DUFAU David · WHY NOT

312rank
-34.0Butler · 140 bds
-0.24per board
±4.5swing
-0.51vs par /bd · #324/384
-0.27adjusted /bd
Butler per round: -0.5 -3.2 28.5 -0.6 -4.8 -15.3 13.6 -17.7 -28.9 -25.5 14.6 4.7 2.7 -1.6by round

vs par split: bidding -0.41 · play -0.17

Strength of schedule: opponents averaged -0.03/bd (an average draw) → opponent-adjusted -0.27/bd

Card play — on target: opening leads 79.2% #186 of 384 · declarer play 67.4% #258 of 384 · defence 81.7% #223 of 384

Card play by contract type — on target
vs NTvs a suit
Opening leads71.4% (7)82.4% (17)
Declarer play52.9% (17)75.9% (29)
Defence89.5% (19)78.0% (41)

Opening leads by suit led: ♠ 88.9% (9) · ♥ 100.0% (5) · ♦ 40.0% (5) · ♣ 80.0% (5)

vs par by strain: NT -0.68 (44) · a suit -0.52 (94)

vs par by level: part-score -0.14 (55) · game -0.69 (73) · slam -2.10 (10)

By role: declaring -0.24/bd (-2.48 vs par · 79) · defending -0.25/bd (+2.03 vs par · 61)

By vulnerability: vulnerable +0.03/bd (+0.06 vs par · 71) · not vulnerable -0.52/bd (-1.10 vs par · 69)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 2C.KoeckJ.Tomcani – M.KemenovaClosed10-0.5-0.05+1.50
Round 3C.KoeckF.Combescure – B.CronierClosed10-3.2-0.32-1.00
Round 4C.KoeckC.Outred – V.OutredClosed10+28.5+2.85+0.80
Round 5C.KoeckW.El Ahmady – E.HavasClosed10-0.6-0.06+0.20
Round 6C.KoeckL.Chemaly – C.LipshitzClosed10-4.8-0.48+1.50
Round 7C.KoeckI.Luessmann – C.LuessmannClosed10-15.3-1.53-2.50
Round 8C.KoeckB.Saurer – D.FischerClosed10+13.6+1.36+0.90
Round 9C.KoeckN.Van Der Gaast – A.WesselingClosed10-17.7-1.77-1.70
Round 10C.KoeckH.Gwinner – D.LangerClosed10-28.9-2.89-3.60
Round 11C.KoeckI.Volozhenin – K.NekrasovaClosed10-25.5-2.55-3.30
Round 12C.KoeckS.Shah – P.ShahClosed10+14.6+1.46+2.40
Round 13C.KoeckD.Nikolenkov – A.HaidorferClosed10+4.7+0.47+0.40
Round 14C.KoeckK.Titow – J.TitowClosed10+2.7+0.27-1.30
Round 15C.KoeckT.Gotard – M.BoeckerClosed10-1.6-0.16-1.50

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
+10.5Round 15GOTARD263NTx♦8-2+12
+9.8Round 4SCOTLAND63♦x♠6-3+9
+8.1Round 7LADY85♣♥7-1+14
+7.9Round 6ROARING LIONS295♦♠A=+9
+7.6Round 3MILLICENT5294♥x♦8=+7
+7.1Round 2CZECHOSLOVAKIA124♥♥3=+0
+7.0Round 4SCOTLAND13♥x♣A-3+3
+6.9Round 4SCOTLAND26♥♣5=-11
+6.9Round 5BROWN204♥♣4=+11
+6.7Round 2CZECHOSLOVAKIA173NT♠8=+6
+6.2Round 8SIGMA143NT♣6+1-1
+5.7Round 12KENYA303♠♥2+2+6
+5.6Round 12KENYA225♥♠A-1+6
+5.1Round 14TITOW113NT♥8-3+7
+5.0Round 13SWISS BEARS23NT♣7+1+0
+4.8Round 3MILLICENT5264♥♠2+1+0
+4.8Round 8SIGMA194♠♦5=+7
+4.6Round 2CZECHOSLOVAKIA133♣♣3-1+5
+4.5Round 5BROWN191NT♥4+1+12
+4.4Round 11BARIBAL204♥♠6=+9
+4.3Round 4SCOTLAND53NT♠K+1+0
+4.1Round 4SCOTLAND41NT♠7=+5
+4.1Round 5BROWN152♥♦6=+6
+4.1Round 12KENYA27Pass+10
+3.8Round 12KENYA296♠♥A+1+13
+3.8Round 13SWISS BEARS54♥♦8-1+5
+3.7Round 6ROARING LIONS272♦x♠A=+3
+3.2Round 14TITOW203NT♦7=+0
+3.1Round 3MILLICENT5223♥♣5=+0
+3.0Round 9BINKIE304♥♣A-1+5
+2.9Round 13SWISS BEARS45♦♦2-1+12
+2.8Round 7LADY32♦♣Q-1+5
+2.8Round 15GOTARD233♣♣8=+6
+2.5Round 8SIGMA173♠♦A-1+6
+2.5Round 13SWISS BEARS93♣♠A=+6
+2.4Round 11BARIBAL163NT♣J-1+12
+2.4Round 15GOTARD291♣♣6+3+0
+2.3Round 6ROARING LIONS231NT♠J-1+5
+2.2Round 6ROARING LIONS284♥♥2-1+5
+2.2Round 12KENYA262♥♦A=-1
+2.2Round 15GOTARD243♥♠3-2+0
+2.1Round 10FUGGER83♠♦A=+7
+2.1Round 13SWISS BEARS73NT♠4-2+7
+1.8Round 6ROARING LIONS224♠x♥A-2-7
+1.7Round 15GOTARD273NT♠2+2-8
+1.6Round 9BINKIE283♠♣3-1-1
+1.5Round 4SCOTLAND73♠♠3-1-1
+1.5Round 8SIGMA164♠♣K+1+0
+1.4Round 10FUGGER44♥♣K-2+8
+1.3Round 13SWISS BEARS13♠♣2=+0
+1.2Round 2CZECHOSLOVAKIA183NT♠Q+3+14
+1.2Round 7LADY72♥♣A+2-10
+1.1Round 5BROWN182NT♥4+1+0
+1.0Round 8SIGMA202♦♥5+1-1
+1.0Round 14TITOW143♦♣K-1-2
+1.0Round 14TITOW163NT♠8+1-10
+0.8Round 3MILLICENT5254♠♣Q=+0
+0.8Round 3MILLICENT5304♠♦10+1+4
+0.6Round 7LADY54♠♣Q=+0
+0.6Round 13SWISS BEARS83NT♦3+1+0
+0.5Round 6ROARING LIONS244♥♦7+1+0
+0.4Round 9BINKIE214♠♥J=-1
+0.4Round 12KENYA255♦♠8-1-5
+0.3Round 4SCOTLAND83♠♣7+2+6
+0.3Round 11BARIBAL172NT♥10+1-6
+0.2Round 3MILLICENT5241NT♦Q=+8
+0.2Round 8SIGMA114♥♠J=-1
+0.1Round 5BROWN174♠♦K+1+0
+0.1Round 14TITOW123NT♠5+2+0
-0.0Round 14TITOW172♠♥7+1+1
-0.2Round 3MILLICENT5233NT♥5+1+0
-0.2Round 8SIGMA122♣♥6=-11
-0.2Round 8SIGMA153NT♣6+2+11
-0.3Round 2CZECHOSLOVAKIA203NT♥10+2+0
-0.3Round 8SIGMA131NT♥K=-1
-0.3Round 10FUGGER73NT♣2=+0
-0.3Round 13SWISS BEARS6Pass-3
-0.4Round 2CZECHOSLOVAKIA162♠♣2+1-7
-0.5Round 12KENYA241NT♥7-1+3
-0.7Round 2CZECHOSLOVAKIA142♣♥3+2+0
-0.7Round 11BARIBAL123♠♥J=-1
-0.7Round 14TITOW193NT♣3+2+0
-0.7Round 15GOTARD223♣♠5+1+0
-0.8Round 5BROWN142♠♠2+2+6
-0.8Round 15GOTARD303NT♦8=+1
-0.9Round 6ROARING LIONS213NT♥9=+0
-0.9Round 9BINKIE264♠♣5+1+13
-0.9Round 10FUGGER11NT♥8-1-4
-1.1Round 9BINKIE232♠♦Q+1+0
-1.3Round 7LADY13♥♠K=-1
-1.3Round 7LADY61NT♥5-3+3
-1.3Round 10FUGGER23NT♠10+3-17
-1.3Round 14TITOW182♠♠2=+0
-1.5Round 4SCOTLAND34♥♦6+2-1
-1.5Round 4SCOTLAND102♦♣Q=-2
-1.5Round 14TITOW153NT♥8+1-10
-1.8Round 5BROWN133NT♦9-1-12
-1.9Round 8SIGMA184♠♥A-1+0
-1.9Round 10FUGGER102♦♠K+1-10
-2.0Round 6ROARING LIONS266♥♠2=+13
-2.0Round 10FUGGER64♠♥5-2+0
-2.1Round 9BINKIE293NT♠3+2+0
-2.1Round 12KENYA283♣♦K+1-1
-2.2Round 12KENYA213NT♠9+1-1
-2.4Round 4SCOTLAND92♦♠K+1+0
-2.4Round 12KENYA233♥♠6-1-6
-2.6Round 9BINKIE254♠♣4-1-5
-2.6Round 9BINKIE273NT♥8=-7
-2.6Round 11BARIBAL144♥♣K-1-4
-2.8Round 11BARIBAL134♠♥7+1-4
-2.9Round 5BROWN163♠♣Q+1-7
-2.9Round 11BARIBAL115♣♠10-1-5
-3.0Round 5BROWN111NT♣3=-5
-3.2Round 2CZECHOSLOVAKIA156♠♦6=+11
-3.3Round 13SWISS BEARS33NT♣4-1-10
-3.5Round 9BINKIE223NT♦8=-10
-4.1Round 7LADY24♠♦Q-1-10
-4.2Round 14TITOW132♠♠5+2+1
-4.3Round 15GOTARD214♠♦2-1-5
-4.6Round 10FUGGER31♠♣5+1-6
-4.7Round 7LADY93NT♠A-2-2
-4.7Round 7LADY104♠♠4+2-13
-4.9Round 2CZECHOSLOVAKIA112♠x♦A-2-4
-6.1Round 3MILLICENT5284♠♦2-1-9
-6.5Round 11BARIBAL183NT♠2-1-12
-6.6Round 3MILLICENT5216♥♠2-1-9
-7.0Round 15GOTARD283NT♠J-2-11
-7.6Round 3MILLICENT5273♦♥Q=-11
-7.6Round 6ROARING LIONS307♥♠2=+0
-8.0Round 11BARIBAL156♥♠A-1-12
-8.4Round 15GOTARD255♠x♥A=-10
-8.8Round 5BROWN123NT♦3-3-9
-9.1Round 11BARIBAL193♠♦4-1-10
-9.5Round 10FUGGER55♦♣10-5-12
-9.9Round 9BINKIE246♠♥5-2-11
-9.9Round 13SWISS BEARS104♥♠K=-13
-10.6Round 2CZECHOSLOVAKIA194♠x♠A-5-10
-11.9Round 7LADY43♠x♥K=-11
-11.9Round 10FUGGER96♠♦4=-2
-12.7Round 6ROARING LIONS256♦♥A=-13