SIEROCKI Dariusz · KBS LEGIONOWO

106rank
-81.9Butler · 124 bds
-0.66per board
±4.4swing
-0.73vs par /bd · #109/120
-0.87adjusted /bd
Butler per round: -19.8 -8.5 -34.7 -22.6 -8 8 23 18.4 -37.7by round

vs par split: bidding -0.21 · play -0.52

Strength of schedule: opponents averaged -0.21/bd (an easy draw) → opponent-adjusted -0.87/bd

Card play — on target: opening leads 83.3% #58 of 120 · declarer play 67.6% #107 of 120 · defence 83.9% #79 of 120

Bidding activity — not a pass: 46.7% #23 of 120 (156/334)

Card play by contract type — on target
vs NTvs a suit
Opening leads50.0% (2)86.4% (22)
Declarer play60.0% (10)70.4% (27)
Defence71.4% (7)85.7% (49)

Opening leads by suit led: ♠ 83.3% (6) · ♥ 100.0% (6) · ♦ 60.0% (5) · ♣ 85.7% (7)

vs par by strain: NT -2.23 (22) · a suit -0.41 (102)

vs par by level: part-score -1.11 (54) · game -0.86 (59) · slam +1.82 (11)

By role: declaring -1.05/bd (-3.38 vs par · 68) · defending -0.19/bd (+2.48 vs par · 56)

By vulnerability: vulnerable -0.48/bd (-0.51 vs par · 61) · not vulnerable -0.83/bd (-0.95 vs par · 63)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1W.BiegajloJ.Wolfson – S.GarnerOpen14-19.8-1.41+1.43
Round 3W.BiegajloA.Levy – M.AbecassisClosed14-8.5-0.61-0.79
Round 4W.BiegajloD.Simson – E.RodwellOpen12-34.7-2.89-1.75
Round 6W.BiegajloJ.Van Der Neut – P.ZwartOpen14-22.6-1.61-2.29
Round 7W.BiegajloZ.Yan – J.NieOpen14-8.0-0.57-0.57
Round 8W.BiegajloM.Bak – P.SienkiewiczClosed14+8.0+0.57+0.71
Round 10W.BiegajloS.Gorski – A.HunkaClosed14+23.0+1.64+0.93
Round 11W.BiegajloJ.Pietrusza – J.TokarzOpen14+18.4+1.31+0.86
Round 12W.BiegajloA.Bapat – R.GoenkaOpen14-37.7-2.69-5.29

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
+13.0Round 10HAMMER167♥♠6-1+13
+12.1Round 11LECH103♥x♠8=+13
+12.0Round 3ZIMMERMANN137♥♥2=+0
+8.5Round 1WOLFSON74♠x♦A-1+9
+7.3Round 8RSB RACIBORZ234♠♥Q-2+12
+6.5Round 12OMEGA246♠♦Q=+0
+6.4Round 7BEIJING GLOBAL31♠♣4-3+5
+6.1Round 10HAMMER266♥♣6=+0
+5.9Round 7BEIJING GLOBAL76♦♠A=-8
+5.0Round 11LECH132♠♦Q-1+5
+4.5Round 8RSB RACIBORZ162♠♦K+3+6
+4.3Round 11LECH83♥♠8+1+4
+4.2Round 6VALLON203NT♠T-1+6
+4.1Round 10HAMMER183♠♥4-1+4
+4.1Round 10HAMMER274♥♠A-1+5
+4.0Round 4SIMSON263♦x♣3-1+12
+4.0Round 6VALLON264♠♥A=+0
+3.9Round 10HAMMER251♥♠K-3+5
+3.6Round 12OMEGA272♠♠8=+6
+3.3Round 11LECH113♥♣K=+1
+3.1Round 8RSB RACIBORZ203♣♠5-1-1
+3.0Round 8RSB RACIBORZ176NT♥4=+0
+2.9Round 10HAMMER212♠♥7+1+7
+2.7Round 10HAMMER152♣♥8=+0
+2.7Round 10HAMMER282♠♥2-2+5
+2.3Round 4SIMSON234♠♦9-1+6
+2.2Round 8RSB RACIBORZ284♠♠8-2+11
+2.1Round 4SIMSON174♥♦5=+0
+2.1Round 6VALLON213♥♠Q=+0
+1.9Round 3ZIMMERMANN94♠♣6-2+8
+1.9Round 11LECH52♥♠J+1+0
+1.8Round 6VALLON174♥♣2=+3
+1.8Round 6VALLON274♥♠A+1+0
+1.8Round 8RSB RACIBORZ212♠♦T+2+1
+1.7Round 7BEIJING GLOBAL103NT♥8+1-1
+1.6Round 7BEIJING GLOBAL12♥♠2+2-6
+1.4Round 1WOLFSON144♥♥8=-1
+1.3Round 11LECH22♠♣T=+0
+1.1Round 8RSB RACIBORZ263♥♠K-2+3
+1.0Round 3ZIMMERMANN54♥♠J=+1
+1.0Round 12OMEGA153♣♥8+1+0
+0.9Round 3ZIMMERMANN114♥♣K=+1
+0.8Round 11LECH73NT♣7+2+0
+0.7Round 6VALLON164♥♦8=+0
+0.7Round 8RSB RACIBORZ253NT♥2+2+0
+0.6Round 11LECH32♥♦7+3+3
+0.3Round 1WOLFSON104♥♠7+1+0
+0.3Round 12OMEGA233NT♠2+2-13
-0.0Round 3ZIMMERMANN73NT♦9+1+0
-0.0Round 11LECH12♠♠3+2+1
-0.1Round 3ZIMMERMANN63♦♥5=-7
-0.1Round 7BEIJING GLOBAL93NT♣J+3+13
-0.1Round 7BEIJING GLOBAL136♥♠7+1+13
-0.1Round 11LECH144♠♣A-2+0
-0.2Round 7BEIJING GLOBAL84♥♣9=+0
-0.3Round 6VALLON185♣♥A-1-5
-0.3Round 6VALLON254♠♦J+1+0
-0.3Round 8RSB RACIBORZ182♠♥5+2-6
-0.4Round 1WOLFSON14♥♠7+3+10
-0.6Round 1WOLFSON53NT♥A-2+1
-0.7Round 3ZIMMERMANN13♥♠A-1+2
-0.7Round 7BEIJING GLOBAL144♠♥T-1-4
-0.8Round 11LECH65♣x♥6-1+0
-0.9Round 3ZIMMERMANN144♠♦6=+1
-0.9Round 8RSB RACIBORZ224♠♦4+2+11
-0.9Round 10HAMMER224♠♣3=-1
-0.9Round 12OMEGA263♦♥T+1+0
-1.0Round 8RSB RACIBORZ273NT♣4-2+0
-1.1Round 7BEIJING GLOBAL111♠♥8+3+6
-1.2Round 1WOLFSON112NT♥T=-7
-1.3Round 1WOLFSON34♠♥2+1-1
-1.3Round 1WOLFSON64♥♣A=+0
-1.3Round 3ZIMMERMANN43NT♦4+3+17
-1.3Round 12OMEGA192♠♣Q+1+0
-1.5Round 6VALLON152♥♦6-1+2
-1.6Round 10HAMMER234♥♣6-2-2
-1.6Round 12OMEGA224♥♦A=+0
-1.7Round 3ZIMMERMANN33♥♣4=-1
-1.7Round 3ZIMMERMANN83♦♦2+1-7
-1.7Round 7BEIJING GLOBAL22NT♦9+3-3
-1.7Round 7BEIJING GLOBAL52♥♣A=+0
-1.9Round 6VALLON193NT♥6=+1
-2.0Round 11LECH122♠♣J-1+1
-2.3Round 4SIMSON163♦♠2-1-4
-2.3Round 10HAMMER193♥♦A-1-5
-2.4Round 4SIMSON202NT♠5-2-2
-2.4Round 10HAMMER244♠♣T+1+0
-2.5Round 1WOLFSON42♠♥8+1+0
-2.7Round 1WOLFSON136♦♥A+1+13
-3.0Round 1WOLFSON125♥♣A=+0
-3.0Round 7BEIJING GLOBAL44♠♥8+1-11
-3.2Round 8RSB RACIBORZ155♠♦T+2-10
-3.2Round 12OMEGA251NT♠3=-5
-3.6Round 11LECH92♦♥T-1-10
-3.7Round 4SIMSON243♦♣6=-1
-3.8Round 4SIMSON196♣♠4+1+13
-4.0Round 1WOLFSON24♠♥A=+5
-4.0Round 10HAMMER203♠♥J+1-7
-4.3Round 8RSB RACIBORZ243NT♣6-1-5
-4.3Round 12OMEGA183NT♥Q-1-5
-4.4Round 11LECH42♥♠Q+1-6
-4.5Round 6VALLON242♠♥A+1-4
-4.6Round 4SIMSON252♥♠6+1-6
-4.7Round 4SIMSON274♦♣K-1-10
-4.8Round 3ZIMMERMANN24♠♣A-3-9
-4.8Round 12OMEGA282♥♠6+3-6
-5.3Round 10HAMMER173NT♥3+2-11
-5.4Round 1WOLFSON94♠♥A+1-1
-5.4Round 4SIMSON212♠♣6-1-6
-5.5Round 12OMEGA163NT♥Q+3-12
-5.6Round 3ZIMMERMANN103NT♦K-1-6
-5.7Round 7BEIJING GLOBAL62♥♣5+2-6
-6.0Round 8RSB RACIBORZ194♠♣J-1-12
-6.3Round 6VALLON224♥♣T=-7
-6.4Round 4SIMSON222♠♦Q-2-11
-6.4Round 12OMEGA204♠♣9-1-12
-7.5Round 3ZIMMERMANN122♣♥8+1-11
-7.6Round 1WOLFSON84♥♣A=-8
-9.0Round 6VALLON286♠♠2-1-14
-9.3Round 7BEIJING GLOBAL124♥♠K=-6
-9.4Round 12OMEGA216♦x♠6-2-10
-9.8Round 4SIMSON184♠♣Q-2-12
-11.7Round 12OMEGA173NT♥2-2-17
-13.4Round 6VALLON233♥x♠K-3-14