DONG Shanfeng · SHAN FENG

133rank
+56.4Butler · 129 bds
+0.44per board
±4.3swing
-0.16vs par /bd · #400/672
+0.27adjusted /bd
Butler per round: -42.7 11.7 -5.5 5.9 33.8 7 16.7 -6.2 23.8 -7.4 0.6 15.5 3.2by round

vs par split: bidding +0.10 · play -0.04

Strength of schedule: opponents averaged -0.17/bd (an easy draw) → opponent-adjusted +0.27/bd

Card play — on target: opening leads 80.0% #377 of 671 · declarer play 77.3% #350 of 671 · defence 80.0% #507 of 672

Card play by contract type — on target
vs NTvs a suit
Opening leads·80.0% (20)
Declarer play·77.3% (22)
Defence·80.0% (40)

Opening leads by suit led: ♠ 100.0% (2) · ♥ 50.0% (2) · ♦ 66.7% (9) · ♣ 100.0% (7)

vs par by strain: a suit +0.05 (94)

vs par by level: part-score +0.51 (43) · game +0.49 (43) · slam -4.75 (8)

By role: declaring +0.14/bd (-2.35 vs par · 71) · defending +0.80/bd (+2.52 vs par · 58)

By vulnerability: vulnerable +0.20/bd (-0.61 vs par · 71) · not vulnerable +0.73/bd (+0.38 vs par · 58)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1R.LiR.Klinger – D.HoffmanClosed9-42.7-4.74-5.89
Round 2R.LiG.Chua – J.ChooClosed10+11.7+1.17-2.80
Round 3R.LiC.Yu – J.LvOpen10-5.5-0.55-2.10
Round 4R.LiK.Sung – S.KwonOpen10+5.9+0.59+0.50
Round 5R.LiZ.Li – Y.WuOpen10+33.8+3.38+4.50
Round 6R.LiP.Delaney – S.O'LubaighOpen10+7.0+0.70+2.10
Round 7R.LiC.Wang – J.ZhuClosed10+16.7+1.67+0.80
Round 8R.LiD.Yen – N.ShenOpen10-6.2-0.62-0.10
Round 9R.LiZ.Li – Y.GuOpen10+23.8+2.38+3.60
Round 10R.LiT.Teramoto – H.YokoiOpen10-7.4-0.74-2.00
Round 11Q.TanG.Lin – J.HeOpen10+0.6+0.06+0.70
Round 13Q.TanC.Yinong – C.EndangOpen10+15.5+1.55-3.30
Round 15R.LiN.Liu – J.WuClosed10+3.2+0.32+1.30

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
+11.6Round 13SHANGHAI GOODWAY74♥♠9-1+13
+10.8Round 9TONGJI UNIVERSITY304♠x♠J+1+11
+8.4Round 13SHANGHAI GOODWAY86♠♠3=-11
+8.3Round 2SCTT195♦x♣4-2+10
+7.9Round 7PEKING UNIVERSITY54♠x♦Q=+9
+7.8Round 4HAPPY BRIDGE23♦♦3=+8
+7.6Round 3NINGBOYONGGUAN232♥x♣K-1+10
+7.1Round 2SCTT146♦♣7+1-15
+6.9Round 3NINGBOYONGGUAN273N♥8+1+7
+6.9Round 15SHANGHAI KEJU256♠♥3-3+17
+6.5Round 13SHANGHAI GOODWAY63N♦2+2-11
+5.8Round 6DELANEY291Nx♣2+1+6
+5.6Round 5LIANHUA144♣x♦A-2+5
+5.3Round 6DELANEY216♥♣A-1+11
+5.2Round 5LIANHUA123N♣9-2+6
+5.2Round 5LIANHUA133N♠2=+5
+5.1Round 9TONGJI UNIVERSITY292♠♥K=+6
+5.0Round 7PEKING UNIVERSITY86♠x♦3-2+0
+4.7Round 11HUATIE HAIXING164♠♣9+1+0
+4.5Round 9TONGJI UNIVERSITY253N♠7-2+8
+4.5Round 10YANAGISAWA103♠♣5-1+6
+4.2Round 5LIANHUA193♠♥6=+6
+4.1Round 11HUATIE HAIXING174♠♣Q-3+6
+4.0Round 2SCTT163Nx♠5-1+5
+3.9Round 3NINGBOYONGGUAN304♠♥A=-5
+3.9Round 4HAPPY BRIDGE53♣♣3-3+2
+3.9Round 5LIANHUA111N♠Q=+0
+3.8Round 7PEKING UNIVERSITY73♠♣A=+0
+3.7Round 4HAPPY BRIDGE63♣♠Q-1+12
+3.7Round 9TONGJI UNIVERSITY213N♦2=+5
+3.7Round 10YANAGISAWA43♣♥J-1+1
+3.6Round 7PEKING UNIVERSITY24♠♦4-2+2
+3.4Round 8RIGHT CALL123N♣10-2+6
+3.3Round 13SHANGHAI GOODWAY24♥♣2=-1
+3.1Round 9TONGJI UNIVERSITY264♠♠4-1+6
+3.1Round 10YANAGISAWA31N♣Q-5+3
+2.9Round 5LIANHUA172♠♦10=+6
+2.8Round 15SHANGHAI KEJU261Nx♦10=+1
+2.7Round 5LIANHUA155♦♠J+1+11
+2.7Round 15SHANGHAI KEJU272N♦6-1+5
+2.4Round 2SCTT154♥♠9+2+1
+2.3Round 5LIANHUA184♠♣A-1+5
+2.3Round 8RIGHT CALL193♥♣3-1+5
+2.1Round 11HUATIE HAIXING183♣♠4=+0
+1.9Round 2SCTT111N♥3+1+0
+1.8Round 2SCTT123♥♣4=+0
+1.8Round 6DELANEY243♦♥10-1+5
+1.6Round 9TONGJI UNIVERSITY222♠♦6+3+6
+1.6Round 11HUATIE HAIXING122♠♦8+1+10
+1.5Round 7PEKING UNIVERSITY31N♣A-3-8
+1.4Round 4HAPPY BRIDGE83♠♦Q=+0
+1.4Round 8RIGHT CALL113♣♦7+2+4
+1.2Round 5LIANHUA162♦♥2=+2
+1.2Round 11HUATIE HAIXING194♠♣J+1+1
+1.2Round 15SHANGHAI KEJU231N♥2-1+5
+1.1Round 6DELANEY231♣♥Q+1+2
+1.1Round 6DELANEY264♠♥Q=+5
+1.0Round 15SHANGHAI KEJU294♠♣A=+0
+0.9Round 7PEKING UNIVERSITY64♥♥6+1+0
+0.9Round 8RIGHT CALL152♥♠K=-1
+0.7Round 9TONGJI UNIVERSITY231N♠7=+1
+0.6Round 1HOFFMAN13♠♥8-3+7
+0.6Round 1HOFFMAN24♠x♦10-2+0
+0.6Round 5LIANHUA204♠♣K=-1
+0.4Round 3NINGBOYONGGUAN242♠♣K+1+0
+0.4Round 9TONGJI UNIVERSITY285♦♠A+1-5
+0.2Round 2SCTT203N♥8+3-13
+0.2Round 6DELANEY274♥♦K-1+5
+0.2Round 15SHANGHAI KEJU224♠♦8+1+5
+0.1Round 7PEKING UNIVERSITY14♥♠2=+1
+0.1Round 11HUATIE HAIXING203N♠4+3+13
+0.1Round 13SHANGHAI GOODWAY53N♥5+1-12
-0.0Round 6DELANEY283N♠8+2+0
+0.0Round 10YANAGISAWA73♦♠K-1+9
-0.2Round 7PEKING UNIVERSITY44♥♠9=-1
-0.2Round 13SHANGHAI GOODWAY34♠♦5=-1
-0.2Round 15SHANGHAI KEJU211♠♣Q+2+0
-0.3Round 3NINGBOYONGGUAN211N♣9+1-1
-0.3Round 3NINGBOYONGGUAN225♣♦J=-5
-0.3Round 10YANAGISAWA54♠♦2+2-11
-0.4Round 4HAPPY BRIDGE73♣♦Q=+1
-0.6Round 4HAPPY BRIDGE33N♦2=+2
-0.6Round 8RIGHT CALL173N♥7=+6
-0.7Round 1HOFFMAN104♥♠4+1-4
-0.8Round 1HOFFMAN62♠♦5-1+0
-0.8Round 7PEKING UNIVERSITY94♥♦A+2+11
-0.9Round 8RIGHT CALL134♠♥A+2-7
-1.0Round 8RIGHT CALL181N♠J=+1
-1.0Round 13SHANGHAI GOODWAY94♠♥2+2-1
-1.1Round 8RIGHT CALL142♠♣2=+0
-1.1Round 11HUATIE HAIXING133♣♥Q-1+0
-1.2Round 13SHANGHAI GOODWAY14♠♣4=+0
-1.3Round 3NINGBOYONGGUAN293N♥K+1+1
-1.3Round 4HAPPY BRIDGE92♥♦A-1-4
-1.4Round 10YANAGISAWA64♠♣A+1-1
-1.4Round 15SHANGHAI KEJU281N♣5+1+0
-1.6Round 2SCTT184♠♦2-1-4
-1.7Round 10YANAGISAWA82N♥Q=-5
-1.9Round 9TONGJI UNIVERSITY244♥♦2+1+5
-2.1Round 6DELANEY305♦♥7-2-6
-2.4Round 4HAPPY BRIDGE14♥x♠K-1+0
-2.4Round 6DELANEY252♥♦8=+1
-2.6Round 3NINGBOYONGGUAN251Nx♠8=-3
-2.7Round 4HAPPY BRIDGE43♦♣Q+2-10
-3.0Round 2SCTT132♠♣6=+1
-3.2Round 11HUATIE HAIXING144♦♥K+2-15
-3.5Round 4HAPPY BRIDGE103N♠2-1-6
-3.6Round 13SHANGHAI GOODWAY44♠♣J=+1
-3.8Round 6DELANEY223♥♥Q-5-8
-3.8Round 8RIGHT CALL164♠♥A-1-5
-4.2Round 9TONGJI UNIVERSITY271♦x♥A=-7
-4.3Round 11HUATIE HAIXING155♠♣A-2+0
-4.4Round 10YANAGISAWA95♦x♠K-1-5
-4.6Round 11HUATIE HAIXING113♥♦A-2-8
-4.7Round 10YANAGISAWA13♣♦A-4-7
-5.0Round 15SHANGHAI KEJU242♥x♠7-2-9
-5.0Round 15SHANGHAI KEJU303N♠3-1-11
-5.1Round 7PEKING UNIVERSITY103♥♦K-1-6
-6.2Round 10YANAGISAWA23N♥A-1-10
-6.3Round 3NINGBOYONGGUAN284♥♣6-1-11
-6.8Round 1HOFFMAN43♦♦2-2-8
-6.8Round 8RIGHT CALL203♠♦J=-10
-7.5Round 1HOFFMAN36♣♦A-1-13
-8.2Round 1HOFFMAN83Nx♥10-2-9
-8.3Round 1HOFFMAN73N♠J-2-13
-8.4Round 13SHANGHAI GOODWAY103N♠Q=-10
-9.4Round 2SCTT175♣x♠J=-13
-11.6Round 1HOFFMAN96♣♥10-1-13
-13.5Round 3NINGBOYONGGUAN266♣♦A=-14