LIU Song · ZHONGSHAN JIEGAO

71rank
+2.7Butler · 42 bds
+0.06per board
±3.5swing
+0.05vs par /bd
+0.01adjusted /bd
Butler per round: 5.8 -3.1 -3.1by round

vs par split: bidding +0.64 · play -0.60

Strength of schedule: opponents averaged -0.06/bd (an easy draw) → opponent-adjusted +0.01/bd

Card play — on target: opening leads 87.5% · declarer play 71.4% · defence 80.8%

Card play by contract type — on target
vs NTvs a suit
Opening leads75.0% (4)100.0% (4)
Declarer play100.0% (1)66.7% (6)
Defence70.0% (10)87.5% (16)

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

vs par by strain: NT +0.08 (13) · a suit +0.03 (29)

vs par by level: part-score -0.05 (20) · game +0.55 (20) · slam -4.00 (2)

By role: declaring -0.09/bd (-1.44 vs par · 16) · defending +0.16/bd (+0.96 vs par · 26)

By vulnerability: vulnerable -0.13/bd (-1.24 vs par · 21) · not vulnerable +0.26/bd (+1.33 vs par · 21)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round of 32W.HeP.Zimmermann – K.MartensClosed14+5.8+0.41+1.93
Round of 16W.HeZ.Xie – Z.LiaoOpen14+3.6+0.26+0.07
Round of 16W.HeZ.Xie – Z.LiaoOpen14-6.7-0.48-1.86

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 of 16CHINA MIXED125♠x♥K-5+13
+6.2Round of 32SWISS TEAM94♣♥A-2+7
+5.4Round of 16CHINA MIXED143♠♥2+3+11
+4.6Round of 16CHINA MIXED244♥♠K=+1
+3.4Round of 16CHINA MIXED272♥x♣2-1+0
+3.2Round of 32SWISS TEAM34NT♥2+2+17
+3.1Round of 16CHINA MIXED183NT♦7+2+2
+2.5Round of 16CHINA MIXED52♠♥A=+0
+2.4Round of 32SWISS TEAM133NT♣2-1+5
+2.1Round of 16CHINA MIXED213NT♠Q-1+4
+1.9Round of 16CHINA MIXED195♣♠2=+0
+1.5Round of 16CHINA MIXED233♥♣K=+0
+0.8Round of 32SWISS TEAM62♠♦4+1+1
+0.6Round of 16CHINA MIXED84♠♥3+1+0
+0.3Round of 16CHINA MIXED44♠♦Q=-3
+0.1Round of 16CHINA MIXED93♥♠Q=+0
+0.1Round of 16CHINA MIXED222NT♥2-1-4
+0.0Round of 32SWISS TEAM24♥♥2-2-11
+0.0Round of 32SWISS TEAM41NT♠2=-5
-0.1Round of 32SWISS TEAM101NT♠9=+1
-0.1Round of 16CHINA MIXED13♦♥A=+0
-0.1Round of 16CHINA MIXED101NT♦2+2-1
-0.1Round of 16CHINA MIXED282♠♠J+1+0
-0.4Round of 32SWISS TEAM14♥♣K+1+0
-0.4Round of 32SWISS TEAM84♠♥Q+1+11
-0.4Round of 32SWISS TEAM143NT♥3=+1
-0.5Round of 16CHINA MIXED171NT♥2-3+0
-0.6Round of 16CHINA MIXED63♣♣4=-1
-1.1Round of 32SWISS TEAM54♠♥8+1-1
-1.2Round of 32SWISS TEAM123♦♥2=+0
-1.3Round of 16CHINA MIXED201♥♥A+1+0
-1.5Round of 32SWISS TEAM74♥♣2=+1
-1.7Round of 32SWISS TEAM116NT♣J=+0
-1.8Round of 16CHINA MIXED114♥♥A+2-1
-2.9Round of 16CHINA MIXED73♥♠2-1+1
-3.0Round of 16CHINA MIXED22♠♣2-1-5
-4.1Round of 16CHINA MIXED34♠x♣2-2-5
-4.6Round of 16CHINA MIXED153NT♦Q-1-13
-4.7Round of 16CHINA MIXED254♠♥A=+0
-5.7Round of 16CHINA MIXED136♥♠2=-8
-6.1Round of 16CHINA MIXED164♥♦5=-10
-6.1Round of 16CHINA MIXED262NT♦2=-6