MAZURKIEWICZ Marcin · POLAND

157rank
-13.4Butler · 140 bds
-0.10per board
±4.8swing
-0.09vs par /bd · #133/240
-0.10adjusted /bd
Butler per round: -4.4 -0.9 -15.7 -17.4 41.9 10.7 -35 17.7 -19.3 -7.9 -15 20.3 -4.1 15.7by round

vs par split: bidding +0.12 · play -0.19

Strength of schedule: opponents averaged -0.01/bd (an average draw) → opponent-adjusted -0.10/bd

Card play — on target: opening leads 70.0% #193 of 239 · declarer play 70.8% #171 of 239 · defence 85.7% #146 of 240

Card play by contract type — on target
vs NTvs a suit
Opening leads50.0% (4)75.0% (16)
Declarer play58.8% (17)77.4% (31)
Defence77.3% (22)89.1% (55)

Opening leads by suit led: ♠ 85.7% (7) · ♥ 100.0% (2) · ♦ 60.0% (5) · ♣ 50.0% (6)

vs par by strain: NT -0.74 (42) · a suit +0.22 (97)

vs par by level: part-score +0.42 (50) · game +0.03 (79) · slam -3.30 (10)

By role: declaring -0.66/bd (-2.71 vs par · 63) · defending +0.37/bd (+2.05 vs par · 77)

By vulnerability: vulnerable -0.36/bd (-0.84 vs par · 69) · not vulnerable +0.16/bd (+0.63 vs par · 71)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1K.JassemY.Chumak – O.RovyshynOpen10-4.4-0.44-2.00
Round 2K.JassemA.Buratti – C.MarianiClosed10-0.9-0.09+0.50
Round 3K.JassemC.Lorenzini – J.QuantinClosed10-15.7-1.57-1.20
Round 4K.JassemG.Andersson – A.StokkaOpen10-17.4-1.74-3.70
Round 5K.JassemJ.Harris – S.SkorchevOpen10+41.9+4.19+4.90
Round 6K.JassemH.Peyret – E.ErbilOpen10+10.7+1.07+0.80
Round 8K.JassemH.Berger – R.FranzelOpen10-35.0-3.50-2.20
Round 9K.JassemL.Blakset – K.BlaksetOpen10+17.7+1.77+4.30
Round 10K.JassemN.Kubac – N.ZorluClosed10-19.3-1.93-1.60
Round 11K.JassemN.Lhuissier – G.TessieresOpen10-7.9-0.79+0.50
Round 12K.JassemR.Tewari – J.ShivdasaniOpen10-15.0-1.50-5.40
Round 13K.JassemR.Grzelak – J.RomanskiOpen10+20.3+2.03+1.00
Round 14K.JassemB.Bos – J.Van LankveldOpen10-4.1-0.41-1.00
Round 15K.JassemJ.Shah – D.MajumdarOpen10+15.7+1.57+3.80

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
+14.0Round 5HARRIS186NTx♣Q=+14
+13.1Round 5HARRIS163♠x♥A-5+9
+10.1Round 11TESSIERES165♦♣5=+13
+10.0Round 15GOVINDACHARI TEAM265♣♥10=+10
+8.8Round 13BRIDGE24PL B53♦♣K-1+11
+8.0Round 15GOVINDACHARI TEAM256♦x♠K-1+13
+7.9Round 9DE KNIJFF253NT♠3=+0
+7.8Round 1NEVER CLAIM104♠x♥8-1+8
+7.6Round 5HARRIS133♠x♣6-2+9
+7.1Round 6NONAME255♦x♦5-1+0
+6.9Round 6NONAME212♥x♣5-2+9
+6.2Round 9DE KNIJFF305♣♣2+2+14
+5.9Round 14NETHERLANDS RED193NT♦5+1+0
+5.3Round 9DE KNIJFF212♣♥7-3+2
+5.0Round 15GOVINDACHARI TEAM274♠x♥A-3+2
+4.7Round 4BLUE CHIP SWEDES94♥♠10-3+7
+4.4Round 5HARRIS111NT♠2-1+4
+4.2Round 2PAUNCZ174♣♥K=-1
+3.7Round 5HARRIS144♣♣7-3+0
+3.7Round 6NONAME272♥♠A-2+5
+3.7Round 6NONAME292♦x♣K-1+2
+3.7Round 14NETHERLANDS RED123♠♣K-2+3
+3.7Round 14NETHERLANDS RED164♠♠A-3+1
+3.6Round 4BLUE CHIP SWEDES53NT♥Q+2+0
+3.6Round 9DE KNIJFF284♠♥7=+3
+3.6Round 13BRIDGE24PL B24♥♣7-1+11
+3.5Round 10ASSAEL63♥♦J-1+0
+3.5Round 13BRIDGE24PL B31NT♦Q-1+6
+3.1Round 1NEVER CLAIM14♥♦4-2+5
+3.1Round 4BLUE CHIP SWEDES64♠♥2=+3
+3.0Round 2PAUNCZ143NT♥K-1+4
+3.0Round 5HARRIS175♦♣A=-2
+2.9Round 4BLUE CHIP SWEDES104♥♣2=+3
+2.8Round 2PAUNCZ193NT♣10=+0
+2.7Round 10ASSAEL24♥♠K+1+8
+2.6Round 13BRIDGE24PL B63NT♥6+3-10
+2.5Round 13BRIDGE24PL B14♥♠Q-1+4
+2.3Round 3VENTIN292♥♠3=+0
+2.1Round 10ASSAEL94♥♦4+1+0
+2.0Round 12FORMIDABLES274♥♦7-1-3
+1.9Round 2PAUNCZ204♠♣Q=+0
+1.9Round 11TESSIERES143NT♥2-2+6
+1.9Round 12FORMIDABLES214♥♦K+1+0
+1.8Round 3VENTIN222♣♥A=+5
+1.8Round 5HARRIS121NT♦2+1+1
+1.8Round 15GOVINDACHARI TEAM305♣♠A-1+4
+1.7Round 2PAUNCZ162♥♦7=+5
+1.5Round 1NEVER CLAIM22NT♠9-3+6
+1.4Round 2PAUNCZ153NT♠2-3+2
+1.3Round 1NEVER CLAIM94♠♦A=+0
+1.3Round 8LUPO VELOCE194♥♠J=+0
+1.2Round 8LUPO VELOCE143NT♣2=+0
+1.0Round 4BLUE CHIP SWEDES24♦♥A-1+6
+1.0Round 13BRIDGE24PL B71NT♦9+1+0
+0.8Round 9DE KNIJFF271NT♦5=+1
+0.8Round 11TESSIERES203NT♠5+2+1
+0.8Round 12FORMIDABLES263NT♥J=+1
+0.6Round 6NONAME264♠♦5=+1
+0.6Round 6NONAME284♥♦5-2+5
+0.6Round 9DE KNIJFF292♠♥2-1+9
+0.6Round 15GOVINDACHARI TEAM223♦♣K+1+0
+0.5Round 8LUPO VELOCE203NT♠5+1-1
+0.5Round 14NETHERLANDS RED202♦♣J+1-11
+0.4Round 12FORMIDABLES244♥♥10+1+0
+0.3Round 13BRIDGE24PL B43NT♠6+2+0
+0.2Round 8LUPO VELOCE183NT♠2+1+0
+0.2Round 15GOVINDACHARI TEAM211NT♥5-1-1
+0.1Round 3VENTIN244♠♠8-1+4
+0.1Round 8LUPO VELOCE173NT♠2+1+0
+0.1Round 13BRIDGE24PL B104♥♦K=+0
-0.0Round 2PAUNCZ122NT♥6+2+6
+0.0Round 13BRIDGE24PL B81NT♠4+2-6
-0.1Round 3VENTIN262♥♥4+1+10
-0.1Round 9DE KNIJFF246♠♠2+1+11
-0.1Round 11TESSIERES154♠♦5=+1
-0.2Round 3VENTIN21Pass-3
-0.2Round 5HARRIS154♠♥2+1+0
-0.2Round 10ASSAEL72♥♠7+1-1
-0.2Round 11TESSIERES173♠♥K-1-4
-0.3Round 8LUPO VELOCE164♠♦K=+0
-0.3Round 9DE KNIJFF224♠♥8+2+13
-0.3Round 11TESSIERES183NT♠8=+1
-0.4Round 2PAUNCZ113♠♦A-1+6
-0.4Round 12FORMIDABLES223NT♥5+3-3
-0.4Round 12FORMIDABLES236♦♠8+1-13
-0.6Round 15GOVINDACHARI TEAM291NT♠2+1+1
-0.7Round 10ASSAEL82NT♣2+2-2
-0.8Round 1NEVER CLAIM84♠♣A=+0
-0.8Round 9DE KNIJFF261NT♣6+1+0
-0.9Round 14NETHERLANDS RED113♣♥2=+0
-1.0Round 6NONAME302♠♦5-1-1
-1.0Round 10ASSAEL43♣♦A-2+2
-1.1Round 12FORMIDABLES294♠x♦J-1-7
-1.4Round 10ASSAEL51NT♥Q-1-5
-1.4Round 11TESSIERES116♥♠3=+10
-1.6Round 3VENTIN236♠♦2+1-13
-1.6Round 3VENTIN303NT♥7=+1
-1.6Round 15GOVINDACHARI TEAM244♥♣2+2+11
-1.7Round 1NEVER CLAIM44♠♣2=+0
-2.1Round 3VENTIN274♠♣A-2+0
-2.1Round 5HARRIS194♥♣2=+1
-2.1Round 6NONAME221NT♦5-2-7
-2.1Round 12FORMIDABLES286♠♥K+1-11
-2.1Round 13BRIDGE24PL B92♠♥Q+2-6
-2.2Round 14NETHERLANDS RED144♠♣2-1-10
-2.3Round 4BLUE CHIP SWEDES74♠♦8-1-6
-2.4Round 1NEVER CLAIM63NT♥Q+1-11
-2.4Round 15GOVINDACHARI TEAM284♠♠4=+0
-2.5Round 14NETHERLANDS RED184♠♣5+1+13
-2.7Round 4BLUE CHIP SWEDES35♥♦8+1-12
-2.7Round 14NETHERLANDS RED172♠♣J-2+0
-2.8Round 1NEVER CLAIM74♥♦6+2-13
-3.3Round 14NETHERLANDS RED153♥♣Q=-6
-3.4Round 5HARRIS204♥♦J+1+13
-3.6Round 10ASSAEL33NT♣10=+2
-3.9Round 6NONAME243NT♦5=+0
-4.3Round 8LUPO VELOCE123NT♠J=+1
-4.5Round 11TESSIERES121NT♥9-1-4
-4.7Round 1NEVER CLAIM51NT♠2=-5
-4.7Round 12FORMIDABLES253♣♦3-2-7
-4.9Round 6NONAME234♠♦5-1-6
-5.3Round 8LUPO VELOCE154♥♦2-2-5
-5.3Round 15GOVINDACHARI TEAM233♣♠A-2-2
-5.5Round 9DE KNIJFF232♠♥Q+2-10
-5.6Round 2PAUNCZ135♠♥Q-1-7
-5.7Round 1NEVER CLAIM33NT♥6-1-10
-5.9Round 4BLUE CHIP SWEDES83♥♠A-2-11
-6.1Round 11TESSIERES134♥x♠A-1-8
-6.3Round 14NETHERLANDS RED134♠♠2=+0
-6.7Round 3VENTIN284♥♣K=-7
-7.6Round 3VENTIN255♦x♥5-2-9
-8.1Round 11TESSIERES195♥♠8-2-11
-9.3Round 4BLUE CHIP SWEDES13NT♦4+3-14
-9.4Round 10ASSAEL13NT♠3-1-10
-9.9Round 2PAUNCZ183♠♣Q=-10
-10.9Round 8LUPO VELOCE113♦x♠J-6+3
-11.3Round 10ASSAEL104♠♦6=-10
-11.4Round 12FORMIDABLES306♥♦5=-11
-12.5Round 4BLUE CHIP SWEDES47♥♣8=-13
-17.5Round 8LUPO VELOCE137♦♣3-1-20