SIETSMA Sytze · BCO Z

512rank
-30.4Butler · 140 bds
-0.22per board
±4.7swing
+0.55vs par /bd · #137/695
-0.61adjusted /bd
Butler per round: -22.1 -9.4 29.2 -19.7 -7.7 -9.9 -14.2 25.9 4.4 -0.8 -7.8 4.5 4 -6.8by round

vs par split: bidding +0.89 · play -0.34

Strength of schedule: opponents averaged -0.39/bd (an easy draw) → opponent-adjusted -0.61/bd

Card play — on target: opening leads 82.4% #260 of 694 · declarer play 67.7% #556 of 694 · defence 80.8% #490 of 695

Card play by contract type — on target
vs NTvs a suit
Opening leads70.0% (10)87.5% (24)
Declarer play50.0% (4)70.4% (27)
Defence78.6% (28)82.0% (50)

Opening leads by suit led: ♠ 55.6% (9) · ♥ 88.9% (9) · ♦ 100.0% (8) · ♣ 87.5% (8)

vs par by strain: NT +2.79 (38) · a suit -0.28 (102)

vs par by level: part-score -0.87 (60) · game +1.26 (73) · slam +5.29 (7)

By role: declaring +0.43/bd (-1.37 vs par · 62) · defending -0.73/bd (+2.08 vs par · 78)

By vulnerability: vulnerable +0.19/bd (+1.01 vs par · 71) · not vulnerable -0.63/bd (+0.07 vs par · 69)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1I.NieuwenhuisJ.Upmark – J.KamrasClosed10-22.1-2.21-2.80
Round 2I.NieuwenhuisJ.Ventin – F.WrangClosed10-9.4-0.94-0.30
Round 3I.NieuwenhuisS.Richards – T.TowersOpen10+29.2+2.92+2.60
Round 4I.NieuwenhuisR.Van Mechelen – E.DebusOpen10-19.7-1.97-1.10
Round 5I.NieuwenhuisJ.Cormack – K.WoolesOpen10-7.7-0.77+0.00
Round 6I.NieuwenhuisH.Kleuver – C.IndriOpen10-9.9-0.99-0.60
Round 7I.NieuwenhuisG.Bhayat – M.MazharOpen10-14.2-1.42+1.10
Round 8I.NieuwenhuisR.Revankar – S.GoleClosed10+25.9+2.59+0.50
Round 9I.NieuwenhuisJ.De Cock – J.PouwelsClosed10+4.4+0.44+0.10
Round 10I.NieuwenhuisS.Capal – J.HarrisClosed10-0.8-0.08+0.60
Round 12I.NieuwenhuisB.Koster – T.De JongClosed10-7.8-0.78+4.80
Round 13I.NieuwenhuisD.Mcleish – P.McleishClosed10+4.5+0.45+1.10
Round 14I.NieuwenhuisJ.Schellart – H.Van UdenOpen10+4.0+0.40+1.60
Round 15I.NieuwenhuisT.Gauld – S.CochemeClosed10-6.8-0.68+0.10

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
+14.7Round 3TOWERS255♣x♠5-5+15
+13.9Round 10HARRIS74♠x♦9-3+14
+12.9Round 14HEKSENTOER OUDEWATER196NT♦8-1+13
+10.0Round 4BEGIJNTJE65♠♥K-1+13
+9.4Round 8PUNE BLUES INDIA163NT♣2+2+4
+8.8Round 8PUNE BLUES INDIA144♥♣8+1+8
+7.5Round 3TOWERS284♠x♦4+1+7
+7.0Round 8PUNE BLUES INDIA113NT♦3=+6
+7.0Round 13GOLD COAST AUSTRALIA33NT♣2-3+9
+6.3Round 14HEKSENTOER OUDEWATER173♠xx♣J+2-7
+5.6Round 14HEKSENTOER OUDEWATER124♠x♦A-2+5
+5.5Round 6WINKSYS214♠♣10-1+5
+5.3Round 12LEUSDEN244♥♦K+2+11
+4.5Round 13GOLD COAST AUSTRALIA104♠♥Q-1+12
+4.4Round 9PHILHARMONIE263NT♦5-1+17
+4.3Round 8PUNE BLUES INDIA192♠♣10+1+1
+4.1Round 4BEGIJNTJE106♠♥10=+0
+4.1Round 6WINKSYS303NT♠2-2+5
+4.1Round 13GOLD COAST AUSTRALIA42NT♠5=+6
+4.0Round 1SWEDENPLUS93♥♦4=+1
+3.7Round 8PUNE BLUES INDIA204♥♥2=+0
+3.7Round 14HEKSENTOER OUDEWATER203NT♠6-1+12
+3.5Round 3TOWERS304♦♠10=+6
+3.5Round 12LEUSDEN253♦♥Q=+7
+3.4Round 9PHILHARMONIE252♦♣6+1+5
+3.3Round 15BOWLES234♣♣4=+0
+3.1Round 3TOWERS242♠♥9=+5
+3.1Round 9PHILHARMONIE242♠♦3=+0
+3.1Round 10HARRIS43♦♠K+1+0
+3.0Round 5RAYNER156♥♣J=+0
+2.9Round 3TOWERS262♠♦6-1+1
+2.9Round 10HARRIS93♣♣2=-1
+2.7Round 2WRANG182♦♥3+1-1
+2.7Round 7PAKISTAN SENIORS11NT♣3=+8
+2.6Round 1SWEDENPLUS33NT♥A=+0
+2.5Round 6WINKSYS284♠♥A-2+5
+2.4Round 5RAYNER134♠♠8+3+12
+2.4Round 7PAKISTAN SENIORS42♥♦J=+6
+2.4Round 15BOWLES214♥♥3+1+0
+2.3Round 9PHILHARMONIE224♥♣K+3+2
+2.3Round 10HARRIS51NT♠3+4+3
+1.8Round 3TOWERS222♣♠J=-1
+1.7Round 2WRANG144♠♥3-2+0
+1.7Round 6WINKSYS234♥♦6+1+0
+1.7Round 8PUNE BLUES INDIA123♠♥K+1-1
+1.6Round 4BEGIJNTJE23♠♣A-1+8
+1.4Round 5RAYNER182♥♥Q-1-2
+1.3Round 13GOLD COAST AUSTRALIA13NT♠3+2+0
+1.1Round 1SWEDENPLUS103♠♣Q=+0
+1.1Round 3TOWERS292NT♣8=-1
+1.1Round 15BOWLES224♠♦3+1+1
+1.0Round 2WRANG123♥♥J=+0
+1.0Round 2WRANG133NT♠8+3+13
+0.7Round 4BEGIJNTJE72♠♣A=+0
+0.7Round 9PHILHARMONIE213♠♥J+1-1
+0.6Round 9PHILHARMONIE284♥♠6+2-12
+0.6Round 9PHILHARMONIE301NT♠4+2+6
+0.5Round 1SWEDENPLUS62♣♠A+2-10
+0.5Round 15BOWLES284♠♥A+1+0
+0.4Round 2WRANG192♠♥J=-9
+0.4Round 7PAKISTAN SENIORS94♥♣K-3+3
+0.4Round 10HARRIS102♣♠J+3+1
+0.3Round 5RAYNER113NT♥3+1+0
+0.3Round 10HARRIS22♠♦K+1+10
+0.2Round 13GOLD COAST AUSTRALIA62♥♣10+2-6
+0.2Round 15BOWLES264♠♣A=+0
+0.1Round 5RAYNER164♥♠4+2+1
+0.0Round 5RAYNER124♥♦2+1+0
-0.1Round 2WRANG113♦♣4-1+2
-0.2Round 14HEKSENTOER OUDEWATER152♠♦A=-5
-0.4Round 3TOWERS233♥♣A-1-1
-0.4Round 4BEGIJNTJE44♥♣4+1-1
-0.4Round 13GOLD COAST AUSTRALIA53NT♣2=+1
-0.5Round 7PAKISTAN SENIORS52♥♠3+1+0
-0.5Round 8PUNE BLUES INDIA153NT♦2+2+0
-0.6Round 14HEKSENTOER OUDEWATER143NT♥8+1+11
-0.7Round 7PAKISTAN SENIORS74♠♥K=+0
-0.7Round 10HARRIS13NT♦3+2+0
-0.8Round 7PAKISTAN SENIORS23NT♥3+1+0
-0.8Round 12LEUSDEN213NT♦2+2+12
-0.8Round 12LEUSDEN231NT♦K-4+6
-0.8Round 12LEUSDEN296♥x♦3=+11
-1.0Round 13GOLD COAST AUSTRALIA93NT♠9+3+12
-1.0Round 15BOWLES244♠♣A+1+0
-1.0Round 15BOWLES294♠♥5+1+0
-1.1Round 3TOWERS271NT♥6=-2
-1.2Round 8PUNE BLUES INDIA172♠♥J-1-5
-1.2Round 15BOWLES303NT♣8=+2
-1.3Round 8PUNE BLUES INDIA134♥♣A=-3
-1.4Round 7PAKISTAN SENIORS63♥♥Q-1-6
-1.4Round 13GOLD COAST AUSTRALIA81NT♦4-2-7
-1.5Round 1SWEDENPLUS24♥♠4-1+2
-1.5Round 5RAYNER173♣♦Q=+0
-1.5Round 7PAKISTAN SENIORS33NT♠9+2-2
-1.5Round 12LEUSDEN223♣♥K=+1
-1.5Round 12LEUSDEN263♦♣K+1+0
-1.5Round 12LEUSDEN274♥♣9+1+0
-1.6Round 9PHILHARMONIE273NT♠6=-3
-1.6Round 10HARRIS31NT♠4=+0
-1.7Round 12LEUSDEN304♥♦K+1+10
-1.8Round 6WINKSYS263♠♥5-1+0
-1.8Round 14HEKSENTOER OUDEWATER112♦♣6+1+0
-2.1Round 5RAYNER142NT♠6=+0
-2.1Round 15BOWLES274♠♦A+1+0
-2.3Round 4BEGIJNTJE14♥♠A-1+2
-2.4Round 6WINKSYS242NT♠5+1-7
-2.6Round 2WRANG154♣♥8-1-5
-2.9Round 1SWEDENPLUS73NT♦4+1-1
-2.9Round 13GOLD COAST AUSTRALIA23♠♥A-1-10
-3.0Round 9PHILHARMONIE293NT♥J+3-1
-3.2Round 6WINKSYS251NT♥9+2-2
-3.6Round 2WRANG165♥♠Q-1-5
-3.7Round 4BEGIJNTJE83♠♦K-2-5
-3.7Round 14HEKSENTOER OUDEWATER165♦♥A=-3
-3.9Round 3TOWERS213NT♠4+3-3
-4.3Round 1SWEDENPLUS83♣♠A-3-7
-4.4Round 1SWEDENPLUS53♣♦2-1-4
-4.4Round 2WRANG172♠♣4=-6
-4.7Round 6WINKSYS224♠♥10-3-11
-4.7Round 6WINKSYS294♠♦J+1+0
-4.9Round 5RAYNER194♥♣6-2-11
-5.1Round 7PAKISTAN SENIORS84♠♥A+2-11
-5.2Round 14HEKSENTOER OUDEWATER183♠♣5-1-10
-5.5Round 2WRANG204♦♥5+1+8
-6.0Round 8PUNE BLUES INDIA185♠x♥K=-5
-6.1Round 9PHILHARMONIE234♥♦6-1-12
-6.2Round 1SWEDENPLUS15♦x♣K-2-9
-6.4Round 5RAYNER205♦♠9=+0
-6.9Round 6WINKSYS273NT♠5+1-1
-6.9Round 13GOLD COAST AUSTRALIA74♠♥K-1-6
-7.4Round 4BEGIJNTJE55♣x♥4=-4
-8.0Round 12LEUSDEN283NT♠7=-10
-9.0Round 15BOWLES254♠♦K+1-2
-9.1Round 4BEGIJNTJE94♥♦A=-10
-9.7Round 7PAKISTAN SENIORS106♦♣K=+13
-10.1Round 10HARRIS62♣x♥5-4-12
-11.0Round 1SWEDENPLUS46♥♦9=+0
-11.3Round 10HARRIS82♠x♦K-4-9
-13.0Round 14HEKSENTOER OUDEWATER136♥♠Q=+0
-13.2Round 4BEGIJNTJE35♦x♠K=-14