🇳🇱 DE KOSTER Jaap · NETHERLANDS

33rank
+40.6Butler · 112 bds
+0.36per board
±4.3swing
+0.45vs par /bd · #27/69
+0.26adjusted /bd
Butler per round: 9.7 -31.9 8.8 33 3.8 10.5 7.3 -0.6by round

vs par split: bidding +0.05 · play +0.39

Strength of schedule: opponents averaged -0.10/bd (an easy draw) → opponent-adjusted +0.26/bd

Card play — on target: opening leads 70.4% #58 of 69 · declarer play 68.2% #38 of 69 · defence 80.4% #34 of 69

Bidding activity — not a pass: 40.5% #44 of 69 (115/284)

Card play by contract type — on target
vs NTvs a suit
Opening leads75.0% (8)68.4% (19)
Declarer play71.4% (7)66.7% (15)
Defence80.0% (15)80.5% (41)

Opening leads by suit led: ♠ 60.0% (5) · ♥ 75.0% (8) · ♦ 62.5% (8) · ♣ 83.3% (6)

vs par by strain: NT +1.00 (31) · a suit +0.23 (81)

vs par by level: part-score +0.67 (58) · game +0.12 (49) · slam +1.00 (5)

By role: declaring +0.50/bd (-1.16 vs par · 56) · defending +0.22/bd (+2.05 vs par · 56)

By vulnerability: vulnerable +0.36/bd (+0.80 vs par · 56) · not vulnerable +0.36/bd (+0.09 vs par · 56)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1K.VisserF.Asplund Sivelind – S.DanielssonOpen14+9.7+0.69-1.07
Round 4K.VisserA.Kochanowski – M.HolowaczOpen14-31.9-2.28-0.64
Round 5K.VisserE.Kuldkepp – M.AlasOpen14+8.8+0.63+1.43
Round 7K.VisserE.Cirule – B.StivrinaOpen14+33.0+2.36+3.93
Round 8K.VisserS.Draege – T.LillejordOpen14+3.8+0.27+0.93
Round 10K.VisserE.Vincent – L.DuchauxOpen14+10.5+0.75+0.36
Round 12K.VisserM.Adamczak – K.TurantOpen14+7.3+0.52-1.86
Round 13K.VisserM.Vlachou – T.VelliosClosed14-0.6-0.04+0.50

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
+12.5Round 8🇳🇴 NORWAY44NT♣8-2+17
+10.5Round 12🇵🇱 POLAND256♥x♦Q-1+7
+9.3Round 5🇪🇪 ESTONIA44♥x♦K-1+10
+9.2Round 7🇱🇻 LATVIA203♠♥6+2+10
+8.4Round 12🇵🇱 POLAND234♠♣6=+10
+7.3Round 7🇱🇻 LATVIA264♠♣7+2+13
+7.0Round 1🇸🇪 SWEDEN134♥♦4=-1
+6.5Round 7🇱🇻 LATVIA173NT♥T-1+10
+5.7Round 7🇱🇻 LATVIA153♠♣J-3+4
+5.5Round 12🇵🇱 POLAND166NT♥4=+0
+5.4Round 7🇱🇻 LATVIA192♥♣K+1+7
+5.2Round 7🇱🇻 LATVIA183♣♥4+1+12
+5.2Round 13🇬🇷 GREECE133NT♠6=+9
+5.0Round 10🇫🇷 FRANCE22♠♥A=+0
+4.5Round 10🇫🇷 FRANCE114♦♠Q-1+10
+4.3Round 1🇸🇪 SWEDEN103♦♥4-1+5
+4.3Round 5🇪🇪 ESTONIA63♠♦Q+1+8
+4.3Round 13🇬🇷 GREECE62♦♣A=+5
+4.2Round 10🇫🇷 FRANCE63♣♦T-2+5
+4.2Round 13🇬🇷 GREECE123♣♠Q+1+7
+4.0Round 5🇪🇪 ESTONIA14♥♦A+1+4
+4.0Round 13🇬🇷 GREECE143♣♦2+1+0
+3.8Round 1🇸🇪 SWEDEN73NT♦3-3+14
+3.6Round 8🇳🇴 NORWAY33♥♥7-2+2
+3.5Round 10🇫🇷 FRANCE121NT♦T=+5
+3.4Round 4🇩🇪 GERMANY193♦♥Q=+6
+3.2Round 5🇪🇪 ESTONIA32♠♦T-3+5
+3.1Round 12🇵🇱 POLAND262♠♦A+1+6
+3.0Round 1🇸🇪 SWEDEN114♥♦A-1-2
+3.0Round 1🇸🇪 SWEDEN122♦♥Q+1+0
+2.9Round 4🇩🇪 GERMANY263NT♥5-1+12
+2.9Round 5🇪🇪 ESTONIA22♦♣T+2-9
+2.9Round 7🇱🇻 LATVIA223♥♠J-2+0
+2.9Round 8🇳🇴 NORWAY74♥♣Q+1+1
+2.7Round 5🇪🇪 ESTONIA124♣♠Q-1-1
+2.5Round 4🇩🇪 GERMANY153NT♠4+2+1
+2.5Round 5🇪🇪 ESTONIA93NT♦6+1+1
+2.5Round 7🇱🇻 LATVIA242♦♥A+1+5
+2.5Round 7🇱🇻 LATVIA274♣♥A=+7
+2.4Round 4🇩🇪 GERMANY273♥♣4+2+3
+2.3Round 10🇫🇷 FRANCE144♠♦6+1+0
+2.1Round 7🇱🇻 LATVIA251NT♥3+2+1
+2.0Round 12🇵🇱 POLAND153NT♥5+2+0
+1.6Round 1🇸🇪 SWEDEN12♠♦K+3+2
+1.6Round 8🇳🇴 NORWAY23♣♦A-1-3
+1.6Round 13🇬🇷 GREECE14♠♣8+1+0
+1.5Round 8🇳🇴 NORWAY132♠♦J=+0
+1.4Round 8🇳🇴 NORWAY124♥♦K+1+0
+1.4Round 10🇫🇷 FRANCE33NT♣J+1+11
+1.3Round 10🇫🇷 FRANCE52♥♦8-1-5
+1.2Round 5🇪🇪 ESTONIA84♣♦T-1-4
+1.2Round 7🇱🇻 LATVIA211NT♠3=-1
+1.2Round 8🇳🇴 NORWAY94♠♥A-2+5
+0.7Round 8🇳🇴 NORWAY104♠♣8+2+1
+0.5Round 5🇪🇪 ESTONIA132♠♣Q+1+7
+0.5Round 10🇫🇷 FRANCE44♥♠A+2-12
+0.3Round 13🇬🇷 GREECE53♥♠A-1+5
+0.1Round 1🇸🇪 SWEDEN23♥♠9=+0
+0.1Round 1🇸🇪 SWEDEN43♦♥Q+1+0
+0.1Round 4🇩🇪 GERMANY173NT♣5+1+11
+0.0Round 8🇳🇴 NORWAY63♥♠A-2+0
-0.4Round 13🇬🇷 GREECE44♥♣5=+1
-0.5Round 10🇫🇷 FRANCE83♣♦2-2+1
-0.5Round 10🇫🇷 FRANCE91NT♦6+2+0
-0.6Round 10🇫🇷 FRANCE72♠♦J-2+9
-0.8Round 5🇪🇪 ESTONIA54♥♦3+2-1
-0.8Round 13🇬🇷 GREECE23NT♣3+1+0
-0.9Round 1🇸🇪 SWEDEN52♥♣A+3+3
-0.9Round 1🇸🇪 SWEDEN84♥♦7+2-1
-0.9Round 7🇱🇻 LATVIA283♠♣A=+0
-0.9Round 12🇵🇱 POLAND223NT♥9+1-10
-0.9Round 12🇵🇱 POLAND284♣♥A-1-11
-1.0Round 1🇸🇪 SWEDEN65♦♠A+1-13
-1.0Round 8🇳🇴 NORWAY112♠♥T-1-2
-1.0Round 13🇬🇷 GREECE32NT♠4=+0
-1.3Round 4🇩🇪 GERMANY243NT♦8+3-1
-1.3Round 12🇵🇱 POLAND242♠♦9-1-8
-1.3Round 13🇬🇷 GREECE112♠♦6=-6
-1.4Round 12🇵🇱 POLAND174♠♥A+2-5
-1.5Round 5🇪🇪 ESTONIA144♠♣6-2-6
-1.6Round 12🇵🇱 POLAND183NT♣5+1+1
-1.9Round 10🇫🇷 FRANCE102♥♥6+2-10
-2.2Round 10🇫🇷 FRANCE134♠♦9+1-2
-2.2Round 13🇬🇷 GREECE72♠♦Q=+10
-2.5Round 4🇩🇪 GERMANY213♥♣A+2-2
-2.6Round 1🇸🇪 SWEDEN33♠♦T+1-8
-2.6Round 4🇩🇪 GERMANY223♦♥J+1+0
-2.7Round 12🇵🇱 POLAND192NT♠7=-7
-2.9Round 4🇩🇪 GERMANY283♠♠9+2-8
-3.2Round 8🇳🇴 NORWAY142♦♥2+1+0
-3.3Round 8🇳🇴 NORWAY53NT♣4=+0
-3.4Round 12🇵🇱 POLAND204♥♦T+2-13
-3.5Round 1🇸🇪 SWEDEN94♥♦Q-2-8
-4.2Round 12🇵🇱 POLAND216♥♣9+1+11
-4.3Round 1🇸🇪 SWEDEN144♥♠Q-3-6
-4.3Round 5🇪🇪 ESTONIA105♣♥A=+11
-4.4Round 13🇬🇷 GREECE81NT♦6-1-5
-4.4Round 13🇬🇷 GREECE94♠♣2=-8
-5.7Round 5🇪🇪 ESTONIA113NT♠5-2-5
-5.7Round 13🇬🇷 GREECE104♥♦8-1-11
-5.8Round 4🇩🇪 GERMANY184♥♣T-2-11
-5.8Round 12🇵🇱 POLAND273♥♣7=-7
-6.1Round 7🇱🇻 LATVIA234♠♣A+1+0
-6.2Round 4🇩🇪 GERMANY163NT♥2+1-1
-6.5Round 4🇩🇪 GERMANY253NT♥7-2-6
-6.5Round 10🇫🇷 FRANCE12♠♣Q+2-7
-6.7Round 8🇳🇴 NORWAY84♠♣7=-8
-7.4Round 8🇳🇴 NORWAY16NT♣6=+0
-7.6Round 4🇩🇪 GERMANY233NT♥8-1-6
-7.8Round 4🇩🇪 GERMANY201NT♦T-4-7
-9.5Round 5🇪🇪 ESTONIA73NT♣2+2+0
-10.5Round 7🇱🇻 LATVIA166NT♣3-1-13