🇵🇱 KOWALSKI Apolinary · POLAND

30rank
-9.6Butler · 144 bds
-0.07per board
±4.4swing
-0.15vs par /bd · #29/50
-0.04adjusted /bd
Butler per round: 8.1 -22.3 -7.1 -18.3 19.8 -19.7 -13.4 34.6 8.7by round

vs par split: bidding -0.39 · play +0.24

Strength of schedule: opponents averaged +0.03/bd (an average draw) → opponent-adjusted -0.04/bd

Card play — on target: opening leads 72.4% #39 of 50 · declarer play 66.7% #41 of 50 · defence 85.7% #30 of 50

Card play by contract type — on target
vs NTvs a suit
Opening leads80.0% (10)68.4% (19)
Declarer play57.1% (14)71.4% (28)
Defence76.5% (17)89.1% (46)

Opening leads by suit led: ♠ 72.7% (11) · ♥ 75.0% (8) · ♦ 60.0% (5) · ♣ 80.0% (5)

vs par by strain: NT +1.48 (40) · a suit -0.77 (104)

vs par by level: part-score -0.77 (51) · game -0.12 (82) · slam +2.54 (11)

By role: declaring -0.07/bd (-2.07 vs par · 81) · defending -0.07/bd (+2.33 vs par · 63)

By vulnerability: vulnerable +0.78/bd (+0.46 vs par · 72) · not vulnerable -0.91/bd (-0.75 vs par · 72)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1J.RomanskiR.Maesel – H.MaeselOpen16+8.1+0.51-0.38
Round 2J.RomanskiD.Price – C.SimpsonOpen16-22.3-1.39+0.06
Round 3J.RomanskiG.Polet – A.KaplanOpen16-7.1-0.44-1.44
Round 4J.RomanskiT.Rusev – H.HristovOpen16-18.3-1.14-0.56
Round 5J.RomanskiG.Sellden – B.WennebergClosed16+19.8+1.24+0.44
Round 6J.RomanskiH.Berger – H.GrummClosed16-19.7-1.23-0.75
Round 7J.RomanskiM.Kovacs – M.DumbovichOpen16-13.4-0.84-0.25
Round 8J.RomanskiB.O'Brien – M.MacdonaghClosed16+34.6+2.16+2.38
Round 9J.RomanskiG.Norris – H.HansenClosed16+8.7+0.54-0.81

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 1🇳🇴 NORWAY27♣♦J=-2
+13.2Round 8🇮🇪 IRELAND275♥x♠Q-3+14
+12.8Round 6🇦🇹 AUSTRIA266♦♠7=+12
+9.7Round 9🇩🇰 DENMARK53NT♦2+1+10
+8.0Round 9🇩🇰 DENMARK23NT♠2-2+11
+7.8Round 6🇦🇹 AUSTRIA236♣x♥A-2+9
+7.6Round 7🇭🇺 HUNGARY154♥♠4=+3
+7.4Round 8🇮🇪 IRELAND223NT♣2-1+14
+6.9Round 5🇸🇪 SWEDEN155♠♠K=+0
+6.0Round 6🇦🇹 AUSTRIA314♠♥K-2+11
+5.4Round 8🇮🇪 IRELAND263♠♣Q-1+11
+5.2Round 5🇸🇪 SWEDEN93NT♥7+1+7
+5.1Round 1🇳🇴 NORWAY64♠♥2=+0
+5.1Round 5🇸🇪 SWEDEN103NT♠5+3+3
+4.7Round 5🇸🇪 SWEDEN126♠♣A=+0
+4.4Round 8🇮🇪 IRELAND313NT♥10-2+8
+4.3Round 4🇧🇬 BULGARIA313NT♥2+2+8
+4.3Round 9🇩🇰 DENMARK101♣♠J-2+3
+4.0Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND173NT♥6+1+8
+4.0Round 5🇸🇪 SWEDEN62♠♥5-2+3
+3.6Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND271NT♥K-1+5
+3.6Round 5🇸🇪 SWEDEN16♠♦7+1+1
+3.3Round 1🇳🇴 NORWAY153NT♥Q-1+5
+3.3Round 3🇧🇪 BELGIUM23NT♠6-1+5
+3.3Round 3🇧🇪 BELGIUM53NT♠4+1+0
+3.2Round 8🇮🇪 IRELAND284♠♣K-1+12
+2.9Round 9🇩🇰 DENMARK132♠♦5=+1
+2.8Round 7🇭🇺 HUNGARY141♠♣A+2+0
+2.7Round 3🇧🇪 BELGIUM73♠♣K=+0
+2.7Round 4🇧🇬 BULGARIA204♥♣8-1+12
+2.4Round 4🇧🇬 BULGARIA193NT♠4+2+10
+2.3Round 4🇧🇬 BULGARIA284♠♦Q+1+0
+2.3Round 7🇭🇺 HUNGARY24♥♥2-1+10
+2.1Round 1🇳🇴 NORWAY102♦♣2-1+5
+2.1Round 4🇧🇬 BULGARIA326NT♠5+1+11
+2.1Round 7🇭🇺 HUNGARY114♥♣K=-1
+2.0Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND254♥♥3+1+0
+1.9Round 3🇧🇪 BELGIUM14♥♦K+2-8
+1.8Round 7🇭🇺 HUNGARY122♥♠2-1-1
+1.7Round 3🇧🇪 BELGIUM101NT♥K+1-10
+1.7Round 8🇮🇪 IRELAND253NT♥J+3+2
+1.6Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND204♥♦7-2+2
+1.6Round 6🇦🇹 AUSTRIA294♠♣2=+0
+1.4Round 1🇳🇴 NORWAY165♣♥A-1-1
+1.4Round 5🇸🇪 SWEDEN72♠♥3-1+1
+1.4Round 9🇩🇰 DENMARK75♣♦A=-13
+1.3Round 1🇳🇴 NORWAY53♠♠9=+0
+1.3Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND292♥♣2+1+0
+1.3Round 7🇭🇺 HUNGARY134♠♠2=+0
+1.3Round 8🇮🇪 IRELAND323♠♠6-2+0
+1.2Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND241NT♦Q-1+2
+1.2Round 4🇧🇬 BULGARIA184♥♦10+2+1
+1.2Round 8🇮🇪 IRELAND244♠♥K-2+11
+1.1Round 3🇧🇪 BELGIUM162NT♠6=+11
+1.0Round 3🇧🇪 BELGIUM122♠♥6=-11
+1.0Round 8🇮🇪 IRELAND173♦♣4+1+0
+0.9Round 8🇮🇪 IRELAND213♠♥6+1+1
+0.9Round 8🇮🇪 IRELAND293NT♦4+3+1
+0.9Round 9🇩🇰 DENMARK154♠♥J=+3
+0.8Round 5🇸🇪 SWEDEN111NT♠3+1+1
+0.8Round 6🇦🇹 AUSTRIA272♠♦4=+0
+0.7Round 7🇭🇺 HUNGARY52♦♠7=-2
+0.6Round 3🇧🇪 BELGIUM64♥♠K=+0
+0.6Round 5🇸🇪 SWEDEN24♠♥K-1+5
+0.4Round 1🇳🇴 NORWAY143NT♠K+2+1
+0.3Round 1🇳🇴 NORWAY132♠♦A=+1
+0.3Round 7🇭🇺 HUNGARY162♥♦9+1+10
+0.3Round 9🇩🇰 DENMARK123NT♦J+1+0
+0.2Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND282♥♣A+1+7
+0.2Round 7🇭🇺 HUNGARY104♥♣A=+0
+0.2Round 8🇮🇪 IRELAND184♥♠9+1-11
+0.1Round 1🇳🇴 NORWAY43NT♠7+2+13
+0.0Round 1🇳🇴 NORWAY32♦♣Q=-1
+0.0Round 6🇦🇹 AUSTRIA172♥♦2-2-1
+0.0Round 6🇦🇹 AUSTRIA183NT♣J+1+0
+0.0Round 7🇭🇺 HUNGARY84♥♣Q+1+0
+0.0Round 9🇩🇰 DENMARK163NT♠8+1+0
-0.1Round 3🇧🇪 BELGIUM154♥♣A=+0
-0.1Round 4🇧🇬 BULGARIA263NT♠5+1+0
-0.3Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND262♠♥5+1+0
-0.3Round 6🇦🇹 AUSTRIA302♦♥9+2-7
-0.4Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND304♥♣A=-1
-0.4Round 5🇸🇪 SWEDEN162♦♦Q-1+10
-0.6Round 1🇳🇴 NORWAY91NT♥3-2+0
-0.6Round 3🇧🇪 BELGIUM112♥♠J=+1
-0.6Round 9🇩🇰 DENMARK142NT♠4-1-4
-0.7Round 4🇧🇬 BULGARIA253NT♦3+1+0
-0.8Round 3🇧🇪 BELGIUM44♠♥A=-3
-0.9Round 5🇸🇪 SWEDEN54♥♣8+1+0
-0.9Round 5🇸🇪 SWEDEN143NT♠8=-2
-0.9Round 8🇮🇪 IRELAND192♣♥Q=-5
-0.9Round 9🇩🇰 DENMARK93♦♣7=+5
-1.0Round 3🇧🇪 BELGIUM92♠♦8+1-6
-1.1Round 6🇦🇹 AUSTRIA201NT♠4+1-6
-1.2Round 8🇮🇪 IRELAND204♥♦6-1-6
-1.6Round 5🇸🇪 SWEDEN83♥♦Q=-1
-1.6Round 7🇭🇺 HUNGARY33♦♣7=+0
-1.6Round 9🇩🇰 DENMARK111NT♠10-1-4
-1.7Round 3🇧🇪 BELGIUM33NT♥5-2-5
-1.7Round 5🇸🇪 SWEDEN132♠♣K-1-6
-1.8Round 1🇳🇴 NORWAY13NT♠4+2-10
-1.9Round 4🇧🇬 BULGARIA304♠♥J-2+0
-1.9Round 6🇦🇹 AUSTRIA222♦♣5-1-4
-1.9Round 7🇭🇺 HUNGARY76♥♣9=+13
-1.9Round 8🇮🇪 IRELAND235♦♣Q+1-10
-2.1Round 9🇩🇰 DENMARK44♥♠K-1-12
-2.2Round 1🇳🇴 NORWAY74♠♦J-1+1
-2.2Round 8🇮🇪 IRELAND303NT♥K-1-4
-2.3Round 1🇳🇴 NORWAY124♠♥5-1+0
-2.3Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND324♥♠Q=+1
-2.4Round 4🇧🇬 BULGARIA225♦♣K-2-12
-2.6Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND314♠x♥3-1-5
-2.7Round 4🇧🇬 BULGARIA244♠♦A=+0
-2.7Round 4🇧🇬 BULGARIA274♥♠Q-3-6
-2.7Round 9🇩🇰 DENMARK61NT♠10-1-7
-2.8Round 5🇸🇪 SWEDEN32♠♥9+3-6
-3.1Round 3🇧🇪 BELGIUM86♦♥4=+0
-3.3Round 4🇧🇬 BULGARIA174♥♠3-1-10
-3.6Round 9🇩🇰 DENMARK14♠♣10+1-1
-3.6Round 9🇩🇰 DENMARK34♥♠8=-3
-3.7Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND223♠♥T+2+7
-3.7Round 9🇩🇰 DENMARK85♦♠A-3-2
-4.0Round 4🇧🇬 BULGARIA232NT♠2+1-10
-4.1Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND194♠♥Q-1-10
-4.2Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND184♥♠2+1-1
-4.2Round 5🇸🇪 SWEDEN44♠♣7+2-9
-4.7Round 4🇧🇬 BULGARIA214♣♠3-3+0
-5.2Round 6🇦🇹 AUSTRIA217♥♣J=+0
-5.7Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND235♣x♥K-3-5
-6.0Round 1🇳🇴 NORWAY82NT♥Q=-7
-6.0Round 7🇭🇺 HUNGARY62♥♣A=-6
-6.8Round 3🇧🇪 BELGIUM135♣♥Q+1+10
-6.9Round 6🇦🇹 AUSTRIA243NT♦6+1+0
-7.0Round 7🇭🇺 HUNGARY12♠♣6-1-10
-7.6Round 7🇭🇺 HUNGARY44♠♣A-2-9
-7.7Round 1🇳🇴 NORWAY114♥♣3=-11
-7.9Round 6🇦🇹 AUSTRIA254♠♦3=-1
-8.2Round 6🇦🇹 AUSTRIA326♣x♥A-2-5
-8.3Round 6🇦🇹 AUSTRIA285♦x♠K-1-12
-8.4Round 7🇭🇺 HUNGARY96♥x♣Q-1-11
-8.6Round 3🇧🇪 BELGIUM144♥♣A=-7
-8.9Round 6🇦🇹 AUSTRIA193NT♠2+1-8
-10.8Round 4🇧🇬 BULGARIA294♠♥3-2-13
-12.9Round 2🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND213♦x♦8-3-9