BERKOWITZ Dana · WILLENKEN
vs par split: bidding -0.57 · play -0.07
Strength of schedule: opponents averaged +0.14/bd (a tough draw) → opponent-adjusted +0.66/bd
Card play — on target: opening leads 68.8% #324 of 398 · declarer play 66.7% #250 of 398 · defence 89.7% #112 of 399
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 50.0% (4) | 75.0% (12) |
| Declarer play | 100.0% (3) | 55.6% (9) |
| Defence | 87.5% (8) | 90.5% (21) |
Opening leads by suit led: ♠ 66.7% (3) · ♥ 50.0% (4) · ♦ 33.3% (3) · ♣ 100.0% (6)
vs par by strain: NT -1.00 (16) · a suit -0.50 (40)
vs par by level: part-score +0.95 (21) · game -1.30 (30) · slam -3.40 (5)
By role: declaring +0.28/bd (-3.15 vs par · 27) · defending +0.74/bd (+1.69 vs par · 29)
By vulnerability: vulnerable +0.10/bd (-1.64 vs par · 28) · not vulnerable +0.93/bd (+0.36 vs par · 28)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | C.Willenken | L.Chen – Y.Wang | Open | 7 | +7.0 | +1.00 | -0.29 |
| Round 2 | C.Willenken | S.Burgess – N.Djurovic | Open | 7 | +6.2 | +0.89 | +1.29 |
| Round 3 | C.Willenken | B.Han – H.Lou | Closed | 7 | +5.9 | +0.84 | +1.71 |
| Round 4 | C.Willenken | S.Brink – C.Rimstedt | Closed | 7 | -11.6 | -1.66 | -2.71 |
| Round 5 | C.Willenken | L.Chen – J.Yang | Closed | 7 | +5.1 | +0.73 | +0.14 |
| Round 6 | C.Willenken | X.Chen – H.Zheng | Closed | 7 | +14.6 | +2.09 | -0.43 |
| Round 7 | C.Willenken | Q.Yan – M.Yang | Open | 7 | -2.7 | -0.39 | -4.29 |
| Round 8 | C.Willenken | J.Dai – Y.Zhang | Open | 7 | +4.4 | +0.63 | -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 |
|---|---|---|---|---|---|---|---|
| +12.6 | Round 6 | HUBEI QIAOXIE | 9 | 6♥ | ♣10 | -1 | +13 |
| +8.7 | Round 1 | ZHEJIANG JINJIANG BRIDGE CLUB | 6 | 3NT | ♠A | +1 | +7 |
| +7.3 | Round 8 | GEELY AUTOMOBILE | 25 | 2♠ | ♥2 | +1 | +10 |
| +6.7 | Round 2 | BURGESS | 11 | 2♠x | ♥A | -2 | +5 |
| +6.6 | Round 6 | HUBEI QIAOXIE | 12 | 6♥ | ♠2 | = | +1 |
| +4.2 | Round 2 | BURGESS | 14 | 5♦ | ♣K | -1 | +11 |
| +4.1 | Round 3 | THE LOCOMOTIVE SPORTS ASSOCIAT | 17 | 3♦ | ♣A | = | +0 |
| +4.1 | Round 8 | GEELY AUTOMOBILE | 26 | 3♥ | ♣A | -1 | +0 |
| +4.0 | Round 4 | BRINK | 24 | 2♥ | ♦J | +2 | +7 |
| +3.7 | Round 8 | GEELY AUTOMOBILE | 24 | 1NT | ♥2 | +4 | +6 |
| +2.8 | Round 7 | HEILONGJIANG TEAM | 20 | 3♠ | ♦J | -1 | +5 |
| +2.6 | Round 5 | LUCKY STAR | 7 | 2♥ | ♦A | +1 | +6 |
| +2.5 | Round 5 | LUCKY STAR | 4 | 3NT | ♥5 | = | -2 |
| +2.4 | Round 1 | ZHEJIANG JINJIANG BRIDGE CLUB | 4 | 1NT | ♣8 | +3 | -9 |
| +2.4 | Round 2 | BURGESS | 8 | 5♥ | ♦10 | +1 | +1 |
| +2.3 | Round 2 | BURGESS | 10 | 3NT | ♦5 | = | +0 |
| +2.3 | Round 8 | GEELY AUTOMOBILE | 22 | 2♠ | ♥2 | = | +0 |
| +2.1 | Round 1 | ZHEJIANG JINJIANG BRIDGE CLUB | 5 | 4♥ | ♠Q | -2 | +5 |
| +1.9 | Round 7 | HEILONGJIANG TEAM | 15 | 3♣ | ♥2 | +3 | +2 |
| +1.5 | Round 5 | LUCKY STAR | 6 | 4♠ | ♦A | = | -1 |
| +1.5 | Round 7 | HEILONGJIANG TEAM | 17 | 3NT | ♥2 | +1 | -10 |
| +1.4 | Round 3 | THE LOCOMOTIVE SPORTS ASSOCIAT | 15 | 5♣x | ♦5 | -3 | +5 |
| +1.4 | Round 6 | HUBEI QIAOXIE | 13 | 1NT | ♥5 | +1 | +10 |
| +1.3 | Round 1 | ZHEJIANG JINJIANG BRIDGE CLUB | 7 | 4♥ | ♠4 | = | -1 |
| +1.3 | Round 4 | BRINK | 27 | 4♠ | ♣Q | -2 | +0 |
| +1.1 | Round 4 | BRINK | 25 | 3NT | ♠3 | +1 | +1 |
| +1.0 | Round 3 | THE LOCOMOTIVE SPORTS ASSOCIAT | 16 | 1NT | ♥7 | +2 | +0 |
| +0.9 | Round 3 | THE LOCOMOTIVE SPORTS ASSOCIAT | 18 | 1NT | ♥6 | +2 | +6 |
| +0.8 | Round 5 | LUCKY STAR | 1 | 5♠x | ♥K | -2 | +5 |
| +0.6 | Round 6 | HUBEI QIAOXIE | 14 | 4♠ | ♥3 | -2 | -5 |
| +0.3 | Round 1 | ZHEJIANG JINJIANG BRIDGE CLUB | 2 | 4♥ | ♦K | +1 | +0 |
| +0.1 | Round 6 | HUBEI QIAOXIE | 10 | 4♥ | ♠2 | = | -1 |
| -0.1 | Round 3 | THE LOCOMOTIVE SPORTS ASSOCIAT | 19 | 4♥ | ♥10 | +1 | +0 |
| -0.1 | Round 5 | LUCKY STAR | 2 | 4♥ | ♠J | +1 | +0 |
| -0.1 | Round 8 | GEELY AUTOMOBILE | 28 | 4♥ | ♠2 | -2 | -1 |
| -0.3 | Round 2 | BURGESS | 13 | 3NT | ♠J | = | +0 |
| -0.4 | Round 3 | THE LOCOMOTIVE SPORTS ASSOCIAT | 20 | 3NT | ♠8 | +1 | +1 |
| -0.4 | Round 5 | LUCKY STAR | 5 | 1♠ | ♣2 | +2 | +0 |
| -1.0 | Round 3 | THE LOCOMOTIVE SPORTS ASSOCIAT | 21 | 5♠ | ♣J | = | +0 |
| -1.0 | Round 4 | BRINK | 26 | 2♠ | ♣A | +1 | -11 |
| -1.0 | Round 7 | HEILONGJIANG TEAM | 18 | 7♣x | ♦A | -4 | -16 |
| -1.5 | Round 7 | HEILONGJIANG TEAM | 19 | 4♠ | ♥K | -1 | -4 |
| -1.8 | Round 4 | BRINK | 28 | 2♥ | ♠J | +2 | -1 |
| -1.8 | Round 5 | LUCKY STAR | 3 | 2♠ | ♦4 | +1 | -7 |
| -2.2 | Round 7 | HEILONGJIANG TEAM | 16 | 2♠ | ♣K | +2 | -1 |
| -2.8 | Round 1 | ZHEJIANG JINJIANG BRIDGE CLUB | 3 | 3NT | ♥3 | +1 | -4 |
| -3.3 | Round 6 | HUBEI QIAOXIE | 8 | 4♥x | ♣6 | -1 | -11 |
| -3.4 | Round 6 | HUBEI QIAOXIE | 11 | 4♠ | ♦2 | +3 | -10 |
| -4.2 | Round 2 | BURGESS | 12 | 2NT | ♦5 | +1 | -8 |
| -4.2 | Round 7 | HEILONGJIANG TEAM | 21 | 4♠ | ♦3 | -1 | -6 |
| -4.6 | Round 8 | GEELY AUTOMOBILE | 27 | 4♠ | ♥8 | -1 | -5 |
| -4.9 | Round 2 | BURGESS | 9 | 2NT | ♠A | = | +0 |
| -5.0 | Round 1 | ZHEJIANG JINJIANG BRIDGE CLUB | 1 | 4♥ | ♣8 | = | +0 |
| -7.1 | Round 4 | BRINK | 23 | 6♥ | ♦2 | -1 | -17 |
| -8.1 | Round 4 | BRINK | 22 | 6♦ | ♣A | = | +2 |
| -8.3 | Round 8 | GEELY AUTOMOBILE | 23 | 3NT | ♠Q | -4 | -14 |