🇵🇱 ROMANSKI Jacek · POLAND

5rank
+168.7Butler · 228 bds
+0.74per board
±4.3swing
+0.50vs par /bd · #25/137
+0.77adjusted /bd
Butler per round: 22 19.1 27.3 -20.6 4.3 -3.6 43.6 -2.2 19.9 -16.7 -7.1 6.4 4.5 38.2 31.4 4.7 0.3 -17.6 14.8by round

vs par split: bidding -0.31 · play +0.80

Strength of schedule: opponents averaged +0.03/bd (an average draw) → opponent-adjusted +0.77/bd

Card play — on target: opening leads 75.7% #130 of 137 · declarer play 79.7% #37 of 137 · defence 92.4% #11 of 137

Card play by contract type — on target
vs NTvs a suit
Opening leads73.9% (23)76.5% (51)
Declarer play64.7% (17)85.1% (47)
Defence84.4% (32)95.9% (73)

Opening leads by suit led: ♠ 85.7% (21) · ♥ 73.7% (19) · ♦ 92.3% (13) · ♣ 57.1% (21)

vs par by strain: NT +0.81 (68) · a suit +0.36 (160)

vs par by level: part-score +0.74 (77) · game +0.17 (132) · slam +1.79 (19)

By role: declaring +1.11/bd (-1.43 vs par · 123) · defending +0.31/bd (+2.75 vs par · 105)

By vulnerability: vulnerable +0.46/bd (+0.47 vs par · 114) · not vulnerable +1.02/bd (+0.53 vs par · 114)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1A.KowalskiZ.Mahmood – J.MeckstrothOpen12+22.0+1.83-1.00
Round 2A.KowalskiL.Cartner – G.PalmerOpen12+19.1+1.59+2.50
Round 4A.KowalskiM.Ades – E.PaganiOpen12+27.3+2.27+2.33
Round 6A.KowalskiA.Askalani – A.WahdanOpen12-20.6-1.72+1.42
Round 7A.KowalskiM.Ohashi – M.HirataOpen12+4.3+0.36+1.00
Round 8A.KowalskiG.Chagas – E.BarcellosOpen12-3.6-0.30-0.92
Round 9A.KowalskiJ.Shah – A.GoelOpen12+43.6+3.63+4.67
Round 10A.KowalskiJ.Ostberg – P.EliassonOpen12-2.2-0.18-1.92
Round 12A.KowalskiL.Vecchi – B.ManciniOpen12+19.9+1.66+1.83
Round 13A.KowalskiY.Levit – A.KaminskiOpen12-16.7-1.39-2.75
Round 14A.KowalskiH.Maesel – R.MaeselOpen12-7.1-0.59+0.67
Round 15A.KowalskiJ.Hansen – S.SchouOpen12+6.4+0.53+2.42
Round 17A.KowalskiJ.Silver – J.CarruthersOpen12+4.5+0.38-0.17
Round 18A.KowalskiP.Collins – D.KendrickOpen12+38.2+3.18+2.50
Round 19A.KowalskiB.Engel – C.DaehrOpen12+31.4+2.62+2.42
Round 20A.KowalskiM.Shen – X.ShenOpen12+4.7+0.39-1.00
Round 21A.KowalskiL.Mendoza Contreras – M.Negrin FernandezOpen12+0.3+0.02-1.92
Round 22A.KowalskiM.Ince – N.KoktenOpen12-17.6-1.47-2.67
Round 23A.KowalskiP.Guillaumin – J.PalauOpen12+14.8+1.23+0.00

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.

ButlerRoundOpponentsBdContractLeadResvs par
+12.6Round 18🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND136♠♣6-2+13
+11.7Round 9🇮🇳 INDIA63NT♦6-1+13
+11.6Round 18🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND196♦♣10=+0
+11.3Round 9🇮🇳 INDIA76♣♠6-1+20
+10.6Round 12🇮🇹 ITALY183NT♣3+2+8
+10.3Round 1🇺🇸 USA105♠x♥K-4+14
+10.0Round 4🇲🇽 MEXICO176♥♣J=+0
+9.5Round 17🇨🇦 CANADA104♠♣Q=+10
+9.4Round 23🇫🇷 FRANCE86♦♥8=+12
+9.1Round 4🇲🇽 MEXICO164♠♥2-2+11
+8.7Round 13🇮🇱 ISRAEL123NT♦6-1+10
+8.7Round 19🇩🇪 GERMANY114♠♥Q=+7
+8.7Round 21🇪🇸 SPAIN124♥♦2=+13
+8.4Round 7🇯🇵 JAPAN123NT♠4+3+14
+8.3Round 2🇳🇿 NEW ZEALAND204♠♥K-2+17
+8.1Round 21🇪🇸 SPAIN104♥♥2=+10
+7.7Round 19🇩🇪 GERMANY34♦♥4=+6
+7.6Round 15🇩🇰 DENMARK126♦♥K-2+14
+7.5Round 9🇮🇳 INDIA124♥♠2=+13
+7.4Round 18🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND176NT♠7-1+14
+6.8Round 14🇳🇴 NORWAY144♥♠A=+11
+6.8Round 20🇨🇳 CHINA223NT♥Q-2+11
+6.6Round 10🇸🇪 SWEDEN215♥♣J-2+2
+6.1Round 8🇧🇷 BRAZIL173NT♠J+2+2
+6.0Round 4🇲🇽 MEXICO204♥♠2-2+2
+6.0Round 23🇫🇷 FRANCE94♥♣A=+0
+5.6Round 23🇫🇷 FRANCE114♥♦A=+0
+5.5Round 12🇮🇹 ITALY131NTx♣7-1+7
+5.5Round 17🇨🇦 CANADA27♥♦2=+0
+5.4Round 9🇮🇳 INDIA93NT♥4=+0
+5.3Round 1🇺🇸 USA16♣♠6+1-11
+5.2Round 8🇧🇷 BRAZIL214♥♦4+1+0
+5.1Round 19🇩🇪 GERMANY43♥♥4-1+6
+5.0Round 9🇮🇳 INDIA112♠♥J-2+5
+5.0Round 10🇸🇪 SWEDEN243♥♦10+1+7
+5.0Round 12🇮🇹 ITALY214♠♣6+1+1
+5.0Round 23🇫🇷 FRANCE62♥♣8+1+10
+4.8Round 18🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND141NT♠K-1+13
+4.7Round 6🇪🇬 EGYPT144♥♣10+2+11
+4.6Round 9🇮🇳 INDIA23♦♠6=+6
+4.5Round 2🇳🇿 NEW ZEALAND133NT♥Q-1+1
+4.5Round 19🇩🇪 GERMANY83♠♣A=+1
+4.4Round 9🇮🇳 INDIA54♠♦A=+11
+4.4Round 12🇮🇹 ITALY174♠♦9-1+10
+4.4Round 20🇨🇳 CHINA135♣♦4+1+0
+4.3Round 1🇺🇸 USA46♠♦K=+0
+4.2Round 1🇺🇸 USA125♣x♦A-2+5
+4.0Round 19🇩🇪 GERMANY73♣♥A=+0
+3.8Round 7🇯🇵 JAPAN52♠♦A=+1
+3.8Round 8🇧🇷 BRAZIL163♣x♣3-1-1
+3.6Round 14🇳🇴 NORWAY232♠♥K=+6
+3.4Round 14🇳🇴 NORWAY184♥♠5-2+7
+3.3Round 4🇲🇽 MEXICO222♦♥4+2+7
+3.3Round 15🇩🇰 DENMARK43♣♠4-1-5
+3.3Round 21🇪🇸 SPAIN33NT♦3=-1
+3.2Round 8🇧🇷 BRAZIL244♠♥3=+0
+3.2Round 22🇹🇷 TURKEY202NT♣K-1+6
+3.1Round 8🇧🇷 BRAZIL132NT♥10+1+1
+3.1Round 13🇮🇱 ISRAEL15♣♠5+1+11
+3.0Round 6🇪🇬 EGYPT163NT♦6-2+5
+2.8Round 17🇨🇦 CANADA111NT♠6+1+6
+2.8Round 18🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND215♥x♠3-3+4
+2.7Round 4🇲🇽 MEXICO133NT♥6-3+10
+2.7Round 14🇳🇴 NORWAY222♥♣A+1+1
+2.7Round 15🇩🇰 DENMARK23NT♥6=+0
+2.7Round 22🇹🇷 TURKEY162♠♦2=+0
+2.6Round 7🇯🇵 JAPAN113♣♠7=-5
+2.5Round 1🇺🇸 USA34♠♣J+1-10
+2.5Round 2🇳🇿 NEW ZEALAND244♥♣8=+8
+2.4Round 17🇨🇦 CANADA85♣♥A-1+5
+2.4Round 18🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND185♥♦8=+0
+2.3Round 2🇳🇿 NEW ZEALAND172♠♥3=+0
+2.2Round 12🇮🇹 ITALY231NT♥10+3+1
+2.1Round 1🇺🇸 USA86♣♠K+1-10
+2.1Round 18🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND234♣♥J=+0
+2.0Round 23🇫🇷 FRANCE44♠♥10-2+8
+1.9Round 2🇳🇿 NEW ZEALAND165♥♠A-1+10
+1.9Round 9🇮🇳 INDIA13♦♣10-1+4
+1.8Round 19🇩🇪 GERMANY94♠♣A=+0
+1.7Round 12🇮🇹 ITALY223NT♣9=+0
+1.7Round 13🇮🇱 ISRAEL23NT♠2+1+0
+1.7Round 19🇩🇪 GERMANY121NT♠A-2+6
+1.6Round 1🇺🇸 USA53NT♣8+3+11
+1.5Round 2🇳🇿 NEW ZEALAND183NT♥4+2+0
+1.5Round 15🇩🇰 DENMARK113NT♠6+1+11
+1.5Round 20🇨🇳 CHINA173NT♣K=-11
+1.5Round 22🇹🇷 TURKEY173NT♣2+1+0
+1.4Round 12🇮🇹 ITALY163♦♣7-1+4
+1.3Round 13🇮🇱 ISRAEL84♠♦A=+0
+1.3Round 15🇩🇰 DENMARK74♥♠K+1+0
+1.3Round 20🇨🇳 CHINA166NT♥8=+0
+1.3Round 20🇨🇳 CHINA182♠♣7=-1
+1.3Round 21🇪🇸 SPAIN83♥♦7=+0
+1.1Round 10🇸🇪 SWEDEN191NT♠2=+0
+1.1Round 20🇨🇳 CHINA214♥♠J-1+12
+1.0Round 12🇮🇹 ITALY242♠♦10-2+7
+1.0Round 18🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND204♠♣Q+1-13
+1.0Round 19🇩🇪 GERMANY103♣♥Q-1+6
+1.0Round 22🇹🇷 TURKEY133♦♠10=+0
+0.9Round 13🇮🇱 ISRAEL52♥♦Q+3-9
+0.7Round 7🇯🇵 JAPAN14♠♥2+1+0
+0.7Round 23🇫🇷 FRANCE32♠♠3+1+0
+0.6Round 4🇲🇽 MEXICO194♥♦Q+1+8
+0.6Round 10🇸🇪 SWEDEN152♠♦J+1+0
+0.6Round 20🇨🇳 CHINA243NT♠5=+0
+0.5Round 2🇳🇿 NEW ZEALAND212♠♦3+1+1
+0.5Round 4🇲🇽 MEXICO142NT♠2=-5
+0.5Round 7🇯🇵 JAPAN92♠♥4+1+0
+0.5Round 8🇧🇷 BRAZIL142NT♦J-1+4
+0.5Round 10🇸🇪 SWEDEN183♠♥5-1-1
+0.4Round 9🇮🇳 INDIA32NT♦7+1+8
+0.4Round 17🇨🇦 CANADA95♣x♠A-2+0
+0.4Round 21🇪🇸 SPAIN74♠♣3=+1
+0.3Round 6🇪🇬 EGYPT183♣♥6-1+0
+0.3Round 7🇯🇵 JAPAN22NT♥5=+0
+0.2Round 10🇸🇪 SWEDEN172♥♥K+1+7
+0.2Round 17🇨🇦 CANADA71NT♣5-1+0
+0.2Round 18🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND222♥♣3=-1
+0.2Round 21🇪🇸 SPAIN114♠♦Q=+3
+0.1Round 2🇳🇿 NEW ZEALAND153NT♠6+1+0
+0.1Round 4🇲🇽 MEXICO212♥♦K-2+0
+0.1Round 12🇮🇹 ITALY144♠♦8+1+0
+0.1Round 17🇨🇦 CANADA124♠♥7+1+0
-0.0Round 6🇪🇬 EGYPT153NT♥J+1+0
-0.0Round 21🇪🇸 SPAIN64♠♥2+1+0
-0.0Round 22🇹🇷 TURKEY143NT♠7+2+0
-0.1Round 2🇳🇿 NEW ZEALAND143NT♦2+1-1
-0.1Round 4🇲🇽 MEXICO183NT♥3+1-1
-0.1Round 6🇪🇬 EGYPT243NT♦9+2+0
-0.1Round 14🇳🇴 NORWAY204♥♦K+1+4
-0.1Round 18🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND152♥♣8+1-7
-0.1Round 23🇫🇷 FRANCE13NT♠3+1-1
-0.2Round 1🇺🇸 USA71NT♠10=-2
-0.3Round 1🇺🇸 USA114♠x♥A-2-4
-0.3Round 19🇩🇪 GERMANY14♥♦K=+1
-0.4Round 8🇧🇷 BRAZIL194♥♣J+1+11
-0.4Round 13🇮🇱 ISRAEL64♥♦Q=-1
-0.4Round 14🇳🇴 NORWAY192♦♣7+1-1
-0.4Round 19🇩🇪 GERMANY64♥♠K-1-5
-0.5Round 2🇳🇿 NEW ZEALAND234♥♠6=-1
-0.5Round 4🇲🇽 MEXICO234♥♥4+3-2
-0.5Round 10🇸🇪 SWEDEN204♠♣6+1+0
-0.5Round 15🇩🇰 DENMARK104♠♥J+1+0
-0.6Round 18🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND166♥x♠K-2+7
-0.7Round 6🇪🇬 EGYPT204♠♣2+2-13
-0.7Round 9🇮🇳 INDIA44♠♣J+1+0
-0.7Round 15🇩🇰 DENMARK12NT♦A-2+1
-0.7Round 15🇩🇰 DENMARK93♣♥4-2+9
-0.7Round 17🇨🇦 CANADA53NT♥7+1-11
-0.7Round 21🇪🇸 SPAIN54♠♥4=-1
-0.8Round 1🇺🇸 USA93NT♠4+2+0
-0.8Round 13🇮🇱 ISRAEL114♥♦7+1+0
-0.8Round 14🇳🇴 NORWAY213NT♠9+1+12
-0.9Round 2🇳🇿 NEW ZEALAND194♥♣5=+0
-1.0Round 2🇳🇿 NEW ZEALAND224♥♣Q-1-5
-1.0Round 4🇲🇽 MEXICO244♣♠2-1-2
-1.0Round 7🇯🇵 JAPAN84♠♦A+1+0
-1.0Round 8🇧🇷 BRAZIL222♠♦3+1+0
-1.0Round 12🇮🇹 ITALY151NT♠4+3-6
-1.0Round 14🇳🇴 NORWAY163NT♣6+1-7
-1.0Round 15🇩🇰 DENMARK62♥♠A-1-1
-1.1Round 1🇺🇸 USA61NT♦4=+2
-1.1Round 19🇩🇪 GERMANY23♦♠2=+1
-1.1Round 23🇫🇷 FRANCE72♠♣7=+0
-1.2Round 20🇨🇳 CHINA143NT♦10+3-11
-1.3Round 7🇯🇵 JAPAN64♥♣2=+1
-1.3Round 7🇯🇵 JAPAN102♦♦4+2+10
-1.3Round 19🇩🇪 GERMANY52♥♥4+1+0
-1.3Round 22🇹🇷 TURKEY184♥♦4+2-11
-1.3Round 22🇹🇷 TURKEY193♥♦2-2-11
-1.4Round 7🇯🇵 JAPAN74♠♣Q=+1
-1.4Round 22🇹🇷 TURKEY223NT♠2+2-1
-1.5Round 14🇳🇴 NORWAY243NT♠Q+4-2
-1.5Round 15🇩🇰 DENMARK52♥♥5=+1
-1.5Round 20🇨🇳 CHINA194♠♥9-3+3
-1.5Round 21🇪🇸 SPAIN14♥♠A=-8
-1.6Round 6🇪🇬 EGYPT173NT♥2+1+0
-1.6Round 13🇮🇱 ISRAEL35♥♠A-1-8
-1.6Round 15🇩🇰 DENMARK84♠x♥A-2+5
-1.7Round 10🇸🇪 SWEDEN233♥♦10-1-5
-1.7Round 22🇹🇷 TURKEY243NT♥Q=+1
-1.8Round 23🇫🇷 FRANCE26♣♠K=-13
-2.1Round 10🇸🇪 SWEDEN134♠x♥Q-2-14
-2.2Round 12🇮🇹 ITALY194♠♦A=+0
-2.4Round 8🇧🇷 BRAZIL152♥♦3=+0
-2.4Round 14🇳🇴 NORWAY174♠♦3+1+4
-2.4Round 20🇨🇳 CHINA203♦♦J-1-5
-2.6Round 9🇮🇳 INDIA83NT♥5-3-7
-2.7Round 13🇮🇱 ISRAEL104♥♠Q+2-12
-2.8Round 17🇨🇦 CANADA16♠♣A+1+11
-2.8Round 23🇫🇷 FRANCE102♦♥5=-5
-2.9Round 7🇯🇵 JAPAN33NT♦5-3-7
-2.9Round 23🇫🇷 FRANCE51NT♠2-1-3
-3.0Round 10🇸🇪 SWEDEN225♣♥8+1-13
-3.3Round 6🇪🇬 EGYPT195♥♦J=+0
-3.4Round 4🇲🇽 MEXICO154♠♣A+1+0
-3.4Round 20🇨🇳 CHINA233NT♣Q+1+0
-3.7Round 17🇨🇦 CANADA42NT♠5-1-5
-3.7Round 22🇹🇷 TURKEY153NT♠9=-3
-3.8Round 13🇮🇱 ISRAEL93NT♣5-1-5
-3.8Round 20🇨🇳 CHINA154♠♥J=-10
-3.9Round 6🇪🇬 EGYPT134♦♠9=+0
-4.0Round 15🇩🇰 DENMARK32♠♣5=-6
-4.0Round 21🇪🇸 SPAIN24♥♦3+2-13
-4.1Round 7🇯🇵 JAPAN42♠♦4-2-3
-4.1Round 17🇨🇦 CANADA32♥♣J=-6
-4.2Round 10🇸🇪 SWEDEN143NT♥Q-2-6
-4.4Round 6🇪🇬 EGYPT222♦♥8=+1
-4.7Round 10🇸🇪 SWEDEN164♠♦K+1+0
-4.8Round 22🇹🇷 TURKEY213♠♥10=-1
-5.1Round 17🇨🇦 CANADA64♥♦2-1-12
-5.2Round 23🇫🇷 FRANCE122NT♥5-2-8
-5.3Round 9🇮🇳 INDIA104♥♣4+2-17
-5.4Round 8🇧🇷 BRAZIL184♥♣3+3-14
-5.7Round 6🇪🇬 EGYPT213NT♠6+1+0
-5.8Round 8🇧🇷 BRAZIL234♠♣10=+1
-5.9Round 1🇺🇸 USA23NT♣6=-7
-6.0Round 18🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND243NT♥A+1+0
-6.7Round 14🇳🇴 NORWAY155♠x♣A-2-10
-6.7Round 21🇪🇸 SPAIN45♠♥Q-1-13
-8.8Round 12🇮🇹 ITALY204♠♣8=-10
-8.8Round 21🇪🇸 SPAIN96♥♠3-1-14
-8.9Round 6🇪🇬 EGYPT236♣♦9+1+13
-10.2Round 13🇮🇱 ISRAEL73NTx♠2-2-12
-10.5Round 8🇧🇷 BRAZIL206♠x♣8=-15
-10.7Round 14🇳🇴 NORWAY135♠♣J+2-17
-11.8Round 22🇹🇷 TURKEY235♦x♦K=-12
-12.9Round 13🇮🇱 ISRAEL46♦♠A=-7