ZHUANG Zejun · CHINA OPN(A)

214rank
+17.7Butler · 42 bds
+0.42per board
±4.0swing
+2.07vs par /bd · #62/579
+0.53adjusted /bd
Butler per round: 10.5 6.7 -1.8 -11.4 6.3 7.4by round

vs par split: bidding +1.43 · play +0.64

Strength of schedule: opponents averaged +0.10/bd (a tough draw) → opponent-adjusted +0.53/bd

Card play — on target: opening leads 100.0% #1 of 579 · declarer play 88.9% #89 of 579 · defence 96.0% #58 of 579

Card play by contract type — on target
vs NTvs a suit
Opening leads100.0% (1)100.0% (10)
Declarer play100.0% (2)85.7% (7)
Defence85.7% (7)100.0% (18)

Opening leads by suit led: ♠ 100.0% (3) · ♥ 100.0% (4) · ♦ 100.0% (1) · ♣ 100.0% (3)

vs par by strain: NT +2.91 (11) · a suit +1.77 (31)

vs par by level: part-score -0.42 (19) · game +3.21 (19) · slam +8.50 (4)

By role: declaring +0.77/bd (-1.00 vs par · 17) · defending +0.19/bd (+4.16 vs par · 25)

By vulnerability: vulnerable +0.40/bd (+2.52 vs par · 21) · not vulnerable +0.44/bd (+1.62 vs par · 21)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1H.ShiC.Fung – L.CheungOpen7+10.5+1.50+3.29
Round 2H.ShiZ.Yang – N.LiClosed7+6.7+0.96-0.71
Round 4H.ShiP.Tuczynski – T.SielickiOpen7-1.8-0.26+4.71
Round 5H.ShiN.Bocchi – A.MadalaClosed7-11.4-1.63-2.00
Round 7H.ShiR.Zhang – S.ShaoOpen7+6.3+0.90+2.00
Round 8H.ShiX.Shi – J.ShenOpen7+7.4+1.06+5.14

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
+9.8Round 8SHENZHEN NANGANG POWER263NT♥J-1+12
+9.3Round 2LUDUS116♠♣A=+2
+8.3Round 2LUDUS134♥x♥4+1+8
+6.7Round 7CHINA FINANCE BRIDGE ASSOCIATI154♠♥5-1+14
+6.2Round 1HKJ963NT♠Q=+11
+5.8Round 8SHENZHEN NANGANG POWER226♠♣Q-2+13
+4.6Round 4BRIDGE24 B236NT♦10-2+17
+4.3Round 7CHINA FINANCE BRIDGE ASSOCIATI163♣♠4+1+10
+3.4Round 1HKJ912♠♦J-1-2
+2.6Round 8SHENZHEN NANGANG POWER231NT♠6-2+3
+2.4Round 1HKJ942♠♠2=+6
+2.0Round 7CHINA FINANCE BRIDGE ASSOCIATI214♠♣3-1+5
+1.5Round 2LUDUS82♠♥K-1-2
+1.1Round 7CHINA FINANCE BRIDGE ASSOCIATI172♠♥2+3+2
+1.0Round 4BRIDGE24 B255♦♥K+1+13
+1.0Round 5LAVAZZA74♠♠6=+0
+0.9Round 8SHENZHEN NANGANG POWER274♣♥10-1+4
+0.8Round 1HKJ933♠♣9-2+2
+0.7Round 4BRIDGE24 B243NT♠5=-2
+0.4Round 5LAVAZZA53♥♣A=+0
+0.1Round 1HKJ923NT♥5-1+5
+0.0Round 4BRIDGE24 B222♥♦A+1+0
-0.2Round 1HKJ952♠♠A+1+0
-0.2Round 5LAVAZZA32NT♠J-1-5
-0.6Round 5LAVAZZA22♥♠10+1+0
-1.4Round 4BRIDGE24 B264♥♣Q+2+13
-1.5Round 7CHINA FINANCE BRIDGE ASSOCIATI204♥♠J=-13
-1.7Round 8SHENZHEN NANGANG POWER244♥♠A=+1
-2.0Round 8SHENZHEN NANGANG POWER254♠x♦A-3+3
-2.1Round 2LUDUS122♥♠K+1+0
-2.2Round 1HKJ975♣♥6=+1
-2.6Round 2LUDUS94♣♦A+1-6
-2.6Round 5LAVAZZA13NT♥7+1-1
-2.8Round 7CHINA FINANCE BRIDGE ASSOCIATI181NT♥5+1+1
-2.9Round 5LAVAZZA43♠♥A+1-10
-3.2Round 4BRIDGE24 B275♣♥4=+0
-3.4Round 2LUDUS142♥♣K=-6
-3.5Round 4BRIDGE24 B283NT♣A-2-8
-3.5Round 7CHINA FINANCE BRIDGE ASSOCIATI193♣♥10-1-5
-4.3Round 2LUDUS104NT♣7+1-1
-6.5Round 5LAVAZZA67♣♥J=+2
-8.0Round 8SHENZHEN NANGANG POWER284♥♠4=+0