ZHANG Yiyang · CHINA SX CLUB

19rank
+47.8Butler · 60 bds
+0.80per board
±3.6swing
+2.62vs par /bd · #3/73
+1.18adjusted /bd
Butler per round: 18.8 -1.3 3 -3.7 19 12by round

vs par split: bidding +2.08 · play +0.53

Strength of schedule: opponents averaged +0.38/bd (a tough draw) → opponent-adjusted +1.18/bd

Card play — on target: opening leads 71.4% #59 of 73 · declarer play 80.0% #20 of 73 · defence 80.6% #39 of 73

Card play by contract type — on target
vs NTvs a suit
Opening leads50.0% (6)87.5% (8)
Declarer play70.0% (10)100.0% (5)
Defence84.6% (13)77.8% (18)

Opening leads by suit led: ♠ 60.0% (5) · ♥ 100.0% (3) · ♦ 75.0% (4) · ♣ 50.0% (2)

vs par by strain: NT +2.23 (31) · a suit +3.03 (29)

vs par by level: part-score +2.60 (35) · game +2.75 (24) · slam +0.00 (1)

By role: declaring +1.42/bd (+0.69 vs par · 29) · defending +0.22/bd (+4.42 vs par · 31)

By vulnerability: vulnerable +1.11/bd (+3.10 vs par · 30) · not vulnerable +0.48/bd (+2.13 vs par · 30)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1Y.LiuA.Lin – T.AllenOpen10+18.8+1.88+3.40
Round 2Y.LiuR.Miller – B.HarperOpen10-1.3-0.13+1.40
Round 3Y.LiuJ.Schwartz – M.GreenOpen10+3.0+0.30+1.00
Round 4Y.LiuN.Chang – J.OlsenClosed10-3.7-0.37+2.80
Round 5Y.LiuY.Lu – X.LuOpen10+19.0+1.90+1.00
Round 7Y.LiuZ.Wu – W.LiuOpen10+12.0+1.20+6.10

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
+12.2Round 1LIN56♥♦J=+0
+9.0Round 7ZHIHAOLE SCHOOL103NT♠9=-1
+8.0Round 2KRISTENSEN193NT♠2-1+12
+6.8Round 1LIN104♥♦4-3+10
+6.4Round 5CHINA GIRLS SX CLUB173NT♠4=+0
+5.3Round 7ZHIHAOLE SCHOOL91NT♠2-2+7
+5.2Round 3BERMAN303♦♥2+1+6
+4.7Round 7ZHIHAOLE SCHOOL53♦♣5+3+13
+4.4Round 5CHINA GIRLS SX CLUB202NT♥3-2+7
+4.2Round 3BERMAN282NT♣A+1+7
+4.2Round 4BERK13NT♦5-2+9
+3.8Round 1LIN71NT♠3=+5
+3.1Round 7ZHIHAOLE SCHOOL24♥♦4+3+14
+2.8Round 2KRISTENSEN144NT♥4+1+0
+2.7Round 4BERK83NT♥5=+0
+2.5Round 1LIN33♠♦K=+0
+2.5Round 5CHINA GIRLS SX CLUB192♥♠A+1+1
+2.2Round 2KRISTENSEN111NT♣3=+0
+2.2Round 5CHINA GIRLS SX CLUB134♠♥A=+0
+2.0Round 5CHINA GIRLS SX CLUB182♥♦6+3+6
+1.9Round 5CHINA GIRLS SX CLUB113NT♣4+1-11
+1.8Round 1LIN63♠♣6=+11
+1.7Round 5CHINA GIRLS SX CLUB161NT♠2+1+0
+1.5Round 3BERMAN223NT♠Q+2+1
+1.5Round 3BERMAN263NT♦6+3+13
+1.5Round 4BERK73♦♥4-1+5
+1.4Round 2KRISTENSEN133♦♠5=+0
+1.4Round 5CHINA GIRLS SX CLUB123NT♠4=-1
+0.8Round 1LIN13NT♣K+2+1
+0.8Round 2KRISTENSEN202♥♠J=+0
+0.5Round 3BERMAN231NT♠2=-1
+0.4Round 7ZHIHAOLE SCHOOL81NT♣6-1-2
-0.2Round 2KRISTENSEN172♠x♥5-3+14
-0.2Round 4BERK22NT♦A-1-2
-0.5Round 4BERK93NT♥9+1+13
-0.8Round 1LIN42♥♦7-1-1
-0.8Round 3BERMAN214♣♠A=+0
-0.8Round 3BERMAN255♥♦9-1-6
-0.8Round 4BERK41NT♥3+1-1
-0.9Round 5CHINA GIRLS SX CLUB141NT♠3-1+2
-1.0Round 2KRISTENSEN184♥♠3-4+3
-1.0Round 3BERMAN291NT♠7+3-2
-1.0Round 7ZHIHAOLE SCHOOL61NT♥5=+12
-1.3Round 4BERK54♠♣A+2+11
-1.4Round 7ZHIHAOLE SCHOOL42♠♥K-3+8
-1.5Round 7ZHIHAOLE SCHOOL74NT♣4=+13
-1.7Round 1LIN82♣♦3+1+8
-1.8Round 7ZHIHAOLE SCHOOL34♦♣A-1-1
-2.1Round 3BERMAN271NT♣5+1+1
-2.2Round 1LIN22♠♥5+1+0
-2.6Round 5CHINA GIRLS SX CLUB151NT♠2-2+6
-2.8Round 4BERK102NT♦K+1-10
-3.1Round 2KRISTENSEN123NT♦6+1+1
-3.2Round 4BERK32♠♥3+2-2
-3.3Round 4BERK64♥♠5-2+5
-4.4Round 1LIN93♣♠8+1+0
-4.8Round 7ZHIHAOLE SCHOOL14♥♦7+2-2
-5.2Round 3BERMAN245♥x♦10-1-9
-5.6Round 2KRISTENSEN163♣♥K=-6
-6.6Round 2KRISTENSEN153NT♣5-3-10