🇵🇱 MAZURKIEWICZ Marcin · POLAND

29rank
+88.8Butler · 240 bds
+0.37per board
±4.3swing
+0.53vs par /bd · #14/127
+0.24adjusted /bd
Butler per round: 5.6 -17.3 29.3 -1.4 -22.2 0 -0.8 -2.2 13.1 -5.5 10.2 25 22.7 -17.2 49.5by round

vs par split: bidding +0.11 · play +0.36

Strength of schedule: opponents averaged -0.13/bd (an easy draw) → opponent-adjusted +0.24/bd

Card play — on target: opening leads 73.9% #105 of 127 · declarer play 81.2% #32 of 127 · defence 89.5% #35 of 127

Card play by contract type — on target
vs NTvs a suit
Opening leads55.2% (29)82.5% (63)
Declarer play80.0% (10)81.8% (22)
Defence89.2% (37)89.7% (87)

Opening leads by suit led: ♠ 88.9% (18) · ♥ 76.7% (30) · ♦ 66.7% (21) · ♣ 65.2% (23)

vs par by strain: NT +0.30 (71) · a suit +0.63 (169)

vs par by level: part-score +1.16 (77) · game -0.01 (150) · slam +3.08 (13)

By role: declaring +0.54/bd (-2.11 vs par · 115) · defending +0.22/bd (+2.97 vs par · 125)

By vulnerability: vulnerable +0.40/bd (-0.36 vs par · 120) · not vulnerable +0.34/bd (+1.43 vs par · 120)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1K.JassemR.Stephens – H.FickOpen16+5.6+0.35-0.56
Round 2K.JassemA.Bach – M.CornellOpen16-17.3-1.08-1.19
Round 3K.JassemR.Sadashiv – H.SumarOpen16+29.3+1.83+1.62
Round 4K.JassemS.Sun – M.KangOpen16-1.4-0.09-0.56
Round 5K.JassemD.Chen – K.FurutaOpen16-22.2-1.39-1.06
Round 6K.JassemD.Gerin – J.PelletierOpen16+0.0+0.00-0.31
Round 7K.JassemF.Combescure – J.RombautOpen16-0.8-0.05-1.00
Round 8K.JassemC.Pellegrini – R.Garcia Da RosaOpen16-2.2-0.14+1.81
Round 9K.JassemA.Banerjee – R.RoyOpen16+13.1+0.82+1.62
Round 10K.JassemF.Nystrom – J.UpmarkOpen16-5.5-0.34-2.75
Round 11K.JassemL.Milne – A.GriffithsOpen16+10.2+0.64+3.38
Round 13K.JassemG.Tan – K.FongOpen16+25.0+1.56+2.00
Round 17K.JassemD.Wolpert – D.KorbelOpen16+22.7+1.42-0.50
Round 18K.JassemT.Sadek – K.NabilOpen16-17.2-1.07-0.69
Round 19K.JassemM.Ghanem – S.BarakatOpen16+49.5+3.09+6.19

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
+15.7Round 19🇯🇴 JORDAN153♠x♥5-3+19
+12.5Round 17🇨🇦 CANADA103NT♦5-1+13
+12.0Round 7🇫🇷 FRANCE96♦x♣K-1+17
+11.4Round 3🇦🇪 UNITED ARAB EMIRATES76♣x♥J=+5
+11.3Round 8🇦🇷 ARGENTINA326♣♠10-1+17
+11.2Round 4🇨🇳 CHINA294♠♣A=+9
+10.8Round 8🇦🇷 ARGENTINA175♠x♣3-5+12
+10.3Round 6🇬🇵 GUADELOUPE196♠x♦A-4+4
+10.1Round 6🇬🇵 GUADELOUPE242♥x♥J-3+9
+9.2Round 19🇯🇴 JORDAN106♥♠10-1+13
+9.0Round 3🇦🇪 UNITED ARAB EMIRATES135♠x♦A+1+6
+8.5Round 18🇪🇬 EGYPT235♣x♥A=+4
+8.1Round 19🇯🇴 JORDAN73NT♦4-2+8
+7.6Round 13🇸🇬 SINGAPORE144♠♦9=+7
+7.1Round 17🇨🇦 CANADA124♥♦2-1+12
+7.0Round 1🇿🇦 SOUTH AFRICA73NT♠5+2+2
+7.0Round 19🇯🇴 JORDAN133NT♥2=+9
+6.5Round 11🇦🇺 AUSTRALIA66♠♣K-1+11
+6.5Round 13🇸🇬 SINGAPORE64♠♠2=+3
+6.5Round 17🇨🇦 CANADA163NT♠2+2+1
+6.1Round 1🇿🇦 SOUTH AFRICA24NT♠3+1+17
+6.1Round 3🇦🇪 UNITED ARAB EMIRATES124♠♣J-3+9
+6.0Round 7🇫🇷 FRANCE63NT♥K-3+4
+5.9Round 17🇨🇦 CANADA24♠x♥K-1+9
+5.7Round 13🇸🇬 SINGAPORE23♦♠A=+12
+5.6Round 9🇮🇳 INDIA23♦♣10+1+1
+5.4Round 19🇯🇴 JORDAN14♥♣4=+8
+5.3Round 5🇯🇵 JAPAN42♠♠2-3+4
+5.3Round 9🇮🇳 INDIA81NT♠Q+1+6
+5.2Round 1🇿🇦 SOUTH AFRICA116♥♠9=+0
+5.1Round 9🇮🇳 INDIA52♥♠A-2+3
+5.0Round 2🇳🇿 NEW ZEALAND263NT♥2+1-1
+5.0Round 19🇯🇴 JORDAN53NT♥6-2+7
+4.8Round 7🇫🇷 FRANCE15♦x♠A=+6
+4.7Round 2🇳🇿 NEW ZEALAND215♣♠A=+3
+4.7Round 8🇦🇷 ARGENTINA283NT♦10+3-13
+4.5Round 17🇨🇦 CANADA95♦♥2=-13
+4.4Round 4🇨🇳 CHINA323NT♥4-2+8
+4.2Round 5🇯🇵 JAPAN123♠♥2-5+3
+4.1Round 10🇸🇪 SWEDEN294♥♠Q-1+6
+4.1Round 13🇸🇬 SINGAPORE91NT♦J-1+1
+4.1Round 13🇸🇬 SINGAPORE134♥♠K=+0
+4.0Round 13🇸🇬 SINGAPORE122♥♠8=+0
+3.8Round 11🇦🇺 AUSTRALIA82♠♣2=+7
+3.7Round 11🇦🇺 AUSTRALIA113♥♦J+1+7
+3.5Round 1🇿🇦 SOUTH AFRICA143NT♠Q+1+1
+3.5Round 19🇯🇴 JORDAN82♠♦A=+5
+3.4Round 9🇮🇳 INDIA32♠♦K+2+6
+3.3Round 9🇮🇳 INDIA13NT♥6-1+5
+3.3Round 19🇯🇴 JORDAN124♠♣K+1+1
+3.0Round 4🇨🇳 CHINA264♠♦Q-2+8
+3.0Round 17🇨🇦 CANADA134♣♥K=+7
+3.0Round 18🇪🇬 EGYPT316♦♠A=-1
+2.8Round 3🇦🇪 UNITED ARAB EMIRATES114♠♥7=+0
+2.6Round 2🇳🇿 NEW ZEALAND305♣♥A-1+4
+2.6Round 10🇸🇪 SWEDEN284NT♠K+2+1
+2.6Round 11🇦🇺 AUSTRALIA53NT♦4+1+0
+2.4Round 5🇯🇵 JAPAN82♥♠A-1+4
+2.4Round 8🇦🇷 ARGENTINA203♦♥5-1+5
+2.4Round 11🇦🇺 AUSTRALIA131NT♣5=+5
+2.4Round 18🇪🇬 EGYPT184♠♦6-1+5
+2.4Round 19🇯🇴 JORDAN43♠♦3+1-1
+2.2Round 8🇦🇷 ARGENTINA232♥♣J-2+9
+2.1Round 2🇳🇿 NEW ZEALAND272♥♣2=+1
+2.1Round 3🇦🇪 UNITED ARAB EMIRATES165♦♠4+1+11
+2.0Round 2🇳🇿 NEW ZEALAND174♥♠7-1+4
+2.0Round 3🇦🇪 UNITED ARAB EMIRATES92NT♥Q-1+5
+2.0Round 10🇸🇪 SWEDEN272♠♥A-1+4
+1.9Round 6🇬🇵 GUADELOUPE174♠♦A-1-2
+1.9Round 7🇫🇷 FRANCE53♦♣2=+0
+1.9Round 7🇫🇷 FRANCE75♦♥K+1-13
+1.9Round 11🇦🇺 AUSTRALIA72♣♦K=-1
+1.8Round 9🇮🇳 INDIA64♥♦8+1+0
+1.8Round 11🇦🇺 AUSTRALIA141♠♥10+3+6
+1.7Round 3🇦🇪 UNITED ARAB EMIRATES44♠♦9+1+4
+1.7Round 3🇦🇪 UNITED ARAB EMIRATES81NT♥2+3+1
+1.7Round 4🇨🇳 CHINA183♠♣K+1+6
+1.6Round 8🇦🇷 ARGENTINA194♥♠10+2+13
+1.6Round 10🇸🇪 SWEDEN233♦♦2+1+0
+1.5Round 6🇬🇵 GUADELOUPE203♣♣6+1+0
+1.5Round 18🇪🇬 EGYPT304♥♣6-1+5
+1.4Round 4🇨🇳 CHINA283NT♥2+2+2
+1.4Round 6🇬🇵 GUADELOUPE233NT♥A-1+6
+1.3Round 9🇮🇳 INDIA163♦♠J-1+4
+1.3Round 10🇸🇪 SWEDEN301NT♠2-2-1
+1.3Round 13🇸🇬 SINGAPORE82NT♣A+2+2
+1.3Round 17🇨🇦 CANADA14♥♣J=+1
+1.1Round 1🇿🇦 SOUTH AFRICA152♥♦8=+1
+1.1Round 10🇸🇪 SWEDEN211NT♥2+3+6
+1.1Round 17🇨🇦 CANADA54♠♥2=+0
+1.0Round 1🇿🇦 SOUTH AFRICA84♠♥10=+1
+1.0Round 7🇫🇷 FRANCE24♦♣6-1-2
+1.0Round 10🇸🇪 SWEDEN204♠♦Q-1-13
+1.0Round 17🇨🇦 CANADA34♥x♠K-3-3
+1.0Round 18🇪🇬 EGYPT275♠♣A-6+0
+0.8Round 4🇨🇳 CHINA252♥♠J+1+0
+0.8Round 5🇯🇵 JAPAN134♥♣2+1+1
+0.8Round 13🇸🇬 SINGAPORE154♥♥2+1+13
+0.7Round 3🇦🇪 UNITED ARAB EMIRATES24♠♣4+2-11
+0.7Round 7🇫🇷 FRANCE33NT♦2+2-10
+0.6Round 1🇿🇦 SOUTH AFRICA43NT♠5+1+1
+0.6Round 6🇬🇵 GUADELOUPE303NT♣5+2+0
+0.6Round 8🇦🇷 ARGENTINA313NT♥10+2+1
+0.5Round 1🇿🇦 SOUTH AFRICA132♥♣J+1+0
+0.5Round 2🇳🇿 NEW ZEALAND313NT♣2+2+10
+0.5Round 7🇫🇷 FRANCE84♠♦7=-1
+0.5Round 11🇦🇺 AUSTRALIA24♠♦K+1+13
+0.4Round 4🇨🇳 CHINA205♥♠2+2-17
+0.4Round 5🇯🇵 JAPAN153NT♦2=-2
+0.4Round 13🇸🇬 SINGAPORE164♥♣K+1+0
+0.4Round 18🇪🇬 EGYPT193NT♥2+1+0
+0.3Round 3🇦🇪 UNITED ARAB EMIRATES153NT♠9+1-1
+0.3Round 4🇨🇳 CHINA192♠♠2+1+0
+0.3Round 17🇨🇦 CANADA73NT♥4+1+0
+0.2Round 1🇿🇦 SOUTH AFRICA54♥♣J+1+0
+0.2Round 3🇦🇪 UNITED ARAB EMIRATES64♥♣A=+0
+0.2Round 3🇦🇪 UNITED ARAB EMIRATES143NT♣6-1-5
+0.2Round 6🇬🇵 GUADELOUPE265♥x♠3-2+4
+0.2Round 6🇬🇵 GUADELOUPE293♠♣5=+0
+0.2Round 13🇸🇬 SINGAPORE104♥♠2+1+0
+0.2Round 18🇪🇬 EGYPT225♥♠K+1+3
+0.2Round 18🇪🇬 EGYPT242♠♣6-1+4
+0.1Round 7🇫🇷 FRANCE144NT♦8+2+10
+0.1Round 10🇸🇪 SWEDEN313NT♣2=+2
+0.1Round 13🇸🇬 SINGAPORE14♠♥K+1+0
+0.1Round 18🇪🇬 EGYPT254♠♦2+3+2
+0.0Round 5🇯🇵 JAPAN74♣♠A-1+5
-0.0Round 5🇯🇵 JAPAN145♥♠A+1-11
+0.0Round 6🇬🇵 GUADELOUPE213NT♥9=-3
-0.0Round 9🇮🇳 INDIA143♦♠Q=+0
-0.0Round 11🇦🇺 AUSTRALIA35♠x♦5-1+11
+0.0Round 19🇯🇴 JORDAN34♠♥8+1+11
-0.0Round 19🇯🇴 JORDAN144♠♥4+3+14
-0.1Round 2🇳🇿 NEW ZEALAND321NT♦3+2-6
-0.2Round 8🇦🇷 ARGENTINA304♥♣A+1+0
-0.2Round 9🇮🇳 INDIA72♥♣Q=+1
-0.2Round 13🇸🇬 SINGAPORE33♠♠2=-4
-0.3Round 5🇯🇵 JAPAN25♥♦8=+11
-0.3Round 7🇫🇷 FRANCE45♦♠Q=+13
-0.3Round 11🇦🇺 AUSTRALIA152♣♦7+1-1
-0.3Round 13🇸🇬 SINGAPORE43NT♦J+1-1
-0.3Round 19🇯🇴 JORDAN112♠♥K-2+8
-0.4Round 8🇦🇷 ARGENTINA221NT♠2+2+10
-0.4Round 19🇯🇴 JORDAN64♥♣8=+1
-0.5Round 9🇮🇳 INDIA111NT♥6+2+0
-0.5Round 17🇨🇦 CANADA62♠♥9-2-9
-0.6Round 4🇨🇳 CHINA215♣♠2=+0
-0.6Round 9🇮🇳 INDIA155♥♠9=+10
-0.6Round 10🇸🇪 SWEDEN253♦♣6-1-5
-0.6Round 17🇨🇦 CANADA44♠♥A-1-3
-0.7Round 1🇿🇦 SOUTH AFRICA93NT♣K=-13
-0.7Round 4🇨🇳 CHINA314♥♦A-3-8
-0.7Round 11🇦🇺 AUSTRALIA14♠♥8-1+5
-0.9Round 4🇨🇳 CHINA221NT♣6=+1
-0.9Round 9🇮🇳 INDIA93NT♥2=+0
-1.0Round 2🇳🇿 NEW ZEALAND184♥♣J=-13
-1.0Round 2🇳🇿 NEW ZEALAND294♠♥A+2-12
-1.0Round 5🇯🇵 JAPAN164♥♣J+1-11
-1.0Round 6🇬🇵 GUADELOUPE254♠♦A-1-9
-1.0Round 10🇸🇪 SWEDEN245♠♦2+1-8
-1.0Round 10🇸🇪 SWEDEN326NT♥Q+1-11
-1.1Round 1🇿🇦 SOUTH AFRICA33NT♠2+2+0
-1.1Round 7🇫🇷 FRANCE153NT♥Q=+2
-1.1Round 8🇦🇷 ARGENTINA294♥♣2=-1
-1.2Round 2🇳🇿 NEW ZEALAND254♠♣J=+0
-1.2Round 3🇦🇪 UNITED ARAB EMIRATES12♠♥10+1-1
-1.2Round 17🇨🇦 CANADA83NT♥2+1+1
-1.3Round 3🇦🇪 UNITED ARAB EMIRATES104♣♠8-2-2
-1.3Round 9🇮🇳 INDIA44♠♦J=-1
-1.3Round 9🇮🇳 INDIA123NT♥5=+0
-1.3Round 11🇦🇺 AUSTRALIA164NT♥5+1+0
-1.4Round 13🇸🇬 SINGAPORE54♠♣A=-1
-1.6Round 7🇫🇷 FRANCE163♥♥A=+0
-1.7Round 1🇿🇦 SOUTH AFRICA162♥♣9-1+5
-1.7Round 10🇸🇪 SWEDEN263NT♥2-2-8
-1.9Round 19🇯🇴 JORDAN24♠♣6=+1
-1.9Round 19🇯🇴 JORDAN165♥♣A=-1
-2.0Round 10🇸🇪 SWEDEN222♠♥6=+0
-2.1Round 11🇦🇺 AUSTRALIA44♥♠6=+1
-2.1Round 11🇦🇺 AUSTRALIA93NT♥5=+0
-2.2Round 3🇦🇪 UNITED ARAB EMIRATES53♥♣A-1+10
-2.3Round 2🇳🇿 NEW ZEALAND193NT♦10=+0
-2.3Round 4🇨🇳 CHINA303NT♥Q+1+0
-2.3Round 5🇯🇵 JAPAN102♣♠7-2-3
-2.3Round 6🇬🇵 GUADELOUPE323♣♥A-1+0
-2.4Round 13🇸🇬 SINGAPORE75♠♦9=-1
-2.4Round 18🇪🇬 EGYPT293♣♥A-1-5
-2.5Round 5🇯🇵 JAPAN13NT♦6+2+11
-2.5Round 5🇯🇵 JAPAN112NT♦9=+0
-2.5Round 6🇬🇵 GUADELOUPE183♥♣2=-1
-2.5Round 8🇦🇷 ARGENTINA262♠♠2-1+1
-2.5Round 9🇮🇳 INDIA133NT♥A=+1
-2.6Round 1🇿🇦 SOUTH AFRICA64♥♦3-1+0
-2.6Round 5🇯🇵 JAPAN65♠♦A=-8
-3.0Round 11🇦🇺 AUSTRALIA123NT♥6+1-1
-3.1Round 18🇪🇬 EGYPT321NT♦J-2-5
-3.3Round 17🇨🇦 CANADA152♠♦3+2-6
-3.4Round 4🇨🇳 CHINA277♥♦8=+0
-3.5Round 1🇿🇦 SOUTH AFRICA14♥♣Q-2-6
-3.5Round 4🇨🇳 CHINA243NT♦7=+1
-3.5Round 8🇦🇷 ARGENTINA215♣♥2=+0
-3.5Round 11🇦🇺 AUSTRALIA105♣x♠8-1-9
-3.6Round 2🇳🇿 NEW ZEALAND235♦♥A=+0
-3.8Round 8🇦🇷 ARGENTINA244♥♣Q=-3
-3.8Round 10🇸🇪 SWEDEN193NT♣2=+1
-3.9Round 8🇦🇷 ARGENTINA273♣♠2+1-7
-3.9Round 10🇸🇪 SWEDEN184♠♣2-1-12
-4.0Round 6🇬🇵 GUADELOUPE313♥♣K=-6
-4.0Round 18🇪🇬 EGYPT263NT♠Q-1-6
-4.1Round 2🇳🇿 NEW ZEALAND283♠♠K+1-1
-4.2Round 3🇦🇪 UNITED ARAB EMIRATES31NT♣3=-5
-4.6Round 18🇪🇬 EGYPT174♠♥A=+0
-4.6Round 18🇪🇬 EGYPT213NT♦J=+0
-4.7Round 1🇿🇦 SOUTH AFRICA104♥♠4+2-17
-4.7Round 6🇬🇵 GUADELOUPE274♠♣A=+0
-4.8Round 2🇳🇿 NEW ZEALAND226♣x♥A-1-7
-5.0Round 7🇫🇷 FRANCE125♠x♥2-1-9
-5.0Round 18🇪🇬 EGYPT283NT♠2-2-7
-5.3Round 1🇿🇦 SOUTH AFRICA122♠♣8+2-1
-5.3Round 10🇸🇪 SWEDEN171NT♥2+2-6
-5.4Round 2🇳🇿 NEW ZEALAND243♦♥7+1-1
-5.4Round 6🇬🇵 GUADELOUPE224♠♣9=-7
-5.4Round 9🇮🇳 INDIA103♥♣6+2-10
-5.5Round 13🇸🇬 SINGAPORE114♥♣K=+1
-5.6Round 19🇯🇴 JORDAN93NT♠8-3-4
-5.7Round 7🇫🇷 FRANCE114♠♣J=-7
-6.2Round 4🇨🇳 CHINA173NT♥Q+3-11
-6.3Round 6🇬🇵 GUADELOUPE284♥♠J=+0
-6.5Round 17🇨🇦 CANADA142♦x♣6-1-8
-7.0Round 4🇨🇳 CHINA234♠♦2-2-8
-7.3Round 8🇦🇷 ARGENTINA183♥♦K+2-7
-7.6Round 5🇯🇵 JAPAN94♥♠Q=+0
-7.6Round 7🇫🇷 FRANCE105♠♦8-1-13
-8.0Round 5🇯🇵 JAPAN53NT♥6-2-8
-8.4Round 7🇫🇷 FRANCE134♥♦5-2-13
-8.4Round 17🇨🇦 CANADA114♥♣A-1-10
-8.5Round 5🇯🇵 JAPAN33NT♠7+2-13
-10.7Round 2🇳🇿 NEW ZEALAND206♥♣3=+0
-10.8Round 18🇪🇬 EGYPT204♠♦6=-10
-13.1Round 8🇦🇷 ARGENTINA256♠♥4=-8