JIANG Zhengrong · CANADA CHINA UNITED

121rank
+40.4Butler · 100 bds
+0.40per board
±4.6swing
+0.29vs par /bd · #198/567
+0.58adjusted /bd
Butler per round: 11.6 11.5 -9.3 -5.3 11.4 -1.1 1 5.1 35.5 -20by round

vs par split: bidding +0.40 · play -0.11

Strength of schedule: opponents averaged +0.18/bd (a tough draw) → opponent-adjusted +0.58/bd

Card play — on target: opening leads 80.0% #285 of 567 · declarer play 70.4% #428 of 567 · defence 85.4% #183 of 567

Card play by contract type — on target
vs NTvs a suit
Opening leads60.0% (5)90.0% (10)
Declarer play72.7% (11)68.8% (16)
Defence77.8% (9)87.2% (39)

Opening leads by suit led: ♠ 66.7% (3) · ♥ 80.0% (5) · ♦ 100.0% (2) · ♣ 80.0% (5)

vs par by strain: NT -0.94 (34) · a suit +0.92 (66)

vs par by level: part-score +0.48 (42) · game -0.11 (54) · slam +3.75 (4)

By role: declaring +0.10/bd (-1.90 vs par · 52) · defending +0.74/bd (+2.67 vs par · 48)

By vulnerability: vulnerable +0.75/bd (+1.42 vs par · 50) · not vulnerable +0.06/bd (-0.84 vs par · 50)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1M.ShengD.Fan – Y.MaClosed10+11.6+1.16+1.90
Round 2M.ShengJ.Li – J.LiuOpen10+11.5+1.15+2.10
Round 4M.ShengY.Zhang – K.ChengOpen10-9.3-0.93-0.70
Round 5M.ShengX.Wu – L.FengClosed10-5.3-0.53-1.10
Round 8M.ShengJ.Zhou – J.HouClosed10+11.4+1.14+1.10
Round 9M.ShengB.Bramley – K.WoolseyOpen10-1.1-0.11+3.30
Round 10M.ShengL.Chen – H.SoOpen10+1.0+0.10-1.90
Round 12M.ShengL.Blakset – N.BekkoucheOpen10+5.1+0.51+0.80
Round 13M.ShengY.Wu – Y.YeClosed10+35.5+3.55+1.70
Round 15M.ShengW.Starkowski – M.KwiecienClosed10-20.0-2.00-4.30

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 13ASYMCHEM76♣♥K-1+13
+10.6Round 2PD TIMES122♥x♦5=+14
+9.9Round 1WUHAN ENGINEERING43NTx♣6=+12
+9.4Round 12MIX DENMARK223♣♦J+3+13
+9.1Round 13ASYMCHEM104♥x♦5-2+12
+7.8Round 1WUHAN ENGINEERING104♥x♣10-2+9
+7.7Round 1WUHAN ENGINEERING83NT♦4+2+1
+6.8Round 13ASYMCHEM33NT♦3-1+12
+6.8Round 13ASYMCHEM54♥♥2-2+0
+5.9Round 15POLAND Seniors223NT♠2=+0
+5.7Round 2PD TIMES204♠♥5-1+12
+5.7Round 5WUHU BRIDGE TEAM173NT♦A=+6
+5.7Round 8CHINA XHJT165♣♥2-3+9
+4.8Round 5WUHU BRIDGE TEAM114♠♥3-1+5
+4.8Round 9USA 1 Seniors223NT♣9-2+6
+4.2Round 15POLAND Seniors263♥x♣A-2-4
+4.1Round 12MIX DENMARK274♠♦6=+0
+3.9Round 10CHINESE TAIPEI Mixed73NT♦7+1+1
+3.8Round 1WUHAN ENGINEERING62♠♦6=+11
+3.7Round 13ASYMCHEM42♠♦A=+6
+3.6Round 1WUHAN ENGINEERING33♥♦K-1+5
+3.6Round 2PD TIMES143♣♥2-1-2
+3.6Round 8CHINA XHJT124♥♦K+2+11
+3.4Round 8CHINA XHJT201NT♥2=-1
+3.4Round 9USA 1 Seniors233NT♥9+2+14
+3.3Round 2PD TIMES154♥♣6=+6
+3.3Round 9USA 1 Seniors306♠♦Q-2+11
+3.2Round 4YBT43♦♦2+1+11
+3.1Round 15POLAND Seniors214♥♠7-1+6
+2.8Round 13ASYMCHEM13NT♦5=-1
+2.7Round 10CHINESE TAIPEI Mixed24♠♥A=+3
+2.4Round 10CHINESE TAIPEI Mixed64♠♣10-1+6
+2.3Round 8CHINA XHJT133♠♦8-2+2
+1.9Round 4YBT93♥x♠A-1+7
+1.9Round 9USA 1 Seniors243♥♦A-2+5
+1.9Round 10CHINESE TAIPEI Mixed54♥♣K-1-2
+1.7Round 5WUHU BRIDGE TEAM123♣♣5=+0
+1.7Round 8CHINA XHJT185♦♣5=-2
+1.6Round 4YBT101NT♣3+1+1
+1.5Round 10CHINESE TAIPEI Mixed91NT♥A=+5
+1.4Round 4YBT54♥♦A-4+1
+1.3Round 12MIX DENMARK284♥♣7+2-11
+1.2Round 12MIX DENMARK232♥♥9+2+1
+1.1Round 12MIX DENMARK243♥♣3=+7
+1.0Round 12MIX DENMARK292♠♣7=+1
+0.9Round 13ASYMCHEM93NT♥5+2+2
+0.7Round 9USA 1 Seniors255♥♣2+2+10
+0.7Round 12MIX DENMARK262♥♦Q+1+0
+0.6Round 1WUHAN ENGINEERING13♠♣3+1+6
+0.6Round 2PD TIMES131NT♦Q=-1
+0.4Round 8CHINA XHJT175♣♠2-1+4
+0.3Round 13ASYMCHEM23♠♦A-1-10
+0.2Round 10CHINESE TAIPEI Mixed34♣♦10+1-6
-0.0Round 8CHINA XHJT114♠♥A+1+0
+0.0Round 8CHINA XHJT143NT♦7+2+0
-0.0Round 10CHINESE TAIPEI Mixed86NT♣6=-11
+0.0Round 12MIX DENMARK211♥♣J+2+1
-0.1Round 5WUHU BRIDGE TEAM163♣♠Q=-7
-0.2Round 15POLAND Seniors243NT♠4+2+0
-0.3Round 4YBT14♥♠K+1+0
-0.4Round 5WUHU BRIDGE TEAM202♠♣2+1+0
-0.5Round 1WUHAN ENGINEERING71NT♥5=-1
-0.5Round 8CHINA XHJT153NT♠9=-1
-0.5Round 9USA 1 Seniors263NT♦Q+2+12
-0.5Round 15POLAND Seniors253NT♣4+1+0
-0.6Round 4YBT34♥♦3+2-11
-0.8Round 2PD TIMES114♥x♣A-2+3
-0.9Round 4YBT62♦♣6-1+0
-1.1Round 13ASYMCHEM62♦♠A+1-7
-1.2Round 2PD TIMES182♦♣3-1-4
-1.3Round 2PD TIMES173♠♠5+1+6
-1.3Round 9USA 1 Seniors273♥♠7-2-8
-1.6Round 5WUHU BRIDGE TEAM152♥♠A=-5
-2.2Round 4YBT82♠♦K=+0
-2.3Round 10CHINESE TAIPEI Mixed102♠♦4+1-1
-2.5Round 5WUHU BRIDGE TEAM143♣♠K-1+3
-2.5Round 15POLAND Seniors283NT♥J+3-11
-2.8Round 12MIX DENMARK302NT♦J-2-6
-2.8Round 15POLAND Seniors303NT♦4-1-5
-2.9Round 9USA 1 Seniors283♥♣10-2-5
-3.3Round 10CHINESE TAIPEI Mixed11NT♠3-3-6
-3.4Round 9USA 1 Seniors291NT♣K-1-1
-3.4Round 15POLAND Seniors233♦♠K-2-3
-3.6Round 5WUHU BRIDGE TEAM194♠♣A-1-5
-3.8Round 2PD TIMES163NT♠4=-7
-4.3Round 5WUHU BRIDGE TEAM183NTx♠9-1-8
-5.0Round 5WUHU BRIDGE TEAM133NT♣3+1+0
-5.1Round 13ASYMCHEM83NT♥3+2-10
-5.2Round 2PD TIMES193NT♣A-1-6
-5.2Round 8CHINA XHJT193NT♠2-2-11
-5.4Round 1WUHAN ENGINEERING23♥♣A=-7
-6.0Round 4YBT74♠♣K-1-6
-6.0Round 10CHINESE TAIPEI Mixed45♦♠2-2-8
-7.1Round 9USA 1 Seniors214♠x♦K-1-11
-7.4Round 4YBT25♥x♣K=-10
-7.6Round 1WUHAN ENGINEERING53NT♥8-2-11
-8.3Round 1WUHAN ENGINEERING93NT♥10+1-6
-9.9Round 15POLAND Seniors274♠♠A=-11
-10.9Round 12MIX DENMARK257♦♠8=+2
-13.9Round 15POLAND Seniors294♠x♥A=-15