ZHENG Hong · HUBEI YIHUA

91rank
-19.8Butler · 126 bds
-0.16per board
±4.3swing
+0.86vs par /bd · #25/132
-0.07adjusted /bd
Butler per round: 4.2 -2.3 5.1 12.4 -5.8 1.5 -15.8 -0.8 -12.5 12.2 5.3 -5.6 -27.6 -9.8 6.8 4.5 2.9 5.5by round

vs par split: bidding +0.41 · play +0.44

Strength of schedule: opponents averaged +0.08/bd (a tough draw) → opponent-adjusted -0.07/bd

Card play — on target: opening leads 78.1% #84 of 132 · declarer play 64.7% #105 of 132 · defence 91.8% #17 of 132

Card play by contract type — on target
vs NTvs a suit
Opening leads61.5% (13)89.5% (19)
Declarer play77.8% (9)60.0% (25)
Defence90.5% (21)92.5% (40)

Opening leads by suit led: ♠ 50.0% (6) · ♥ 80.0% (5) · ♦ 100.0% (11) · ♣ 70.0% (10)

vs par by strain: NT +2.94 (35) · a suit +0.06 (91)

vs par by level: part-score -0.28 (57) · game +1.49 (63) · slam +5.00 (6)

By role: declaring +0.13/bd (-1.63 vs par · 65) · defending -0.46/bd (+3.51 vs par · 61)

By vulnerability: vulnerable -0.05/bd (+0.02 vs par · 62) · not vulnerable -0.26/bd (+1.67 vs par · 64)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 4J.ChenW.Wang – J.LiuClosed7+4.2+0.60+6.57
Round 5J.ChenS.Wu – Y.ZhangClosed7-2.3-0.33+1.00
Round 6J.ChenB.Fu – H.LiOpen7+5.1+0.73+4.71
Round 7J.ChenL.Wang – Y.ZhouOpen7+12.4+1.77+3.14
Round 8J.ChenL.Gan – Y.HuangOpen7-5.8-0.83-5.57
Round 12J.ChenY.Sun – Z.LiaoOpen7+1.5+0.21-0.29
Round 13J.ChenH.Wu – C.SeetClosed7-15.8-2.26+2.71
Round 14J.ChenF.Mondor – A.TracolClosed7-0.8-0.11+0.71
Round 15J.ChenK.Sanborn – J.Seamon-MolsonOpen7-12.5-1.79-2.86
Round 16J.ChenS.Shi – D.BerkowitzClosed7+12.2+1.74+1.57
Round 17J.ChenS.Willard – B.CronierClosed7+5.3+0.76+2.29
Round 18J.ChenC.Madsen – L.WeingerOpen7-5.6-0.80-1.14
Round 19J.ChenM.Michielsen – M.WortelOpen7-27.6-3.94-4.57
Round 21J.ChenS.Dewi – K.MurniatiOpen7-9.8-1.40-2.29
Round 22J.ChenM.Sakamoto – N.NishidaOpen7+6.8+0.97+2.71
Round 23J.ChenS.Kwon – H.ImClosed7+4.5+0.64+0.71
Round 24J.ChenM.Ohana – K.Belrhiti AlaouiOpen7+2.9+0.41+5.14
Round 25J.ChenL.Dekkers – J.NabClosed7+5.5+0.79+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 16POLLACK223NT♦A+1+14
+9.2Round 24MOROCCAN WOMEN TEAM193NT♦K-2+13
+8.6Round 7BEIJING SHARE SUN163NT♠10-1+12
+8.5Round 18PLATINUM CEM24♠♥Q+1+0
+8.2Round 17JOEL74♠♥K=+0
+7.5Round 22JAPAN LADIES34♥♣10-1+6
+6.6Round 4CHINA ORANGE TEAM273NT♦6-1+10
+6.6Round 17JOEL33NT♠9-1+12
+6.3Round 13SINGAPORE23NT♥A=+3
+6.2Round 6CHINA PINK TEAM104♠x♦A-1+8
+6.2Round 12SHANDONG235♣♦K-1+6
+5.4Round 18PLATINUM CEM45♥x♠4=+5
+5.1Round 25NETHERLANDS253NT♦3-2+7
+4.7Round 18PLATINUM CEM55♥x♦A=+8
+4.6Round 5CHINA RED TEAM43NT♣4+1+0
+4.4Round 6CHINA PINK TEAM123NT♣2-1+10
+4.1Round 8CHINA YELLOW TEAM263NT♠3=+0
+4.1Round 14GWADAGIRLS93♥♠K-1+5
+4.1Round 24MOROCCAN WOMEN TEAM213NT♦3-2+5
+4.0Round 25NETHERLANDS223NT♠9-1+5
+3.6Round 16POLLACK252♠♥6-2+3
+3.4Round 6CHINA PINK TEAM145♣♥A+1+3
+3.4Round 23SCITY81NT♥Q+2+1
+3.3Round 23SCITY144♠♥K+1+0
+3.2Round 12SHANDONG264♠♣5=+9
+3.0Round 7BEIJING SHARE SUN192♥♠7-2+2
+3.0Round 12SHANDONG244♠♦A=+0
+2.5Round 22JAPAN LADIES13♠♣A=+6
+2.4Round 14GWADAGIRLS133♥♦4=+0
+2.4Round 25NETHERLANDS283♦♥6=+1
+2.3Round 15MOSS162♠♣5+1+0
+2.3Round 17JOEL13NT♦3=+0
+2.2Round 4CHINA ORANGE TEAM223♥♦A+1+1
+2.2Round 8CHINA YELLOW TEAM244♥♠Q=-1
+2.2Round 23SCITY135♣♠A=+3
+2.0Round 21PERTAMINA EP254♠♦K+1+1
+1.8Round 22JAPAN LADIES22♠♥6=+0
+1.8Round 25NETHERLANDS262♦♥5+1+1
+1.7Round 19BAKER84♠♦A-3+6
+1.6Round 5CHINA RED TEAM74♠♣3+1+1
+1.6Round 7BEIJING SHARE SUN172♠♦6+2+1
+1.6Round 8CHINA YELLOW TEAM273♠♥A-1-2
+1.6Round 16POLLACK263♥♠5-1+0
+1.6Round 21PERTAMINA EP283♣♠K+1-5
+1.4Round 13SINGAPORE64♥♦9=+11
+1.4Round 16POLLACK273NT♥4=+0
+1.4Round 18PLATINUM CEM74♥♦10+2+1
+1.4Round 21PERTAMINA EP223NT♦6+1+0
+1.1Round 7BEIJING SHARE SUN214♠♣7-1+5
+1.0Round 14GWADAGIRLS115♣♦A=+3
+1.0Round 17JOEL23♠♣A-1-2
+1.0Round 19BAKER134♥♣Q+1-13
+0.9Round 24MOROCCAN WOMEN TEAM163♣♦6+2+10
+0.8Round 15MOSS151♠♦J=-1
+0.8Round 17JOEL42♣♠K+1-1
+0.5Round 21PERTAMINA EP272♥♦6+1+0
+0.4Round 4CHINA ORANGE TEAM243NT♠5+1-1
+0.4Round 5CHINA RED TEAM66♣♠8+1+13
+0.2Round 7BEIJING SHARE SUN204♠♦7+2-13
+0.2Round 16POLLACK283♦♠J+1+0
+0.2Round 23SCITY113NT♠6-1+10
+0.1Round 15MOSS172♠♥6-1-2
+0.0Round 13SINGAPORE11NT♣9+2+6
-0.0Round 16POLLACK242♠♥J+2+6
-0.3Round 6CHINA PINK TEAM113♦♦5-1-2
-0.4Round 4CHINA ORANGE TEAM236NT♦10-1+17
-0.4Round 5CHINA RED TEAM52♥♣A+1+0
-0.5Round 8CHINA YELLOW TEAM231NT♦6+1+0
-0.5Round 22JAPAN LADIES63♠♥K=+10
-0.6Round 7BEIJING SHARE SUN153♠♣K+2+13
-0.6Round 14GWADAGIRLS102♠♦2+1+10
-0.6Round 23SCITY103♠♦K=+0
-0.7Round 22JAPAN LADIES72♦♣A=-2
-0.8Round 14GWADAGIRLS123NT♣3=-1
-0.9Round 5CHINA RED TEAM22♥♣4+1+0
-1.0Round 4CHINA ORANGE TEAM253NT♣4+2+12
-1.1Round 4CHINA ORANGE TEAM283NT♣4-1-6
-1.1Round 14GWADAGIRLS83NT♠3+3-2
-1.2Round 24MOROCCAN WOMEN TEAM151NT♦7-1+0
-1.2Round 25NETHERLANDS234♥♠A-2+9
-1.4Round 12SHANDONG223♠♦A-1+2
-1.4Round 12SHANDONG283NT♠J+4-3
-1.5Round 7BEIJING SHARE SUN181NT♥4=+2
-1.6Round 8CHINA YELLOW TEAM284♥♣3-2-11
-1.7Round 21PERTAMINA EP264♥♦Q+1+0
-1.7Round 22JAPAN LADIES42♥♣6+2-1
-1.8Round 6CHINA PINK TEAM132♠♥A+1+0
-1.8Round 13SINGAPORE43♣♥A-1+1
-1.8Round 23SCITY93♠♥5=+0
-2.0Round 15MOSS212♠♣10=+0
-2.1Round 22JAPAN LADIES52♠♦10+1+0
-2.2Round 23SCITY122♦♦2+2-9
-2.4Round 24MOROCCAN WOMEN TEAM172♠x♠A-2+3
-2.5Round 4CHINA ORANGE TEAM264♠♣A+1+13
-2.6Round 19BAKER102♠♠8+1-7
-2.6Round 21PERTAMINA EP242♠♥10=+0
-3.0Round 15MOSS202♣♣A=+0
-3.0Round 25NETHERLANDS243♥♠3+2-13
-3.1Round 6CHINA PINK TEAM83NT♦J=+1
-3.3Round 13SINGAPORE73♥♠2=+0
-3.6Round 5CHINA RED TEAM33NT♠10-3-7
-3.6Round 25NETHERLANDS273♠♣A+1-4
-3.7Round 6CHINA PINK TEAM94♥♣3=+13
-3.7Round 19BAKER113NT♣4+1+0
-3.8Round 24MOROCCAN WOMEN TEAM203♦♣A=-6
-3.9Round 12SHANDONG252♠♣K+2-7
-3.9Round 24MOROCCAN WOMEN TEAM186♦♥2=+11
-4.0Round 5CHINA RED TEAM13NT♥7=+0
-4.2Round 12SHANDONG272♦♥J-1-9
-4.4Round 8CHINA YELLOW TEAM226♠♣Q-2-13
-4.5Round 17JOEL51NT♠9-1-6
-4.7Round 19BAKER121♠x♥9-3-8
-5.3Round 15MOSS194♥♠Q=-7
-5.3Round 16POLLACK234♠♣J-1-12
-5.4Round 15MOSS184♥♦Q-1-10
-5.8Round 14GWADAGIRLS144♠♣2-1-10
-6.9Round 19BAKER143♦♠8-2-11
-7.1Round 18PLATINUM CEM34♥♠6=-8
-7.2Round 8CHINA YELLOW TEAM255♥♠A-1-12
-7.7Round 13SINGAPORE52♦♥8=-2
-8.0Round 18PLATINUM CEM64♠♣A-4-3
-9.1Round 17JOEL66♠♣J=+13
-10.5Round 18PLATINUM CEM16NT♣J=-11
-10.7Round 13SINGAPORE33NT♠7+1+0
-11.0Round 21PERTAMINA EP235♥♦2-1-12
-12.4Round 19BAKER95♦♥J=+1