CHEN Jingdong · CHANGYU

518rank
-31.0Butler · 42 bds
-0.74per board
±4.4swing
+1.12vs par /bd · #170/579
-0.71adjusted /bd
Butler per round: 9.4 5.9 -4.4 -8 -20.4 -13.5by round

vs par split: bidding +0.14 · play +0.98

Strength of schedule: opponents averaged +0.03/bd (an average draw) → opponent-adjusted -0.71/bd

Card play — on target: opening leads 84.6% #166 of 579 · declarer play 100.0% #1 of 579 · defence 82.6% #407 of 579

Card play by contract type — on target
vs NTvs a suit
Opening leads·84.6% (13)
Declarer play100.0% (2)100.0% (5)
Defence40.0% (5)94.4% (18)

Opening leads by suit led: ♠ 100.0% (4) · ♥ 66.7% (3) · ♦ 75.0% (4) · ♣ 100.0% (2)

vs par by strain: NT -1.00 (9) · a suit +1.70 (33)

vs par by level: part-score -2.22 (18) · game +2.15 (20) · slam +11.00 (4)

By role: declaring -1.17/bd (-2.37 vs par · 19) · defending -0.38/bd (+4.00 vs par · 23)

By vulnerability: vulnerable -0.74/bd (+1.65 vs par · 20) · not vulnerable -0.73/bd (+0.64 vs par · 22)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1Y.WangR.Cooper – G.BilalClosed7+9.4+1.34+3.14
Round 2Y.WangJ.Pelletier – D.GerinOpen7+5.9+0.84-0.86
Round 4Y.WangD.Fischer – B.SaurerClosed7-4.4-0.63+4.57
Round 5Y.WangC.Fernand – R.KarunatilakeClosed7-8.0-1.14-1.57
Round 6Y.WangB.Moss – C.MartelOpen7-20.4-2.91+0.00
Round 8Y.WangB.Jin – H.LuOpen7-13.5-1.93+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
+9.2Round 1BILAL75♣♥6-1+12
+8.6Round 2GUADELOUPE116♦♥K+1+1
+5.9Round 5BLADES66♣♠10+1+13
+5.8Round 8ZHEJIANG JUXIN226♠♥7-2+13
+4.2Round 6FLEISHER145♥♠A=+4
+3.5Round 8ZHEJIANG JUXIN284♥♣K-2+11
+3.3Round 1BILAL24♠♦6-3+7
+3.1Round 2GUADELOUPE95♣♦A=+0
+2.4Round 1BILAL42♠♥K=+6
+2.0Round 2GUADELOUPE134♥♦5+2+1
+2.0Round 4KASIMIRS DREAMTEAM236♣♥8-1+17
+1.9Round 2GUADELOUPE142♣♣10=-1
+1.3Round 5BLADES53♥♣A+1+1
+0.9Round 8ZHEJIANG JUXIN273♣♠K-1+4
+0.7Round 1BILAL53♠♠3+1+1
+0.7Round 4KASIMIRS DREAMTEAM245♦♠4=-2
+0.0Round 4KASIMIRS DREAMTEAM253NT♣4+2+12
-0.5Round 1BILAL12♠♦J=-5
-0.6Round 5BLADES22♥♠9+1+0
-0.8Round 4KASIMIRS DREAMTEAM283NT♣2-1-6
-0.9Round 6FLEISHER133♠♥K=+0
-1.0Round 4KASIMIRS DREAMTEAM222♥♦A=-1
-1.1Round 6FLEISHER95♦♣A+1+13
-1.2Round 6FLEISHER103♠♦A=+0
-1.4Round 4KASIMIRS DREAMTEAM264♥♣Q+2+13
-1.6Round 1BILAL32♣♥3=-1
-1.8Round 5BLADES13NT♥7=+0
-1.9Round 5BLADES33NT♠10-2-6
-2.1Round 2GUADELOUPE123♥♠A=+0
-2.2Round 5BLADES42♠♣5+3-9
-2.6Round 2GUADELOUPE82♠♦9=-5
-2.6Round 8ZHEJIANG JUXIN245♥♠Q=+0
-3.8Round 8ZHEJIANG JUXIN263NT♠3+2-2
-3.9Round 4KASIMIRS DREAMTEAM275♣♦A+1-1
-4.1Round 1BILAL63NT♦Q-1+2
-4.3Round 6FLEISHER112♠♥A=-6
-5.0Round 2GUADELOUPE103NT♥2+3-2
-5.0Round 8ZHEJIANG JUXIN232NT♣3-1-5
-7.6Round 6FLEISHER123NT♥J+3-2
-8.7Round 5BLADES73♠♦5+1-10
-9.5Round 6FLEISHER84♦x♣2-4-9
-12.3Round 8ZHEJIANG JUXIN255♠x♦K-5-11