DUFRAT Katarzyna · ROMAMIAMI
15rank
+100.7Butler · 100 bds
+1.01per board
±4.4swing
+0.80vs par /bd · #54/518
+0.53adjusted /bd
by round
vs par split: bidding +0.11 · play +0.69
Strength of schedule: opponents averaged -0.47/bd (an easy draw) → opponent-adjusted +0.53/bd
Card play — on target: opening leads 82.1% #209 of 518 · declarer play 80.0% #145 of 517 · defence 84.0% #214 of 518
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 87.5% (8) | 80.0% (20) |
| Declarer play | 100.0% (6) | 71.4% (14) |
| Defence | 88.2% (17) | 81.8% (33) |
Opening leads by suit led: ♠ 75.0% (8) · ♥ 90.0% (10) · ♦ 100.0% (4) · ♣ 66.7% (6)
vs par by strain: NT +2.81 (36) · a suit -0.33 (64)
vs par by level: part-score -0.08 (39) · game +1.47 (57) · slam -0.25 (4)
By role: declaring +1.54/bd (+0.40 vs par · 50) · defending +0.47/bd (+1.20 vs par · 50)
By vulnerability: vulnerable +1.60/bd (+0.32 vs par · 50) · not vulnerable +0.41/bd (+1.28 vs par · 50)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | A.Versace | Z.Jin – L.Wang | Closed | 10 | +21.4 | +2.14 | +1.50 |
| Round 2 | A.Versace | J.Zhou – L.Wang | Open | 10 | -12.4 | -1.24 | -1.00 |
| Round 3 | A.Versace | X.Sun – W.Tian | Open | 10 | -9.6 | -0.96 | -0.50 |
| Round 4 | A.Versace | V.Kovachev – D.Marquardt | Closed | 10 | -4.4 | -0.44 | -2.30 |
| Round 5 | A.Versace | G.Hinze – K.Enfield | Closed | 10 | +31.9 | +3.19 | +3.70 |
| Round 6 | A.Versace | A.Fein – C.Predmest | Closed | 10 | +24.7 | +2.47 | +1.60 |
| Round 7 | A.Versace | D.Gurvich – R.Moller | Closed | 10 | -10.4 | -1.04 | +1.60 |
| Round 8 | A.Versace | P.Reynolds – J.Reynolds | Closed | 10 | +14.2 | +1.42 | +2.40 |
| Round 9 | A.Versace | V.Muller – M.Villegas | Closed | 10 | +52.2 | +5.22 | +4.00 |
| Round 10 | A.Versace | A.Gromov – A.Gulevich | Open | 10 | -6.9 | -0.69 | -3.00 |
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 |
|---|---|---|---|---|---|---|---|
| +13.7 | Round 1 | CRE8IVE | 3 | 6♦x | ♥A | = | +10 |
| +12.7 | Round 9 | MAVILO | 15 | 4♠ | ♥A | -1 | +13 |
| +11.9 | Round 6 | ALPHA | 1 | 4♠x | ♠Q | = | +12 |
| +11.3 | Round 9 | MAVILO | 14 | 5♥x | ♣K | -3 | +12 |
| +10.9 | Round 9 | MAVILO | 13 | 3NT | ♠Q | = | +10 |
| +10.0 | Round 5 | HINZE | 21 | 3♥x | ♣K | -2 | +9 |
| +9.4 | Round 5 | HINZE | 29 | 3NT | ♦10 | -1 | +12 |
| +9.3 | Round 9 | MAVILO | 19 | 4♠ | ♣2 | -2 | +11 |
| +8.5 | Round 4 | VALIO | 20 | 3NT | ♣4 | +1 | +11 |
| +6.9 | Round 9 | MAVILO | 12 | 5♠x | ♣6 | -2 | +2 |
| +6.5 | Round 8 | HARD YAKKA | 9 | 5♣ | ♥6 | = | +3 |
| +6.4 | Round 6 | ALPHA | 7 | 5♣ | ♠8 | = | -2 |
| +5.7 | Round 1 | CRE8IVE | 10 | 3NT | ♠3 | -3 | +4 |
| +5.5 | Round 1 | CRE8IVE | 8 | 3NT | ♦2 | +1 | +1 |
| +4.8 | Round 5 | HINZE | 22 | 3NT | ♣7 | +1 | +11 |
| +4.6 | Round 1 | CRE8IVE | 9 | 4♥ | ♣4 | = | +10 |
| +4.4 | Round 8 | HARD YAKKA | 10 | 3NT | ♠4 | -1 | +11 |
| +4.2 | Round 2 | CHINA XHJT1 | 15 | 3NT | ♠K | -1 | +16 |
| +3.9 | Round 4 | VALIO | 14 | 3♥ | ♦Q | = | +6 |
| +3.7 | Round 3 | FEIXIANG | 2 | 3♥ | ♥2 | -2 | +11 |
| +3.6 | Round 3 | FEIXIANG | 1 | 3NT | ♣4 | +1 | +7 |
| +3.5 | Round 5 | HINZE | 30 | 3♠x | ♥3 | -3 | +2 |
| +3.5 | Round 10 | VYTAS | 25 | 4♠ | ♣2 | +2 | +2 |
| +3.0 | Round 8 | HARD YAKKA | 4 | 4♠ | ♥A | -1 | -3 |
| +3.0 | Round 10 | VYTAS | 26 | 2♥ | ♠A | = | +0 |
| +2.8 | Round 1 | CRE8IVE | 6 | 3NT | ♣J | +2 | +1 |
| +2.6 | Round 5 | HINZE | 25 | 4♠ | ♣K | -1 | +3 |
| +2.6 | Round 8 | HARD YAKKA | 6 | 3NT | ♠3 | +1 | +10 |
| +2.4 | Round 7 | DONNER | 14 | 5♣ | ♥A | = | +0 |
| +2.4 | Round 8 | HARD YAKKA | 8 | 1NT | ♥4 | = | +6 |
| +2.3 | Round 5 | HINZE | 26 | 6NT | ♠2 | = | +0 |
| +2.3 | Round 6 | ALPHA | 4 | 3NT | ♣5 | +1 | +0 |
| +2.1 | Round 7 | DONNER | 11 | 2NT | ♠4 | +1 | +1 |
| +1.9 | Round 6 | ALPHA | 3 | 4♥ | ♦5 | +2 | +11 |
| +1.8 | Round 7 | DONNER | 19 | 2♠ | ♣8 | -1 | +4 |
| +1.7 | Round 10 | VYTAS | 29 | 3♠ | ♦K | = | +1 |
| +1.6 | Round 4 | VALIO | 16 | 2♦ | ♠8 | -1 | -11 |
| +1.6 | Round 6 | ALPHA | 10 | 1♠ | ♥3 | +1 | +0 |
| +1.4 | Round 2 | CHINA XHJT1 | 14 | 3NT | ♠6 | +3 | +14 |
| +1.3 | Round 3 | FEIXIANG | 9 | 3♦ | ♠K | = | -1 |
| +1.3 | Round 5 | HINZE | 24 | 1NT | ♠8 | -2 | +8 |
| +1.2 | Round 3 | FEIXIANG | 10 | 1NT | ♣3 | -1 | +1 |
| +1.2 | Round 4 | VALIO | 17 | 3NT | ♥10 | +2 | +1 |
| +1.1 | Round 5 | HINZE | 23 | 1NT | ♦5 | = | -2 |
| +0.8 | Round 6 | ALPHA | 5 | 5♥x | ♦A | -3 | -5 |
| +0.8 | Round 6 | ALPHA | 6 | 4♠ | ♦2 | = | -1 |
| +0.8 | Round 10 | VYTAS | 24 | 4♠ | ♣6 | -1 | +5 |
| +0.8 | Round 10 | VYTAS | 27 | 2♥ | ♠K | +1 | -6 |
| +0.7 | Round 8 | HARD YAKKA | 3 | 3♦ | ♠3 | -1 | -2 |
| +0.6 | Round 6 | ALPHA | 8 | 2♠ | ♥3 | +1 | +6 |
| +0.6 | Round 9 | MAVILO | 18 | 3NT | ♣2 | +2 | +1 |
| +0.5 | Round 9 | MAVILO | 11 | 4♠ | ♠10 | +1 | +0 |
| +0.4 | Round 2 | CHINA XHJT1 | 20 | 4♥ | ♠7 | +1 | +0 |
| +0.4 | Round 4 | VALIO | 11 | 1NT | ♦2 | = | +1 |
| +0.3 | Round 2 | CHINA XHJT1 | 13 | 4♥ | ♣K | +2 | -13 |
| +0.3 | Round 3 | FEIXIANG | 6 | 4♥ | ♣8 | = | +1 |
| +0.3 | Round 6 | ALPHA | 2 | 3NT | ♥Q | = | +0 |
| +0.3 | Round 9 | MAVILO | 17 | 4♥ | ♠9 | +1 | -10 |
| +0.1 | Round 9 | MAVILO | 20 | 1NT | ♦9 | +1 | +1 |
| -0.1 | Round 3 | FEIXIANG | 3 | 3NT | ♦J | +1 | +0 |
| -0.2 | Round 5 | HINZE | 28 | 1NT | ♠3 | -1 | -1 |
| -0.3 | Round 1 | CRE8IVE | 4 | 4♠ | ♥3 | +1 | +0 |
| -0.3 | Round 2 | CHINA XHJT1 | 18 | 2♦ | ♠3 | -1 | -1 |
| -0.4 | Round 9 | MAVILO | 16 | 4♠ | ♦6 | +1 | +0 |
| -0.7 | Round 2 | CHINA XHJT1 | 16 | 3NT | ♠5 | +1 | +0 |
| -0.9 | Round 7 | DONNER | 15 | 2♠ | ♥Q | -1 | +3 |
| -1.0 | Round 1 | CRE8IVE | 2 | 3NT | ♦4 | +1 | +0 |
| -1.0 | Round 8 | HARD YAKKA | 5 | 2♠ | ♦J | = | -1 |
| -1.0 | Round 8 | HARD YAKKA | 7 | 2♠ | ♣6 | +2 | -10 |
| -1.1 | Round 7 | DONNER | 16 | 4♠ | ♦3 | +1 | +0 |
| -1.2 | Round 4 | VALIO | 18 | 3♠ | ♥6 | = | +0 |
| -1.2 | Round 10 | VYTAS | 21 | 2♥ | ♣10 | +1 | +0 |
| -1.5 | Round 8 | HARD YAKKA | 2 | 3♣ | ♣3 | = | +10 |
| -1.6 | Round 7 | DONNER | 17 | 3♠ | ♥3 | = | +7 |
| -1.7 | Round 10 | VYTAS | 23 | 4♥ | ♠2 | -1 | -12 |
| -1.9 | Round 3 | FEIXIANG | 7 | 2♠ | ♥6 | = | -5 |
| -1.9 | Round 6 | ALPHA | 9 | 2♠ | ♥3 | = | -5 |
| -1.9 | Round 8 | HARD YAKKA | 1 | 3NT | ♣3 | +1 | +0 |
| -2.0 | Round 3 | FEIXIANG | 8 | 3♥ | ♥K | -1 | +6 |
| -2.0 | Round 7 | DONNER | 20 | 2♦ | ♥K | -1 | -11 |
| -2.1 | Round 10 | VYTAS | 22 | 2♥ | ♣A | +2 | -1 |
| -2.2 | Round 7 | DONNER | 13 | 3NT | ♠10 | +2 | +13 |
| -2.3 | Round 10 | VYTAS | 30 | 3♠ | ♥3 | -2 | -8 |
| -2.4 | Round 1 | CRE8IVE | 1 | 1♠ | ♥A | = | +0 |
| -2.5 | Round 2 | CHINA XHJT1 | 11 | 4♦ | ♠10 | -1 | -6 |
| -2.6 | Round 7 | DONNER | 18 | 6♣ | ♦A | = | +2 |
| -2.8 | Round 1 | CRE8IVE | 7 | 1♠ | ♦Q | -1 | -5 |
| -2.9 | Round 5 | HINZE | 27 | 3NT | ♠4 | -1 | -5 |
| -3.0 | Round 4 | VALIO | 19 | 1NT | ♥3 | -1 | -10 |
| -3.8 | Round 2 | CHINA XHJT1 | 12 | 4♠ | ♣J | = | -10 |
| -4.4 | Round 1 | CRE8IVE | 5 | 4♠ | ♥Q | -2 | -6 |
| -4.8 | Round 2 | CHINA XHJT1 | 19 | 4♠ | ♥9 | -2 | -7 |
| -4.8 | Round 4 | VALIO | 15 | 3NT | ♥Q | -2 | -5 |
| -4.9 | Round 4 | VALIO | 12 | 4♠ | ♥A | -1 | -5 |
| -6.1 | Round 4 | VALIO | 13 | 3NT | ♠9 | +1 | -11 |
| -6.3 | Round 7 | DONNER | 12 | 3NT | ♦Q | = | -3 |
| -6.6 | Round 2 | CHINA XHJT1 | 17 | 3NT | ♥K | = | -3 |
| -6.9 | Round 3 | FEIXIANG | 5 | 4♠ | ♣5 | -3 | -12 |
| -8.8 | Round 3 | FEIXIANG | 4 | 6♦ | ♥4 | -2 | -13 |
| -9.4 | Round 10 | VYTAS | 28 | 4♥ | ♥4 | = | -11 |