🇵🇱 DUFRAT Katarzyna · POLAND

68rank
+11.9Butler · 224 bds
+0.05per board
±4.1swing
+0.02vs par /bd · #65/128
+0.04adjusted /bd
Butler per round: -10.2 -21 17.5 8.4 -8.8 5.4 22.7 12.3 -22.9 28.2 -28.2 -11.1 2.9 16.7by round

vs par split: bidding -0.10 · play +0.12

Strength of schedule: opponents averaged -0.02/bd (an average draw) → opponent-adjusted +0.04/bd

Card play — on target: opening leads 82.4% #37 of 128 · declarer play 76.2% #56 of 128 · defence 80.6% #97 of 128

Card play by contract type — on target
vs NTvs a suit
Opening leads53.8% (13)92.1% (38)
Declarer play68.2% (22)80.5% (41)
Defence77.8% (27)81.5% (81)

Opening leads by suit led: ♠ 40.0% (10) · ♥ 90.9% (11) · ♦ 89.5% (19) · ♣ 100.0% (11)

vs par by strain: NT -0.79 (62) · a suit +0.33 (162)

vs par by level: part-score +1.35 (76) · game -0.62 (136) · slam -1.17 (12)

By role: declaring +0.20/bd (-2.12 vs par · 116) · defending -0.11/bd (+2.32 vs par · 108)

By vulnerability: vulnerable -0.35/bd (-0.46 vs par · 112) · not vulnerable +0.45/bd (+0.51 vs par · 112)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1J.ZmudaC.Draper – F.BrownClosed16-10.2-0.64-0.12
Round 3J.ZmudaP.Liu – L.WuClosed16-21.0-1.31-0.94
Round 5J.ZmudaQ.Dossa – R.BokhariClosed16+17.5+1.09+1.56
Round 6J.ZmudaW.Van Zwol – C.ArnoldsOpen16+8.4+0.53+0.25
Round 7J.ZmudaM.Zur-Campanile – J.MeyersClosed16-8.8-0.55-0.62
Round 9J.ZmudaM.Sato – K.ShimamuraOpen16+5.4+0.34+0.44
Round 11J.ZmudaM.Gharbieh – H.SaketOpen16+22.7+1.42-1.19
Round 12J.ZmudaI.Brisebois – S.NystromClosed16+12.3+0.77+0.44
Round 13J.ZmudaN.Tache – A.DouerOpen16-22.9-1.43-2.06
Round 15J.ZmudaG.Poncioni – J.PachecoOpen16+28.2+1.76+4.62
Round 17J.ZmudaSHEN (1) Qi – W.WangClosed16-28.2-1.76+0.75
Round 18J.ZmudaC.Ferlazzo – G.ManaraOpen16-11.1-0.69-0.31
Round 19J.ZmudaJ.Ashberg – S.KaminerClosed16+2.9+0.18-3.00
Round 21J.ZmudaC.Gibbons – J.GibbonsClosed16+16.7+1.04+0.50

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 9🇯🇵 JAPAN66♥♦7-2+13
+10.1Round 15🇧🇷 BRAZIL31♠x♠A-3+9
+9.1Round 5🇵🇰 PAKISTAN16NT♠6-1+14
+9.0Round 13🇻🇪 VENEZUELA132♠♦8+1+13
+8.6Round 6🇳🇱 NETHERLANDS174♠♦A=+11
+8.5Round 11🇯🇴 JORDAN34♠♦4+1+0
+8.4Round 11🇯🇴 JORDAN53♥♦A-1+10
+7.9Round 15🇧🇷 BRAZIL162♣♣5+3+10
+7.7Round 15🇧🇷 BRAZIL125♠♦A-1+11
+7.5Round 3🇹🇼 CHINESE TAIPEI71♥♣K-2+15
+7.1Round 21🇳🇿 NEW ZEALAND73NT♥5-1+12
+7.0Round 9🇯🇵 JAPAN13NT♥5=+7
+6.9Round 12🇨🇦 CANADA306♠♥10-1+11
+6.3Round 21🇳🇿 NEW ZEALAND163NT♠8=+6
+6.2Round 21🇳🇿 NEW ZEALAND144♠♥A+2-11
+6.1Round 5🇵🇰 PAKISTAN34♥♣4-1-1
+6.1Round 12🇨🇦 CANADA253NT♥2-1-1
+5.6Round 15🇧🇷 BRAZIL103♥♠5-2+13
+5.5Round 5🇵🇰 PAKISTAN53NT♠3+1+11
+5.4Round 9🇯🇵 JAPAN162♥♦4-3+5
+5.4Round 18🇮🇹 ITALY274♥♦A+1+4
+5.1Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND163♠♠5=+0
+5.1Round 18🇮🇹 ITALY316♥♠A=+1
+4.9Round 6🇳🇱 NETHERLANDS254♠♣8-2+11
+4.9Round 18🇮🇹 ITALY213NT♦J-1+10
+4.8Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND26♥♣5=-13
+4.8Round 5🇵🇰 PAKISTAN113♥♦5=+6
+4.7Round 11🇯🇴 JORDAN114♥♣6+1+0
+4.6Round 6🇳🇱 NETHERLANDS274♠♦K=+0
+4.5Round 7🇺🇸 USA175♦♥3+1-13
+4.5Round 7🇺🇸 USA1134♥♦5=+0
+4.4Round 13🇻🇪 VENEZUELA83♦♠7-2+6
+4.4Round 19🇿🇦 SOUTH AFRICA122♦♠4=+8
+4.3Round 19🇿🇦 SOUTH AFRICA92♠♦5+1+0
+4.2Round 12🇨🇦 CANADA193NT♦Q-1+6
+4.1Round 11🇯🇴 JORDAN45♥♠3=+0
+4.0Round 12🇨🇦 CANADA234♠♣A-1+12
+3.8Round 7🇺🇸 USA1125♦♥K+1+3
+3.8Round 11🇯🇴 JORDAN93NT♠5+1+1
+3.8Round 15🇧🇷 BRAZIL114♠♦9+1+11
+3.7Round 12🇨🇦 CANADA214♠♣8=+0
+3.7Round 17🇨🇳 CHINA52♠♥6+2+6
+3.6Round 3🇹🇼 CHINESE TAIPEI92NT♠5=+0
+3.6Round 21🇳🇿 NEW ZEALAND64♣♦K-1+12
+3.5Round 5🇵🇰 PAKISTAN102♠♥A-1+5
+3.3Round 15🇧🇷 BRAZIL142♥♦9+1+7
+3.2Round 5🇵🇰 PAKISTAN93♠♣A-1+11
+3.2Round 6🇳🇱 NETHERLANDS183♥♣2=+1
+3.0Round 11🇯🇴 JORDAN72♣♣5-2+8
+2.7Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND63♥♦3-1+0
+2.7Round 19🇿🇦 SOUTH AFRICA83♦♥A+1+1
+2.5Round 5🇵🇰 PAKISTAN153NT♠6+2+0
+2.5Round 11🇯🇴 JORDAN65♠♣K=+0
+2.5Round 15🇧🇷 BRAZIL74♠♥2-2+8
+2.5Round 18🇮🇹 ITALY244♠♠Q-2+5
+2.5Round 21🇳🇿 NEW ZEALAND131NT♣2=+0
+2.4Round 9🇯🇵 JAPAN111NTx♥2=+1
+2.4Round 12🇨🇦 CANADA264♥♣K+1+0
+2.4Round 18🇮🇹 ITALY204♠♣5-1+6
+2.3Round 19🇿🇦 SOUTH AFRICA24♠♦7+1+0
+2.3Round 19🇿🇦 SOUTH AFRICA144♠♥4+3-14
+2.2Round 21🇳🇿 NEW ZEALAND12♠♣K=+5
+2.1Round 9🇯🇵 JAPAN34♠♦J=+0
+1.9Round 7🇺🇸 USA184♠♥8+1+0
+1.9Round 21🇳🇿 NEW ZEALAND23NT♥Q=-1
+1.8Round 5🇵🇰 PAKISTAN73♠♣A=+6
+1.8Round 7🇺🇸 USA133NT♦2+3-10
+1.8Round 17🇨🇳 CHINA84♠♣J+1+0
+1.7Round 5🇵🇰 PAKISTAN144♠x♥A-3-10
+1.7Round 6🇳🇱 NETHERLANDS213NT♥10=+3
+1.7Round 12🇨🇦 CANADA291NT♦5=-1
+1.6Round 7🇺🇸 USA152♥♠Q=+0
+1.6Round 13🇻🇪 VENEZUELA143♥♣A-1+5
+1.5Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND104♥♦3+3+17
+1.5Round 12🇨🇦 CANADA223NT♦10+2+2
+1.5Round 19🇿🇦 SOUTH AFRICA33NT♦2+4-10
+1.4Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND93NT♣K=+13
+1.4Round 9🇯🇵 JAPAN51NT♥5=+5
+1.4Round 9🇯🇵 JAPAN133NT♣5=-1
+1.4Round 12🇨🇦 CANADA184♠♦J-2+5
+1.4Round 17🇨🇳 CHINA24♥♦8=+3
+1.3Round 3🇹🇼 CHINESE TAIPEI152♠x♣A-2-1
+1.3Round 15🇧🇷 BRAZIL82♥♦J-3+1
+1.2Round 21🇳🇿 NEW ZEALAND113♥♦A=+1
+1.1Round 19🇿🇦 SOUTH AFRICA164♥♣K+1+1
+1.0Round 7🇺🇸 USA1143NT♠5+3+10
+1.0Round 11🇯🇴 JORDAN12♠♥8+1+0
+1.0Round 13🇻🇪 VENEZUELA164♥♠9+2+1
+0.9Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND84♠♣2+1+0
+0.9Round 6🇳🇱 NETHERLANDS303NT♣5+1+1
+0.9Round 7🇺🇸 USA124♦♣7-1-2
+0.9Round 15🇧🇷 BRAZIL14♠♥A-1-2
+0.9Round 17🇨🇳 CHINA14♥♦9+1+0
+0.9Round 18🇮🇹 ITALY304♥♣6-1+5
+0.9Round 18🇮🇹 ITALY321NT♦6-3-3
+0.9Round 21🇳🇿 NEW ZEALAND43NT♠5=+0
+0.8Round 7🇺🇸 USA162♣♣10-1-1
+0.7Round 3🇹🇼 CHINESE TAIPEI81NT♥2+1+1
+0.7Round 9🇯🇵 JAPAN23NT♣8-2+5
+0.7Round 13🇻🇪 VENEZUELA74♠♦7+1+1
+0.6Round 5🇵🇰 PAKISTAN124♥♥7-2-1
+0.6Round 9🇯🇵 JAPAN72♥♣Q+1+0
+0.6Round 13🇻🇪 VENEZUELA54♠♣A+1+0
+0.6Round 19🇿🇦 SOUTH AFRICA64♥♦Q=-1
+0.5Round 19🇿🇦 SOUTH AFRICA104♥♣9+1+0
+0.4Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND33NT♠K+1-1
+0.4Round 12🇨🇦 CANADA283♦♥A-2+0
+0.4Round 13🇻🇪 VENEZUELA14♠♥K=-1
+0.4Round 15🇧🇷 BRAZIL66♠♥Q+1+13
+0.3Round 3🇹🇼 CHINESE TAIPEI14♣♠9-1-2
+0.3Round 11🇯🇴 JORDAN24♠♦K+1-13
+0.3Round 21🇳🇿 NEW ZEALAND53NT♥10+1+1
+0.2Round 21🇳🇿 NEW ZEALAND153NT♠J-1-5
+0.1Round 6🇳🇱 NETHERLANDS283♥♠J+1-10
+0.1Round 13🇻🇪 VENEZUELA104♥♠6+1+0
+0.0Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND54♥♦K+1+0
+0.0Round 3🇹🇼 CHINESE TAIPEI64♥♠A=+0
-0.0Round 9🇯🇵 JAPAN143♦♠Q=+0
-0.0Round 17🇨🇳 CHINA62♠♣K-2+9
+0.0Round 18🇮🇹 ITALY193NT♥3+1+0
-0.1Round 5🇵🇰 PAKISTAN42♥♣5+1+0
-0.1Round 5🇵🇰 PAKISTAN134♥♦3=+0
-0.1Round 13🇻🇪 VENEZUELA154♥♥5+2-13
-0.2Round 19🇿🇦 SOUTH AFRICA13♣♦J=+0
-0.2Round 19🇿🇦 SOUTH AFRICA153NT♠5+2-12
-0.3Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND43NT♠5+1-1
-0.3Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND153♦♦9-2-1
-0.3Round 5🇵🇰 PAKISTAN82♦♣8=+0
-0.3Round 17🇨🇳 CHINA103NT♦5+1-1
-0.4Round 3🇹🇼 CHINESE TAIPEI24♠♥3+2+11
-0.4Round 11🇯🇴 JORDAN153♣♠A+1+0
-0.4Round 11🇯🇴 JORDAN163NT♣2+1-1
-0.5Round 7🇺🇸 USA1163♥♠8+1+1
-0.6Round 11🇯🇴 JORDAN82♠♥2+3-6
-0.6Round 17🇨🇳 CHINA114♠♥2=+0
-0.7Round 3🇹🇼 CHINESE TAIPEI31NT♦A=+1
-0.7Round 6🇳🇱 NETHERLANDS292♠♣6+1+0
-0.7Round 13🇻🇪 VENEZUELA23♠♠3+1-8
-0.7Round 18🇮🇹 ITALY254♠♦4+2+1
-0.8Round 6🇳🇱 NETHERLANDS265♥x♦K-2-4
-0.8Round 15🇧🇷 BRAZIL45♣♠K-1+3
-0.9Round 3🇹🇼 CHINESE TAIPEI111♣♦Q+2+7
-0.9Round 6🇳🇱 NETHERLANDS203♣♦J+1+0
-0.9Round 6🇳🇱 NETHERLANDS223♠♥2+1+1
-0.9Round 11🇯🇴 JORDAN142♠♥10+2-6
-0.9Round 12🇨🇦 CANADA173NT♠5+2-1
-1.0Round 6🇳🇱 NETHERLANDS241NT♥J-2+0
-1.0Round 9🇯🇵 JAPAN154♥♦A+1-10
-1.0Round 17🇨🇳 CHINA73NT♦3+2-1
-1.1Round 12🇨🇦 CANADA243NT♥5-2-6
-1.4Round 11🇯🇴 JORDAN105♠♦J-1+3
-1.5Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND132♥♣J+2-1
-1.5Round 19🇿🇦 SOUTH AFRICA73♣♥9+1+0
-1.6Round 15🇧🇷 BRAZIL91NT♣5-1+2
-1.9Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND143NT♠4=+0
-2.0Round 3🇹🇼 CHINESE TAIPEI53NT♠Q-1-12
-2.0Round 15🇧🇷 BRAZIL54♠♠10-1-6
-2.1Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND124♠♦K-1-6
-2.1Round 11🇯🇴 JORDAN131NT♣5=-5
-2.1Round 21🇳🇿 NEW ZEALAND84♥♠7=+1
-2.2Round 5🇵🇰 PAKISTAN24♥♠9+2+11
-2.2Round 6🇳🇱 NETHERLANDS233NT♥4-1-6
-2.2Round 13🇻🇪 VENEZUELA92♥♥6-1-1
-2.2Round 15🇧🇷 BRAZIL22♠♦4-2+5
-2.2Round 21🇳🇿 NEW ZEALAND93♠♥8=+0
-2.3Round 9🇯🇵 JAPAN84♠x♦5-1-6
-2.3Round 19🇿🇦 SOUTH AFRICA42♠♣5+1+0
-2.3Round 19🇿🇦 SOUTH AFRICA52♥♥9=+0
-2.3Round 21🇳🇿 NEW ZEALAND126♠♦6=+0
-2.6Round 6🇳🇱 NETHERLANDS313♥♣K-1+0
-2.6Round 12🇨🇦 CANADA324♥♦5=-3
-2.7Round 3🇹🇼 CHINESE TAIPEI44♠♥Q+1-4
-2.7Round 7🇺🇸 USA1155♦♥Q=+2
-2.7Round 9🇯🇵 JAPAN44♠♦J+1+0
-2.7Round 9🇯🇵 JAPAN93NT♠4+1-1
-2.8Round 12🇨🇦 CANADA315♥x♦5-2-5
-3.0Round 17🇨🇳 CHINA143NT♦A+1+0
-3.0Round 17🇨🇳 CHINA154♠♦2=+0
-3.0Round 21🇳🇿 NEW ZEALAND103NT♦Q+1+1
-3.1Round 12🇨🇦 CANADA204♥♣A+1-4
-3.1Round 18🇮🇹 ITALY282NT♠8-1-5
-3.2Round 6🇳🇱 NETHERLANDS195♦♠9=+2
-3.2Round 7🇺🇸 USA193NT♠7+3+12
-3.3Round 6🇳🇱 NETHERLANDS323♣♥A=-6
-3.3Round 17🇨🇳 CHINA134♣♥A=-7
-3.4Round 15🇧🇷 BRAZIL134♥♦6-1+1
-3.4Round 18🇮🇹 ITALY224♥♠K+2+3
-3.6Round 18🇮🇹 ITALY293♦♥A-1-5
-3.7Round 19🇿🇦 SOUTH AFRICA113NT♠10-2-11
-3.8Round 7🇺🇸 USA145♦♠Q=+13
-3.8Round 17🇨🇳 CHINA44♠x♥A-1+0
-4.0Round 13🇻🇪 VENEZUELA121♦♠6+3-1
-4.1Round 3🇹🇼 CHINESE TAIPEI163♠♥Q-3-12
-4.1Round 17🇨🇳 CHINA95♦♥A=+13
-4.2Round 3🇹🇼 CHINESE TAIPEI135♠♦A+1+3
-4.7Round 7🇺🇸 USA1114♠♦A=-7
-4.8Round 18🇮🇹 ITALY174♠♥A=+0
-4.9Round 3🇹🇼 CHINESE TAIPEI124♠♥K-2-7
-5.0Round 18🇮🇹 ITALY184♠♦6=-7
-5.1Round 17🇨🇳 CHINA123NT♠Q-1-12
-5.2Round 7🇺🇸 USA114♠x♦A-1-5
-5.3Round 15🇧🇷 BRAZIL156♦♣3-1-12
-5.9Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND116♥♠4=+0
-5.9Round 17🇨🇳 CHINA33NT♥J=+1
-5.9Round 17🇨🇳 CHINA163NT♠2=+1
-6.1Round 18🇮🇹 ITALY265♦♠Q-2-8
-6.1Round 21🇳🇿 NEW ZEALAND36♥♣Q-1-14
-6.3Round 9🇯🇵 JAPAN104♥♥2=+1
-6.4Round 3🇹🇼 CHINESE TAIPEI104♠♣A-2-8
-6.5Round 18🇮🇹 ITALY233NT♥A-1-12
-6.6Round 13🇻🇪 VENEZUELA114♥♣K-1-11
-6.6Round 19🇿🇦 SOUTH AFRICA133NT♠5+1-10
-7.1Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND13NT♣6=-6
-7.8Round 11🇯🇴 JORDAN123♦♠10+1-10
-7.9Round 1🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND73NT♠2+3-3
-7.9Round 13🇻🇪 VENEZUELA64♠♠6+1-4
-8.0Round 13🇻🇪 VENEZUELA34♠♦A=-8
-8.1Round 3🇹🇼 CHINESE TAIPEI144♠♦7=-7
-8.4Round 5🇵🇰 PAKISTAN166♥♣J-2-14
-9.5Round 7🇺🇸 USA1103NT♣Q-1-13
-9.5Round 12🇨🇦 CANADA275♣♠K-1-8
-10.2Round 5🇵🇰 PAKISTAN66♠♣8-1-13
-10.8Round 9🇯🇵 JAPAN123NT♠2-1-12
-11.2Round 13🇻🇪 VENEZUELA43NT♦5-1-12