🇨🇳 ZHENG Yixin · CHINA

51rank
+35.2Butler · 224 bds
+0.16per board
±3.8swing
+0.03vs par /bd · #67/138
+0.25adjusted /bd
Butler per round: -8.3 9.6 29.9 -0.6 9.4 0.9 -5.9 -16.6 -13.8 1.2 -12.2 15.3 7.9 -8.7 28.7 -1.6by round

vs par split: bidding +0.17 · play -0.14

Strength of schedule: opponents averaged +0.09/bd (a tough draw) → opponent-adjusted +0.25/bd

Card play — on target: opening leads 83.6% #34 of 138 · declarer play 79.0% #36 of 138 · defence 88.9% #36 of 138

Bidding activity — not a pass: 42.6% #72 of 138 (254/596)

Card play by contract type — on target
vs NTvs a suit
Opening leads64.3% (14)90.2% (41)
Declarer play78.9% (19)79.1% (43)
Defence91.2% (34)87.8% (74)

Opening leads by suit led: ♠ 84.6% (13) · ♥ 81.8% (11) · ♦ 73.7% (19) · ♣ 100.0% (12)

vs par by strain: NT +0.19 (72) · a suit -0.05 (152)

vs par by level: part-score -0.18 (83) · game -0.17 (127) · slam +3.07 (14)

By role: declaring +0.06/bd (-2.16 vs par · 116) · defending +0.26/bd (+2.38 vs par · 108)

By vulnerability: vulnerable +0.84/bd (+0.82 vs par · 112) · not vulnerable -0.53/bd (-0.77 vs par · 112)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 2Y.LiangI.Thomson – T.BrownOpen14-8.3-0.59+2.79
Round 3Y.LiangA.Morath – B.EfraimssonOpen14+9.6+0.69+1.71
Round 4Y.LiangW.Fornasari – L.PalazzoOpen14+29.9+2.14+2.14
Round 7Y.LiangN.Stuckey – D.CrombieClosed14-0.6-0.04-1.21
Round 8Y.LiangD.Jacob – P.KlimowiczOpen14+9.4+0.67-0.71
Round 10Y.LiangG.Cohner – C.DaehrClosed14+0.9+0.06-1.50
Round 11Y.LiangG.Duboin – G.FaillaClosed14-5.9-0.42+2.07
Round 12Y.LiangK.Yamada – T.ImakuraOpen14-16.6-1.19-0.86
Round 13Y.LiangB.Levin – E.RodwellOpen14-13.8-0.99-2.86
Round 14Y.LiangS.Ahmed – D.HanzalaClosed14+1.2+0.09+0.36
Round 15Y.LiangJ.Meckstroth – M.KamilOpen14-12.2-0.87-1.71
Round 18Y.LiangK.Belrhiti Alaoui – M.BerradaOpen14+15.3+1.09+1.50
Round 19Y.LiangE.Rynning – A.FarstadOpen14+7.9+0.56+0.29
Round 20Y.LiangJ.Shivdasani – B.SatyanarayanaClosed14-8.7-0.62-2.79
Round 21Y.LiangM.Abecassis – H.VinciguerraOpen14+28.7+2.05+0.29
Round 23Y.LiangF.Terraneo – A.BabschOpen14-1.6-0.11+0.93

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
+13.1Round 4🇦🇷 ARGENTINA264♠x♥A=+14
+11.2Round 21🇫🇷 FRANCE43♦x♠Q-3+5
+10.5Round 8🇨🇦 CANADA216NT♦T-1+13
+10.0Round 7🇳🇿 NEW ZEALAND46♠♥A+1+1
+10.0Round 19🇳🇴 NORWAY106♠x♣Q-1+20
+9.9Round 4🇦🇷 ARGENTINA224♠x♠A-3+9
+9.3Round 18🇲🇦 MOROCCO234♠♦4=+10
+9.1Round 8🇨🇦 CANADA195♣x♥6-5+10
+8.8Round 21🇫🇷 FRANCE96♥x♣T=+6
+8.7Round 10🇩🇪 GERMANY183NT♥A=+11
+8.6Round 4🇦🇷 ARGENTINA254♥♣6=+3
+7.8Round 12🇯🇵 JAPAN186♦♠A-1+10
+6.6Round 21🇫🇷 FRANCE53NT♠4=+7
+6.5Round 4🇦🇷 ARGENTINA245♥♦A-3+7
+6.1Round 7🇳🇿 NEW ZEALAND134♠♠2-1+12
+6.1Round 10🇩🇪 GERMANY282NT♣7-2+8
+6.0Round 3🇸🇪 SWEDEN33NT♠6-1+10
+5.6Round 3🇸🇪 SWEDEN143NT♥7-2+11
+5.4Round 21🇫🇷 FRANCE74♠x♥5-3+7
+5.0Round 14🇧🇩 BANGLADESH182NT♦6+2+10
+5.0Round 18🇲🇦 MOROCCO204♦♠A=+12
+4.6Round 18🇲🇦 MOROCCO213♥♦5+1+8
+4.4Round 19🇳🇴 NORWAY52♠♣T=+6
+4.3Round 10🇩🇪 GERMANY255♠x♥J-1+6
+4.3Round 11🇮🇹 ITALY81NT♦3=+6
+4.2Round 4🇦🇷 ARGENTINA215♣♦A=+7
+4.0Round 4🇦🇷 ARGENTINA191♠♣T+1-1
+3.9Round 15🇺🇸 USA193NT♥J-1+6
+3.9Round 15🇺🇸 USA1114♦x♣3-2+0
+3.8Round 18🇲🇦 MOROCCO194♠♥7+2+14
+3.7Round 10🇩🇪 GERMANY214♠♦4=+0
+3.6Round 18🇲🇦 MOROCCO264♠♥5=+0
+3.5Round 23🇦🇹 AUSTRIA126♥♦6-1+17
+3.3Round 2🇦🇺 AUSTRALIA153NT♠9+2+12
+3.3Round 14🇧🇩 BANGLADESH194♥♣J+1+0
+3.0Round 8🇨🇦 CANADA162♦x♣T-2-7
+3.0Round 11🇮🇹 ITALY92♦♦6-1+5
+2.7Round 11🇮🇹 ITALY143NT♥9=+3
+2.7Round 13🇺🇸 USA256♠♣A=+0
+2.5Round 3🇸🇪 SWEDEN71♠♦A+1+9
+2.5Round 23🇦🇹 AUSTRIA24♠♥T-3+2
+2.4Round 2🇦🇺 AUSTRALIA201NT♠6+2+10
+2.4Round 18🇲🇦 MOROCCO255♦x♠3-1+0
+2.3Round 2🇦🇺 AUSTRALIA163NT♠T-3+6
+2.3Round 3🇸🇪 SWEDEN23NT♥T-1+6
+2.3Round 14🇧🇩 BANGLADESH254♥♦9-1+5
+2.2Round 3🇸🇪 SWEDEN132♦♥6-1+1
+2.2Round 18🇲🇦 MOROCCO284♥♦A+1+0
+2.1Round 19🇳🇴 NORWAY14♥♠4=+0
+2.0Round 23🇦🇹 AUSTRIA94NT♥2+1+0
+1.9Round 11🇮🇹 ITALY11NT♣5=-7
+1.7Round 7🇳🇿 NEW ZEALAND62NT♠2+1+1
+1.6Round 3🇸🇪 SWEDEN122♠♣4+2-6
+1.6Round 4🇦🇷 ARGENTINA274♣♥8-2-5
+1.6Round 19🇳🇴 NORWAY134♠♦2+1+0
+1.6Round 20🇮🇳 INDIA161NT♠6=-1
+1.6Round 21🇫🇷 FRANCE32♥♦9=-1
+1.5Round 3🇸🇪 SWEDEN63NT♦4+1-12
+1.4Round 23🇦🇹 AUSTRIA61NT♣3=+5
+1.3Round 3🇸🇪 SWEDEN105♦♣4+1+13
+1.3Round 15🇺🇸 USA1144♥♣A=-1
+1.3Round 21🇫🇷 FRANCE21♦♦3-2+11
+1.2Round 11🇮🇹 ITALY133♥♣Q-1+1
+1.2Round 23🇦🇹 AUSTRIA143♦♠T+1-7
+1.1Round 8🇨🇦 CANADA272♥♦8+2-6
+1.1Round 13🇺🇸 USA244♥♣T+1+0
+1.0Round 2🇦🇺 AUSTRALIA273NT♦4=+2
+1.0Round 3🇸🇪 SWEDEN44♥♠T+3+2
+1.0Round 7🇳🇿 NEW ZEALAND11NT♦K-2+0
+1.0Round 11🇮🇹 ITALY23♥♠A=+0
+1.0Round 13🇺🇸 USA234♥♦T=-1
+1.0Round 14🇧🇩 BANGLADESH222NT♠4-3+0
+0.9Round 2🇦🇺 AUSTRALIA231NT♣5+1+0
+0.9Round 19🇳🇴 NORWAY23NT♠7=+1
+0.9Round 20🇮🇳 INDIA173NT♠4+3-11
+0.8Round 4🇦🇷 ARGENTINA184♥♠9+1-11
+0.8Round 11🇮🇹 ITALY64♥♣7-1+5
+0.8Round 12🇯🇵 JAPAN253NT♣5+2+0
+0.8Round 18🇲🇦 MOROCCO162♥♦K-1-1
+0.8Round 19🇳🇴 NORWAY112♥♦T+1+0
+0.8Round 23🇦🇹 AUSTRIA44♥♦6=+1
+0.7Round 3🇸🇪 SWEDEN53NT♦5+1+1
+0.7Round 8🇨🇦 CANADA234♠♣5+1+0
+0.7Round 10🇩🇪 GERMANY194♠♥5=-11
+0.7Round 21🇫🇷 FRANCE82♠♣J=-1
+0.6Round 7🇳🇿 NEW ZEALAND122♥♣K=+5
+0.6Round 12🇯🇵 JAPAN174♠♥Q+1+0
+0.6Round 14🇧🇩 BANGLADESH203NT♣T=+3
+0.6Round 19🇳🇴 NORWAY73♦♣A+1-10
+0.6Round 20🇮🇳 INDIA264♠♣7+1+0
+0.6Round 21🇫🇷 FRANCE114♠♣K+1+0
+0.5Round 11🇮🇹 ITALY103♥♥6+3+15
+0.5Round 14🇧🇩 BANGLADESH153NT♠9+2+1
+0.4Round 8🇨🇦 CANADA183♥♦8-1-1
+0.4Round 11🇮🇹 ITALY34♠♣T-1+10
+0.4Round 13🇺🇸 USA273NT♦3+1-1
+0.3Round 8🇨🇦 CANADA223NT♠J=+1
+0.3Round 14🇧🇩 BANGLADESH233NT♦5+2+0
+0.3Round 15🇺🇸 USA154♥♦Q=+0
+0.3Round 19🇳🇴 NORWAY33♠♥J=+10
+0.3Round 20🇮🇳 INDIA233NT♦J+2+0
+0.2Round 4🇦🇷 ARGENTINA173NT♥6+1+1
+0.2Round 10🇩🇪 GERMANY164♠♥J+1+11
+0.2Round 20🇮🇳 INDIA223NT♦Q+1-1
+0.1Round 2🇦🇺 AUSTRALIA185♥♠Q+1+13
+0.1Round 8🇨🇦 CANADA253♣♠3=-1
+0.1Round 8🇨🇦 CANADA283♣♦8-1+0
+0.1Round 10🇩🇪 GERMANY172♥♣J=+1
+0.1Round 12🇯🇵 JAPAN224♠♦7=-1
+0.1Round 13🇺🇸 USA284♥♠Q+1+1
+0.1Round 15🇺🇸 USA1104♠♦T+1+0
-0.0Round 2🇦🇺 AUSTRALIA193NT♦T+3+11
+0.0Round 3🇸🇪 SWEDEN113♦♠A+2+6
-0.0Round 12🇯🇵 JAPAN204♠♥5+1-13
-0.0Round 12🇯🇵 JAPAN233♥♦T=+0
-0.0Round 12🇯🇵 JAPAN274♥♠Q=+11
-0.0Round 14🇧🇩 BANGLADESH282♥♦5=-1
+0.0Round 20🇮🇳 INDIA202♥♠6+3+10
+0.0Round 23🇦🇹 AUSTRIA13NT♦J+2+10
+0.0Round 23🇦🇹 AUSTRIA84♥♠T+1+0
-0.1Round 4🇦🇷 ARGENTINA234♠♠7+1+13
-0.1Round 7🇳🇿 NEW ZEALAND33NT♥2+2+0
-0.1Round 7🇳🇿 NEW ZEALAND81NT♣2-1+2
-0.1Round 13🇺🇸 USA2133♣♠J+1+14
-0.1Round 14🇧🇩 BANGLADESH161NT♥3+1+0
-0.1Round 15🇺🇸 USA173♥♥3+1-10
-0.1Round 18🇲🇦 MOROCCO154♥♦2=-1
-0.2Round 7🇳🇿 NEW ZEALAND71NT♠4+2+1
-0.2Round 10🇩🇪 GERMANY263NT♥T=-1
-0.2Round 13🇺🇸 USA263♥♠Q=+0
-0.2Round 20🇮🇳 INDIA153♥♥2=-1
-0.3Round 13🇺🇸 USA223NT♦9=-1
-0.3Round 21🇫🇷 FRANCE62NT♠7-2-9
-0.3Round 23🇦🇹 AUSTRIA33NT♦3+1+0
-0.3Round 23🇦🇹 AUSTRIA131NT♥2-1+1
-0.4Round 2🇦🇺 AUSTRALIA223NT♥7+2+11
-0.4Round 7🇳🇿 NEW ZEALAND113♠♥K-1-4
-0.4Round 20🇮🇳 INDIA215♦♠A+1-13
-0.5Round 8🇨🇦 CANADA202♠♥A=+5
-0.5Round 20🇮🇳 INDIA282♠♦7-1-2
-0.5Round 21🇫🇷 FRANCE134♠♥Q+1+0
-0.6Round 2🇦🇺 AUSTRALIA176NT♥9-1-14
-0.6Round 15🇺🇸 USA142♥♦5=+0
-0.7Round 8🇨🇦 CANADA173NT♠A-3-2
-0.7Round 12🇯🇵 JAPAN194♠♥A=-3
-0.8Round 18🇲🇦 MOROCCO223NT♥3=-1
-0.9Round 19🇳🇴 NORWAY95♦♣K-3+10
-0.9Round 21🇫🇷 FRANCE143♥♦6=-7
-1.0Round 2🇦🇺 AUSTRALIA263NT♠6+1+0
-1.0Round 10🇩🇪 GERMANY204♠♥T=+0
-1.0Round 10🇩🇪 GERMANY232NT♠T+2-9
-1.0Round 13🇺🇸 USA294♠♣3-2-11
-1.0Round 15🇺🇸 USA1126♠♦K=+0
-1.0Round 20🇮🇳 INDIA244♥♣9+1-1
-1.0Round 20🇮🇳 INDIA253NT♦T+3-11
-1.0Round 23🇦🇹 AUSTRIA72♦♥A-1+0
-1.2Round 4🇦🇷 ARGENTINA163NT♥8+1-1
-1.2Round 4🇦🇷 ARGENTINA203♠♥8-1+0
-1.2Round 13🇺🇸 USA2124♥♦5=-3
-1.2Round 14🇧🇩 BANGLADESH174♣♥J=-6
-1.2Round 18🇲🇦 MOROCCO244♥♠K-2-5
-1.2Round 19🇳🇴 NORWAY145♥♠7-2+0
-1.3Round 14🇧🇩 BANGLADESH272♠♦6+1+0
-1.5Round 14🇧🇩 BANGLADESH214♠♦J+1-1
-1.5Round 20🇮🇳 INDIA184♥♦A-1+3
-1.6Round 23🇦🇹 AUSTRIA103♠♣9-2-7
-1.7Round 15🇺🇸 USA1132NT♠3-1-6
-1.7Round 19🇳🇴 NORWAY123NT♠6+1-10
-1.7Round 21🇫🇷 FRANCE14♥♠A-1-4
-1.7Round 21🇫🇷 FRANCE121♠♣Q=+2
-1.8Round 11🇮🇹 ITALY73♣♣3+1+0
-1.9Round 2🇦🇺 AUSTRALIA281NT♥6-1-4
-1.9Round 8🇨🇦 CANADA243♥♦3-1-4
-1.9Round 19🇳🇴 NORWAY65♥x♠K-2+0
-2.0Round 7🇳🇿 NEW ZEALAND103NT♠T=+0
-2.0Round 12🇯🇵 JAPAN164♠♣5+1+0
-2.1Round 8🇨🇦 CANADA154♠♣A+1-8
-2.1Round 18🇲🇦 MOROCCO177NT♠J=+0
-2.2Round 18🇲🇦 MOROCCO276♠x♥A-2-5
-2.3Round 11🇮🇹 ITALY43NT♦2+1-4
-2.3Round 13🇺🇸 USA2144NT♦4+2-14
-2.3Round 15🇺🇸 USA163♦♣Q-1+5
-2.4Round 7🇳🇿 NEW ZEALAND53NT♠J+1-1
-2.4Round 21🇫🇷 FRANCE104♠♥A-1-12
-2.6Round 20🇮🇳 INDIA192♥♣3+2-1
-2.8Round 15🇺🇸 USA133♦♥A+1+0
-2.9Round 10🇩🇪 GERMANY155♥♦K+1-8
-2.9Round 13🇺🇸 USA2112♠♣A+3-12
-3.0Round 14🇧🇩 BANGLADESH241NT♦9-1-5
-3.0Round 19🇳🇴 NORWAY83♥♦6=-7
-3.1Round 3🇸🇪 SWEDEN83NT♥T=+0
-3.1Round 15🇺🇸 USA114♥♣A+1+0
-3.2Round 12🇯🇵 JAPAN262♠♣Q+2-2
-3.3Round 3🇸🇪 SWEDEN93♣♥4-1-6
-3.4Round 7🇳🇿 NEW ZEALAND24♥♠3+2-14
-3.5Round 10🇩🇪 GERMANY221♠♦7+4-10
-3.7Round 12🇯🇵 JAPAN214♥♣2-1-6
-4.0Round 15🇺🇸 USA181NT♦6=-6
-4.1Round 2🇦🇺 AUSTRALIA211NT♥J-5+6
-4.1Round 2🇦🇺 AUSTRALIA254♠♣J-1-5
-4.1Round 19🇳🇴 NORWAY45♦♣9-1-16
-4.3Round 11🇮🇹 ITALY53NT♠T-2-6
-4.5Round 23🇦🇹 AUSTRIA53♠♣A+1-4
-4.7Round 14🇧🇩 BANGLADESH264♠♦4+1-1
-5.1Round 20🇮🇳 INDIA274♠♥Q-1-10
-5.2Round 12🇯🇵 JAPAN154♣♠8=-6
-5.2Round 13🇺🇸 USA2104♥♥T=-3
-5.3Round 23🇦🇹 AUSTRIA116♥♦8=-5
-5.4Round 7🇳🇿 NEW ZEALAND144♥♦5+1-8
-5.5Round 12🇯🇵 JAPAN247♥♣K=+0
-5.6Round 12🇯🇵 JAPAN285♣x♦K-1-2
-5.9Round 13🇺🇸 USA213NT♠T-6-9
-6.0Round 7🇳🇿 NEW ZEALAND92♠♦T=-12
-6.1Round 15🇺🇸 USA124♠♣J-1-12
-6.2Round 2🇦🇺 AUSTRALIA245♦♠K+1-9
-6.2Round 11🇮🇹 ITALY116♦♥6=+0
-6.3Round 10🇩🇪 GERMANY243NT♦2=-7
-7.1Round 11🇮🇹 ITALY123NT♦K=+1
-8.0Round 10🇩🇪 GERMANY275♣x♥6-3-12
-8.2Round 4🇦🇷 ARGENTINA285♥x♠K-3-8
-8.3Round 4🇦🇷 ARGENTINA155♥♦T-1+2
-8.7Round 3🇸🇪 SWEDEN14♥♣Q-2-11
-10.0Round 18🇲🇦 MOROCCO183NT♥K=-10
-10.7Round 8🇨🇦 CANADA264♥♠A=-10