ZHANG Yalan · YBT

139rank
+44.5Butler · 120 bds
+0.37per board
±4.2swing
+0.79vs par /bd · #56/567
+0.46adjusted /bd
Butler per round: 8.8 4.3 -16.1 9.3 3.2 -0.6 13.4 4.7 10.6 -4.6 9.8 1.7by round

vs par split: bidding +0.31 · play +0.51

Strength of schedule: opponents averaged +0.09/bd (a tough draw) → opponent-adjusted +0.46/bd

Card play — on target: opening leads 79.3% #307 of 567 · declarer play 84.0% #116 of 567 · defence 85.0% #207 of 567

Card play by contract type — on target
vs NTvs a suit
Opening leads80.0% (10)78.9% (19)
Declarer play25.0% (4)95.2% (21)
Defence90.9% (22)81.6% (38)

Opening leads by suit led: ♠ 33.3% (6) · ♥ 90.9% (11) · ♦ 83.3% (6) · ♣ 100.0% (6)

vs par by strain: NT +0.24 (37) · a suit +1.08 (82)

vs par by level: part-score +0.02 (53) · game +1.25 (63) · slam +6.00 (3)

By role: declaring -0.08/bd (-1.45 vs par · 60) · defending +0.82/bd (+3.03 vs par · 60)

By vulnerability: vulnerable +0.28/bd (+1.16 vs par · 61) · not vulnerable +0.47/bd (+0.41 vs par · 59)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1K.ChengK.Wang – J.KangClosed10+8.8+0.88+1.70
Round 2K.ChengB.Bramley – K.WoolseyOpen10+4.3+0.43+2.10
Round 3K.ChengJ.Yin – Y.SunOpen10-16.1-1.61-2.70
Round 4K.ChengZ.Jiang – M.ShengOpen10+9.3+0.93+0.70
Round 5K.ChengH.Zhang – L.HeOpen10+3.2+0.32+1.20
Round 6K.ChengP.Buchen – I.ThomsonClosed10-0.6-0.06-1.40
Round 7K.ChengS.Fraser – D.FraserOpen10+13.4+1.34-0.50
Round 8K.ChengL.Ligambi – G.AstoreOpen10+4.7+0.47+0.40
Round 9K.ChengJ.Wang – J.LiClosed10+10.6+1.06+4.00
Round 10K.ChengJ.Ma – C.DongOpen10-4.6-0.46+1.40
Round 11C.YehA.Nurhalim – M.HartonoOpen10+9.8+0.98+0.30
Round 15C.YehC.Madsen – O.PavlushkoOpen10+1.7+0.17+2.30

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
+11.7Round 15AURUSSIA295♥x♠9-2+14
+11.4Round 11INDONESIA Seniors193NT♥4-3+14
+10.5Round 6AUSTRALIA Seniors253NT♥2=+10
+10.0Round 7WE THE NORTH44♥♠K-2+12
+8.0Round 1CHINA HUOCHETOU44♥♦9=+10
+8.0Round 9DONGFENG FENGSHEN294♠♦9=+10
+7.4Round 4CANADA CHINA UNITED25♥x♣K=+10
+6.9Round 15AURUSSIA223NT♥2-1+12
+6.1Round 5SANMING EDUCATION113NT♥A=+6
+6.0Round 4CANADA CHINA UNITED74♠♣K-1+6
+6.0Round 11INDONESIA Seniors122♦♦J+1+7
+5.9Round 1CHINA HUOCHETOU33NT♦9-3+7
+5.9Round 5SANMING EDUCATION194♠♦4-3+7
+5.7Round 2USA 1 Seniors204♠♥A-1+12
+5.7Round 8ITALY Seniors126♣♦7=-2
+5.2Round 11INDONESIA Seniors134♥♠6=+10
+5.2Round 15AURUSSIA273♠♥3=+6
+4.6Round 7WE THE NORTH104♥♦4-2+2
+4.4Round 9DONGFENG FENGSHEN234♠♥6=+14
+4.0Round 2USA 1 Seniors174♠♥A-1+10
+4.0Round 10CRE8IVE53♠♦5-2+7
+3.7Round 8ITALY Seniors193♦♥Q-1+10
+3.6Round 6AUSTRALIA Seniors276♠♣A-2+9
+3.6Round 7WE THE NORTH22♠♣K+1+6
+3.6Round 8ITALY Seniors203NT♥2-2+7
+3.3Round 2USA 1 Seniors154♥♦10=+6
+3.3Round 9DONGFENG FENGSHEN304♠♦3-2+11
+3.2Round 11INDONESIA Seniors155♦x♥A-3-4
+2.8Round 2USA 1 Seniors182♥♥3=+1
+2.7Round 3REIGNWOOD214♥♠K=-1
+2.7Round 10CRE8IVE12NT♦10=+5
+2.5Round 7WE THE NORTH64♥♦6-3+3
+2.5Round 15AURUSSIA283NT♥J+3+11
+2.3Round 10CRE8IVE103♠♦4=+1
+2.2Round 4CANADA CHINA UNITED82♠♦K=+0
+2.1Round 3REIGNWOOD223NT♣Q-2+6
+2.1Round 3REIGNWOOD251NT♠5+2+6
+1.9Round 7WE THE NORTH14♥♦6-2+0
+1.9Round 8ITALY Seniors174♥♦3-1-2
+1.9Round 9DONGFENG FENGSHEN243♥♦7-2+5
+1.7Round 9DONGFENG FENGSHEN254♥♦6+2+11
+1.6Round 5SANMING EDUCATION152♥♠A=+5
+1.6Round 6AUSTRALIA Seniors233♠♣5=+0
+1.5Round 1CHINA HUOCHETOU22♦♠4+2+0
+1.4Round 1CHINA HUOCHETOU102♣x♠2=+2
+1.3Round 5SANMING EDUCATION202♠♣4+2+1
+0.9Round 4CANADA CHINA UNITED62♦♣6-1+0
+0.9Round 6AUSTRALIA Seniors244♣♦10-2+0
+0.8Round 7WE THE NORTH52♠♠2-1-1
+0.6Round 1CHINA HUOCHETOU13♠♥7+1+6
+0.6Round 2USA 1 Seniors131NT♦Q=-1
+0.6Round 4CANADA CHINA UNITED34♥♦3+2+11
+0.6Round 9DONGFENG FENGSHEN272♠♥A+2-6
+0.5Round 1CHINA HUOCHETOU71NT♥5+1+0
+0.5Round 10CRE8IVE34♣♥A=+7
+0.5Round 15AURUSSIA253NT♠9+1+0
+0.3Round 2USA 1 Seniors124♥♦5-1+10
+0.3Round 3REIGNWOOD304♥♠A+1+0
+0.3Round 4CANADA CHINA UNITED14♥♠K+1+0
+0.2Round 11INDONESIA Seniors182♠♣5=+0
+0.2Round 15AURUSSIA243NT♠3+2+0
+0.1Round 5SANMING EDUCATION163♦♠Q=+7
+0.0Round 5SANMING EDUCATION121NT♠J-1+2
-0.0Round 5SANMING EDUCATION173♠♣5=+0
+0.0Round 8ITALY Seniors114♠♥A+1+0
-0.0Round 8ITALY Seniors143NT♣6+2+0
+0.0Round 10CRE8IVE86NT♣7=+11
-0.3Round 3REIGNWOOD245♦♥4=-2
-0.3Round 7WE THE NORTH31NT♥9=+1
-0.4Round 7WE THE NORTH72♦♦3=-1
-0.4Round 11INDONESIA Seniors202♠♣6=+0
-0.5Round 8ITALY Seniors153NT♠7+1+0
-0.5Round 9DONGFENG FENGSHEN263NT♥9+2+12
-0.5Round 11INDONESIA Seniors143♣♦Q+2+1
-0.6Round 2USA 1 Seniors143♦♥7=-5
-0.6Round 6AUSTRALIA Seniors303♥♣K=-6
-0.8Round 2USA 1 Seniors114♥x♣A-2+3
-1.1Round 3REIGNWOOD264♥♠K+2-13
-1.2Round 6AUSTRALIA Seniors281NT♦6+1+1
-1.2Round 9DONGFENG FENGSHEN213♥♠J+1-6
-1.2Round 9DONGFENG FENGSHEN283♥♦4-1-4
-1.3Round 7WE THE NORTH83NT♦5=-11
-1.4Round 4CANADA CHINA UNITED54♥♦A-4-1
-1.5Round 1CHINA HUOCHETOU62♥♦10=+7
-1.5Round 10CRE8IVE91NT♥A=-5
-1.6Round 4CANADA CHINA UNITED101NT♣3+1-1
-1.7Round 8ITALY Seniors185♦♣5=+2
-1.8Round 6AUSTRALIA Seniors222♥♦Q+2-1
-1.9Round 4CANADA CHINA UNITED93♥x♠A-1-7
-1.9Round 15AURUSSIA23Pass-3
-2.1Round 5SANMING EDUCATION142NT♠K=-6
-2.2Round 1CHINA HUOCHETOU52♣♣3+3-7
-2.3Round 1CHINA HUOCHETOU92♦♣A+2+2
-2.3Round 8ITALY Seniors133♠♦3-2-2
-2.4Round 10CRE8IVE64♠♣10-1-6
-2.6Round 5SANMING EDUCATION181NT♠6=+2
-2.7Round 3REIGNWOOD274♥♠2=-3
-2.7Round 10CRE8IVE24♠♥A=-3
-3.1Round 1CHINA HUOCHETOU84♠♦A-1-10
-3.2Round 4CANADA CHINA UNITED43♦♦2+1-11
-3.6Round 10CRE8IVE43♠♠7-2-2
-3.7Round 3REIGNWOOD293♠♥J+1+1
-3.8Round 2USA 1 Seniors163NT♠4=-7
-3.9Round 6AUSTRALIA Seniors213NTx♥J-2-9
-3.9Round 10CRE8IVE73NT♦8+1-1
-4.6Round 11INDONESIA Seniors163NT♠7-2-6
-4.7Round 6AUSTRALIA Seniors262♠♣8-3-5
-5.0Round 6AUSTRALIA Seniors294♠♦J+2-13
-5.1Round 11INDONESIA Seniors114♥♣A=-8
-5.6Round 11INDONESIA Seniors172♥♠2+1-11
-5.7Round 8ITALY Seniors163NT♥2-3-9
-5.9Round 15AURUSSIA263NT♣Q=+1
-6.4Round 9DONGFENG FENGSHEN223NT♠6=-7
-7.1Round 5SANMING EDUCATION133NT♦6-1-12
-7.1Round 15AURUSSIA303NT♥9=-6
-7.2Round 2USA 1 Seniors193NT♦10-2-8
-7.7Round 3REIGNWOOD285♣♠Q-1-11
-7.8Round 3REIGNWOOD232♣x♠J+1-10
-8.0Round 7WE THE NORTH93NT♠6-1-16
-10.4Round 15AURUSSIA214♥x♣J-2-12