DUBININ Alexander · ERA

250rank
+0.2Butler · 70 bds
+0.00per board
±4.1swing
+0.20vs par /bd · #180/478
+0.23adjusted /bd
Butler per round: -4.2 2.7 1.6 25 12.1 -12.5 -24.5by round

vs par split: bidding -0.04 · play +0.29

Strength of schedule: opponents averaged +0.23/bd (a tough draw) → opponent-adjusted +0.23/bd

Card play — on target: opening leads 87.5% #51 of 476 · declarer play 76.5% #261 of 478 · defence 86.1% #229 of 478

Card play by contract type — on target
vs NTvs a suit
Opening leads83.3% (6)90.0% (10)
Declarer play50.0% (6)90.9% (11)
Defence69.2% (13)95.7% (23)

Opening leads by suit led: ♠ 80.0% (5) · ♥ 83.3% (6) · ♦ 100.0% (3) · ♣ 100.0% (2)

vs par by strain: NT -0.21 (28) · a suit +0.56 (41)

vs par by level: part-score -0.75 (24) · game +1.03 (38) · slam -0.57 (7)

By role: declaring +0.14/bd (-1.35 vs par · 34) · defending -0.12/bd (+1.67 vs par · 36)

By vulnerability: vulnerable -0.64/bd (-1.21 vs par · 34) · not vulnerable +0.61/bd (+1.53 vs par · 36)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 2A.GromovG.Hampson – E.GrecoOpen10-4.2-0.42-1.20
Round 4A.GromovY.Chen – J.ZhaoClosed10+2.7+0.27+1.00
Round 5A.GromovW.El Ahmady – T.SadekClosed10+1.6+0.16+1.70
Round 7A.GromovT.Helness – G.HelgemoOpen10+25.0+2.50+3.70
Round 8A.GromovJ.Sprung – D.SprungClosed10+12.1+1.21-1.10
Round 9A.GromovH.Poon – C.LooOpen10-12.5-1.25-1.90
Round 10A.GromovJ.Kalita – M.NowosadzkiClosed10-24.5-2.45-0.80

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
+10.6Round 7ZIMMERMANN154♥♦7-1+12
+10.6Round 8MIXED UP53NT♦2-1+13
+10.3Round 5STRUL234♥♣4=+15
+8.5Round 4CHINA OPEN 2174♥♦K-2+11
+8.0Round 7ZIMMERMANN164♠♥Q+3+14
+7.6Round 2FLEISHER155♥x♦6=+10
+7.1Round 8MIXED UP73NT♣Q=+0
+5.1Round 4CHINA OPEN 2131NT♥A-2+8
+4.8Round 7ZIMMERMANN203♦♦5-3+4
+4.4Round 7ZIMMERMANN144♠♥3=+11
+4.4Round 8MIXED UP13NT♠4+1+7
+3.9Round 10PSZCZOLA222♥♦10+2+10
+2.2Round 4CHINA OPEN 2124♣♦9-2+0
+2.1Round 5STRUL271NT♦Q=+6
+2.0Round 7ZIMMERMANN113NT♥8-1+5
+1.9Round 9ZHAO113NT♦J=-1
+1.8Round 2FLEISHER173NT♠7+1+0
+1.4Round 5STRUL222♠♥3+1+1
+1.4Round 9ZHAO126NT♦10=+0
+1.2Round 8MIXED UP21NT♥6+2-6
+0.9Round 4CHINA OPEN 2155♠x♣5-1+5
+0.7Round 2FLEISHER134♥♠8+1+0
+0.7Round 8MIXED UP92♠♥2+1+0
+0.6Round 5STRUL253NT♥5+2+1
+0.5Round 7ZIMMERMANN183NT♥3+1-1
+0.4Round 4CHINA OPEN 2161NT♠J-1+0
+0.4Round 7ZIMMERMANN136♠♣10=-8
+0.1Round 2FLEISHER112♣♠K-2-1
+0.1Round 9ZHAO203NT♥7+2-13
-0.0Round 2FLEISHER122♥♥A=+1
-0.0Round 5STRUL304♠♦3=+0
-0.1Round 2FLEISHER183NT♠Q+1+0
-0.2Round 5STRUL293NT♣10+1-1
-0.2Round 9ZHAO192♦♠2+2+1
-0.2Round 10PSZCZOLA253NT♣6+1-1
-0.3Round 7ZIMMERMANN121NT♥9+1+0
-0.5Round 8MIXED UP63NT♠4=+0
-0.6Round 10PSZCZOLA295♦♣3=-1
-0.8Round 2FLEISHER143♣♠6-1-4
-0.8Round 5STRUL28Pass-3
-1.0Round 2FLEISHER193♦♣J-1-12
-1.0Round 4CHINA OPEN 2182♥♣6+1-1
-1.1Round 5STRUL246♦♣K=+2
-1.2Round 10PSZCZOLA246NT♠J=+0
-1.6Round 8MIXED UP33NT♦10-1-12
-1.6Round 8MIXED UP103NT♠9-1+0
-1.6Round 9ZHAO154♠♥4+1+0
-1.8Round 7ZIMMERMANN172♥♦J=+0
-1.8Round 9ZHAO135♠♣9=+0
-1.8Round 10PSZCZOLA213NT♦9+1-1
-2.1Round 4CHINA OPEN 2113♠♦A+1-6
-2.8Round 9ZHAO142♠♦8+1+0
-3.0Round 9ZHAO167♣x♦K-4+0
-3.0Round 9ZHAO175♥♠3=+0
-3.1Round 4CHINA OPEN 2201NT♣6=+0
-3.1Round 8MIXED UP44♥♠9-1-6
-3.4Round 2FLEISHER202♠♥A-1-6
-3.4Round 10PSZCZOLA301NT♥6+3-2
-3.5Round 9ZHAO183NT♥2-1-6
-3.6Round 7ZIMMERMANN194♥♥4=+0
-3.6Round 10PSZCZOLA263NT♥10=+0
-3.6Round 10PSZCZOLA283♠♥A-1-5
-4.0Round 4CHINA OPEN 2194♥♠3-1-5
-4.2Round 4CHINA OPEN 2143NT♥J+2-2
-5.0Round 5STRUL263♠♦J-1-6
-5.1Round 8MIXED UP84♠♠2=-7
-5.7Round 5STRUL216♣♥2=+2
-6.9Round 10PSZCZOLA274♥♥2=+0
-7.1Round 10PSZCZOLA235♦x♣K-2-8
-9.1Round 2FLEISHER166♠♦A=+0