🇨🇳 CHEN Yichao · CHINA

15rank
+152.1Butler · 256 bds
+0.59per board
±3.9swing
+0.29vs par /bd · #49/138
+0.59adjusted /bd
Butler per round: 6.4 21.1 16.3 -0.6 28.2 12.2 32 1.2 -2.7 10.1 -2 11.8 22.6 20.6 -3.7 -21.4by round

vs par split: bidding +0.15 · play +0.21

Strength of schedule: opponents averaged -0.00/bd (an average draw) → opponent-adjusted +0.59/bd

Card play — on target: opening leads 75.0% #121 of 138 · declarer play 83.1% #15 of 138 · defence 87.4% #43 of 138

Card play by contract type — on target
vs NTvs a suit
Opening leads73.1% (26)76.2% (42)
Declarer play90.5% (21)79.5% (44)
Defence88.0% (50)87.0% (69)

Opening leads by suit led: ♠ 80.0% (20) · ♥ 57.9% (19) · ♦ 92.9% (14) · ♣ 73.3% (15)

vs par by strain: NT +1.24 (91) · a suit -0.14 (164)

vs par by level: part-score +0.19 (90) · game +1.12 (147) · slam -5.11 (18)

By role: declaring +0.92/bd (-1.88 vs par · 137) · defending +0.22/bd (+2.80 vs par · 119)

By vulnerability: vulnerable +0.53/bd (+0.29 vs par · 128) · not vulnerable +0.66/bd (+0.30 vs par · 128)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1B.FuC.Pellegrini – S.RoccaOpen16+6.4+0.40-1.56
Round 2B.FuJ.Castillo – J.OchoaOpen16+21.1+1.32+0.81
Round 5B.FuB.Dehaye – I.DewasmeOpen16+16.3+1.02-0.19
Round 6B.FuC.Huang – M.WangClosed16-0.6-0.04+3.00
Round 7B.FuT.Edis – E.EdisClosed16+28.2+1.76+1.00
Round 8B.FuG.Manara – D.AttanasioClosed16+12.2+0.76+1.50
Round 11B.FuP.Butryn – N.SakowskaOpen16+32.0+2.00+1.56
Round 12B.FuH.Sellami – M.LakhdharOpen16+1.2+0.07-0.69
Round 13B.FuD.Hachem – A.KhedrOpen16-2.7-0.17+1.00
Round 14B.FuR.Cooper – B.ThompsonClosed16+10.1+0.63+1.31
Round 16B.FuP.Gruenke – M.EggelingClosed16-2.0-0.12-1.50
Round 18B.FuS.Robinson – Z.LamOpen16+11.8+0.74+0.81
Round 19B.FuM.Karmarkar – S.KarmarkarOpen16+22.6+1.41+0.12
Round 20B.FuW.Burrows – C.MiaoClosed16+20.6+1.29+0.31
Round 21B.FuR.Mihai – G.MihaiClosed16-3.7-0.23+1.38
Round 22B.FuJ.Wolpert – S.WeinsteinClosed16-21.4-1.34-4.19

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
+11.3Round 11🇵🇱 POLAND136♠♣Q=+1
+10.9Round 8🇮🇹 ITALY313NT♠2=+11
+10.5Round 21🇷🇴 ROMANIA223NT♠K=+0
+10.0Round 11🇵🇱 POLAND94♠x♣A-1+11
+9.8Round 2🇨🇴 COLOMBIA224♥♣8-1+10
+9.1Round 5🇧🇪 BELGIUM36♠♥5=+0
+8.5Round 2🇨🇴 COLOMBIA283♦♣Q=-1
+8.3Round 16🇩🇪 GERMANY176♦♣A=+0
+8.1Round 19🇮🇳 INDIA43NT♠6=+12
+7.8Round 1🇦🇷 ARGENTINA114♥♦10-2+11
+7.8Round 21🇷🇴 ROMANIA283NT♦5-2+12
+7.1Round 20🇳🇿 NEW ZEALAND32♥x♠A-4+4
+7.0Round 12🇹🇳 TUNISIA283NT♦7-1+6
+7.0Round 20🇳🇿 NEW ZEALAND105♣♥Q=+0
+6.9Round 19🇮🇳 INDIA33NT♥10+1+1
+6.7Round 1🇦🇷 ARGENTINA65♣♦A=+7
+6.7Round 7🇦🇪 UAE112♠♣5=+11
+6.6Round 7🇦🇪 UAE133NT♣8+2+1
+6.6Round 20🇳🇿 NEW ZEALAND145♣♥K=+0
+6.3Round 8🇮🇹 ITALY176♣♠A=+3
+6.3Round 20🇳🇿 NEW ZEALAND125♣x♣2=+4
+5.9Round 11🇵🇱 POLAND147♦♣4=-2
+5.9Round 22🇺🇸 USA196♥♠10=-13
+5.7Round 11🇵🇱 POLAND85♦♣A-1+6
+5.6Round 12🇹🇳 TUNISIA304♠x♥9-2+5
+5.6Round 13🇪🇬 EGYPT74♠♣7-1+12
+5.3Round 8🇮🇹 ITALY304♠x♥A-1+5
+5.3Round 20🇳🇿 NEW ZEALAND73NT♠8-1+12
+5.2Round 20🇳🇿 NEW ZEALAND83NT♣7-2+5
+4.9Round 5🇧🇪 BELGIUM113♠♣K=+0
+4.9Round 7🇦🇪 UAE65♦x♥6-1+6
+4.8Round 7🇦🇪 UAE154♥♠4-1-1
+4.7Round 1🇦🇷 ARGENTINA33♦♠A-2+0
+4.7Round 5🇧🇪 BELGIUM133♥♣A=+7
+4.7Round 6🇨🇦 CANADA214♣♥K-4+15
+4.7Round 11🇵🇱 POLAND163NT♥J+1+0
+4.7Round 12🇹🇳 TUNISIA314♠♦10=+0
+4.7Round 18🇸🇬 SINGAPORE322♠♣Q+1-7
+4.6Round 14🇦🇺 AUSTRALIA271NT♣J-3+2
+4.5Round 12🇹🇳 TUNISIA224♥♠8-3+7
+4.5Round 14🇦🇺 AUSTRALIA233NT♠J=-1
+4.5Round 19🇮🇳 INDIA132♠♣K=+6
+4.3Round 6🇨🇦 CANADA233NT♠4-1+12
+4.2Round 2🇨🇴 COLOMBIA243♥♠A+2+6
+4.2Round 11🇵🇱 POLAND113NT♥J-3+6
+4.0Round 1🇦🇷 ARGENTINA42NT♣3-1+6
+4.0Round 7🇦🇪 UAE84♥♦7-1+5
+4.0Round 19🇮🇳 INDIA26♣♦2=+0
+3.9Round 7🇦🇪 UAE15♥♥2+1+11
+3.9Round 8🇮🇹 ITALY245♥x♠A-3+2
+3.9Round 14🇦🇺 AUSTRALIA243NT♥2-2+9
+3.7Round 18🇸🇬 SINGAPORE223NT♦10-2+13
+3.6Round 19🇮🇳 INDIA74♠♥A+2+13
+3.5Round 14🇦🇺 AUSTRALIA305♥♦A+1-1
+3.5Round 21🇷🇴 ROMANIA213NT♣J=-1
+3.4Round 2🇨🇴 COLOMBIA324♠♥10+2+1
+3.4Round 8🇮🇹 ITALY284♥♦A-1+5
+3.2Round 8🇮🇹 ITALY253NT♥9-2+7
+3.2Round 16🇩🇪 GERMANY221NT♥6=+8
+3.2Round 18🇸🇬 SINGAPORE172♥♠A+1+0
+3.0Round 2🇨🇴 COLOMBIA293NT♥2+2+1
+3.0Round 20🇳🇿 NEW ZEALAND112♥♥6-2-1
+2.9Round 7🇦🇪 UAE92♠♣K=+6
+2.9Round 11🇵🇱 POLAND122♠♥Q=+5
+2.9Round 13🇪🇬 EGYPT33NT♥J+3-13
+2.9Round 13🇪🇬 EGYPT132NT♣J-2+2
+2.9Round 14🇦🇺 AUSTRALIA284♥♠K-1+6
+2.8Round 18🇸🇬 SINGAPORE181NT♥5-1+5
+2.7Round 16🇩🇪 GERMANY193♦♥5-1+4
+2.7Round 18🇸🇬 SINGAPORE193NT♥5+2+2
+2.7Round 18🇸🇬 SINGAPORE263♠♥5-3+8
+2.7Round 19🇮🇳 INDIA164♦x♣2-2+0
+2.6Round 5🇧🇪 BELGIUM104♥♦J=+0
+2.6Round 13🇪🇬 EGYPT54♦♣2-1+0
+2.5Round 1🇦🇷 ARGENTINA13NT♠6=+0
+2.5Round 6🇨🇦 CANADA303NT♥4+1+0
+2.5Round 14🇦🇺 AUSTRALIA253NT♥4=+11
+2.5Round 20🇳🇿 NEW ZEALAND62♠♣A=+0
+2.3Round 8🇮🇹 ITALY206♠♦A=+0
+2.3Round 18🇸🇬 SINGAPORE273NT♠4-1+10
+2.3Round 22🇺🇸 USA171NT♣J-3+5
+2.2Round 5🇧🇪 BELGIUM123NT♥J=+0
+2.2Round 6🇨🇦 CANADA254♦♠A-2+5
+2.2Round 16🇩🇪 GERMANY283♥♠6=+0
+2.2Round 19🇮🇳 INDIA123♣♠K+1-10
+2.0Round 5🇧🇪 BELGIUM155♣♥9+1+13
+2.0Round 21🇷🇴 ROMANIA174♥♣K+2+11
+2.0Round 21🇷🇴 ROMANIA323NT♦3+1+4
+1.9Round 22🇺🇸 USA185♥♦4-1+5
+1.8Round 2🇨🇴 COLOMBIA182♦♥J+1+0
+1.8Round 14🇦🇺 AUSTRALIA291NT♦3+1+0
+1.7Round 11🇵🇱 POLAND103♠♣6+1+1
+1.7Round 19🇮🇳 INDIA84♠♣5+2+1
+1.6Round 5🇧🇪 BELGIUM83♠♥5=+0
+1.6Round 8🇮🇹 ITALY271NT♣10-1+2
+1.5Round 12🇹🇳 TUNISIA214♠♦J+1+0
+1.4Round 19🇮🇳 INDIA104♠♠3+2+1
+1.3Round 2🇨🇴 COLOMBIA202♠♦4+1+0
+1.3Round 6🇨🇦 CANADA284♥♠6+1+1
+1.3Round 12🇹🇳 TUNISIA233♥♠10=-10
+1.3Round 13🇪🇬 EGYPT12NT♦6=+5
+1.3Round 13🇪🇬 EGYPT123NT♠Q+2+1
+1.3Round 16🇩🇪 GERMANY181NT♥6=-1
+1.3Round 21🇷🇴 ROMANIA185♦♣Q=+0
+1.2Round 2🇨🇴 COLOMBIA254♥♦9+1+0
+1.2Round 2🇨🇴 COLOMBIA314NT♥10+1+0
+1.2Round 7🇦🇪 UAE43NT♦8+1-1
+1.2Round 21🇷🇴 ROMANIA264♠♦A+2+1
+1.2Round 22🇺🇸 USA164♥♣9+2+11
+1.1Round 13🇪🇬 EGYPT83NT♦2=+14
+1.1Round 18🇸🇬 SINGAPORE213NT♠5+2+0
+1.1Round 20🇳🇿 NEW ZEALAND44♠♦7+1+13
+1.0Round 5🇧🇪 BELGIUM64♠♥J=+11
+1.0Round 8🇮🇹 ITALY192NT♠Q=+1
+1.0Round 13🇪🇬 EGYPT43NT♠2=+0
+1.0Round 16🇩🇪 GERMANY242♠♣7+1+0
+0.9Round 7🇦🇪 UAE142♠♥9=+0
+0.9Round 8🇮🇹 ITALY292♠♦9+3+2
+0.9Round 12🇹🇳 TUNISIA174♠♦A+1+0
+0.9Round 16🇩🇪 GERMANY213♣♠5-1-1
+0.9Round 16🇩🇪 GERMANY325♠♦K=+4
+0.9Round 22🇺🇸 USA133♠♦3+1-10
+0.8Round 5🇧🇪 BELGIUM74♥♣10+1+0
+0.8Round 7🇦🇪 UAE123NT♥3=+0
+0.8Round 14🇦🇺 AUSTRALIA202♣♠K+2+1
+0.8Round 14🇦🇺 AUSTRALIA262NT♣Q=+6
+0.8Round 16🇩🇪 GERMANY205♥♦A+1+1
+0.7Round 1🇦🇷 ARGENTINA92NT♠4-1+5
+0.7Round 6🇨🇦 CANADA193NT♣10+2+10
+0.7Round 6🇨🇦 CANADA323NT♦K+1+11
+0.7Round 13🇪🇬 EGYPT24♥♣10-2+11
+0.7Round 18🇸🇬 SINGAPORE243♦♣A-1+2
+0.6Round 6🇨🇦 CANADA312♦♣4+2+10
+0.6Round 11🇵🇱 POLAND33NT♠4+1+0
+0.6Round 21🇷🇴 ROMANIA314♠♦5=-1
+0.5Round 2🇨🇴 COLOMBIA193NT♦7=+1
+0.4Round 1🇦🇷 ARGENTINA163NT♠9+2-12
+0.4Round 5🇧🇪 BELGIUM14♥♥8+1-11
+0.4Round 14🇦🇺 AUSTRALIA313♣♦K=-1
+0.4Round 16🇩🇪 GERMANY313NT♠3+1+1
+0.3Round 6🇨🇦 CANADA292♥♦J=+0
+0.2Round 20🇳🇿 NEW ZEALAND94♠♣7=+0
+0.1Round 1🇦🇷 ARGENTINA56♠x♦K-2-5
-0.0Round 1🇦🇷 ARGENTINA103NT♦7+1+0
-0.0Round 1🇦🇷 ARGENTINA121NT♠8-2+1
-0.0Round 2🇨🇴 COLOMBIA215♠♣K=+13
-0.0Round 11🇵🇱 POLAND13NT♥6+2+11
+0.0Round 14🇦🇺 AUSTRALIA212♦♠Q+2-1
-0.0Round 16🇩🇪 GERMANY252♦♦4+1-1
+0.0Round 19🇮🇳 INDIA65♠♦K=+0
-0.0Round 22🇺🇸 USA124♥♠K+2-11
-0.0Round 22🇺🇸 USA152♥♠Q+2+10
-0.2Round 1🇦🇷 ARGENTINA152♠♥2-1+2
-0.2Round 2🇨🇴 COLOMBIA273♦♠7=+1
-0.2Round 5🇧🇪 BELGIUM23♥♠K-2+7
-0.2Round 7🇦🇪 UAE54♥♣4=+13
-0.2Round 8🇮🇹 ITALY214♠x♥K-1+6
-0.3Round 6🇨🇦 CANADA173NT♣10+1+1
-0.3Round 22🇺🇸 USA1132♦♦J+1-1
-0.4Round 5🇧🇪 BELGIUM94♠♦10=-1
-0.5Round 13🇪🇬 EGYPT155♣♠A+1-2
-0.6Round 6🇨🇦 CANADA243NT♦2+1+0
-0.6Round 6🇨🇦 CANADA265♦♠J=+0
-0.6Round 11🇵🇱 POLAND42♥♦10+1+0
-0.6Round 12🇹🇳 TUNISIA273NT♠4+1-1
-0.6Round 18🇸🇬 SINGAPORE313NT♠J+1+0
-0.7Round 12🇹🇳 TUNISIA243♥♠9=+0
-0.7Round 18🇸🇬 SINGAPORE204♠♣K+2-1
-0.8Round 2🇨🇴 COLOMBIA231NT♦2-1-6
-0.8Round 7🇦🇪 UAE73NT♠7=+0
-0.8Round 11🇵🇱 POLAND74♥♠Q-1+1
-0.8Round 12🇹🇳 TUNISIA253♦♥Q=+0
-0.8Round 18🇸🇬 SINGAPORE251NT♥9=-5
-0.9Round 1🇦🇷 ARGENTINA86NT♠6=-11
-0.9Round 6🇨🇦 CANADA274♥♠K+1+0
-0.9Round 7🇦🇪 UAE34♣♠A-1-5
-0.9Round 13🇪🇬 EGYPT163NT♥7=+0
-0.9Round 14🇦🇺 AUSTRALIA324♠♣A+1+0
-1.0Round 19🇮🇳 INDIA55♦♥A-1-6
-1.0Round 20🇳🇿 NEW ZEALAND134♥♠7=+0
-1.1Round 16🇩🇪 GERMANY271NT♥7+1-1
-1.2Round 11🇵🇱 POLAND155♠♥8+1-11
-1.2Round 13🇪🇬 EGYPT103NT♣Q+2-2
-1.2Round 21🇷🇴 ROMANIA242NT♠J=+0
-1.3Round 2🇨🇴 COLOMBIA262♦♥K=+1
-1.3Round 5🇧🇪 BELGIUM54♠♣10+1+0
-1.3Round 7🇦🇪 UAE101NT♠10-1-5
-1.3Round 13🇪🇬 EGYPT91NT♠4-2-5
-1.3Round 18🇸🇬 SINGAPORE283NT♠6=+2
-1.3Round 22🇺🇸 USA1145♣♠3+1-11
-1.4Round 12🇹🇳 TUNISIA194♠♥K+1-1
-1.4Round 19🇮🇳 INDIA153♥♥9+1-1
-1.5Round 19🇮🇳 INDIA93NT♦4+1+0
-1.5Round 20🇳🇿 NEW ZEALAND23NT♣2+2+0
-1.6Round 7🇦🇪 UAE163♦♦10+1-11
-1.6Round 16🇩🇪 GERMANY235♣♥4-1-12
-1.6Round 21🇷🇴 ROMANIA192♥♣A+3+6
-1.7Round 1🇦🇷 ARGENTINA143NT♥2=-7
-1.7Round 22🇺🇸 USA143NT♦6=-2
-1.7Round 22🇺🇸 USA111Adj.♠10-15
-1.8Round 12🇹🇳 TUNISIA295♠x♣K-2+0
-1.9Round 19🇮🇳 INDIA145♥♥5=-4
-2.0Round 18🇸🇬 SINGAPORE294♠♥6-1-12
-2.1Round 21🇷🇴 ROMANIA274♠♥A=+0
-2.1Round 22🇺🇸 USA112NT♠Q-1-4
-2.2Round 8🇮🇹 ITALY182♠♥2=+0
-2.2Round 11🇵🇱 POLAND63♥♦K=+0
-2.2Round 14🇦🇺 AUSTRALIA193NT♠7+1+0
-2.3Round 12🇹🇳 TUNISIA263NT♥8-1-6
-2.4Round 12🇹🇳 TUNISIA183♣♠K-2+0
-2.8Round 20🇳🇿 NEW ZEALAND153♦♦4=+0
-3.0Round 19🇮🇳 INDIA13♠♥8+1-6
-3.3Round 5🇧🇪 BELGIUM165♠x♥K-1-12
-3.3Round 18🇸🇬 SINGAPORE231NT♥2-1+0
-3.4Round 14🇦🇺 AUSTRALIA225♣x♦A-1+0
-3.4Round 18🇸🇬 SINGAPORE303♠♥9-1-4
-3.5Round 8🇮🇹 ITALY233NT♦2=+1
-3.5Round 21🇷🇴 ROMANIA236NT♥8=+13
-3.7Round 5🇧🇪 BELGIUM41NTx♦A=-3
-3.7Round 7🇦🇪 UAE24♥♣10+2-14
-3.7Round 19🇮🇳 INDIA116♥x♦A-1-5
-3.7Round 22🇺🇸 USA1153♦♣10+3-13
-3.8Round 6🇨🇦 CANADA224♠♥5-1-13
-3.9Round 11🇵🇱 POLAND22♥♥K-2-5
-3.9Round 14🇦🇺 AUSTRALIA174♥♥5+2-1
-4.0Round 6🇨🇦 CANADA202♠♣5-3+7
-4.1Round 5🇧🇪 BELGIUM143♠♠2=-14
-4.3Round 13🇪🇬 EGYPT111NT♦6+1-6
-4.5Round 2🇨🇴 COLOMBIA303NT♣2+1-7
-4.8Round 21🇷🇴 ROMANIA303♦♥5+1-1
-5.0Round 8🇮🇹 ITALY223♣♥J-1-5
-5.1Round 1🇦🇷 ARGENTINA74♥♣A=-9
-5.1Round 21🇷🇴 ROMANIA204♠♥J=+0
-5.2Round 13🇪🇬 EGYPT145♥x♠Q=+7
-5.2Round 14🇦🇺 AUSTRALIA184♥x♠A-2-9
-5.2Round 22🇺🇸 USA1123NT♥7=+0
-5.4Round 1🇦🇷 ARGENTINA24♠♦5-1-10
-5.5Round 20🇳🇿 NEW ZEALAND15♥x♦Q=-11
-5.7Round 16🇩🇪 GERMANY263NT♦A-1-6
-5.7Round 20🇳🇿 NEW ZEALAND56♥♦7-2-11
-6.0Round 21🇷🇴 ROMANIA253NT♦7-1-12
-6.2Round 12🇹🇳 TUNISIA323NT♠A=+1
-6.3Round 11🇵🇱 POLAND53NT♦3=+1
-7.0Round 2🇨🇴 COLOMBIA174♥♠K=-7
-7.1Round 16🇩🇪 GERMANY306♥♠3-1-14
-7.2Round 1🇦🇷 ARGENTINA132♥♠K-2-3
-7.2Round 20🇳🇿 NEW ZEALAND162♥♦7=-10
-7.7Round 6🇨🇦 CANADA186NT♦J-2-11
-7.8Round 8🇮🇹 ITALY266♦♣A=-13
-7.9Round 8🇮🇹 ITALY323NT♠Q=-3
-8.1Round 12🇹🇳 TUNISIA206♣♦A-1-12
-8.2Round 16🇩🇪 GERMANY293NT♥J-1-6
-8.3Round 21🇷🇴 ROMANIA294♠♥A=-10
-8.5Round 22🇺🇸 USA1164♠♥2=-6
-8.7Round 13🇪🇬 EGYPT65♠x♥9-2-8
-9.1Round 22🇺🇸 USA1106♦♥2-1-12