🇵🇱 KOWALSKI Apolinary · POLAND

62rank
+1.4Butler · 224 bds
+0.01per board
±4.2swing
-0.17vs par /bd · #72/111
+0.03adjusted /bd
Butler per round: -11.6 -6.2 -9.8 -15.6 39.9 -4.3 -25 -11.7 -7 -2.2 4.1 1.5 15 34.3by round

vs par split: bidding -0.22 · play +0.17

Strength of schedule: opponents averaged +0.02/bd (an average draw) → opponent-adjusted +0.03/bd

Card play — on target: opening leads 80.0% #51 of 110 · declarer play 83.0% #14 of 111 · defence 88.8% #27 of 111

Card play by contract type — on target
vs NTvs a suit
Opening leads66.7% (12)85.7% (28)
Declarer play92.3% (13)80.0% (40)
Defence83.3% (30)91.2% (68)

Opening leads by suit led: ♠ 61.5% (13) · ♥ 88.9% (9) · ♦ 90.0% (10) · ♣ 87.5% (8)

vs par by strain: NT -1.22 (67) · a suit +0.29 (157)

vs par by level: part-score +0.07 (81) · game -0.23 (125) · slam -0.78 (18)

By role: declaring +0.27/bd (-2.15 vs par · 117) · defending -0.29/bd (+2.01 vs par · 107)

By vulnerability: vulnerable +0.14/bd (-0.41 vs par · 112) · not vulnerable -0.13/bd (+0.08 vs par · 112)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1J.RomanskiP.Gagne – L.SheridanOpen16-11.6-0.72+0.44
Round 2J.RomanskiF.Bigdeli – H.JanssensOpen16-6.2-0.39-2.69
Round 3J.RomanskiF.Dahl – G.NorrisOpen16-9.8-0.61-0.50
Round 4J.RomanskiS.Zeligman – P.RomikOpen16-15.6-0.97-2.81
Round 6J.RomanskiH.Humburg – G.MattssonClosed16+39.9+2.49+1.81
Round 7J.RomanskiA.Thompson – R.HarperClosed16-4.3-0.27+0.00
Round 9J.RomanskiP.Lowe – A.FarstadOpen16-25.0-1.56-0.50
Round 10J.RomanskiD.Liggat – R.BennettClosed16-11.7-0.73-1.56
Round 11J.RomanskiH.Gothe – E.GotheClosed16-7.0-0.44+0.56
Round 12J.RomanskiK.Aro – M.SirkiaOpen16-2.2-0.14-0.81
Round 14J.RomanskiF.Stretz – J.MeyerOpen16+4.1+0.26-1.00
Round 15J.RomanskiN.Doremans – J.TrouwborstClosed16+1.5+0.09+2.12
Round 17J.RomanskiS.Dowling – J.GoddenClosed16+15.0+0.94-1.06
Round 18J.RomanskiR.Tatxe – A.GraciaOpen16+34.3+2.14+3.69

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.

ButlerRoundOpponentsBdContractLeadResvs par
+10.2Round 17🇮🇪 IRELAND163NT♣Q+1+1
+9.9Round 6🇩🇪 GERMANY26♠♦8-1+17
+9.6Round 17🇮🇪 IRELAND143NT♦=+7
+9.3Round 18🇪🇸 SPAIN83NT♠8+2+8
+8.7Round 12🇫🇮 FINLAND104♥♦2-1+12
+8.7Round 18🇪🇸 SPAIN166♣♦K-2+13
+8.6Round 3🇩🇰 DENMARK22NT♥8+4+9
+8.3Round 6🇩🇪 GERMANY56♦♠Q=-2
+8.1Round 6🇩🇪 GERMANY134♠♥9-2+13
+7.5Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES153NT♥4-2+12
+7.5Round 12🇫🇮 FINLAND123NT♠3+1+4
+7.1Round 4🇮🇱 ISRAEL104♥♦4=+0
+7.1Round 14🇫🇷 FRANCE155♣♦=+0
+6.9Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND114♠♥K=+0
+6.8Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND132♠♦6+1+11
+6.7Round 6🇩🇪 GERMANY143NT♦8=+0
+6.7Round 14🇫🇷 FRANCE93♦♥5-2+8
+6.7Round 15🇳🇱 NETHERLANDS56♦♣Q=+13
+6.6Round 11🇸🇪 SWEDEN134♥♥2=+10
+6.3Round 14🇫🇷 FRANCE124♠♥Q+1+0
+5.9Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES12♥♣10=+6
+5.9Round 3🇩🇰 DENMARK94♠♠5=+8
+5.9Round 12🇫🇮 FINLAND91NT♦6-2+7
+5.8Round 9🇳🇴 NORWAY54♥♦6=-1
+5.7Round 17🇮🇪 IRELAND134♠♥J-1+12
+5.3Round 6🇩🇪 GERMANY44♥♥5=+0
+5.2Round 12🇫🇮 FINLAND153NT♠4+3-3
+5.1Round 11🇸🇪 SWEDEN152NT♠9+1+2
+4.9Round 4🇮🇱 ISRAEL52♠♥Q-3+0
+4.9Round 4🇮🇱 ISRAEL63NT♠7-4+11
+4.8Round 2🇧🇪 BELGIUM44♥♠-2+2
+4.8Round 18🇪🇸 SPAIN43♣♠9=+6
+4.4Round 11🇸🇪 SWEDEN93NT♥Q=+7
+4.4Round 18🇪🇸 SPAIN13NT♠9=+0
+4.3Round 2🇧🇪 BELGIUM94♠♥5+1+0
+4.3Round 9🇳🇴 NORWAY83NT♦Q-1+10
+4.0Round 3🇩🇰 DENMARK134♠♥7+1+1
+3.9Round 11🇸🇪 SWEDEN14♠♥7-2+6
+3.8Round 11🇸🇪 SWEDEN113♥♠4-2+5
+3.6Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND26NT♠J=+0
+3.4Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND94♠♥A+1+13
+3.4Round 18🇪🇸 SPAIN143♣♦A-2+0
+3.4Round 18🇪🇸 SPAIN154♠♣J+2+11
+3.3Round 6🇩🇪 GERMANY82♥♣K=+11
+3.3Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND76NT♠+1-13
+3.3Round 12🇫🇮 FINLAND43♥♥4+1+10
+3.3Round 18🇪🇸 SPAIN64♥♦A+1+1
+3.2Round 6🇩🇪 GERMANY156♥♠J=+10
+3.2Round 15🇳🇱 NETHERLANDS134♥♠+1+1
+3.1Round 9🇳🇴 NORWAY164♥♦A+1+0
+3.1Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND83♠♥A=+0
+3.1Round 17🇮🇪 IRELAND51♠♠J-1+4
+2.8Round 2🇧🇪 BELGIUM62♠♦4+1+1
+2.7Round 17🇮🇪 IRELAND74♥♣K+2+5
+2.6Round 2🇧🇪 BELGIUM72♠♣-2-9
+2.6Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND13♦♣8=+0
+2.6Round 15🇳🇱 NETHERLANDS14♠x♥5-1+8
+2.5Round 18🇪🇸 SPAIN73NT♥K=+0
+2.4Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES62♠♦9=+0
+2.4Round 6🇩🇪 GERMANY94♥♦Q-1+4
+2.4Round 12🇫🇮 FINLAND85♥♥9+1+1
+2.3Round 15🇳🇱 NETHERLANDS24♠♣3=+0
+2.3Round 15🇳🇱 NETHERLANDS44♠♥9-2+8
+2.2Round 2🇧🇪 BELGIUM154♠♥A-3+1
+2.2Round 4🇮🇱 ISRAEL12♥♥5+1+1
+2.2Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND103NT♠3-3+4
+2.2Round 18🇪🇸 SPAIN113NT♥6=+0
+2.1Round 9🇳🇴 NORWAY62♥♣K+2+1
+2.1Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND163♠♣J=+0
+2.1Round 14🇫🇷 FRANCE42♠♦3-1+0
+2.0Round 14🇫🇷 FRANCE24♠♣A+2+1
+1.9Round 3🇩🇰 DENMARK154♥♦K=+6
+1.9Round 9🇳🇴 NORWAY144♠♦A=+7
+1.7Round 18🇪🇸 SPAIN32NT♠J-1+5
+1.5Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND113♣♣3-1+4
+1.4Round 3🇩🇰 DENMARK44♠♦10+1+0
+1.4Round 11🇸🇪 SWEDEN163♣♠Q=+0
+1.3Round 6🇩🇪 GERMANY123♦♠5-1+0
+1.3Round 17🇮🇪 IRELAND24♥♠9-2-5
+1.3Round 18🇪🇸 SPAIN104♠♥7=+0
+1.2Round 6🇩🇪 GERMANY31NT♦2-1-2
+1.1Round 3🇩🇰 DENMARK54♠♦4=+0
+1.1Round 6🇩🇪 GERMANY63♠♦8=+1
+1.1Round 9🇳🇴 NORWAY93NT♥10-3+2
+1.1Round 11🇸🇪 SWEDEN144♥♣J=+0
+1.1Round 15🇳🇱 NETHERLANDS103NT♥6+1+12
+1.0Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES135♣♦Q=+9
+0.9Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES123NT♥6=-1
+0.9Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND73NT♠2+4-12
+0.8Round 14🇫🇷 FRANCE81NT♣6=+1
+0.7Round 2🇧🇪 BELGIUM146♣♠4+1+11
+0.7Round 4🇮🇱 ISRAEL44♥♦=-1
+0.7Round 11🇸🇪 SWEDEN51NT♦9=+0
+0.6Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES102♠♥Q+1-10
+0.6Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND144♥♠10=+0
+0.6Round 17🇮🇪 IRELAND123NT♥+3-12
+0.5Round 2🇧🇪 BELGIUM13♥♣A-1-2
+0.5Round 14🇫🇷 FRANCE104♠♣K=+0
+0.4Round 6🇩🇪 GERMANY101NT♥8-1-1
+0.4Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND83NT♠4+2+1
+0.4Round 15🇳🇱 NETHERLANDS33♦♠K=+0
+0.4Round 15🇳🇱 NETHERLANDS84♠♥A=+1
+0.4Round 15🇳🇱 NETHERLANDS162NT♠10=+0
+0.4Round 17🇮🇪 IRELAND83♣♦10-2-7
+0.4Round 17🇮🇪 IRELAND103NT♠5+3-12
+0.3Round 18🇪🇸 SPAIN22♦♣K+3+7
+0.2Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES111♠♦J+1-1
+0.2Round 4🇮🇱 ISRAEL133NT♥2=+2
+0.2Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND122NT♦=+7
-0.0Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES164♠♦2=+1
-0.1Round 3🇩🇰 DENMARK163NT♥3=+0
-0.1Round 18🇪🇸 SPAIN93♥♠10=+0
-0.2Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES83♥♠J+1-2
-0.2Round 2🇧🇪 BELGIUM114♥♣5=+1
-0.2Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND44♥♣3=-1
-0.2Round 12🇫🇮 FINLAND32♠♦Q+1+10
-0.3Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND33NT♣4+1+0
-0.3Round 17🇮🇪 IRELAND13♦♠4+1+7
-0.4Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES72♣♠J+1+0
-0.4Round 3🇩🇰 DENMARK33NT♥6+2+0
-0.4Round 4🇮🇱 ISRAEL153♠♠A=-6
-0.4Round 12🇫🇮 FINLAND52♠♠9+2-10
-0.4Round 14🇫🇷 FRANCE144♠x♠-1+5
-0.4Round 15🇳🇱 NETHERLANDS65♠♣6=+0
-0.4Round 17🇮🇪 IRELAND61NT♣10+1+1
-0.5Round 17🇮🇪 IRELAND42♠♠=+1
-0.6Round 9🇳🇴 NORWAY124♥♦A-1-5
-0.8Round 3🇩🇰 DENMARK123NT♠10-2+0
-0.8Round 15🇳🇱 NETHERLANDS113NT♣2+2-11
-0.9Round 6🇩🇪 GERMANY111NT♥4-1-3
-0.9Round 11🇸🇪 SWEDEN22♦♥A-3-5
-1.1Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES33♦♦3+1+0
-1.1Round 2🇧🇪 BELGIUM105♥♣A=+0
-1.1Round 4🇮🇱 ISRAEL71NT♣6=-11
-1.1Round 9🇳🇴 NORWAY154♠♥A=+0
-1.1Round 17🇮🇪 IRELAND32♠♠4+2-6
-1.1Round 17🇮🇪 IRELAND152♠♦K-1-1
-1.2Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND12♠♦9+1+0
-1.2Round 14🇫🇷 FRANCE131NT♦Q+1-10
-1.3Round 3🇩🇰 DENMARK73♥♠K-1+1
-1.3Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND164♥♣J+1+0
-1.3Round 11🇸🇪 SWEDEN44♣♠4=+10
-1.4Round 4🇮🇱 ISRAEL163NT♦Q+2+0
-1.4Round 12🇫🇮 FINLAND22♠♥Q-1-2
-1.4Round 14🇫🇷 FRANCE34♠♣4=+0
-1.5Round 9🇳🇴 NORWAY34♠♣9=-6
-1.5Round 9🇳🇴 NORWAY44♥♦8+1+0
-1.6Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND63NT♠3=+1
-1.7Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND63♥♦A+1-1
-1.7Round 11🇸🇪 SWEDEN123♦♥8-1+1
-1.7Round 14🇫🇷 FRANCE113NT♠9=-7
-1.7Round 15🇳🇱 NETHERLANDS122♠♥+1-1
-1.8Round 2🇧🇪 BELGIUM33NT♣Q+1+0
-1.8Round 2🇧🇪 BELGIUM133NT♣8+3-13
-1.8Round 4🇮🇱 ISRAEL122♥♣A-1-5
-1.8Round 14🇫🇷 FRANCE74♥♠7=+0
-1.9Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND53NT♠3+1-13
-1.9Round 18🇪🇸 SPAIN52♠♦10-1+0
-2.1Round 2🇧🇪 BELGIUM163NT♣2-1-5
-2.1Round 6🇩🇪 GERMANY73NT♣5+1-1
-2.2Round 6🇩🇪 GERMANY13NT♦K-2-6
-2.2Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND95♦♣K=+11
-2.2Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND154♥♦5=-11
-2.3Round 4🇮🇱 ISRAEL114♥♦K-1-4
-2.3Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND134♠♣K-1+3
-2.3Round 12🇫🇮 FINLAND135♥x♠K-2+4
-2.4Round 12🇫🇮 FINLAND164♥x♦K-1+0
-2.5Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND144♥♠A-1-5
-2.5Round 9🇳🇴 NORWAY103♦♣Q=+0
-2.6Round 3🇩🇰 DENMARK112NT♣A-2+0
-2.7Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND32♦♣K-2+0
-2.8Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND152♦♠A+2+0
-2.9Round 14🇫🇷 FRANCE13♣♠10=-5
-3.0Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND22NT♠Q=-1
-3.1Round 14🇫🇷 FRANCE63NT♥4-1-5
-3.1Round 15🇳🇱 NETHERLANDS72♥♣J+1+0
-3.2Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES43NT♣5=+0
-3.2Round 2🇧🇪 BELGIUM23NT♥-2-13
-3.2Round 11🇸🇪 SWEDEN32♠♣5=-5
-3.3Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES143♥♣5=+0
-3.3Round 3🇩🇰 DENMARK14♠♥3-1-5
-3.5Round 9🇳🇴 NORWAY14♠♥3=+1
-3.5Round 15🇳🇱 NETHERLANDS156♦♦-2-7
-3.6Round 2🇧🇪 BELGIUM124♥x♦A-1-9
-3.6Round 4🇮🇱 ISRAEL145♣♦K-2-5
-3.7Round 15🇳🇱 NETHERLANDS146♣♦=+11
-3.8Round 3🇩🇰 DENMARK83NT♠J-2-5
-3.8Round 4🇮🇱 ISRAEL23NT♥5=+0
-4.1Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND122♠♦Q-2+0
-4.1Round 14🇫🇷 FRANCE54♠x♦K=-5
-4.2Round 18🇪🇸 SPAIN122♠♥=-5
-4.3Round 11🇸🇪 SWEDEN83NT♠9-1-10
-4.3Round 12🇫🇮 FINLAND64♠♣A-1-10
-4.4Round 3🇩🇰 DENMARK104♥♦K=+1
-4.5Round 17🇮🇪 IRELAND93NT♣+1+0
-4.6Round 2🇧🇪 BELGIUM54♠♣A+1+0
-4.6Round 11🇸🇪 SWEDEN61NT♥5=+1
-4.7Round 15🇳🇱 NETHERLANDS92♥♦A+1-1
-4.8Round 9🇳🇴 NORWAY114♥♣6=+1
-4.8Round 14🇫🇷 FRANCE162♠♥10-2+1
-4.8Round 18🇪🇸 SPAIN136♥♠7=+13
-4.9Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES91NT♠6=+1
-4.9Round 12🇫🇮 FINLAND143♣♣J+3-13
-5.3Round 12🇫🇮 FINLAND114♥♠2=+0
-5.7Round 2🇧🇪 BELGIUM84♥♣Q-1-8
-6.1Round 6🇩🇪 GERMANY165♥♦A+1-12
-6.3Round 7🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND44♠x♥J-1+0
-6.4Round 3🇩🇰 DENMARK63NT♠A=-7
-6.4Round 9🇳🇴 NORWAY74♥♦K=+0
-6.6Round 12🇫🇮 FINLAND76♥♦8-1-13
-6.9Round 4🇮🇱 ISRAEL94♥x♦A-2-5
-6.9Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND106♥♦A-1-12
-7.0Round 4🇮🇱 ISRAEL34♥♣K-3-12
-7.1Round 11🇸🇪 SWEDEN72♠♥10+3-10
-7.3Round 4🇮🇱 ISRAEL84♠♣5-1-10
-7.4Round 12🇫🇮 FINLAND13NT♠6-1-10
-7.5Round 9🇳🇴 NORWAY23NT♥5+2-1
-8.1Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES56♦♠J=+2
-8.9Round 1🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES23NT♦A=-10
-9.6Round 3🇩🇰 DENMARK146♥♣J-1-17
-10.4Round 10🏴󠁧󠁢󠁳󠁣󠁴󠁿 SCOTLAND56♠♥4-1-11
-10.9Round 11🇸🇪 SWEDEN105♦♥A=-3
-11.1Round 17🇮🇪 IRELAND116♠x♥A-3-12
-13.9Round 9🇳🇴 NORWAY136♥♠3-1-17