ROSENBERG Kevin · CALIFORNIAN ACES
vs par split: bidding -1.12 · play -0.10
Strength of schedule: opponents averaged +0.47/bd (a tough draw) → opponent-adjusted +0.58/bd
Card play — on target: opening leads 76.5% #44 of 61 · declarer play 87.5% #6 of 61 · defence 86.7% #29 of 61
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 66.7% (3) | 78.6% (14) |
| Declarer play | 90.9% (11) | 84.6% (13) |
| Defence | 80.0% (10) | 90.0% (20) |
Opening leads by suit led: ♠ 80.0% (5) · ♥ 66.7% (3) · ♦ 66.7% (3) · ♣ 83.3% (6)
vs par by strain: NT -3.96 (26) · a suit +0.44 (43)
vs par by level: part-score +1.00 (29) · game -2.66 (35) · slam -4.00 (5)
By role: declaring -0.40/bd (-4.05 vs par · 40) · defending +0.79/bd (+2.20 vs par · 30)
By vulnerability: vulnerable -0.23/bd (-1.30 vs par · 37) · not vulnerable +0.49/bd (-1.46 vs par · 33)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | F.Lin | A.Rathi – D.Kriventsov | Open | 10 | +22.4 | +2.24 | +1.40 |
| Round 2 | F.Lin | J.Howard – P.Hollands | Closed | 10 | +17.0 | +1.70 | +1.30 |
| Round 3 | F.Lin | A.Grossack – Z.Grossack | Open | 10 | -5.6 | -0.56 | -1.40 |
| Round 4 | F.Lin | M.Ozgur – S.Uslupehlivan | Closed | 10 | -9.0 | -0.90 | -3.70 |
| Round 5 | F.Lin | M.Di Franco – G.Zanasi | Open | 10 | -3.7 | -0.37 | -1.50 |
| Round 6 | F.Lin | F.Ferro – F.Montes De Oca | Open | 10 | +4.4 | +0.44 | -0.70 |
| Round 7 | F.Lin | K.Hashimoto – T.Kikuchi | Open | 10 | -17.9 | -1.79 | -5.00 |
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 |
|---|---|---|---|---|---|---|---|
| +14.5 | Round 1 | 🇺🇸 USA JOLLY | 7 | 2♦x | ♣9 | -4 | +14 |
| +13.1 | Round 2 | 🇦🇺 AUSTRALIA | 17 | 7♦ | ♥5 | = | +0 |
| +9.0 | Round 3 | WAR OF ROSES | 25 | 5♥x | ♠6 | -2 | +11 |
| +6.4 | Round 1 | 🇺🇸 USA JOLLY | 8 | 4♠ | ♥3 | +2 | +1 |
| +6.1 | Round 1 | 🇺🇸 USA JOLLY | 6 | 4♠ | ♦K | +1 | +0 |
| +4.5 | Round 2 | 🇦🇺 AUSTRALIA | 13 | 3NT | ♠5 | -1 | +6 |
| +4.5 | Round 5 | 🇮🇹 ITALIA | 14 | 2NT | ♥J | = | +6 |
| +4.1 | Round 2 | 🇦🇺 AUSTRALIA | 15 | 4♥ | ♣7 | -2 | +8 |
| +4.0 | Round 7 | 🇯🇵 JAPAN | 1 | 4♥ | ♠7 | = | +0 |
| +3.8 | Round 4 | 🇹🇷 TURKIYE | 1 | 4♣ | ♠6 | = | -5 |
| +3.8 | Round 4 | 🇹🇷 TURKIYE | 3 | 3♠ | ♦Q | +1 | +2 |
| +3.6 | Round 5 | 🇮🇹 ITALIA | 15 | 2♠ | ♠4 | +1 | +7 |
| +3.5 | Round 6 | 🇦🇷 ARGENTINA | 29 | 3NT | ♠K | = | +0 |
| +3.4 | Round 6 | 🇦🇷 ARGENTINA | 23 | 4♠ | ♥K | +2 | +13 |
| +3.1 | Round 2 | 🇦🇺 AUSTRALIA | 18 | 6♣ | ♦9 | -1 | +2 |
| +3.0 | Round 5 | 🇮🇹 ITALIA | 11 | 3NT | ♥Q | +2 | -11 |
| +2.6 | Round 6 | 🇦🇷 ARGENTINA | 30 | 1NT | ♠10 | -1 | -4 |
| +2.4 | Round 7 | 🇯🇵 JAPAN | 3 | 4♣ | ♠J | -1 | +5 |
| +2.1 | Round 2 | 🇦🇺 AUSTRALIA | 20 | 3♦ | ♦K | -1 | +5 |
| +2.1 | Round 4 | 🇹🇷 TURKIYE | 7 | 2♠ | ♣3 | = | +1 |
| +2.1 | Round 4 | 🇹🇷 TURKIYE | 10 | 2NT | ♠6 | +1 | +10 |
| +1.9 | Round 1 | 🇺🇸 USA JOLLY | 3 | 2♠ | ♦K | = | +1 |
| +1.8 | Round 1 | 🇺🇸 USA JOLLY | 2 | 2♠ | ♠J | +1 | +0 |
| +1.8 | Round 3 | WAR OF ROSES | 21 | 4♣ | ♠Q | = | +0 |
| +1.7 | Round 5 | 🇮🇹 ITALIA | 20 | 2♥ | ♦2 | = | +6 |
| +1.6 | Round 4 | 🇹🇷 TURKIYE | 5 | 4♠ | ♥5 | +2 | -11 |
| +1.5 | Round 3 | WAR OF ROSES | 28 | 4♠ | ♣2 | = | +0 |
| +1.5 | Round 6 | 🇦🇷 ARGENTINA | 24 | 2♥ | ♥2 | -2 | +0 |
| +1.5 | Round 6 | 🇦🇷 ARGENTINA | 26 | 3NT | ♠3 | +1 | +0 |
| +1.5 | Round 7 | 🇯🇵 JAPAN | 9 | 1NT | ♥J | = | +0 |
| +0.6 | Round 3 | WAR OF ROSES | 30 | 3♦ | ♣A | -2 | +0 |
| +0.5 | Round 7 | 🇯🇵 JAPAN | 5 | 5♦ | ♠J | +1 | -11 |
| +0.4 | Round 6 | 🇦🇷 ARGENTINA | 22 | 3NT | ♠K | +2 | +0 |
| +0.3 | Round 5 | 🇮🇹 ITALIA | 13 | 4♠ | ♥A | = | +0 |
| +0.2 | Round 2 | 🇦🇺 AUSTRALIA | 16 | 4♠ | ♣4 | -1 | +5 |
| -0.1 | Round 1 | 🇺🇸 USA JOLLY | 5 | 4♥ | ♦J | +2 | +13 |
| -0.5 | Round 3 | WAR OF ROSES | 23 | 2NT | ♠K | = | +0 |
| -0.5 | Round 6 | 🇦🇷 ARGENTINA | 27 | 2♠ | ♣5 | = | +0 |
| -0.5 | Round 6 | 🇦🇷 ARGENTINA | 28 | 4♠ | ♣K | = | +0 |
| -0.6 | Round 2 | 🇦🇺 AUSTRALIA | 12 | 3NT | ♥5 | +2 | -1 |
| -0.6 | Round 3 | WAR OF ROSES | 29 | 3♦ | ♠8 | +1 | +0 |
| -0.7 | Round 1 | 🇺🇸 USA JOLLY | 4 | 1NT | ♥2 | +3 | -2 |
| -0.7 | Round 5 | 🇮🇹 ITALIA | 19 | 2♥ | ♠A | +1 | +1 |
| -1.0 | Round 7 | 🇯🇵 JAPAN | 10 | 3♥ | ♠9 | = | +10 |
| -1.1 | Round 2 | 🇦🇺 AUSTRALIA | 11 | 1NT | ♥T | -1 | +0 |
| -1.2 | Round 3 | WAR OF ROSES | 26 | 3NT | ♦6 | +3 | -13 |
| -1.3 | Round 4 | 🇹🇷 TURKIYE | 6 | 4♥ | ♠J | -1 | -6 |
| -1.3 | Round 5 | 🇮🇹 ITALIA | 17 | 3♣ | ♣3 | +1 | -7 |
| -1.5 | Round 7 | 🇯🇵 JAPAN | 8 | 1NT | ♣6 | -1 | +2 |
| -1.6 | Round 1 | 🇺🇸 USA JOLLY | 1 | 5NT | ♣A | = | -1 |
| -1.6 | Round 6 | 🇦🇷 ARGENTINA | 25 | 3♦ | ♣A | -1 | -4 |
| -1.8 | Round 5 | 🇮🇹 ITALIA | 18 | 4♥ | ♦6 | +1 | +0 |
| -1.9 | Round 4 | 🇹🇷 TURKIYE | 8 | 3NT | ♥K | = | +0 |
| -2.4 | Round 1 | 🇺🇸 USA JOLLY | 10 | 4♥ | ♠J | -1 | -6 |
| -2.4 | Round 3 | WAR OF ROSES | 24 | 6♥x | ♠9 | -2 | +5 |
| -2.6 | Round 4 | 🇹🇷 TURKIYE | 9 | 3NT | ♥9 | +1 | -13 |
| -3.5 | Round 1 | 🇺🇸 USA JOLLY | 9 | 2NT | ♠K | -1 | -6 |
| -3.5 | Round 2 | 🇦🇺 AUSTRALIA | 14 | 4♠ | ♥3 | +1 | +0 |
| -3.5 | Round 3 | WAR OF ROSES | 27 | 3NT | ♦6 | -3 | -7 |
| -3.5 | Round 5 | 🇮🇹 ITALIA | 16 | 3NT | ♠5 | -2 | -5 |
| -4.9 | Round 2 | 🇦🇺 AUSTRALIA | 19 | 3N | ♠2 | -1 | -12 |
| -5.1 | Round 7 | 🇯🇵 JAPAN | 7 | 6NT | ♥3 | -1 | -17 |
| -5.4 | Round 7 | 🇯🇵 JAPAN | 6 | 1NT | ♣4 | +2 | -13 |
| -5.9 | Round 6 | 🇦🇷 ARGENTINA | 21 | 4♥ | ♥7 | -1 | -12 |
| -6.2 | Round 7 | 🇯🇵 JAPAN | 4 | 3NT | ♦6 | -1 | -12 |
| -7.1 | Round 4 | 🇹🇷 TURKIYE | 2 | 4♥x | ♦A | -2 | -5 |
| -7.1 | Round 7 | 🇯🇵 JAPAN | 2 | 4♥ | ♠4 | +3 | -14 |
| -9.5 | Round 4 | 🇹🇷 TURKIYE | 4 | 3NT | ♦K | = | -10 |
| -9.5 | Round 5 | 🇮🇹 ITALIA | 12 | 3NT | ♦2 | -1 | -12 |
| -10.3 | Round 3 | WAR OF ROSES | 22 | 6♣ | ♠Q | = | -10 |