LIU Yinghao · WOLFSON

26rank
+54.3Butler · 84 bds
+0.65per board
±4.7swing
+1.35vs par /bd · #4/196
+0.62adjusted /bd
Butler per round: 17.2 4.7 1.4 13 14.9 3.1by round

vs par split: bidding +1.37 · play -0.02

Strength of schedule: opponents averaged -0.02/bd (an average draw) → opponent-adjusted +0.62/bd

Card play — on target: opening leads 84.2% #59 of 196 · declarer play 79.2% #92 of 196 · defence 87.2% #92 of 196

Bidding activity — not a pass: 42.5% #123 of 196 (111/261)

Card play by contract type — on target
vs NTvs a suit
Opening leads50.0% (6)100.0% (13)
Declarer play66.7% (6)83.3% (18)
Defence84.6% (13)88.5% (26)

Opening leads by suit led: ♠ 66.7% (3) · ♥ 100.0% (5) · ♦ 100.0% (4) · ♣ 71.4% (7)

vs par by strain: NT -0.21 (24) · a suit +1.97 (60)

vs par by level: part-score +1.63 (27) · game +0.88 (43) · slam +2.21 (14)

By role: declaring +1.02/bd (-0.27 vs par · 45) · defending +0.21/bd (+3.21 vs par · 39)

By vulnerability: vulnerable +0.44/bd (+1.31 vs par · 42) · not vulnerable +0.85/bd (+1.38 vs par · 42)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 2Y.ChenB.Krawczyk – F.KurlitClosed14+17.2+1.23+2.29
Round 3Y.ChenN.Hammelev – A.AlruwayehOpen14+4.7+0.34+0.93
Round 4Y.ChenJ.Wooldridge – D.GraingerClosed14+1.4+0.10+0.50
Round 6Y.ChenC.Ju – Z.ShiClosed14+13.0+0.93+0.50
Round 7Y.ChenI.Chalupec – B.ChmurskiOpen14+14.9+1.06+1.71
Round 8Y.ChenJ.Kranyak – V.DemuyClosed14+3.1+0.22+2.14

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
+11.8Round 8SILVER SURFERS186♣♥2=+0
+9.3Round 2EMI273NTx♥7-3+9
+8.6Round 3TEAM PHOENIX74♠♣2-4+17
+8.5Round 2EMI186♣♠7=+0
+8.1Round 4SIMSON266♥x♣T-2+12
+8.0Round 6CHINA OPEN TEAM 1223NT♠8+1+10
+7.6Round 3TEAM PHOENIX126♥♠K+1+1
+7.2Round 4SIMSON284♠♥2=+7
+6.6Round 4SIMSON223NT♥2-1+10
+6.1Round 2EMI256♥♠A=+12
+5.9Round 6CHINA OPEN TEAM 1264♠♥5=+0
+5.9Round 7SV BRIDGE CLUB134♥♣T=+0
+5.7Round 2EMI244♠x♦2+1+6
+5.6Round 3TEAM PHOENIX24♥x♣A-1+2
+5.6Round 7SV BRIDGE CLUB33NT♥8-1+8
+5.3Round 6CHINA OPEN TEAM 1181NT♥3+3+9
+5.2Round 2EMI196♦♥2-1+11
+5.0Round 6CHINA OPEN TEAM 1205♦♣K=+0
+4.6Round 4SIMSON211NT♠2-3-3
+4.5Round 3TEAM PHOENIX82♥♠J=+5
+3.9Round 7SV BRIDGE CLUB113♥♦2=+6
+3.9Round 8SILVER SURFERS253NT♦6-1+0
+3.8Round 7SV BRIDGE CLUB63♣♣3=+0
+3.6Round 7SV BRIDGE CLUB85♦x♥2-1+5
+3.5Round 7SV BRIDGE CLUB43♥x♦A-1+9
+3.2Round 2EMI215♣♦A-1+6
+3.0Round 3TEAM PHOENIX54♥♠K=+0
+2.8Round 6CHINA OPEN TEAM 1252♠♦9-1+5
+2.3Round 6CHINA OPEN TEAM 1154♠x♥A-1+1
+2.2Round 8SILVER SURFERS241NT♠4+2+2
+2.0Round 7SV BRIDGE CLUB54♥♠A=+1
+2.0Round 8SILVER SURFERS283NT♦2-1+5
+1.4Round 4SIMSON152♥♣Q=+5
+1.4Round 4SIMSON173♦♠9-1+2
+1.4Round 8SILVER SURFERS222♠♥3-1+2
+1.2Round 2EMI165♠x♥K-1+6
+1.1Round 6CHINA OPEN TEAM 1233NT♣9=+0
+1.0Round 3TEAM PHOENIX94♠♣A-3+1
+0.8Round 6CHINA OPEN TEAM 1274♦♠T=+0
+0.7Round 4SIMSON236♠♦2+1+1
+0.5Round 7SV BRIDGE CLUB124♠♣J+1+1
+0.4Round 2EMI154♣♦9+1+10
+0.3Round 4SIMSON183♣♠2-2+2
+0.3Round 7SV BRIDGE CLUB144♠♦K+2+11
+0.2Round 3TEAM PHOENIX32♥♦T+2-2
+0.2Round 3TEAM PHOENIX42♣♣7=+1
+0.2Round 4SIMSON193♣♦2=+7
+0.2Round 6CHINA OPEN TEAM 1174♠♦K=-1
-0.0Round 8SILVER SURFERS232♥♥A+1+0
-0.1Round 2EMI233♥♦A-1-1
-0.3Round 3TEAM PHOENIX133NT♦8=+1
-0.5Round 7SV BRIDGE CLUB73NT♦2+1+0
-0.6Round 8SILVER SURFERS163NT♦4=-1
-0.9Round 7SV BRIDGE CLUB103♣♥T-1+0
-0.9Round 8SILVER SURFERS274♠♥Q+3+10
-1.0Round 6CHINA OPEN TEAM 1282♠♥4+1+10
-1.2Round 2EMI174♠♥6-1-4
-1.2Round 3TEAM PHOENIX113♠♣T-1-4
-1.5Round 8SILVER SURFERS201NT♠J+1+0
-1.7Round 3TEAM PHOENIX143NT♥Q=-2
-1.8Round 4SIMSON244♥♦J+2-1
-2.0Round 2EMI223NT♣2=-7
-2.1Round 8SILVER SURFERS264♥♣7=+0
-2.2Round 7SV BRIDGE CLUB94♠♦Q+1-1
-2.3Round 3TEAM PHOENIX63NT♠K+1+0
-2.3Round 8SILVER SURFERS196♦♣A=+1
-2.4Round 7SV BRIDGE CLUB13NT♠A-3-2
-2.6Round 8SILVER SURFERS217♥♣5=+0
-2.7Round 6CHINA OPEN TEAM 1192NT♣7+1+0
-3.4Round 4SIMSON276♣♠2+1-1
-4.0Round 8SILVER SURFERS176♠♥6=+11
-4.1Round 2EMI263NT♠J=-10
-4.1Round 6CHINA OPEN TEAM 1163NT♠J-1-6
-4.2Round 8SILVER SURFERS156♥♠4=+0
-5.3Round 6CHINA OPEN TEAM 1213♠♥A-1-10
-5.3Round 6CHINA OPEN TEAM 1242NT♥2-2-11
-5.6Round 4SIMSON163NT♥2-2-7
-6.7Round 3TEAM PHOENIX15♦♣6-3-7
-7.4Round 2EMI285♣♦J-1-6
-7.6Round 2EMI202♠♥T=+0
-8.2Round 7SV BRIDGE CLUB24♥♣K+3-14
-9.1Round 4SIMSON256♠♦2-1-17
-9.2Round 4SIMSON203NT♠3-3-10
-13.8Round 3TEAM PHOENIX107♠♣K=+0