CHEN Yong · DONGFENG AUTO CO LTD

257rank
+8.2Butler · 90 bds
+0.09per board
±4.4swing
-0.22vs par /bd · #374/567
-0.12adjusted /bd
Butler per round: 13.1 2.2 -3 3.6 8.5 4.7 -10.9 -1.8 -8.2by round

vs par split: bidding -0.61 · play +0.39

Strength of schedule: opponents averaged -0.21/bd (an easy draw) → opponent-adjusted -0.12/bd

Card play — on target: opening leads 66.7% #528 of 567 · declarer play 82.4% #158 of 567 · defence 90.5% #40 of 567

Card play by contract type — on target
vs NTvs a suit
Opening leads100.0% (2)62.5% (16)
Declarer play77.8% (9)87.5% (8)
Defence77.8% (9)93.9% (33)

Opening leads by suit led: ♠ 50.0% (6) · ♥ 100.0% (1) · ♦ 80.0% (5) · ♣ 66.7% (6)

vs par by strain: NT -0.54 (26) · a suit -0.09 (64)

vs par by level: part-score +0.98 (41) · game -1.61 (44) · slam +2.20 (5)

By role: declaring -0.27/bd (-1.65 vs par · 48) · defending +0.51/bd (+1.41 vs par · 42)

By vulnerability: vulnerable -0.21/bd (-0.64 vs par · 45) · not vulnerable +0.39/bd (+0.20 vs par · 45)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 2G.ChenE.Mcgowan – F.McquakerOpen10+13.1+1.31+2.80
Round 3G.ChenA.Bhattacharjee – D.SantraOpen10+2.2+0.22-1.30
Round 5G.ChenP.Ravenna – M.ThomaClosed10-3.0-0.30+0.40
Round 7G.ChenM.Park – I.HwangOpen10+3.6+0.36-1.70
Round 8G.ChenB.Tang – D.CuiOpen10+8.5+0.85+0.90
Round 10G.ChenA.Braithwaite – A.De LiveraOpen10+4.7+0.47+3.00
Round 12G.ChenT.Chodchoy – T.JitngamkusolOpen10-10.9-1.09-0.90
Round 13G.ChenS.Yaisawang – M.YaisawangOpen10-1.8-0.18-1.70
Round 15G.ChenJ.Lu – J.LiOpen10-8.2-0.82-3.50

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
+10.2Round 13BANGKOK MIND SPORT23NT♠Q=+3
+9.5Round 10AUSTRALIA MIXED63NT♥8=+10
+8.2Round 7NEWB72♣x♠2-2+9
+7.7Round 2SCOTMARK204♠♣9-2+12
+7.7Round 3INDIA OPEN274♥♠2-1+8
+7.5Round 2SCOTMARK164♦♦9-2+6
+6.5Round 5BRAZIL Mixed174♠♣J-3+7
+6.1Round 8METALLURGY FED193NT♠2=+0
+5.8Round 10AUSTRALIA MIXED72NT♦7+2+9
+5.5Round 7NEWB64♦♥3+1+6
+5.4Round 15TIANYA BRIDGE FATE231NT♠A+2+6
+4.6Round 2SCOTMARK123♥♣A=+12
+4.6Round 7NEWB33NT♥10-2+6
+4.5Round 13BANGKOK MIND SPORT86♦♠A=+0
+4.1Round 3INDIA OPEN232♠♣A+1+1
+3.8Round 3INDIA OPEN285♦x♥9-2+2
+3.7Round 5BRAZIL Mixed122♠♦J-1+5
+3.6Round 8METALLURGY FED124♥♦K+2+11
+3.4Round 8METALLURGY FED201NT♥2=-1
+3.3Round 2SCOTMARK154♥♠Q=+6
+3.1Round 15TIANYA BRIDGE FATE214♥♠A-1+6
+2.8Round 13BANGKOK MIND SPORT34♣♥2+1+10
+2.7Round 7NEWB22♠♣A=+5
+2.6Round 15TIANYA BRIDGE FATE263♥♠A-4-6
+2.4Round 5BRAZIL Mixed152♥♠A+1+6
+2.3Round 8METALLURGY FED133♠♦8-2+2
+2.3Round 12BBC THAILAND243NT♠2-2+8
+2.1Round 3INDIA OPEN253♥♦A=+6
+1.9Round 3INDIA OPEN213NT♦3=-2
+1.9Round 7NEWB14♥♣8-2+0
+1.9Round 8METALLURGY FED175♦♥9-2+5
+1.7Round 3INDIA OPEN264♠x♦A-3-12
+1.7Round 5BRAZIL Mixed183NT♠6-1+6
+1.6Round 2SCOTMARK131NT♦K+1+0
+1.5Round 10AUSTRALIA MIXED53♠♦3-1+5
+1.5Round 12BBC THAILAND262♥♦A+2+1
+1.4Round 10AUSTRALIA MIXED33♥♣6-1+7
+1.2Round 12BBC THAILAND232♥♣2+2+1
+1.1Round 8METALLURGY FED162♥♣A=+5
+0.9Round 12BBC THAILAND302♦♦K-1-3
+0.8Round 15TIANYA BRIDGE FATE243NT♠A+3+1
+0.7Round 12BBC THAILAND284♠♦J+1-11
+0.6Round 13BANGKOK MIND SPORT63♥♣7+1-6
+0.5Round 8METALLURGY FED153NT♠9+1+0
+0.5Round 15TIANYA BRIDGE FATE253NT♠A=+1
+0.4Round 5BRAZIL Mixed202♠♣2+1+0
+0.3Round 3INDIA OPEN304♥♦6+1+0
+0.2Round 5BRAZIL Mixed112♠♠4+1+0
+0.1Round 3INDIA OPEN223NT♥5-1+5
+0.1Round 5BRAZIL Mixed163♣♠Q=+7
-0.0Round 8METALLURGY FED115♠♥K=+0
+0.0Round 8METALLURGY FED143NT♣6+2+0
-0.6Round 2SCOTMARK143♦♥7=-5
-1.0Round 10AUSTRALIA MIXED43♠♥3-1+1
-1.0Round 10AUSTRALIA MIXED86NT♠7+1+11
-1.0Round 13BANGKOK MIND SPORT74♠♣2=+1
-1.2Round 2SCOTMARK183♥♣3-1-4
-1.3Round 2SCOTMARK173♠♠5+1+6
-1.3Round 7NEWB83NT♦Q=-11
-1.5Round 10AUSTRALIA MIXED91NT♥K=-5
-1.7Round 12BBC THAILAND211♥♠K=-1
-1.8Round 12BBC THAILAND273♠♣J=-7
-1.8Round 13BANGKOK MIND SPORT43♥♠6=-1
-2.2Round 13BANGKOK MIND SPORT12♥♦Q+2-6
-2.4Round 12BBC THAILAND226♣♠9=+2
-2.5Round 15TIANYA BRIDGE FATE284♠♦7+2-11
-2.6Round 12BBC THAILAND256♥♣10=+11
-2.7Round 7NEWB45♦♣4=-3
-2.7Round 10AUSTRALIA MIXED24♠♣J=-3
-2.8Round 7NEWB53NT♥3-1-5
-2.8Round 15TIANYA BRIDGE FATE305♣♣8-1-5
-2.9Round 5BRAZIL Mixed141NT♦J+2-7
-3.2Round 15TIANYA BRIDGE FATE294♠♠5-1-9
-3.3Round 2SCOTMARK115♦♥9=+1
-3.6Round 10AUSTRALIA MIXED12♠♦7-2+0
-3.7Round 10AUSTRALIA MIXED103♠♠J-1-5
-4.3Round 13BANGKOK MIND SPORT54♥♠9=-11
-4.5Round 7NEWB105♦♥A-2-8
-4.9Round 13BANGKOK MIND SPORT104♠x♥2-1-2
-5.2Round 2SCOTMARK193NT♠2-1-6
-5.2Round 15TIANYA BRIDGE FATE273♠♠A=-6
-5.7Round 13BANGKOK MIND SPORT92NT♠6+3-5
-6.2Round 5BRAZIL Mixed194♠♣A=-7
-6.7Round 3INDIA OPEN244♦♥4=-8
-6.9Round 15TIANYA BRIDGE FATE223NT♠A-1-12
-8.0Round 7NEWB93NT♠2-1-16
-8.9Round 5BRAZIL Mixed134♠♦9-2-13
-9.0Round 12BBC THAILAND293NT♦K=-10
-10.4Round 8METALLURGY FED186♠♣K-1-13
-12.8Round 3INDIA OPEN294♥♠A=-13