🇸🇬 ZHU Xin Chen · SINGAPORE

38rank
+88.7Butler · 252 bds
+0.35per board
±4.9swing
+0.13vs par /bd · #53/115
+0.39adjusted /bd
Butler per round: 3.8 13.6 30.6 -12.4 -5.1 40.1 15.1 -11.1 -27.5 18.1 -7.8 -12.7 9.9 12.4 21.3 32.1 -17.6 -14.1by round

vs par split: bidding -0.08 · play +0.16

Strength of schedule: opponents averaged +0.04/bd (an average draw) → opponent-adjusted +0.39/bd

Card play — on target: opening leads 76.5% #62 of 115 · declarer play 67.3% #98 of 115 · defence 80.6% #86 of 115

Card play by contract type — on target
vs NTvs a suit
Opening leads68.8% (16)78.8% (52)
Declarer play64.3% (14)68.4% (38)
Defence72.0% (25)82.7% (104)

Opening leads by suit led: ♠ 75.0% (32) · ♥ 72.2% (18) · ♦ 85.7% (7) · ♣ 81.8% (11)

vs par by strain: NT -0.77 (66) · a suit +0.44 (185)

vs par by level: part-score +0.28 (94) · game +0.35 (131) · slam -1.58 (26)

By role: declaring -0.10/bd (-2.29 vs par · 122) · defending +0.78/bd (+2.41 vs par · 130)

By vulnerability: vulnerable +0.18/bd (+0.38 vs par · 126) · not vulnerable +0.52/bd (-0.11 vs par · 126)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1M.ZhouP.Chen – Y.WangClosed14+3.8+0.27-0.43
Round 2M.ZhouT.Libman – A.SpoonerOpen14+13.6+0.97+1.57
Round 3M.ZhouF.Chiarandini – A.GaiottiClosed14+30.6+2.19+3.29
Round 4M.ZhouN.Correa Laguna – J.Zamora VillamizarClosed14-12.4-0.89-0.50
Round 5M.ZhouA.Dhir – W.ZhuOpen14-5.1-0.36-0.36
Round 6M.ZhouD.Cozart – S.McilwainClosed14+40.1+2.86+4.86
Round 7M.ZhouB.Miao – S.GuOpen14+15.1+1.08-0.14
Round 9M.ZhouM.Satriawan – H.FebriyantoOpen14-11.1-0.79-0.71
Round 10M.ZhouO.Rimstedt – M.RimstedtOpen14-27.5-1.96-0.64
Round 11M.ZhouJ.Bernard – B.CombescureOpen14+18.1+1.29+2.00
Round 12M.ZhouBOSE BABHRUBAHAN – KAR SOUVIKClosed14-7.8-0.56-4.00
Round 13M.ZhouP.Man – H.TangOpen14-12.7-0.91-0.93
Round 14M.ZhouA.Zamir – O.ToledanoOpen14+9.9+0.71+1.14
Round 15M.ZhouK.Bossonney – P.CazabonOpen14+12.4+0.89-0.14
Round 17M.ZhouK.Ashraf – A.KhamisOpen14+21.3+1.52+2.43
Round 18M.ZhouR.Westerbeek – M.ScholsClosed14+32.1+2.29+0.21
Round 19M.ZhouM.Chodacki – M.SobczakOpen14-17.6-1.26-3.86
Round 21M.ZhouZ.Grossack – O.KriegelOpen14-14.1-1.01-1.36

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
+17.4Round 17🇪🇬 EGYPT56♥x♦2-6+19
+13.2Round 2🇦🇺 AUSTRALIA63♥x♣9-5+14
+12.4Round 11🇫🇷 FRANCE74♠x♠3-4+14
+12.0Round 6🇨🇦 CANADA74♠♦10=+13
+11.8Round 6🇨🇦 CANADA63NT♠Q-3+13
+11.8Round 13🇭🇰 CHINA HONG KONG94♦♥2-1+5
+10.8Round 15🇨🇱 CHILE13♣x♥3-4+8
+10.7Round 4🇨🇴 COLOMBIA126♥♦J-1+11
+10.6Round 12🇮🇳 INDIA23♠x♠Q-5+10
+10.2Round 3🇮🇹 ITALY46♠♥A-1+13
+10.1Round 17🇪🇬 EGYPT93NT♥Q=+10
+9.8Round 18🇳🇱 NETHERLANDS137♥♠K=+0
+9.7Round 19🇵🇱 POLAND136♦♠3=-2
+9.6Round 1🇹🇼 CHINESE TAIPEI133NT♦5=-1
+9.5Round 17🇪🇬 EGYPT116♣♠4+1+1
+9.4Round 18🇳🇱 NETHERLANDS45♥x♣A-1+9
+9.3Round 14🇮🇱 ISRAEL44♠x♦A+1+10
+7.6Round 14🇮🇱 ISRAEL131♥♠3+4+10
+7.4Round 15🇨🇱 CHILE36♥♦A-1+12
+7.3Round 3🇮🇹 ITALY133♠♥2+1+10
+7.3Round 5🇺🇸 USA 233NT♦7=+0
+7.0Round 15🇨🇱 CHILE24♠x♠3-1-5
+6.7Round 3🇮🇹 ITALY15♠♦A-1+11
+6.7Round 15🇨🇱 CHILE83NT♠3-3+6
+6.6Round 2🇦🇺 AUSTRALIA74♠♣7-1+12
+6.5Round 19🇵🇱 POLAND75♠x♦A-3+7
+6.4Round 18🇳🇱 NETHERLANDS103NTx♣10-2+8
+6.3Round 4🇨🇴 COLOMBIA64♥♥3-2+8
+6.3Round 9🇮🇩 INDONESIA23NT♠3=+10
+6.3Round 11🇫🇷 FRANCE64♠x♦3=+9
+6.3Round 19🇵🇱 POLAND16♠♦3-1+14
+6.0Round 11🇫🇷 FRANCE124♠♣2-1-2
+6.0Round 15🇨🇱 CHILE141♠x♠3-4+8
+5.7Round 5🇺🇸 USA 2113NT♠J=-1
+5.6Round 4🇨🇴 COLOMBIA12♠x♣3-1+7
+5.5Round 18🇳🇱 NETHERLANDS75♦♥4+1+13
+5.3Round 18🇳🇱 NETHERLANDS114♥♠A+1+1
+5.2Round 21🇺🇸 USA 1134♠♥6-3+4
+5.1Round 3🇮🇹 ITALY36♦♦6=-11
+4.8Round 1🇹🇼 CHINESE TAIPEI123NT♠K-1+6
+4.8Round 4🇨🇴 COLOMBIA82♥♥3+1+7
+4.7Round 5🇺🇸 USA 291NT♠3-1+5
+4.7Round 6🇨🇦 CANADA14♠♥J-1+10
+4.7Round 6🇨🇦 CANADA143NT♠3-1+10
+4.5Round 6🇨🇦 CANADA134♠♠3-2+7
+4.4Round 3🇮🇹 ITALY65♥x♦K-4+16
+4.3Round 1🇹🇼 CHINESE TAIPEI63♣x♠3-3-3
+4.2Round 7🇨🇳 CHINA92♥♦5=+5
+4.2Round 14🇮🇱 ISRAEL64♠♣2+2+13
+4.2Round 15🇨🇱 CHILE53♣♠3-3+6
+4.1Round 3🇮🇹 ITALY55♥x♠3-2+11
+4.1Round 7🇨🇳 CHINA21NT♥10+1+5
+4.1Round 10🇸🇪 SWEDEN136♣x♠K-1+13
+4.0Round 11🇫🇷 FRANCE54NT♦10+2+11
+4.0Round 21🇺🇸 USA 163♠♥9+3+5
+3.8Round 7🇨🇳 CHINA54♥♠3-1+5
+3.8Round 12🇮🇳 INDIA54♠♠3-1+5
+3.7Round 6🇨🇦 CANADA21NT♠3-1+5
+3.3Round 2🇦🇺 AUSTRALIA24♥♦Q=-1
+3.3Round 5🇺🇸 USA 2134♥♠3-1+12
+3.2Round 5🇺🇸 USA 253♥♠3=+7
+3.2Round 9🇮🇩 INDONESIA74♠♣3+1+1
+3.1Round 19🇵🇱 POLAND143NT♥8=+0
+2.8Round 2🇦🇺 AUSTRALIA121NT♠10-1+4
+2.8Round 14🇮🇱 ISRAEL37♣♠3=-2
+2.7Round 2🇦🇺 AUSTRALIA12♠♦9=+6
+2.7Round 6🇨🇦 CANADA52♥x♥Q-1+6
+2.7Round 7🇨🇳 CHINA13♥♠2=-4
+2.5Round 6🇨🇦 CANADA102NT♠3+1+10
+2.5Round 21🇺🇸 USA 1103NT♠3+2+1
+2.4Round 15🇨🇱 CHILE43NT♠3+2+0
+2.4Round 17🇪🇬 EGYPT84♦♠A-2+5
+2.4Round 21🇺🇸 USA 1113NT♦10+1+0
+2.3Round 3🇮🇹 ITALY103NT♣Q+3+3
+2.3Round 4🇨🇴 COLOMBIA103NT♠K=+0
+2.3Round 7🇨🇳 CHINA73♦♠10-1-1
+2.3Round 12🇮🇳 INDIA13NT♥3+3-14
+2.2Round 6🇨🇦 CANADA33♦♦3+1+0
+2.1Round 5🇺🇸 USA 214♠♣A-1+4
+2.1Round 7🇨🇳 CHINA113NT♠3+1+1
+2.1Round 7🇨🇳 CHINA123♥♠3=+1
+2.1Round 18🇳🇱 NETHERLANDS22♠♥5+1+0
+2.0Round 9🇮🇩 INDONESIA84♦♣3-1+4
+1.9Round 15🇨🇱 CHILE113♠♥3=+1
+1.9Round 17🇪🇬 EGYPT26♥♦A=+0
+1.8Round 3🇮🇹 ITALY94♥♣2=+0
+1.8Round 11🇫🇷 FRANCE144♠♥3-2+5
+1.7Round 1🇹🇼 CHINESE TAIPEI22♠♠2+3-6
+1.7Round 2🇦🇺 AUSTRALIA104♥♠K-1+6
+1.7Round 6🇨🇦 CANADA45♦x♠3-2-4
+1.6Round 6🇨🇦 CANADA114♠♥Q=+0
+1.5Round 1🇹🇼 CHINESE TAIPEI114♠♦4+2+1
+1.5Round 13🇭🇰 CHINA HONG KONG12♠♦2-1+8
+1.4Round 10🇸🇪 SWEDEN42♥♣K+1+0
+1.4Round 14🇮🇱 ISRAEL93NT♥3+1+1
+1.3Round 1🇹🇼 CHINESE TAIPEI53NT♥8+1+0
+1.3Round 18🇳🇱 NETHERLANDS1Pass+3
+1.3Round 21🇺🇸 USA 111NT♦6-1-3
+1.2Round 11🇫🇷 FRANCE23NT♠8+2+1
+1.2Round 11🇫🇷 FRANCE33♣♣7-1+2
+1.1Round 9🇮🇩 INDONESIA14♥♥3+1+0
+1.1Round 11🇫🇷 FRANCE16♦♦3=-2
+1.1Round 12🇮🇳 INDIA85♦♠3-1+4
+1.0Round 1🇹🇼 CHINESE TAIPEI92♦♣6+2+7
+1.0Round 12🇮🇳 INDIA32♠♦3-2+1
+0.9Round 13🇭🇰 CHINA HONG KONG72♦♥J-1+6
+0.8Round 9🇮🇩 INDONESIA34♥♠4=+0
+0.8Round 9🇮🇩 INDONESIA143NT♥3+2+1
+0.8Round 13🇭🇰 CHINA HONG KONG134♠♦K=-1
+0.5Round 1🇹🇼 CHINESE TAIPEI84♠♥6=-1
+0.5Round 17🇪🇬 EGYPT74♦♠Q=+0
+0.5Round 19🇵🇱 POLAND114♥♦2+1-11
+0.4Round 9🇮🇩 INDONESIA61NT♣3=-1
+0.4Round 18🇳🇱 NETHERLANDS61NTx♣K-1-1
+0.3Round 4🇨🇴 COLOMBIA94♠♣8+3+12
+0.3Round 12🇮🇳 INDIA63♣♠3=+0
+0.3Round 13🇭🇰 CHINA HONG KONG33NT♥J=-1
+0.1Round 10🇸🇪 SWEDEN23♥♦A-1+10
-0.0Round 3🇮🇹 ITALY74♠♣J=+3
+0.0Round 5🇺🇸 USA 284♠♥3-1+2
+0.0Round 15🇨🇱 CHILE64♠♣J=-1
+0.0Round 18🇳🇱 NETHERLANDS86♠♣3+1-11
+0.0Round 18🇳🇱 NETHERLANDS143NT♦4-1-4
-0.1Round 2🇦🇺 AUSTRALIA84♥♦5+2+1
-0.1Round 3🇮🇹 ITALY124♠♣A-1+5
-0.1Round 17🇪🇬 EGYPT14♥♠J=+0
-0.1Round 19🇵🇱 POLAND102♥♣7+1+0
-0.2Round 7🇨🇳 CHINA31NT♦A+1-7
-0.2Round 7🇨🇳 CHINA86♠♠3=-11
-0.3Round 11🇫🇷 FRANCE134♠♥J=+0
-0.4Round 7🇨🇳 CHINA44♠♠3+1+0
-0.4Round 10🇸🇪 SWEDEN84♥♠10=+0
-0.5Round 14🇮🇱 ISRAEL25♣♥2=+0
-0.5Round 14🇮🇱 ISRAEL122♠♥Q-1+10
-0.5Round 18🇳🇱 NETHERLANDS53NT♠8+1+0
-0.6Round 17🇪🇬 EGYPT122♠♦7=-5
-0.7Round 2🇦🇺 AUSTRALIA41NT♣6+2-10
-0.7Round 7🇨🇳 CHINA62♦♥3-1-1
-0.7Round 9🇮🇩 INDONESIA42♠♠3-1+0
-0.7Round 11🇫🇷 FRANCE106♠♣4=+0
-0.7Round 18🇳🇱 NETHERLANDS124♠♣10-2-6
-0.8Round 7🇨🇳 CHINA104♠♠Q-1+6
-0.8Round 10🇸🇪 SWEDEN124♠♦9+1+0
-0.8Round 17🇪🇬 EGYPT45♦♣A=+2
-0.9Round 2🇦🇺 AUSTRALIA33NT♦4+1-1
-0.9Round 4🇨🇴 COLOMBIA113NT♠K=-1
-0.9Round 9🇮🇩 INDONESIA113♠♣Q-3+1
-0.9Round 12🇮🇳 INDIA144♥♠6+2-11
-0.9Round 14🇮🇱 ISRAEL84♦x♥A-2-4
-0.9Round 17🇪🇬 EGYPT63NT♥Q-2-7
-1.0Round 3🇮🇹 ITALY24♥♠K+2-1
-1.0Round 3🇮🇹 ITALY141NT♠2=+0
-1.0Round 10🇸🇪 SWEDEN111NT♥2+2-2
-1.0Round 12🇮🇳 INDIA116♦♥3=-12
-1.0Round 17🇪🇬 EGYPT131NT♠3+1+6
-1.2Round 10🇸🇪 SWEDEN32♠♦A=+0
-1.3Round 1🇹🇼 CHINESE TAIPEI44♠♥2+1+0
-1.3Round 11🇫🇷 FRANCE42♥♠3+1+0
-1.3Round 13🇭🇰 CHINA HONG KONG51NT♠6+1-7
-1.3Round 14🇮🇱 ISRAEL112♦♠3+1+0
-1.4Round 10🇸🇪 SWEDEN141♠x♣10-3-2
-1.4Round 11🇫🇷 FRANCE95♥♠4=+0
-1.4Round 13🇭🇰 CHINA HONG KONG104♥♠10=+0
-1.4Round 18🇳🇱 NETHERLANDS93♥♣A-1-2
-1.4Round 21🇺🇸 USA 174♥♠2+1+0
-1.5Round 13🇭🇰 CHINA HONG KONG43♦♥J=+0
-1.6Round 5🇺🇸 USA 263♦♦3=+0
-1.6Round 6🇨🇦 CANADA84♠♦9=+0
-1.6Round 21🇺🇸 USA 134♠♦J+2-1
-1.7Round 5🇺🇸 USA 271♦♥3-1+0
-1.7Round 9🇮🇩 INDONESIA133NT♦Q-1-6
-1.7Round 19🇵🇱 POLAND22♦♣6-2-5
-1.7Round 21🇺🇸 USA 123NT♠7+4-2
-1.7Round 21🇺🇸 USA 182NT♠5=-5
-1.8Round 7🇨🇳 CHINA142♦♥3+1+0
-1.9Round 14🇮🇱 ISRAEL14♠♠2+1-1
-1.9Round 14🇮🇱 ISRAEL101NT♠3-1+1
-2.0Round 12🇮🇳 INDIA44♠♠3-1-11
-2.0Round 13🇭🇰 CHINA HONG KONG23♠♦K-2+0
-2.0Round 14🇮🇱 ISRAEL72♥♣3=-10
-2.0Round 19🇵🇱 POLAND83♠♣K=-6
-2.1Round 7🇨🇳 CHINA133♥♠3+1-1
-2.1Round 12🇮🇳 INDIA124♠♠3+2+11
-2.1Round 14🇮🇱 ISRAEL141NT♠3+1-6
-2.1Round 15🇨🇱 CHILE122♥♠3=-6
-2.2Round 21🇺🇸 USA 1143NT♥7-2-5
-2.3Round 17🇪🇬 EGYPT36NT♥2=+11
-2.4Round 4🇨🇴 COLOMBIA134♠♦A=-3
-2.6Round 2🇦🇺 AUSTRALIA54♣♦Q-2-2
-2.6Round 2🇦🇺 AUSTRALIA111NT♠A=+0
-2.6Round 11🇫🇷 FRANCE116♦♠A=+2
-2.6Round 19🇵🇱 POLAND44♠♦6+1-1
-2.8Round 10🇸🇪 SWEDEN53♣♠3+1+0
-2.8Round 10🇸🇪 SWEDEN102♦♠6=-5
-2.8Round 13🇭🇰 CHINA HONG KONG122♠♦K-1-4
-2.9Round 1🇹🇼 CHINESE TAIPEI15♥♣2-3-6
-2.9Round 2🇦🇺 AUSTRALIA94♠♦9+1+0
-2.9Round 4🇨🇴 COLOMBIA33♠♥J+2-6
-2.9Round 13🇭🇰 CHINA HONG KONG143NT♥8=+1
-3.0Round 1🇹🇼 CHINESE TAIPEI104♥♠A+1-1
-3.1Round 2🇦🇺 AUSTRALIA132♥♠A+1+0
-3.1Round 12🇮🇳 INDIA104♥♠K-1-12
-3.2Round 12🇮🇳 INDIA74♠♠A-2-3
-3.2Round 13🇭🇰 CHINA HONG KONG115♦♥2-2-5
-3.2Round 21🇺🇸 USA 142♠♦5+3+9
-3.2Round 21🇺🇸 USA 1123NT♣J-1-5
-3.4Round 1🇹🇼 CHINESE TAIPEI74♥♣7+2-1
-3.4Round 4🇨🇴 COLOMBIA143NT♥2=+0
-3.6Round 10🇸🇪 SWEDEN14♥♠J=-8
-3.7Round 19🇵🇱 POLAND33NT♠6=-7
-3.8Round 2🇦🇺 AUSTRALIA143NT♠J-3-7
-3.8Round 9🇮🇩 INDONESIA122♥♠K+2-8
-3.9Round 12🇮🇳 INDIA93NT♠9=-7
-4.1Round 15🇨🇱 CHILE92♥♠J+2-6
-4.1Round 21🇺🇸 USA 194♥♦10+3-17
-4.2Round 1🇹🇼 CHINESE TAIPEI34♠♠6=+1
-4.2Round 5🇺🇸 USA 224♠♦4-3-9
-4.3Round 10🇸🇪 SWEDEN61NT♠K-2-3
-4.3Round 14🇮🇱 ISRAEL53NT♣10-1-6
-4.5Round 17🇪🇬 EGYPT142♠x♦J-2+3
-4.6Round 3🇮🇹 ITALY84♥♣10-2-9
-4.6Round 3🇮🇹 ITALY114♠♥9-1-5
-4.7Round 4🇨🇴 COLOMBIA53NT♣10-1-9
-4.7Round 6🇨🇦 CANADA94♥♦3=-3
-4.7Round 13🇭🇰 CHINA HONG KONG63NT♦10-2-7
-5.0Round 4🇨🇴 COLOMBIA71NT♠3-2-8
-5.1Round 19🇵🇱 POLAND52♥♦J+1-6
-5.2Round 5🇺🇸 USA 2144♥x♠K-2-10
-5.2Round 9🇮🇩 INDONESIA102♥♦K-3-4
-5.5Round 18🇳🇱 NETHERLANDS32♥♣Q-2-7
-5.7Round 6🇨🇦 CANADA125♦♥3=+1
-5.8Round 15🇨🇱 CHILE134♠♠6+1+0
-5.8Round 19🇵🇱 POLAND64♥♠6-2-8
-5.9Round 10🇸🇪 SWEDEN95♣♥5+1-7
-6.0Round 5🇺🇸 USA 2103NT♠3-2-8
-6.0Round 9🇮🇩 INDONESIA96♣♠J=+2
-6.1Round 1🇹🇼 CHINESE TAIPEI145♥♦8=-2
-6.1Round 5🇺🇸 USA 2124♥♠3-1-6
-6.6Round 5🇺🇸 USA 243♠♠3+1-1
-6.8Round 4🇨🇴 COLOMBIA22♥♠3-2-8
-7.4Round 9🇮🇩 INDONESIA53♠♥A-3-10
-8.2Round 13🇭🇰 CHINA HONG KONG85♦x♥A-4-8
-8.9Round 10🇸🇪 SWEDEN72♠♥2-3-5
-9.6Round 11🇫🇷 FRANCE86♠x♣Q=-12
-10.2Round 15🇨🇱 CHILE103NT♠3-1-12
-10.3Round 17🇪🇬 EGYPT103♥♠Q-1-11
-10.4Round 21🇺🇸 USA 153NT♥2=+0
-10.7Round 12🇮🇳 INDIA136NT♠3-1-17
-11.2Round 19🇵🇱 POLAND126♠♥K-3-17
-11.5Round 19🇵🇱 POLAND96♣♠Q-1-12
-11.8Round 15🇨🇱 CHILE76♥♠6=-13
-16.3Round 4🇨🇴 COLOMBIA47♣x♥2=-17