CHENG Qiang · YANG JING

433rank
-13.2Butler · 120 bds
-0.11per board
±4.6swing
+0.22vs par /bd · #240/672
+0.11adjusted /bd
Butler per round: 0.1 7.3 -6.9 2.9 17.5 -0 -17.8 -19.6 3.2 19.7 10.6 -30.2by round

vs par split: bidding -0.31 · play -0.03

Strength of schedule: opponents averaged +0.22/bd (a tough draw) → opponent-adjusted +0.11/bd

Card play — on target: opening leads 75.9% #487 of 671 · declarer play 73.9% #427 of 671 · defence 93.3% #55 of 672

Card play by contract type — on target
vs NTvs a suit
Opening leads·75.9% (29)
Declarer play·73.9% (23)
Defence·93.3% (45)

Opening leads by suit led: ♠ 100.0% (2) · ♥ 71.4% (7) · ♦ 66.7% (12) · ♣ 87.5% (8)

vs par by strain: a suit -0.34 (87)

vs par by level: part-score +0.00 (37) · game +0.41 (42) · slam -5.88 (8)

By role: declaring +0.03/bd (-1.62 vs par · 58) · defending -0.24/bd (+1.94 vs par · 62)

By vulnerability: vulnerable -0.74/bd (+0.10 vs par · 60) · not vulnerable +0.52/bd (+0.33 vs par · 60)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 2J.LiuC.Hu – C.LiOpen10+0.1+0.01+3.60
Round 3J.LiuF.Zimmermann – H.KondochOpen10+7.3+0.73+0.40
Round 5J.LiuB.Fallenius – P.FredinClosed10-6.9-0.69+0.00
Round 6J.LiuW.Stuart – G.VenkateshClosed10+2.9+0.29+1.40
Round 7J.LiuJ.Li – L.LinClosed10+17.5+1.75+3.10
Round 8J.LiuK.Strykier – T.PrzyboraClosed10-0.0-0.00+0.30
Round 9J.LiuF.Baroni – M.RicciarelliOpen10-17.8-1.78-1.70
Round 11J.AiS.Liu – Y.LiangOpen10-19.6-1.96-2.40
Round 12J.LiuA.Zhi – D.HuClosed10+3.2+0.32+0.00
Round 13J.LiuP.Delaney – S.O'LubaighOpen10+19.7+1.97-1.70
Round 14J.AiJ.Wilkinson – S.NewtonOpen10+10.6+1.06+3.80
Round 15J.AiZ.Lu – J.QianOpen10-30.2-3.02-4.20

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
+12.3Round 7GUANGDONG43N♣5-1+13
+11.1Round 13DELANEY56♦♣K=+0
+9.8Round 14SOLOMON164♠♦K-1+12
+9.7Round 7GUANGDONG64♣♦A-3+11
+9.5Round 3GERMANY JUNIORS284♠x♣K-4+9
+8.4Round 13DELANEY86♠♦Q=-11
+7.8Round 14SOLOMON184♥♥4=+5
+7.7Round 3GERMANY JUNIORS273N♥7+2+8
+7.6Round 12YUNNAN DIKUANG223N♥4+2+8
+6.9Round 3GERMANY JUNIORS243N♣10+1+7
+6.9Round 13DELANEY103Nx♥5-1+8
+6.6Round 12YUNNAN DIKUANG284♠♦K=+5
+5.9Round 3GERMANY JUNIORS263N♣5-1+5
+5.3Round 6TEXAN ACES216♥♣A-1+11
+5.2Round 5MAHAFFEY133N♣6=+5
+4.1Round 13DELANEY24♥♣2+1+0
+4.0Round 5MAHAFFEY122♥♦K-1+5
+3.9Round 2SHANGHAI YOUTH 4145♦♠5+2+18
+3.8Round 14SOLOMON114♥♦6-2+0
+3.7Round 9BURGAY213N♣8=+5
+3.5Round 7GUANGDONG55♠♦Q-1+6
+3.5Round 12YUNNAN DIKUANG292♠♦K=+5
+3.4Round 8AUTO-HIT WARSZAWA123N♣10-2+6
+3.3Round 11HUBEI DONGFENG113♦♥A+2+7
+3.1Round 9BURGAY264♠♦8-1+6
+2.8Round 2SHANGHAI YOUTH 4122♣♥8-1+5
+2.6Round 8AUTO-HIT WARSZAWA204♠♣3=+0
+2.5Round 12YUNNAN DIKUANG263♣♦3=+6
+2.4Round 8AUTO-HIT WARSZAWA182♠♥3-1+4
+2.3Round 8AUTO-HIT WARSZAWA193♥♣3-1+5
+2.2Round 15ZHEJIANG ZHENGYUAN281N♣5=+1
+2.0Round 2SHANGHAI YOUTH 4172♥♠J+2+9
+2.0Round 6TEXAN ACES265♠♥Q=+5
+1.8Round 7GUANGDONG94♥♠6+3-10
+1.6Round 2SHANGHAI YOUTH 4184♠♥A-1+4
+1.6Round 14SOLOMON123♠♠5-1-2
+1.4Round 14SOLOMON172♦♣3-1+2
+1.3Round 9BURGAY283N♠A+2-4
+1.3Round 12YUNNAN DIKUANG304♥♦A-1+5
+1.2Round 11HUBEI DONGFENG132♥♠5=+1
+1.1Round 6TEXAN ACES231♣♦4+1+2
+1.1Round 8AUTO-HIT WARSZAWA162♠♥A+1+0
+1.0Round 5MAHAFFEY142♠♦9=+0
+1.0Round 6TEXAN ACES284N♥4=+1
+0.9Round 2SHANGHAI YOUTH 4193♦♣A+1+0
+0.8Round 13DELANEY33N♦10+2+0
+0.7Round 2SHANGHAI YOUTH 4203N♥6+2+13
+0.7Round 9BURGAY231N♥4=+1
+0.7Round 15ZHEJIANG ZHENGYUAN242N♠5-2+5
+0.6Round 3GERMANY JUNIORS211N♥9+2+0
+0.6Round 5MAHAFFEY204♠♣A=-1
+0.5Round 14SOLOMON191N♠7+1+6
+0.3Round 5MAHAFFEY161N♦5+1+1
+0.2Round 6TEXAN ACES274♥♦K-1+5
+0.1Round 2SHANGHAI YOUTH 4112♥♣10-1+2
-0.0Round 3GERMANY JUNIORS251N♠8=+0
+0.0Round 7GUANGDONG31N♣Q-2+9
-0.0Round 13DELANEY94♠♥2+1+0
-0.1Round 7GUANGDONG14♥♣2=-1
-0.2Round 11HUBEI DONGFENG194♠♥8=+0
-0.2Round 15ZHEJIANG ZHENGYUAN224♠♠2+1-5
-0.4Round 6TEXAN ACES303N♠2-1-5
-0.5Round 12YUNNAN DIKUANG235♦♠6-1-6
-0.6Round 14SOLOMON135♠♣K+1+6
-0.7Round 7GUANGDONG102♥♣Q+1+0
-0.8Round 12YUNNAN DIKUANG253N♥5+2-6
-0.9Round 8AUTO-HIT WARSZAWA134♠♥A+2-7
-0.9Round 9BURGAY244♥♦6=+5
-0.9Round 11HUBEI DONGFENG203N♠5+2-13
-1.0Round 6TEXAN ACES292♥♣4-1-1
-1.0Round 15ZHEJIANG ZHENGYUAN294♠♣K=+0
-1.1Round 6TEXAN ACES223♥♥Q-3-6
-1.1Round 8AUTO-HIT WARSZAWA142♥♠3=+0
-1.2Round 5MAHAFFEY113♣♣K-2-5
-1.2Round 5MAHAFFEY172♠♠9-1+2
-1.2Round 13DELANEY14♠♣4=+0
-1.2Round 15ZHEJIANG ZHENGYUAN231N♥2-1-5
-1.3Round 3GERMANY JUNIORS293N♥K+1+1
-1.3Round 11HUBEI DONGFENG173♦♣A-1-4
-1.3Round 13DELANEY74♥♠9+1+0
-1.5Round 8AUTO-HIT WARSZAWA173N♥7+1+5
-1.6Round 7GUANGDONG85♠x♣J-1+5
-1.7Round 2SHANGHAI YOUTH 4154♥♣10+1+0
-1.7Round 11HUBEI DONGFENG153♠♦Q=-6
-1.8Round 6TEXAN ACES242♦♥10=+1
-1.9Round 9BURGAY292♠♥Q-2-3
-2.0Round 11HUBEI DONGFENG145♦♥K=+14
-2.1Round 11HUBEI DONGFENG183♣♠4=+0
-2.3Round 3GERMANY JUNIORS234♠♥2+1+0
-2.4Round 5MAHAFFEY183♠♣A=+0
-2.4Round 6TEXAN ACES252♥♦8=+1
-2.6Round 5MAHAFFEY192♥♣6+1-1
-2.7Round 15ZHEJIANG ZHENGYUAN274♥♦7-1-5
-2.8Round 11HUBEI DONGFENG122♥♦A-2-11
-2.8Round 14SOLOMON204♠♠6=+0
-3.2Round 14SOLOMON153♦♦J+1-1
-3.3Round 9BURGAY273♦♥5-2-6
-3.3Round 12YUNNAN DIKUANG243N♣8-1+3
-3.6Round 7GUANGDONG24♠♣2-2-2
-3.7Round 8AUTO-HIT WARSZAWA154♥♦Q-1-6
-3.8Round 7GUANGDONG73♠♥3=+0
-4.0Round 2SHANGHAI YOUTH 4163N♠J-2-5
-4.3Round 15ZHEJIANG ZHENGYUAN303N♠3=+3
-4.4Round 9BURGAY304♠x♣K-1-6
-4.5Round 13DELANEY66♠♦2-1-14
-4.6Round 8AUTO-HIT WARSZAWA113N♣10+1-4
-4.6Round 13DELANEY45♠♥3=+0
-5.6Round 15ZHEJIANG ZHENGYUAN256♠♥3-2-17
-5.9Round 15ZHEJIANG ZHENGYUAN214♠♣Q=-7
-6.2Round 2SHANGHAI YOUTH 4133♥♣4-3-10
-6.3Round 12YUNNAN DIKUANG214♥♣2=-8
-7.1Round 9BURGAY224♠♣3=-5
-7.4Round 12YUNNAN DIKUANG275♥♠A-1-12
-7.7Round 14SOLOMON146♠♥J=+10
-9.0Round 9BURGAY253N♦5=-10
-9.7Round 3GERMANY JUNIORS226♣♠4-1-12
-10.0Round 3GERMANY JUNIORS306♠x♦J-2-14
-10.6Round 5MAHAFFEY156Nx♥7=-6
-12.2Round 15ZHEJIANG ZHENGYUAN262♣x♣2-3-12
-13.1Round 11HUBEI DONGFENG165♦x♦Q-6-12