🇵🇱 MAZURKIEWICZ Marcin · POLAND

69rank
-32.1Butler · 144 bds
-0.22per board
±4.6swing
+0.08vs par /bd · #51/103
-0.39adjusted /bd
Butler per round: 36 3.5 -3.2 8.7 -19.8 -20.7 -17.8 -22.6 3.8by round

vs par split: bidding -0.33 · play +0.41

Strength of schedule: opponents averaged -0.16/bd (an easy draw) → opponent-adjusted -0.39/bd

Card play — on target: opening leads 70.5% #91 of 103 · declarer play 75.8% #28 of 103 · defence 94.3% #7 of 103

Card play by contract type — on target
vs NTvs a suit
Opening leads53.8% (13)77.4% (31)
Declarer play83.3% (6)74.1% (27)
Defence88.0% (25)97.8% (45)

Opening leads by suit led: ♠ 62.5% (8) · ♥ 58.8% (17) · ♦ 100.0% (8) · ♣ 72.7% (11)

vs par by strain: NT +0.72 (40) · a suit -0.17 (104)

vs par by level: part-score +0.38 (50) · game -0.36 (86) · slam +2.88 (8)

By role: declaring -0.77/bd (-2.53 vs par · 74) · defending +0.35/bd (+2.83 vs par · 70)

By vulnerability: vulnerable -0.34/bd (+0.25 vs par · 72) · not vulnerable -0.11/bd (-0.10 vs par · 72)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1K.JassemD.Bilde – M.BildeOpen16+36.0+2.25+3.06
Round 3K.JassemD.Padon – A.BirmanOpen16+3.5+0.22-1.00
Round 5K.JassemA.Kaludercic – F.MasicOpen16-3.2-0.20-1.31
Round 6K.JassemB.Abou Chanab – M.SasselliOpen16+8.7+0.54+1.25
Round 8K.JassemP.Shields – F.KurbalijaOpen16-19.8-1.24-1.94
Round 9K.JassemI.Rotaru – O.GhigheciOpen16-20.7-1.29+1.25
Round 10K.JassemD.Parezanin – M.PerisicOpen16-17.8-1.11-1.50
Round 12K.JassemP.Caputo – G.Van MiddelemOpen16-22.6-1.41-0.81
Round 15K.JassemM.Budrys – A.MichailovasOpen16+3.8+0.24+1.69

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
+12.3Round 1🇩🇰 DENMARK176♠♥8-1+14
+9.6Round 1🇩🇰 DENMARK285♥x♦A-1+7
+9.5Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES33NT♠3+3+9
+9.5Round 12🇧🇪 BELGIUM283NT♥A-2+11
+7.9Round 1🇩🇰 DENMARK274♠♣T=+3
+7.5Round 15🇱🇹 LITHUANIA144♥♥10=+7
+7.1Round 5BOSNIA HERZEGOVINA193NT♠2-1+12
+6.6Round 3🇮🇱 ISRAEL236♠♥7+1+1
+6.6Round 6🇨🇭 SWITZERLAND56NT♥7-2+17
+6.1Round 3🇮🇱 ISRAEL251NT♥3=+6
+5.9Round 15🇱🇹 LITHUANIA95♥x♠8+1+7
+5.8Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES22♠♦A+1+8
+5.7Round 12🇧🇪 BELGIUM214♥♣4-3+0
+5.6Round 1🇩🇰 DENMARK294♥♣A-1+6
+5.2Round 3🇮🇱 ISRAEL205♥x♠J-3+4
+5.2Round 5BOSNIA HERZEGOVINA185♦x♦A-2+5
+5.1Round 6🇨🇭 SWITZERLAND73♥♥5+2+10
+4.8Round 5BOSNIA HERZEGOVINA302♣♦J+1+5
+4.4Round 3🇮🇱 ISRAEL215♥x♠A-1+7
+4.4Round 15🇱🇹 LITHUANIA154♠x♥6-3+0
+4.3Round 5BOSNIA HERZEGOVINA224♥♣7=+0
+4.2Round 1🇩🇰 DENMARK215♦x♠4=+3
+4.2Round 5BOSNIA HERZEGOVINA271NT♠2+2+6
+4.2Round 10🇷🇸 SERBIA45♥♣A-1+7
+3.8Round 1🇩🇰 DENMARK223NT♥Q+2+11
+3.5Round 9🇷🇴 ROMANIA246♦♦A-1+8
+3.5Round 9🇷🇴 ROMANIA293NT♥J-2+7
+3.4Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES93NT♦4-2+6
+3.3Round 6🇨🇭 SWITZERLAND24♥♦A=+0
+3.3Round 12🇧🇪 BELGIUM273♠♦Q=+6
+3.2Round 6🇨🇭 SWITZERLAND123♣♠3+2+1
+2.8Round 3🇮🇱 ISRAEL193NT♥9+2+0
+2.8Round 10🇷🇸 SERBIA103♣♦A+1+1
+2.7Round 10🇷🇸 SERBIA65♦♥10=+15
+2.5Round 3🇮🇱 ISRAEL293NT♣J=+0
+2.5Round 6🇨🇭 SWITZERLAND91NT♥5-2+5
+2.4Round 5BOSNIA HERZEGOVINA214♠♥Q+1+0
+2.4Round 9🇷🇴 ROMANIA253♥♣A+1+6
+2.4Round 15🇱🇹 LITHUANIA24♥♠9-1+10
+2.3Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES124♥♦4+2+1
+2.2Round 1🇩🇰 DENMARK254♠♦A=+3
+2.2Round 6🇨🇭 SWITZERLAND104♠♥10-1+12
+2.2Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES63NT♥5+2+0
+2.2Round 10🇷🇸 SERBIA115♦♥4-1+5
+2.1Round 1🇩🇰 DENMARK265♠♣8-1+7
+2.1Round 6🇨🇭 SWITZERLAND112♥♠2+2-4
+2.1Round 10🇷🇸 SERBIA11NT♥J-3+2
+1.9Round 6🇨🇭 SWITZERLAND11♠x♥K=+2
+1.9Round 12🇧🇪 BELGIUM244♠♦A=+0
+1.8Round 15🇱🇹 LITHUANIA122♥♣6-1-1
+1.5Round 5BOSNIA HERZEGOVINA315♣♠A=+3
+1.4Round 10🇷🇸 SERBIA84♦♠K-1+8
+1.2Round 12🇧🇪 BELGIUM231NT♠2+2+10
+1.2Round 15🇱🇹 LITHUANIA162♥♠J+1+10
+1.1Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES75♦♥K=+0
+1.1Round 10🇷🇸 SERBIA24♥♠J+1+0
+1.0Round 12🇧🇪 BELGIUM263NT♠J+2+1
+0.9Round 3🇮🇱 ISRAEL282♦♣4=+1
+0.9Round 15🇱🇹 LITHUANIA104♥♣K+1+1
+0.8Round 6🇨🇭 SWITZERLAND132♥♦3=+0
+0.8Round 15🇱🇹 LITHUANIA62♣♣2+2+0
+0.8Round 15🇱🇹 LITHUANIA84♥♣Q+1+0
+0.6Round 3🇮🇱 ISRAEL263NT♥T+1+0
+0.6Round 15🇱🇹 LITHUANIA45♥♠A=+2
+0.5Round 1🇩🇰 DENMARK204♥♠K=-1
+0.5Round 3🇮🇱 ISRAEL324♠♠5+1-11
+0.5Round 6🇨🇭 SWITZERLAND144♠♣5-1+5
+0.4Round 1🇩🇰 DENMARK303NT♥2+1+0
+0.4Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES113♠♥10-2+1
+0.2Round 12🇧🇪 BELGIUM184♥♣2+1+0
+0.1Round 6🇨🇭 SWITZERLAND41NT♣3-1+0
+0.1Round 10🇷🇸 SERBIA143♦♣7-1-4
-0.0Round 9🇷🇴 ROMANIA264♥♦2+1+0
-0.0Round 10🇷🇸 SERBIA34♠♣6+1+0
-0.1Round 10🇷🇸 SERBIA52♥♦K+1-7
-0.2Round 1🇩🇰 DENMARK314♥♠2=+0
-0.2Round 5BOSNIA HERZEGOVINA263NT♥9+2-1
-0.2Round 9🇷🇴 ROMANIA191NT♣3-1-2
-0.3Round 1🇩🇰 DENMARK243NT♥3+1+0
-0.3Round 6🇨🇭 SWITZERLAND63NT♠K+1+0
-0.3Round 15🇱🇹 LITHUANIA134♠♠2+1-1
-0.4Round 1🇩🇰 DENMARK184♠♦A=+0
-0.4Round 9🇷🇴 ROMANIA172♠♣5=-1
-0.6Round 5BOSNIA HERZEGOVINA203♦♥6=+1
-0.6Round 15🇱🇹 LITHUANIA51NT♦7-1-3
-0.7Round 1🇩🇰 DENMARK324♥♠Q-1+5
-0.7Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES162♠♦A=+0
-0.8Round 3🇮🇱 ISRAEL223♥♠Q=+0
-0.8Round 9🇷🇴 ROMANIA272NT♣A-1+5
-0.8Round 9🇷🇴 ROMANIA282♠♥3-2+1
-0.9Round 10🇷🇸 SERBIA163NT♣3-1-5
-1.1Round 3🇮🇱 ISRAEL274♠♥J=-1
-1.2Round 9🇷🇴 ROMANIA183NT♠7=+0
-1.2Round 9🇷🇴 ROMANIA313♠♠6=+10
-1.4Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES82♠♣9-2+0
-1.5Round 3🇮🇱 ISRAEL303♦♠6-1-4
-1.5Round 5BOSNIA HERZEGOVINA174♠♥8=-11
-1.5Round 5BOSNIA HERZEGOVINA244♠♣2=+1
-1.5Round 12🇧🇪 BELGIUM173♠♣A-2+8
-1.6Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES141♠♥4=+1
-1.7Round 12🇧🇪 BELGIUM253NT♥7+3-2
-2.1Round 9🇷🇴 ROMANIA304♥♠A-1-4
-2.3Round 3🇮🇱 ISRAEL183NT♠5=+2
-2.7Round 5BOSNIA HERZEGOVINA234♥♣7+2-9
-2.7Round 10🇷🇸 SERBIA122♠♦8+2-6
-2.8Round 9🇷🇴 ROMANIA221NT♦5+2+6
-3.1Round 15🇱🇹 LITHUANIA33♥♠9=-1
-3.3Round 5BOSNIA HERZEGOVINA321NT♥2=-5
-3.4Round 9🇷🇴 ROMANIA204♠♣K-1-6
-3.5Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES52NT♦4+1-7
-3.6Round 3🇮🇱 ISRAEL245♥♦6=+0
-3.6Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES155♣♠K+1-9
-3.8Round 1🇩🇰 DENMARK193NT♠8=+0
-3.9Round 12🇧🇪 BELGIUM313NT♥2+2-8
-4.0Round 10🇷🇸 SERBIA92♣♠Q=-11
-4.1Round 6🇨🇭 SWITZERLAND36♠♦3-2-13
-4.1Round 12🇧🇪 BELGIUM195♣♠4=-11
-4.3Round 9🇷🇴 ROMANIA232♠♠2+1+0
-4.4Round 12🇧🇪 BELGIUM204♥♣3-1-12
-4.5Round 6🇨🇭 SWITZERLAND155♣♠6=-3
-4.6Round 6🇨🇭 SWITZERLAND84♠♦4-1-5
-4.6Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES15♥♣K+1-8
-4.7Round 5BOSNIA HERZEGOVINA282♦♦J=-6
-4.9Round 12🇧🇪 BELGIUM293NT♦5+1+0
-5.2Round 12🇧🇪 BELGIUM302♠♥J+2-7
-5.2Round 15🇱🇹 LITHUANIA112♠♠Q+2-7
-5.3Round 9🇷🇴 ROMANIA326♠♣Q=+0
-5.7Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES102♥♠9-3-5
-6.1Round 6🇨🇭 SWITZERLAND165♦x♥A-3-7
-6.5Round 15🇱🇹 LITHUANIA13NT♥Q-1-10
-6.8Round 15🇱🇹 LITHUANIA76♥♠6=+13
-7.1Round 10🇷🇸 SERBIA134♠x♥A-1-8
-7.2Round 1🇩🇰 DENMARK231NT♣K-3-9
-7.4Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES133NT♥3+2-11
-7.6Round 9🇷🇴 ROMANIA214♠♥J+3-10
-7.7Round 3🇮🇱 ISRAEL175♥♠6=-8
-8.0Round 12🇧🇪 BELGIUM225♣♦Q=+5
-8.8Round 5BOSNIA HERZEGOVINA293♥♣K=-11
-8.8Round 10🇷🇸 SERBIA73NT♥4=-10
-9.1Round 3🇮🇱 ISRAEL315♣♥K+1-13
-9.4Round 5BOSNIA HERZEGOVINA254♥♠A-1-11
-10.8Round 10🇷🇸 SERBIA155♣♦J-2-11
-11.7Round 12🇧🇪 BELGIUM323NT♦5+4-14
-16.0Round 8🏴󠁧󠁢󠁷󠁬󠁳󠁿 WALES47♠♠4-1-17