🇨🇳 TANG Zhi · CHINA

82rank
-44.1Butler · 238 bds
-0.19per board
±4.2swing
-0.16vs par /bd · #79/116
-0.01adjusted /bd
Butler per round: -10.2 -14.9 -5.9 6 10.3 4.6 -12.6 2.9 9.3 12 -9.9 7.8 0.6 7.3 -10.6 -29.4 -11.4by round

vs par split: bidding -0.10 · play -0.08

Strength of schedule: opponents averaged +0.18/bd (a tough draw) → opponent-adjusted -0.01/bd

Card play — on target: opening leads 80.8% #41 of 116 · declarer play 71.7% #66 of 116 · defence 85.6% #57 of 116

Card play by contract type — on target
vs NTvs a suit
Opening leads70.8% (24)85.7% (49)
Declarer play50.0% (14)81.2% (32)
Defence83.8% (37)86.3% (95)

Opening leads by suit led: ♠ 81.8% (22) · ♥ 70.6% (17) · ♦ 95.0% (20) · ♣ 71.4% (14)

vs par by strain: NT +0.13 (71) · a suit -0.31 (166)

vs par by level: part-score +0.53 (89) · game -0.76 (128) · slam +0.35 (20)

By role: declaring +0.12/bd (-2.00 vs par · 105) · defending -0.43/bd (+1.29 vs par · 133)

By vulnerability: vulnerable -0.04/bd (-0.03 vs par · 119) · not vulnerable -0.33/bd (-0.30 vs par · 119)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1Y.TaoM.Tharwat – A.ElselehdarOpen14-10.2-0.73-3.21
Round 2Y.TaoM.Henbest – A.EdgttonOpen14-14.9-1.06-0.36
Round 3Y.TaoC.Deheeger – A.Rouanet-LabeOpen14-5.9-0.42+1.07
Round 5Y.TaoR.Garcia Da Rosa – M.CrusizioOpen14+6.0+0.43+0.14
Round 6Y.TaoM.Myllaeri – V.FagerlundClosed14+10.3+0.74-3.00
Round 7Y.TaoL.Tijssen – V.KiljanOpen14+4.6+0.33+0.57
Round 8Y.TaoM.Bojarski – M.ChodackiOpen14-12.6-0.90-0.07
Round 9Y.TaoC.Wai – G.TangOpen14+2.9+0.21+0.86
Round 10Y.TaoY.Wiseman – B.NortonOpen14+9.3+0.66-2.71
Round 12Y.TaoS.Hult – S.EkenbergOpen14+12.0+0.86+1.57
Round 14S.LiuV.Otto – F.NordmannOpen14-9.9-0.71+1.21
Round 16Y.TaoV.Lamoureux – X.FengOpen14+7.8+0.56+0.50
Round 17Y.TaoZ.Brescoll – A.KaplanOpen14+0.6+0.04+2.14
Round 18Y.TaoG.Donati – G.PercarioClosed14+7.3+0.52+2.50
Round 19Y.TaoB.Fischer – M.VagiOpen14-10.6-0.76-2.43
Round 20Y.TaoC.Bakke – H.EideOpen14-29.4-2.10-0.14
Round 21Y.TaoN.Katagiri – K.TsuruokaOpen14-11.4-0.81-1.43

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
+13.0Round 7🇳🇱 NETHERLANDS106♠x♥K=+15
+12.1Round 21🇯🇵 JAPAN46♠♦Q-1+12
+11.1Round 1🇪🇬 EGYPT47NT♠K=+0
+10.4Round 19🇭🇺 HUNGARY62♠x♥5=+11
+9.2Round 18🇮🇹 ITALY186♦♠2-1+17
+9.1Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND217NT♠8=+0
+9.0Round 14🇩🇪 GERMANY163NT♥5+1+13
+8.8Round 12🇸🇪 SWEDEN282♦x♦A-4+12
+7.9Round 8🇵🇱 POLAND175♣x♥A-1+9
+7.9Round 16🇨🇦 CANADA246♦♠A-1+10
+7.5Round 9🇭🇰 CHINA HONG KONG35♦x♦2-2+10
+7.2Round 3🇫🇷 FRANCE74♦♥4=+2
+6.7Round 6🇫🇮 FINLAND265♦x♦3-2+0
+6.6Round 1🇪🇬 EGYPT14♥♦4-1+10
+6.6Round 16🇨🇦 CANADA154♥♥10=+0
+6.3Round 12🇸🇪 SWEDEN163♥♠A-1+5
+6.0Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND263♦♦J-3-7
+5.7Round 17🇺🇸 USA193♣♠A-1+10
+5.5Round 3🇫🇷 FRANCE123NT♠5+1+8
+5.4Round 17🇺🇸 USA173NTx♣9-1+8
+5.3Round 18🇮🇹 ITALY204♠♦7-1+12
+5.1Round 12🇸🇪 SWEDEN184♠♦Q-1+6
+5.1Round 18🇮🇹 ITALY174♥♣9-1+4
+4.9Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND184♠♥2+2-12
+4.8Round 3🇫🇷 FRANCE34♥♥5+1+1
+4.7Round 8🇵🇱 POLAND256♣♠A-2+0
+4.7Round 18🇮🇹 ITALY245♠x♥Q-3+2
+4.6Round 18🇮🇹 ITALY194♥x♦K=+5
+4.3Round 6🇫🇮 FINLAND213NT♦9+1+0
+4.1Round 5🇦🇷 ARGENTINA12♥♠Q=+5
+3.9Round 7🇳🇱 NETHERLANDS134♠♠Q=+0
+3.9Round 14🇩🇪 GERMANY264♠♠7=+0
+3.8Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND243NT♠9+2+0
+3.7Round 7🇳🇱 NETHERLANDS32♣♠6-1+5
+3.3Round 12🇸🇪 SWEDEN244♥♦4-2+5
+3.2Round 5🇦🇷 ARGENTINA62♠♣Q=+0
+3.1Round 16🇨🇦 CANADA223NT♠3-2+11
+3.1Round 19🇭🇺 HUNGARY106♠♦K+1-13
+3.0Round 6🇫🇮 FINLAND232♠♣K=+0
+3.0Round 8🇵🇱 POLAND214♠♦A+1-8
+3.0Round 8🇵🇱 POLAND273♠♣K-1+5
+3.0Round 14🇩🇪 GERMANY175♦♠10-2+11
+2.9Round 3🇫🇷 FRANCE52♥♠J-1+5
+2.9Round 16🇨🇦 CANADA273NT♣7+2+2
+2.9Round 17🇺🇸 USA1112♠♥9+2+7
+2.8Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND273♠♥Q-2+5
+2.8Round 16🇨🇦 CANADA284♠♦10=-1
+2.8Round 18🇮🇹 ITALY213NT♥5+3+1
+2.7Round 6🇫🇮 FINLAND252♠♥4+1+0
+2.6Round 2🇦🇺 AUSTRALIA243NT♥5-1+5
+2.5Round 2🇦🇺 AUSTRALIA236♥♣5=-13
+2.5Round 9🇭🇰 CHINA HONG KONG93♠♣A-1+5
+2.4Round 6🇫🇮 FINLAND202♥♠J-3-8
+2.4Round 19🇭🇺 HUNGARY93NT♣3=+0
+2.4Round 20🇳🇴 NORWAY183NT♠5-1+5
+2.4Round 20🇳🇴 NORWAY245♦♠K=-11
+2.3Round 21🇯🇵 JAPAN32♠♥2+2+6
+2.2Round 9🇭🇰 CHINA HONG KONG53♦♥3+1+1
+2.2Round 9🇭🇰 CHINA HONG KONG145♣♠3-1+2
+2.1Round 5🇦🇷 ARGENTINA73NT♦Q+1+0
+2.0Round 1🇪🇬 EGYPT113♥♠4-1+5
+2.0Round 7🇳🇱 NETHERLANDS2Adj.♥8+4
+1.9Round 7🇳🇱 NETHERLANDS74♦♣A-3+4
+1.9Round 16🇨🇦 CANADA232NT♣K-1+5
+1.8Round 6🇫🇮 FINLAND244♠♥K-3+0
+1.7Round 17🇺🇸 USA143NT♦3+3+1
+1.7Round 21🇯🇵 JAPAN91NT♥2-2+0
+1.4Round 7🇳🇱 NETHERLANDS13NT♠6=-1
+1.4Round 7🇳🇱 NETHERLANDS53NT♣Q+1+0
+1.4Round 19🇭🇺 HUNGARY141NT♠8=+5
+1.3Round 2🇦🇺 AUSTRALIA194♠♦9=+0
+1.3Round 19🇭🇺 HUNGARY81NT♦5=+0
+1.2Round 7🇳🇱 NETHERLANDS85♣♥A=+0
+1.1Round 5🇦🇷 ARGENTINA33NT♠3+2+0
+1.1Round 5🇦🇷 ARGENTINA91NT♣8-1+0
+1.1Round 5🇦🇷 ARGENTINA145♣x♠K-2+0
+1.1Round 6🇫🇮 FINLAND153♥♣10+1+6
+1.0Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND224♠♦A+1+0
+1.0Round 14🇩🇪 GERMANY191NT♠6-1-1
+0.9Round 1🇪🇬 EGYPT146♦♣3-2-5
+0.9Round 20🇳🇴 NORWAY283NT♦J+2+0
+0.8Round 5🇦🇷 ARGENTINA56♥♦6-3+8
+0.8Round 9🇭🇰 CHINA HONG KONG123NT♥7+1+1
+0.7Round 6🇫🇮 FINLAND223NT♥3+1-1
+0.7Round 12🇸🇪 SWEDEN203♣♥J+2+10
+0.7Round 14🇩🇪 GERMANY271NT♠6+2+1
+0.7Round 17🇺🇸 USA114♠♣3+1+0
+0.6Round 7🇳🇱 NETHERLANDS124♠♦4+1+0
+0.6Round 16🇨🇦 CANADA182♠♦Q+1+0
+0.6Round 17🇺🇸 USA1124♥♦K=+0
+0.5Round 2🇦🇺 AUSTRALIA264♠x♥3-1+0
+0.5Round 5🇦🇷 ARGENTINA21NT♠10=+1
+0.5Round 5🇦🇷 ARGENTINA132♥♦4-3-7
+0.5Round 12🇸🇪 SWEDEN263NT♣9=+1
+0.5Round 19🇭🇺 HUNGARY54♠x♥K-1-7
+0.4Round 2🇦🇺 AUSTRALIA284♥♠5+2+11
+0.4Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND152♠♦6=+1
+0.4Round 12🇸🇪 SWEDEN234♣♠4=-9
+0.3Round 2🇦🇺 AUSTRALIA213♦♠Q-2+0
+0.3Round 3🇫🇷 FRANCE41NT♠6-2+2
+0.3Round 6🇫🇮 FINLAND165♣♠6=-11
+0.3Round 6🇫🇮 FINLAND173NT♠3=-11
+0.3Round 7🇳🇱 NETHERLANDS64♠♣Q+1+0
+0.3Round 8🇵🇱 POLAND154♥♠2=-1
+0.3Round 21🇯🇵 JAPAN103NT♠10-1+6
+0.2Round 1🇪🇬 EGYPT102♠♥J-1-1
+0.2Round 9🇭🇰 CHINA HONG KONG62♥♠7-2-11
+0.2Round 9🇭🇰 CHINA HONG KONG84♥♦K+1+1
+0.2Round 16🇨🇦 CANADA204♥♥3=+0
+0.1Round 20🇳🇴 NORWAY171NT♣6=+1
+0.1Round 21🇯🇵 JAPAN84♠♥J-2-1
+0.0Round 5🇦🇷 ARGENTINA121NT♠Q=-2
+0.0Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND202♠♣Q=-6
-0.0Round 16🇨🇦 CANADA161NT♣3=+8
+0.0Round 17🇺🇸 USA1143♣♥K-1+2
-0.0Round 18🇮🇹 ITALY252♥♣3+1+4
+0.0Round 21🇯🇵 JAPAN24♥x♠J-1+0
-0.1Round 9🇭🇰 CHINA HONG KONG113NT♠K-2-6
-0.1Round 19🇭🇺 HUNGARY23♣♠Q+1-11
-0.2Round 1🇪🇬 EGYPT33NT♣Q=-1
-0.3Round 21🇯🇵 JAPAN115♣♠K-1-2
-0.4Round 2🇦🇺 AUSTRALIA173♠x♦3-2+12
-0.4Round 2🇦🇺 AUSTRALIA184♠♣2=+0
-0.4Round 17🇺🇸 USA163NT♠5=+1
-0.4Round 18🇮🇹 ITALY264♠♣J-1-6
-0.4Round 21🇯🇵 JAPAN13NT♠J=+1
-0.4Round 21🇯🇵 JAPAN143NT♠5+1-1
-0.5Round 8🇵🇱 POLAND162♠♦9=+0
-0.5Round 9🇭🇰 CHINA HONG KONG44♠♦Q=+1
-0.5Round 17🇺🇸 USA1134♥♣4=+3
-0.5Round 21🇯🇵 JAPAN76♣♥3+1-7
-0.6Round 12🇸🇪 SWEDEN174♠x♣2-2+0
-0.6Round 14🇩🇪 GERMANY251NT♠A=-1
-0.7Round 14🇩🇪 GERMANY213♠♣K=+0
-0.8Round 12🇸🇪 SWEDEN212♥♣9=+0
-0.8Round 14🇩🇪 GERMANY181NT♠4=-1
-0.8Round 16🇨🇦 CANADA174♥♣6=+0
-0.8Round 20🇳🇴 NORWAY204♠♥A-1-6
-0.9Round 2🇦🇺 AUSTRALIA273NT♦4+2+0
-0.9Round 9🇭🇰 CHINA HONG KONG74♠♦K=+0
-0.9Round 14🇩🇪 GERMANY222♠♣3=+0
-0.9Round 16🇨🇦 CANADA211NT♥10-1-1
-1.0Round 3🇫🇷 FRANCE132♥♦2+1+0
-1.0Round 8🇵🇱 POLAND182♥♦Q+1+0
-1.0Round 8🇵🇱 POLAND204♠♠A+1+0
-1.0Round 19🇭🇺 HUNGARY114♠♣Q-2+0
-1.0Round 20🇳🇴 NORWAY163NT♠2=+1
-1.1Round 5🇦🇷 ARGENTINA112♥♠3+1-1
-1.1Round 9🇭🇰 CHINA HONG KONG135♠♦K-1+9
-1.1Round 16🇨🇦 CANADA193♥♦3=-10
-1.2Round 7🇳🇱 NETHERLANDS111NT♣Q=+2
-1.2Round 12🇸🇪 SWEDEN223♠♣8-1-6
-1.2Round 12🇸🇪 SWEDEN274♥♦J+2-1
-1.2Round 18🇮🇹 ITALY153♠♣Q=+0
-1.3Round 1🇪🇬 EGYPT135♣♥3-2-2
-1.3Round 2🇦🇺 AUSTRALIA154♠♥Q+1+0
-1.3Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND194♠♣A+1+0
-1.3Round 19🇭🇺 HUNGARY41NT♦Q-2+9
-1.4Round 9🇭🇰 CHINA HONG KONG105♣♠K=+13
-1.4Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND254♠♣6-1-5
-1.5Round 6🇫🇮 FINLAND273NT♣K=-3
-1.5Round 21🇯🇵 JAPAN61NT♥5+1+0
-1.6Round 17🇺🇸 USA123NT♦4+2+0
-1.6Round 18🇮🇹 ITALY284♦♠9=+7
-1.7Round 3🇫🇷 FRANCE61♥♦9+1+0
-1.7Round 5🇦🇷 ARGENTINA104♥♥A+1-1
-1.7Round 6🇫🇮 FINLAND196NT♣10+1-1
-1.7Round 16🇨🇦 CANADA263NT♥K+1+0
-1.8Round 3🇫🇷 FRANCE22NT♦Q=+0
-1.9Round 19🇭🇺 HUNGARY15♦♣A=-3
-2.0Round 3🇫🇷 FRANCE101NT♠8-1+0
-2.0Round 6🇫🇮 FINLAND284♥♦2=+0
-2.0Round 8🇵🇱 POLAND192♣♦2+1+0
-2.0Round 8🇵🇱 POLAND246♠♥5+1-11
-2.0Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND172♠♦A-2+0
-2.0Round 12🇸🇪 SWEDEN153NT♥3+3-11
-2.0Round 17🇺🇸 USA133♠x♠5-2+7
-2.0Round 18🇮🇹 ITALY234♠♦Q=+0
-2.0Round 20🇳🇴 NORWAY193NT♠4+1-1
-2.1Round 1🇪🇬 EGYPT54♠♣A-2-6
-2.1Round 5🇦🇷 ARGENTINA83♠♠8=-1
-2.3Round 3🇫🇷 FRANCE14♥♠K+2+10
-2.4Round 3🇫🇷 FRANCE94♦♠10-1+2
-2.7Round 2🇦🇺 AUSTRALIA202♦x♥8=-3
-2.7Round 14🇩🇪 GERMANY154♥♠3+2+13
-2.7Round 20🇳🇴 NORWAY214♥♣4+1+11
-2.9Round 17🇺🇸 USA152♠♦Q+2-1
-3.0Round 2🇦🇺 AUSTRALIA222♠♥8+1+0
-3.1Round 14🇩🇪 GERMANY244♠♦6+1+0
-3.1Round 18🇮🇹 ITALY273♣♠10+1-1
-3.1Round 20🇳🇴 NORWAY275♦x♦7-3-2
-3.3Round 12🇸🇪 SWEDEN256NT♥9+1+11
-3.4Round 20🇳🇴 NORWAY152NT♥4-1+5
-3.4Round 20🇳🇴 NORWAY253NT♥5-2-5
-3.5Round 3🇫🇷 FRANCE83NT♦4=+0
-3.5Round 19🇭🇺 HUNGARY123♥♣K-1-5
-3.6Round 1🇪🇬 EGYPT24♥♠A=-8
-3.6Round 5🇦🇷 ARGENTINA42♥♥Q-1+0
-3.6Round 8🇵🇱 POLAND264♥♦9=+1
-3.6Round 19🇭🇺 HUNGARY133♦♣K+1+1
-3.7Round 9🇭🇰 CHINA HONG KONG24♥♦K=-8
-3.7Round 18🇮🇹 ITALY161NT♥4=+0
-3.7Round 20🇳🇴 NORWAY223NT♦3=+1
-4.0Round 12🇸🇪 SWEDEN194♥♦4=-1
-4.0Round 17🇺🇸 USA181NT♥8+1-1
-4.1Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND284♥♠2+1-1
-4.1Round 19🇭🇺 HUNGARY34♥♦K-3-7
-4.3Round 1🇪🇬 EGYPT94♠♥6+1+0
-4.3Round 1🇪🇬 EGYPT123NT♠6=-10
-4.3Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND161NT♣6+2-7
-4.3Round 14🇩🇪 GERMANY282♥x♥K-1-6
-4.5Round 2🇦🇺 AUSTRALIA164♥♥7=-3
-4.5Round 8🇵🇱 POLAND226♠♠2+1+11
-4.8Round 7🇳🇱 NETHERLANDS145♦x♥8=-3
-4.9Round 1🇪🇬 EGYPT75♠♦2-1-7
-5.0Round 1🇪🇬 EGYPT64♠♦A-2-12
-5.0Round 3🇫🇷 FRANCE113♥♦3=-7
-5.0Round 9🇭🇰 CHINA HONG KONG12♠♦9=-6
-5.0Round 17🇺🇸 USA1103♠♠4=-7
-5.3Round 1🇪🇬 EGYPT84♠♥A-1-8
-5.6Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND234♠♥A-1-6
-6.2Round 14🇩🇪 GERMANY203NT♠6-1-12
-6.2Round 21🇯🇵 JAPAN134♠♠3-1-12
-6.4Round 20🇳🇴 NORWAY232♠♣5=-1
-6.4Round 21🇯🇵 JAPAN54♥x♣A=-10
-6.9Round 3🇫🇷 FRANCE143♣♦A-2-8
-7.3Round 8🇵🇱 POLAND287♣♥Q=+2
-7.8Round 6🇫🇮 FINLAND185♦♦6+1-13
-7.8Round 7🇳🇱 NETHERLANDS93NTx♥K=-6
-8.2Round 14🇩🇪 GERMANY233NT♥7+1+0
-8.7Round 20🇳🇴 NORWAY266♠♥5=+0
-9.3Round 2🇦🇺 AUSTRALIA253NT♥6+3-14
-9.6Round 8🇵🇱 POLAND233NT♠10-3-9
-11.0Round 7🇳🇱 NETHERLANDS44♥x♦5=-12
-12.2Round 21🇯🇵 JAPAN126♣♥10=-12
-12.4Round 18🇮🇹 ITALY225♣x♥8-5-10
-13.7Round 16🇨🇦 CANADA256♠♦4-1-17
-14.2Round 19🇭🇺 HUNGARY74♥x♠2-4-14