🇺🇸 ZHOU Arthur · USA

11rank
+145.2Butler · 156 bds
+0.93per board
±5.1swing
+1.10vs par /bd · #5/92
+0.75adjusted /bd
Butler per round: 21.5 -2.4 6.5 -15.5 24.5 -17.5 20.6 48.3 10.7 -18.2 47.5 21.2 -2by round

vs par split: bidding +0.35 · play +0.76

Strength of schedule: opponents averaged -0.18/bd (an easy draw) → opponent-adjusted +0.75/bd

Card play — on target: opening leads 72.7% #68 of 92 · declarer play 81.4% #12 of 92 · defence 88.9% #8 of 92

Card play by contract type — on target
vs NTvs a suit
Opening leads62.5% (8)76.0% (25)
Declarer play66.7% (12)87.1% (31)
Defence86.7% (15)89.5% (57)

Opening leads by suit led: ♥ 73.3% (15) · ♦ 80.0% (10) · ♣ 62.5% (8)

vs par by strain: NT +0.46 (39) · a suit +1.32 (117)

vs par by level: part-score +2.19 (62) · game +0.58 (83) · slam -1.09 (11)

By role: declaring +2.05/bd (+0.13 vs par · 84) · defending -0.37/bd (+2.24 vs par · 72)

By vulnerability: vulnerable +1.13/bd (+1.42 vs par · 78) · not vulnerable +0.73/bd (+0.78 vs par · 78)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1M.HuR.Bloch – T.ZobelOpen12+21.5+1.79+2.00
Round 2M.HuA.Nilsson – M.Bjoerk HeedClosed12-2.4-0.20+0.42
Round 3M.HuL.Batzia Greenberg – Y.FixelClosed12+6.5+0.54+1.92
Round 4M.HuY.Xie – Y.WangClosed12-15.5-1.29-2.25
Round 5M.HuL.Fegarty – J.FegartyClosed12+24.5+2.04+1.75
Round 7M.HuH.Dong – M.ZhaoOpen12-17.5-1.46-0.17
Round 8M.HuS.Bora – T.AltunClosed12+20.6+1.72+1.92
Round 9M.HuG.Gosalamang – R.LentsweOpen12+48.3+4.02+4.92
Round 10M.HuM.Soumplis – MALLOSIS AIMILIANOSClosed12+10.7+0.89+0.50
Round 12M.HuK.Kuflowski – F.KurlitClosed12-18.2-1.52-1.67
Round 13M.HuMENEZES KAMRYN – PINTO JOHANN JOSEClosed12+47.5+3.96+6.25
Round 15M.HuC.Wang – K.LoOpen12+21.2+1.77+1.58
Round 16M.HuX.Dai – T.ChenOpen12-2.0-0.17-2.83

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
+13.6Round 9BOTSWANA74♥♠5=+15
+13.4Round 1🇫🇷 FRANCE76♥♣7=+13
+10.7Round 3🇮🇱 ISRAEL126♠x♣A-3+12
+10.6Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND104♥♣5=+10
+10.5Round 9BOTSWANA53♠♥K+3+15
+9.8Round 15🇹🇼 CHINESE TAIPEI73NT♠2+2+2
+9.7Round 12🇵🇱 POLAND105♠♦4+2+12
+9.6Round 13🇮🇳 INDIA33NT♣3+1+11
+9.1Round 9BOTSWANA42♠♦A+1+12
+8.9Round 13🇮🇳 INDIA22♠♦A-2+11
+8.6Round 10🇬🇷 GREECE96♣♠J=-2
+8.2Round 15🇹🇼 CHINESE TAIPEI53NT♣10=+10
+8.1Round 10🇬🇷 GREECE123♦♥7=+12
+7.9Round 1🇫🇷 FRANCE123NT♥3+1+11
+7.9Round 8🇹🇷 TURKEY14♥x♦2-1+11
+7.9Round 13🇮🇳 INDIA93NT♠6+1+8
+7.6Round 3🇮🇱 ISRAEL84♥♣9=+3
+7.4Round 8🇹🇷 TURKEY43NT♦2-2+7
+7.4Round 9BOTSWANA112NT♥4-1+11
+7.2Round 16🇨🇳 CHINA 361NT♦6-2+11
+7.1Round 10🇬🇷 GREECE73♠♣J=+10
+6.9Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND113NT♠6=-1
+6.2Round 2🇸🇪 SWEDEN52♥♠Q+2+7
+6.2Round 9BOTSWANA12♥♣9+1+6
+6.1Round 2🇸🇪 SWEDEN74♠♣7-1+12
+6.1Round 15🇹🇼 CHINESE TAIPEI83NT♥K+2+0
+5.8Round 13🇮🇳 INDIA54♠♥2=+7
+5.6Round 4🇨🇳 CHINA 213♥x♠Q-3+3
+5.5Round 16🇨🇳 CHINA 3113NT♦10+4-9
+5.2Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND44♠♥A=+9
+5.1Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND84♠♣A-1+2
+4.8Round 13🇮🇳 INDIA114♠♥5+3+14
+4.6Round 7🇨🇦 CANADA32♥x♠A-1+11
+4.5Round 7🇨🇦 CANADA52NT♥J-3+4
+4.4Round 13🇮🇳 INDIA42♦♥Q=+12
+4.3Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND24♥x♠3-1+0
+4.2Round 8🇹🇷 TURKEY83♥♦2=+1
+4.1Round 1🇫🇷 FRANCE93NT♣Q=+0
+4.1Round 9BOTSWANA122NT♦2+2+7
+4.1Round 13🇮🇳 INDIA124♠♦3+2-11
+4.1Round 15🇹🇼 CHINESE TAIPEI64♥♠A+2+13
+3.9Round 2🇸🇪 SWEDEN104♥♠K-1+6
+3.9Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND14♠♥Q-1+4
+3.9Round 8🇹🇷 TURKEY33NT♦K-2+6
+3.9Round 16🇨🇳 CHINA 344♠♥A=+3
+3.8Round 1🇫🇷 FRANCE34♠♦A+1+0
+3.6Round 15🇹🇼 CHINESE TAIPEI93NT♦6+2+2
+3.6Round 15🇹🇼 CHINESE TAIPEI113♠♠6-2+5
+3.4Round 8🇹🇷 TURKEY72NT♣3+1+1
+3.4Round 16🇨🇳 CHINA 3102♠♦4+1+0
+3.3Round 10🇬🇷 GREECE82♥x♠J-1+0
+3.2Round 1🇫🇷 FRANCE14♥♠K-2+5
+3.2Round 15🇹🇼 CHINESE TAIPEI45♦♣A=+3
+2.8Round 4🇨🇳 CHINA 233♠♦A+1+6
+2.8Round 16🇨🇳 CHINA 374♠♣J+1-13
+2.6Round 8🇹🇷 TURKEY113♠♦2=+0
+2.6Round 12🇵🇱 POLAND23NT♠8+1+0
+2.5Round 3🇮🇱 ISRAEL103NT♦5+2+2
+2.5Round 12🇵🇱 POLAND85♠♣Q+1+1
+2.3Round 3🇮🇱 ISRAEL94♥♠2=+0
+2.3Round 13🇮🇳 INDIA74♠♦8-1+0
+2.1Round 4🇨🇳 CHINA 2124♥♠2+1+0
+2.0Round 4🇨🇳 CHINA 271♠♦7-2+8
+1.7Round 12🇵🇱 POLAND16♦♣5=-2
+1.6Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND31NT♥3=-7
+1.6Round 7🇨🇦 CANADA44♠♣9+1+0
+1.6Round 7🇨🇦 CANADA92♣♦5-1-2
+1.6Round 9BOTSWANA83NT♥2=+1
+1.6Round 13🇮🇳 INDIA103♠♥Q-1+11
+1.5Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND53♦♥A-1+8
+1.4Round 7🇨🇦 CANADA62♠♥J=+1
+1.4Round 8🇹🇷 TURKEY101NT♦2+1+0
+1.4Round 16🇨🇳 CHINA 322♥♣8+1+0
+1.2Round 1🇫🇷 FRANCE21♦♥A+2+7
+1.2Round 3🇮🇱 ISRAEL113♠♥9+1+1
+1.2Round 8🇹🇷 TURKEY53NT♦2+1+0
+1.2Round 9BOTSWANA92♠♥7=-10
+1.1Round 12🇵🇱 POLAND43♣♥2-1+1
+1.1Round 16🇨🇳 CHINA 383♥♥10-1+4
+0.8Round 1🇫🇷 FRANCE44♠♦4=-1
+0.8Round 10🇬🇷 GREECE101NT♥3+1-1
+0.8Round 13🇮🇳 INDIA63♣♣8=+0
+0.6Round 2🇸🇪 SWEDEN65♦♠K=-1
+0.4Round 2🇸🇪 SWEDEN41NT♣4+2-10
+0.4Round 4🇨🇳 CHINA 295♠♣A+1-13
+0.4Round 7🇨🇦 CANADA111♠x♠8-2+3
+0.4Round 9BOTSWANA102♦♥J=+1
+0.3Round 2🇸🇪 SWEDEN33NT♥K+1-1
+0.2Round 9BOTSWANA24♥♣8=+0
+0.2Round 13🇮🇳 INDIA13♦♥Q+2+16
+0.1Round 7🇨🇦 CANADA22♦♣2-1-4
+0.0Round 1🇫🇷 FRANCE114♠♦4=+1
+0.0Round 3🇮🇱 ISRAEL74♠♦A=+3
-0.0Round 4🇨🇳 CHINA 222♠♦10-2+1
-0.2Round 1🇫🇷 FRANCE53NT♥9+1+0
-0.2Round 2🇸🇪 SWEDEN84♥♥6+2+1
-0.2Round 3🇮🇱 ISRAEL34NT♥7+1-14
-0.4Round 12🇵🇱 POLAND32♠♥5+1-1
-0.6Round 10🇬🇷 GREECE14♥♣A=+1
-0.7Round 10🇬🇷 GREECE114♠♣Q-2+1
-0.8Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND92♥♦A-1+2
-0.8Round 15🇹🇼 CHINESE TAIPEI36♣♠9+1-11
-1.1Round 12🇵🇱 POLAND95♥♠3=+0
-1.3Round 3🇮🇱 ISRAEL24♥♠K+1+0
-1.4Round 2🇸🇪 SWEDEN12♥♠K=+1
-1.4Round 4🇨🇳 CHINA 254♠x♥2-2+0
-1.5Round 4🇨🇳 CHINA 2114♥♦4=+0
-1.5Round 7🇨🇦 CANADA13♠♥K-2+5
-1.7Round 10🇬🇷 GREECE34♥♣8+1-1
-1.7Round 16🇨🇳 CHINA 313♣♣2+2-6
-1.8Round 8🇹🇷 TURKEY24♥♦2-2-5
-1.8Round 10🇬🇷 GREECE61NT♣6+1+0
-1.8Round 15🇹🇼 CHINESE TAIPEI23NT♥4=+0
-1.8Round 15🇹🇼 CHINESE TAIPEI102♦♠9-1+1
-1.9Round 2🇸🇪 SWEDEN111NT♦3-1+2
-1.9Round 9BOTSWANA32♦♠2+3+1
-2.0Round 2🇸🇪 SWEDEN121NT♠4=+1
-2.0Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND71NT♠2-1+0
-2.1Round 1🇫🇷 FRANCE84♠♣6+3-2
-2.1Round 8🇹🇷 TURKEY123NT♠4=+1
-2.1Round 15🇹🇼 CHINESE TAIPEI14♠♦3=+0
-2.2Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND62♦♥K+1+0
-2.6Round 10🇬🇷 GREECE53♦♥A=+1
-2.6Round 16🇨🇳 CHINA 354♠♥A+1-4
-2.8Round 1🇫🇷 FRANCE103♥♣3+2-9
-2.9Round 13🇮🇳 INDIA85♦♣4-1-4
-3.3Round 3🇮🇱 ISRAEL44♠♦4+1+0
-3.4Round 4🇨🇳 CHINA 247NT♠A-1-14
-3.4Round 7🇨🇦 CANADA73♥♥9+1-1
-3.6Round 3🇮🇱 ISRAEL65♦♥A+2+17
-3.6Round 8🇹🇷 TURKEY62♠♦6+1+0
-3.6Round 10🇬🇷 GREECE43♥♦J-1-5
-3.6Round 12🇵🇱 POLAND116♦♥3+1+2
-3.8Round 4🇨🇳 CHINA 264♠♦K-1-6
-3.9Round 8🇹🇷 TURKEY95♦♥3=+1
-4.0Round 7🇨🇦 CANADA104♠♣5-2-8
-4.1Round 9BOTSWANA64♥♦7=+0
-4.5Round 12🇵🇱 POLAND63♣x♦K-2-11
-4.6Round 3🇮🇱 ISRAEL55♠♥A-2+0
-4.8Round 3🇮🇱 ISRAEL14♠♥9+2-1
-5.5Round 2🇸🇪 SWEDEN94♠♦9+1+0
-5.5Round 16🇨🇳 CHINA 3125♥♣3=-8
-6.2Round 10🇬🇷 GREECE23NT♣8=-10
-7.4Round 16🇨🇳 CHINA 397♠♣10=+0
-7.8Round 1🇫🇷 FRANCE63NT♥6+1-1
-8.1Round 4🇨🇳 CHINA 2103NT♠Q=+0
-8.4Round 12🇵🇱 POLAND56♣♦A=+2
-8.9Round 2🇸🇪 SWEDEN24♥♦Q-1-13
-8.9Round 12🇵🇱 POLAND73NT♦9=-12
-8.9Round 12🇵🇱 POLAND124♠x♥K=-12
-9.6Round 5🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND124♥♠Q-1-6
-10.0Round 7🇨🇦 CANADA124♥♦5=-11
-10.1Round 16🇨🇳 CHINA 336♦♥3-1-12
-10.2Round 4🇨🇳 CHINA 282♥x♥3+1-12
-10.9Round 15🇹🇼 CHINESE TAIPEI123♠x♦A+1-6
-12.8Round 7🇨🇦 CANADA87♠♦K=+0