SOBCZAK Mateusz · POLAND JUNIORS
88rank
+48.5Butler · 100 bds
+0.48per board
±4.8swing
+0.56vs par /bd · #112/478
+0.45adjusted /bd
by round
vs par split: bidding -0.19 · play +0.75
Strength of schedule: opponents averaged -0.03/bd (an average draw) → opponent-adjusted +0.45/bd
Card play — on target: opening leads 77.8% #180 of 476 · declarer play 79.2% #216 of 478 · defence 81.8% #350 of 478
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 60.0% (5) | 84.6% (13) |
| Declarer play | 66.7% (6) | 83.3% (18) |
| Defence | 82.4% (17) | 81.5% (27) |
Opening leads by suit led: ♠ 60.0% (5) · ♥ 66.7% (6) · ♦ 100.0% (4) · ♣ 100.0% (3)
vs par by strain: NT +0.43 (30) · a suit +0.61 (69)
vs par by level: part-score +0.90 (39) · game +1.14 (51) · slam -4.22 (9)
By role: declaring -0.06/bd (-1.07 vs par · 56) · defending +1.18/bd (+2.64 vs par · 44)
By vulnerability: vulnerable +1.02/bd (+1.22 vs par · 51) · not vulnerable -0.08/bd (-0.12 vs par · 49)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | M.Chodacki | M.Thoma – P.Ravenna | Closed | 10 | -17.4 | -1.74 | -4.50 |
| Round 2 | M.Chodacki | H.Ao – J.Gu | Closed | 10 | +13.6 | +1.36 | -0.10 |
| Round 3 | M.Chodacki | N.L'Ecuyer – P.Street | Closed | 10 | -0.2 | -0.02 | -1.00 |
| Round 4 | M.Chodacki | D.Jacob – J.Czyzowicz | Closed | 10 | +16.0 | +1.60 | +2.30 |
| Round 5 | M.Chodacki | D.Lindop – D.Baxter | Closed | 10 | -1.4 | -0.14 | +1.60 |
| Round 6 | M.Chodacki | J.Safsten – G.Andersson | Closed | 10 | +15.8 | +1.58 | +3.70 |
| Round 7 | M.Chodacki | J.Lilienstein – M.Polowan | Closed | 10 | +2.5 | +0.25 | -1.70 |
| Round 8 | M.Chodacki | K.Dwyer – S.Huang | Closed | 10 | -6.4 | -0.64 | +1.80 |
| Round 9 | M.Chodacki | S.Chokshi – K.Anklesaria | Closed | 10 | +6.0 | +0.60 | -0.20 |
| Round 10 | M.Chodacki | J.Wooldridge – J.Hurd | Closed | 10 | +20.0 | +2.00 | +3.70 |
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 |
|---|---|---|---|---|---|---|---|
| +13.9 | Round 9 | FORMIDABLES | 15 | 4♥ | ♠A | +1 | +15 |
| +12.6 | Round 6 | ANNA | 3 | 3♣x | ♣2 | = | +13 |
| +10.7 | Round 4 | TEAM CANADA | 15 | 5♠ | ♣6 | +1 | +14 |
| +10.6 | Round 2 | BASEGGIO | 16 | 3NT | ♥10 | -1 | +14 |
| +9.6 | Round 7 | LILIENSTEIN | 18 | 5♣ | ♥A | -1 | +11 |
| +9.5 | Round 4 | TEAM CANADA | 17 | 4♥ | ♦J | -3 | +11 |
| +8.9 | Round 1 | CHAGAS | 5 | 1NTx | ♦K | -2 | +6 |
| +8.7 | Round 10 | SPECTOR | 21 | 3NT | ♣2 | -1 | +10 |
| +7.1 | Round 2 | BASEGGIO | 12 | 4♥ | ♦4 | -2 | +8 |
| +6.1 | Round 8 | MOSS | 10 | 3NT | ♥2 | -3 | +5 |
| +5.5 | Round 6 | ANNA | 10 | 4♥ | ♦Q | -3 | +9 |
| +5.5 | Round 8 | MOSS | 1 | 3NT | ♥3 | -1 | +5 |
| +5.2 | Round 10 | SPECTOR | 26 | 2♥x | ♣3 | -1 | +9 |
| +4.9 | Round 5 | ODDY | 21 | 5♣ | ♣3 | +2 | +11 |
| +4.4 | Round 2 | BASEGGIO | 15 | 4♥ | ♦6 | +2 | +7 |
| +4.1 | Round 8 | MOSS | 3 | 3NT | ♦J | -2 | +13 |
| +3.9 | Round 10 | SPECTOR | 22 | 2♠ | ♦3 | +2 | +10 |
| +3.8 | Round 1 | CHAGAS | 3 | 6♠ | ♥7 | +1 | -11 |
| +3.8 | Round 4 | TEAM CANADA | 11 | 4♠ | ♦A | = | +0 |
| +3.7 | Round 6 | ANNA | 6 | 3NT | ♥5 | -2 | +5 |
| +3.6 | Round 7 | LILIENSTEIN | 19 | 4♥ | ♦A | = | +0 |
| +3.5 | Round 3 | FROGS | 3 | 3♦ | ♥A | -3 | +0 |
| +3.3 | Round 2 | BASEGGIO | 19 | 1♥x | ♣A | -1 | -11 |
| +3.2 | Round 3 | FROGS | 8 | 3♣ | ♣2 | = | +5 |
| +3.1 | Round 6 | ANNA | 9 | 2♦ | ♦2 | -2 | +5 |
| +3.1 | Round 10 | SPECTOR | 27 | 4♥ | ♦7 | -1 | +10 |
| +3.0 | Round 5 | ODDY | 28 | 2♥ | ♣Q | +1 | +1 |
| +2.9 | Round 3 | FROGS | 1 | 3♠ | ♦K | -1 | +4 |
| +2.9 | Round 4 | TEAM CANADA | 13 | 5♦ | ♥6 | -1 | +6 |
| +2.7 | Round 2 | BASEGGIO | 20 | 2♠ | ♦8 | +1 | +1 |
| +2.6 | Round 7 | LILIENSTEIN | 14 | 5♥x | ♥6 | -1 | -5 |
| +2.4 | Round 1 | CHAGAS | 9 | 5♦ | ♣4 | = | +0 |
| +2.4 | Round 7 | LILIENSTEIN | 16 | 6♠ | ♦2 | +1 | -11 |
| +2.3 | Round 4 | TEAM CANADA | 14 | 2♠ | ♣6 | +2 | +6 |
| +2.1 | Round 9 | FORMIDABLES | 14 | 4♠ | ♦8 | -1 | +5 |
| +1.9 | Round 9 | FORMIDABLES | 11 | 3NT | ♣3 | = | -1 |
| +1.8 | Round 6 | ANNA | 1 | 3♦ | ♠K | -1 | -2 |
| +1.4 | Round 9 | FORMIDABLES | 12 | 6NT | ♣3 | = | +0 |
| +1.3 | Round 7 | LILIENSTEIN | 15 | 4♥ | ♦7 | = | +0 |
| +1.1 | Round 9 | FORMIDABLES | 20 | 3NT | ♥4 | +3 | -13 |
| +1.1 | Round 10 | SPECTOR | 23 | Adj | ♦2 | +1 | |
| +1.0 | Round 3 | FROGS | 9 | 3NT | ♣9 | +1 | +0 |
| +1.0 | Round 5 | ODDY | 26 | 2♠ | ♣4 | +1 | +0 |
| +0.8 | Round 10 | SPECTOR | 25 | 3NT | ♥10 | +2 | +0 |
| +0.7 | Round 2 | BASEGGIO | 11 | 1NT | ♥3 | +1 | +0 |
| +0.7 | Round 2 | BASEGGIO | 13 | 4♥ | ♦J | +1 | +0 |
| +0.6 | Round 5 | ODDY | 25 | 3NT | ♥5 | +2 | +1 |
| +0.5 | Round 8 | MOSS | 6 | 3NT | ♠Q | = | +0 |
| +0.3 | Round 8 | MOSS | 9 | 3♠ | ♣6 | +1 | +1 |
| +0.2 | Round 6 | ANNA | 5 | 3♠ | ♠7 | -1 | +2 |
| +0.2 | Round 7 | LILIENSTEIN | 20 | 2♥ | ♦3 | -1 | +1 |
| +0.1 | Round 3 | FROGS | 7 | 3NT | ♣J | +1 | +0 |
| +0.1 | Round 3 | FROGS | 10 | 4♠ | ♥J | -2 | -8 |
| -0.0 | Round 3 | FROGS | 4 | 2♦ | ♥A | -1 | +0 |
| -0.0 | Round 3 | FROGS | 5 | 3♦ | ♠2 | -1 | +2 |
| +0.0 | Round 4 | TEAM CANADA | 18 | 2♥ | ♠7 | = | +0 |
| -0.1 | Round 2 | BASEGGIO | 18 | 3NT | ♠Q | +1 | +0 |
| -0.2 | Round 5 | ODDY | 29 | 3NT | ♣J | +1 | -1 |
| -0.2 | Round 8 | MOSS | 8 | 3♠ | ♣5 | +1 | +1 |
| -0.2 | Round 10 | SPECTOR | 28 | 3♥ | ♠Q | -1 | -2 |
| -0.3 | Round 8 | MOSS | 2 | 1NT | ♥6 | +1 | +7 |
| -0.4 | Round 5 | ODDY | 23 | 5♦ | ♣A | -1 | +9 |
| -0.4 | Round 7 | LILIENSTEIN | 13 | 6♠ | ♣10 | = | +8 |
| -0.6 | Round 10 | SPECTOR | 29 | 3NT | ♣4 | = | -1 |
| -0.7 | Round 9 | FORMIDABLES | 19 | 3♦ | ♠2 | = | +0 |
| -0.8 | Round 10 | SPECTOR | 30 | 2♦ | ♠A | = | +0 |
| -1.0 | Round 5 | ODDY | 30 | 4♠ | ♦5 | +1 | -1 |
| -1.2 | Round 1 | CHAGAS | 1 | 2♠ | ♥J | +1 | +0 |
| -1.2 | Round 10 | SPECTOR | 24 | 6NT | ♠J | = | +0 |
| -1.3 | Round 6 | ANNA | 7 | 2♣ | ♥6 | +3 | +0 |
| -1.7 | Round 1 | CHAGAS | 4 | 5♦ | ♥8 | +1 | -10 |
| -1.8 | Round 9 | FORMIDABLES | 13 | 3NT | ♥9 | +2 | +0 |
| -1.9 | Round 6 | ANNA | 4 | 3♥ | ♦7 | -2 | +9 |
| -2.2 | Round 7 | LILIENSTEIN | 17 | 3♥ | ♣J | -1 | -4 |
| -2.3 | Round 3 | FROGS | 6 | 3NT | ♦2 | -1 | -5 |
| -2.5 | Round 1 | CHAGAS | 7 | 3NT | ♠5 | = | +0 |
| -2.6 | Round 4 | TEAM CANADA | 12 | 3♠ | ♣3 | -1 | -5 |
| -2.8 | Round 6 | ANNA | 8 | 1NT | ♥Q | +1 | -1 |
| -2.8 | Round 8 | MOSS | 4 | 2♥ | ♠9 | +1 | +0 |
| -2.9 | Round 5 | ODDY | 24 | 6♥ | ♠7 | = | +0 |
| -3.0 | Round 5 | ODDY | 27 | 3♣ | ♣7 | -2 | +1 |
| -3.0 | Round 9 | FORMIDABLES | 16 | 7♣x | ♦A | -4 | +0 |
| -3.0 | Round 9 | FORMIDABLES | 17 | 4♥ | ♠3 | +1 | +0 |
| -3.1 | Round 4 | TEAM CANADA | 20 | 2♥ | ♦Q | -1 | +0 |
| -3.4 | Round 5 | ODDY | 22 | 2♠ | ♥3 | -1 | -5 |
| -3.5 | Round 4 | TEAM CANADA | 16 | 2♠ | ♥A | -1 | -4 |
| -3.6 | Round 1 | CHAGAS | 6 | 3NT | ♠3 | +1 | +0 |
| -3.9 | Round 7 | LILIENSTEIN | 11 | 1NT | ♥4 | +1 | -6 |
| -4.0 | Round 1 | CHAGAS | 2 | 4♥ | ♥9 | -1 | -6 |
| -4.0 | Round 4 | TEAM CANADA | 19 | 4♥ | ♠A | -1 | -5 |
| -5.1 | Round 6 | ANNA | 2 | 5♦ | ♠2 | +1 | -3 |
| -5.9 | Round 9 | FORMIDABLES | 18 | 4♠ | ♥4 | -2 | -8 |
| -6.6 | Round 2 | BASEGGIO | 14 | 4♣x | ♥3 | -2 | -9 |
| -7.1 | Round 1 | CHAGAS | 8 | 5♥x | ♣A | -1 | -11 |
| -7.1 | Round 8 | MOSS | 7 | 3NT | ♣K | = | +0 |
| -8.7 | Round 3 | FROGS | 2 | 4♠ | ♣10 | = | -8 |
| -9.2 | Round 2 | BASEGGIO | 17 | 6♦ | ♠Q | -2 | -11 |
| -10.7 | Round 7 | LILIENSTEIN | 12 | 3NT | ♥4 | +1 | -11 |
| -12.4 | Round 1 | CHAGAS | 10 | 6♥ | ♠4 | -1 | -13 |
| -12.5 | Round 8 | MOSS | 5 | 3NT | ♥K | -3 | -14 |