 |
| +6.3 | Semifinal | CHINA EVERTRUST | 31 | 4♥ | ♦3 | = | +0 |
| +5.9 | Quarterfinal | LEWIS | 24 | 3NT | ♥J | -1 | +10 |
| +5.2 | Round of 16 | TORNAY | 30 | 1♠ | ♣5 | -1 | +10 |
| +5.1 | Quarterfinal | LEWIS | 3 | 4♠ | ♦K | -1 | +6 |
| +4.8 | Round of 16 | TORNAY | 37 | 5♣x | ♥6 | -1 | +8 |
| +4.3 | Round of 16 | TORNAY | 3 | 2♥ | ♠6 | +3 | +6 |
| +4.3 | Semifinal | CHINA EVERTRUST | 30 | 4♥ | ♠3 | -1 | +5 |
| +3.6 | Quarterfinal | LEWIS | 8 | 3NT | ♠5 | +2 | +0 |
| +3.3 | Semifinal | CHINA EVERTRUST | 41 | 2♠ | ♣7 | = | +1 |
| +3.2 | Round of 16 | TORNAY | 32 | 3♥ | ♠9 | -1 | +1 |
| +3.0 | Quarterfinal | LEWIS | 14 | 3NT | ♥J | +1 | +1 |
| +2.9 | Round of 16 | TORNAY | 13 | 2♠ | ♣Q | +1 | +1 |
| +2.7 | Semifinal | CHINA EVERTRUST | 12 | 3NT | ♥3 | -1 | +10 |
| +2.6 | Round of 16 | TORNAY | 29 | 2♦ | ♥Q | -2 | +0 |
| +2.4 | Round of 16 | TORNAY | 35 | Pass | +3 | ||
| +2.1 | Quarterfinal | LEWIS | 6 | 4♥ | ♦8 | = | -1 |
| +2.0 | Round of 16 | TORNAY | 5 | 3NT | ♦A | -1 | +11 |
| +2.0 | Quarterfinal | LEWIS | 23 | 4♥ | ♠8 | -3 | +8 |
| +2.0 | Semifinal | CHINA EVERTRUST | 11 | 2NT | ♦6 | +1 | +6 |
| +2.0 | Semifinal | CHINA EVERTRUST | 37 | 5♦ | ♥3 | -3 | +8 |
| +1.7 | Quarterfinal | LEWIS | 5 | 2♠ | ♠5 | +2 | +6 |
| +1.7 | Quarterfinal | LEWIS | 9 | 2♦ | ♠J | +1 | +1 |
| +1.7 | Quarterfinal | LEWIS | 11 | 2♥ | ♦5 | +1 | +0 |
| +1.7 | Quarterfinal | LEWIS | 27 | 4♠ | ♦6 | +1 | +0 |
| +1.3 | Semifinal | CHINA EVERTRUST | 29 | 4♥ | ♠2 | = | +1 |
| +1.1 | Round of 16 | TORNAY | 38 | 2♣ | ♦5 | -1 | +0 |
| +1.0 | Semifinal | CHINA EVERTRUST | 38 | 4♥ | ♠A | = | +1 |
| +0.7 | Semifinal | CHINA EVERTRUST | 6 | 1NT | ♥9 | +3 | -6 |
| +0.7 | Semifinal | CHINA EVERTRUST | 8 | 4♥ | ♦Q | -2 | +6 |
| +0.7 | Semifinal | CHINA EVERTRUST | 42 | 7♠ | ♣8 | -2 | +11 |
| +0.6 | Round of 16 | TORNAY | 4 | 2♠ | ♦Q | +1 | -10 |
| +0.3 | Round of 16 | TORNAY | 10 | 3♦ | ♦J | +2 | +0 |
| +0.3 | Quarterfinal | LEWIS | 22 | 4♥ | ♠5 | +2 | +2 |
| +0.1 | Round of 16 | TORNAY | 11 | 1NT | ♠3 | -1 | +2 |
| +0.1 | Quarterfinal | LEWIS | 25 | 2♦ | ♠4 | +1 | +0 |
| +0.0 | Semifinal | CHINA EVERTRUST | 33 | 4♥ | ♦J | = | +1 |
| -0.1 | Quarterfinal | LEWIS | 1 | 1NT | ♦10 | = | +1 |
| -0.1 | Quarterfinal | LEWIS | 28 | 4♥ | ♣5 | +1 | +0 |
| -0.3 | Round of 16 | TORNAY | 33 | 2♦ | ♥3 | = | +0 |
| -0.3 | Semifinal | CHINA EVERTRUST | 2 | 1NT | ♥4 | -2 | -11 |
| -0.3 | Semifinal | CHINA EVERTRUST | 5 | 3NT | ♠3 | +1 | +0 |
| -0.5 | Round of 16 | TORNAY | 41 | 2♠ | ♥2 | -2 | +9 |
| -0.7 | Quarterfinal | LEWIS | 20 | 2♣ | ♦3 | +2 | +0 |
| -0.7 | Semifinal | CHINA EVERTRUST | 4 | 3♣ | ♥5 | = | +0 |
| -0.8 | Round of 16 | TORNAY | 39 | 2♦ | ♣10 | -2 | +0 |
| -0.9 | Quarterfinal | LEWIS | 26 | 3NT | ♣J | = | -1 |
| -1.0 | Semifinal | CHINA EVERTRUST | 9 | 1NT | ♥A | +2 | -7 |
| -1.3 | Round of 16 | TORNAY | 34 | 3♣ | ♦K | -1 | +2 |
| -1.4 | Quarterfinal | LEWIS | 12 | 3NT | ♠10 | = | +0 |
| -2.4 | Quarterfinal | LEWIS | 18 | 4♥ | ♣7 | -1 | -5 |
| -2.6 | Quarterfinal | LEWIS | 17 | 3NT | ♥K | -2 | -5 |
| -2.7 | Round of 16 | TORNAY | 36 | 4♠ | ♣A | +1 | -4 |
| -2.7 | Semifinal | CHINA EVERTRUST | 14 | 4♥ | ♠K | -2 | +0 |
| -3.0 | Semifinal | CHINA EVERTRUST | 3 | 3NT | ♠7 | +3 | +13 |
| -3.1 | Quarterfinal | LEWIS | 21 | 3NT | ♣3 | = | +0 |
| -3.3 | Quarterfinal | LEWIS | 15 | 4♥ | ♣K | = | +0 |
| -3.3 | Semifinal | CHINA EVERTRUST | 34 | 4♥ | ♣2 | = | +0 |
| -3.3 | Semifinal | CHINA EVERTRUST | 40 | 3♣ | ♥7 | +1 | +7 |
| -3.7 | Round of 16 | TORNAY | 14 | 6♠ | ♦Q | +1 | -1 |
| -3.7 | Semifinal | CHINA EVERTRUST | 7 | 3NT | ♥9 | = | -10 |
| -4.0 | Semifinal | CHINA EVERTRUST | 13 | 6♦ | ♠2 | = | +2 |
| -4.4 | Quarterfinal | LEWIS | 7 | 3♦ | ♠Q | -3 | -5 |
| -4.5 | Round of 16 | TORNAY | 9 | 4♠ | ♥K | +1 | +0 |
| -4.6 | Quarterfinal | LEWIS | 4 | 4♥ | ♣A | -2 | -2 |
| -5.6 | Quarterfinal | LEWIS | 19 | 5♠x | ♣Q | -1 | +0 |
| -5.8 | Round of 16 | TORNAY | 7 | 4♥ | ♣6 | -1 | -12 |
| -6.7 | Quarterfinal | LEWIS | 10 | 3♥ | ♦10 | -4 | -6 |
| -7.0 | Semifinal | CHINA EVERTRUST | 36 | 4♥x | ♦9 | -3 | -2 |
| -7.3 | Semifinal | CHINA EVERTRUST | 39 | 6♦ | ♠K | -2 | -14 |
| -8.2 | Round of 16 | TORNAY | 31 | 2♠ | ♣A | -1 | -8 |
| -8.3 | Quarterfinal | LEWIS | 16 | 4♠ | ♠7 | = | -10 |
| -8.9 | Round of 16 | TORNAY | 42 | 5♣x | ♠A | -4 | -9 |
| -11.9 | Round of 16 | TORNAY | 1 | 4♥x | ♣5 | = | -12 |