ZHANG Xiaofeng · XINYUANKONGGU

255rank
+7.4Butler · 40 bds
+0.18per board
±4.2swing
-0.42vs par /bd
+0.30adjusted /bd
Butler per round: 8.5 -3 14.4 -12.5by round

vs par split: bidding +1.29 · play -1.43

Strength of schedule: opponents averaged +0.12/bd (a tough draw) → opponent-adjusted +0.30/bd

Card play — on target: opening leads 80.0% · declarer play 60.0% · defence 73.3%

Card play by contract type — on target
vs NTvs a suit
Opening leads·80.0% (10)
Declarer play·60.0% (5)
Defence·73.3% (15)

Opening leads by suit led: ♠ 66.7% (3) · ♥ 100.0% (2) · ♦ 100.0% (3) · ♣ 50.0% (2)

vs par by strain: a suit -0.14 (28)

vs par by level: part-score +1.20 (10) · game +0.40 (15) · slam -7.33 (3)

By role: declaring +0.01/bd (-3.20 vs par · 20) · defending +0.36/bd (+2.35 vs par · 20)

By vulnerability: vulnerable +0.22/bd (-0.46 vs par · 22) · not vulnerable +0.14/bd (-0.39 vs par · 18)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 6T.JiangV.Aronov – A.ZobuClosed10+8.5+0.85+1.90
Round 9T.JiangB.Levin – S.WeinsteinClosed10-3.0-0.30-0.80
Round 11T.JiangJ.Harsanyi – M.YuenClosed10+14.4+1.44+1.60
Round 13T.JiangX.Lin – G.XinOpen10-12.5-1.25-4.40

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
+7.3Round 6POPOVA243Nx♠7-2+9
+7.1Round 9GORDON224♠♦6=+5
+6.9Round 13SHANGHAI JIAHENG63N♥6+3-10
+6.1Round 11MUNICH133♥♣4-2+7
+5.4Round 6POPOVA234♥♦4-1+6
+5.3Round 6POPOVA216♥♣A-1+11
+4.7Round 11MUNICH163N♥4+2+0
+4.1Round 13SHANGHAI JIAHENG24♥♣5+1+0
+4.0Round 11MUNICH122♥♠4-1+11
+3.5Round 11MUNICH143N♠4+2-14
+3.3Round 11MUNICH184♣♣J+1+2
+3.0Round 9GORDON304♠♦K-1+5
+1.3Round 11MUNICH172♥♣K-1+4
+1.2Round 11MUNICH194♠♣J+1+1
+1.1Round 6POPOVA264♠♥Q=+5
+0.9Round 9GORDON244♥♦2=-5
+0.9Round 11MUNICH203N♠5+2+13
+0.8Round 13SHANGHAI JIAHENG33N♥7+2+0
+0.2Round 6POPOVA274♥♦Q-1+5
+0.2Round 9GORDON231N♥5+1+0
-0.0Round 6POPOVA284N♥4+1+0
-0.0Round 13SHANGHAI JIAHENG94♠♠2+1+0
-0.3Round 13SHANGHAI JIAHENG103♦♠J+2-1
-0.4Round 6POPOVA303N♠2-1-5
-0.4Round 13SHANGHAI JIAHENG74♥♠7=+1
-0.5Round 9GORDON292♠♥Q-1+0
-0.6Round 9GORDON283N♥10+1+5
-1.0Round 6POPOVA223♥♦K=-6
-1.2Round 13SHANGHAI JIAHENG14♠♣4=+0
-1.5Round 9GORDON273♣♠J-2+1
-2.3Round 9GORDON253N♠7-1-6
-2.9Round 11MUNICH154♠♣A-1+2
-3.3Round 6POPOVA253♥♥5=+0
-3.7Round 9GORDON213N♣8=-5
-5.2Round 13SHANGHAI JIAHENG44♠♠J+2-1
-5.6Round 9GORDON264♠♠6-2-8
-6.1Round 6POPOVA293♣♠K=-6
-6.8Round 13SHANGHAI JIAHENG87♠♦J-1-17
-7.7Round 11MUNICH115♦♦5-1-10
-10.4Round 13SHANGHAI JIAHENG56♦♠8-1-16