CAI Yang · ZHEJIANG JINGFAN

237rank
+6.5Butler · 21 bds
+0.31per board
±5.0swing
+1.71vs par /bd
-0.30adjusted /bd
Butler per round: 3.7 7.5 -4.7by round

vs par split: bidding +0.48 · play +1.24

Strength of schedule: opponents averaged -0.61/bd (an easy draw) → opponent-adjusted -0.30/bd

Card play — on target: opening leads 85.7% · declarer play 80.0% · defence 100.0%

Card play by contract type — on target
vs NTvs a suit
Opening leads50.0% (2)100.0% (5)
Declarer play66.7% (3)100.0% (2)
Defence100.0% (4)100.0% (9)

Opening leads by suit led: ♥ 50.0% (2) · ♦ 100.0% (2) · ♣ 100.0% (3)

vs par by strain: NT +1.25 (8) · a suit +2.00 (13)

vs par by level: part-score +0.67 (9) · game +3.62 (8) · slam +0.25 (4)

By role: declaring +0.34/bd (-1.50 vs par · 8) · defending +0.29/bd (+3.69 vs par · 13)

By vulnerability: vulnerable +0.37/bd (+0.40 vs par · 10) · not vulnerable +0.26/bd (+2.91 vs par · 11)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 3J.ChenD.Huang – Z.YangOpen7+3.7+0.53-0.43
Round 4J.ChenP.Hollands – J.HowardOpen7+7.5+1.07+6.43
Round 5J.ChenJ.Zhang – Z.QiClosed7-4.7-0.67-0.86

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
+10.7Round 4SILVERFOX282♥x♣Q-3+9
+6.1Round 3LUDUS215♦x♥A-4+16
+5.5Round 5DARUI INDUSTRY43NT♣5=-1
+5.4Round 3LUDUS153♠♦9-2+7
+4.6Round 4SILVERFOX236NT♦10-2+17
+3.7Round 3LUDUS163NT♣J+4+10
+2.1Round 4SILVERFOX273♣♠5+3+6
+1.5Round 4SILVERFOX243NT♠3+1-1
+1.0Round 5DARUI INDUSTRY74♠♦3=+0
+0.4Round 5DARUI INDUSTRY52♥♣A+1+0
+0.0Round 4SILVERFOX222♥♦A+1+0
+0.0Round 4SILVERFOX253NT♣4+2+12
-0.3Round 3LUDUS202♥x♦A-2-13
-0.6Round 3LUDUS172♠♣3-1-3
-0.6Round 5DARUI INDUSTRY22♥♠10+1+0
-0.7Round 3LUDUS182♥♣A=+0
-1.9Round 5DARUI INDUSTRY33NT♠7-2-6
-2.6Round 5DARUI INDUSTRY13NT♥5+1-1
-6.5Round 5DARUI INDUSTRY67♣♥6=+2
-9.9Round 3LUDUS196NT♦7-1-20
-11.4Round 4SILVERFOX266♦♣A=+2