CHEN Jien · CHINA OPEN TEAM 1

23rank
+55.1Butler · 84 bds
+0.66per board
±4.2swing
+0.18vs par /bd · #73/196
+0.70adjusted /bd
Butler per round: 19.7 28.4 -8.9 -13 3.5 25.4by round

vs par split: bidding -0.33 · play +0.51

Strength of schedule: opponents averaged +0.04/bd (an average draw) → opponent-adjusted +0.70/bd

Card play — on target: opening leads 80.0% #91 of 196 · declarer play 76.9% #106 of 196 · defence 97.1% #1 of 196

Bidding activity — not a pass: 51.4% #14 of 196 (129/251)

Card play by contract type — on target
vs NTvs a suit
Opening leads66.7% (6)85.7% (14)
Declarer play50.0% (6)85.0% (20)
Defence100.0% (10)95.8% (24)

Opening leads by suit led: ♠ 75.0% (8) · ♥ 75.0% (4) · ♦ 83.3% (6) · ♣ 100.0% (2)

vs par by strain: NT +1.23 (22) · a suit -0.19 (62)

vs par by level: part-score +0.68 (34) · game +0.31 (39) · slam -1.82 (11)

By role: declaring +0.21/bd (-1.82 vs par · 50) · defending +1.31/bd (+3.12 vs par · 34)

By vulnerability: vulnerable +0.87/bd (+1.12 vs par · 42) · not vulnerable +0.45/bd (-0.76 vs par · 42)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 2Y.CaiH.Poon – M.ShengOpen14+19.7+1.41+0.79
Round 3Y.CaiY.Huang – S.SunOpen14+28.4+2.03+2.57
Round 4Y.CaiS.Maskara – A.BhattacharjeeOpen14-8.9-0.64-0.43
Round 6Y.CaiJ.Wolfson – S.GarnerOpen14-13.0-0.93-2.29
Round 7Y.CaiL.Sebbane – T.GuilleminClosed14+3.5+0.25+0.29
Round 8Y.CaiS.De Wijs – B.MullerOpen14+25.4+1.81+0.14

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
+11.3Round 8GOODMAN152♣x♥7-5+9
+10.2Round 2ZHAO255♠x♥A-3+7
+8.7Round 3GX2S132♦x♠J-1+10
+8.7Round 4MAVERICKS203NT♠2=+10
+8.4Round 2ZHAO154♥♦A=+0
+7.0Round 3GX2S76♦♥3-3+16
+6.7Round 3GX2S42♠♠3-2+7
+6.6Round 4MAVERICKS241NT♦5+2+7
+6.3Round 2ZHAO214♥x♣A-2+5
+5.9Round 6WOLFSON264♠♥6=+0
+5.4Round 4MAVERICKS194♠♦3-2+11
+5.0Round 7ALLARD44♣♠A+1+10
+5.0Round 8GOODMAN176♠♥9+1-11
+4.9Round 2ZHAO263NT♠Q+1+11
+4.9Round 3GX2S64♦♠5=+7
+4.7Round 7ALLARD93♠♦9+1+6
+4.7Round 8GOODMAN196♠♦5+1+2
+4.6Round 4MAVERICKS211NT♠3-3-3
+4.5Round 3GX2S82♥♣A=+5
+3.8Round 7ALLARD63♣♠3=+0
+3.5Round 6WOLFSON283NT♥2-1+12
+3.0Round 3GX2S54♥♠A=+0
+2.8Round 7ALLARD26♥♣K+1-11
+2.6Round 8GOODMAN217♥♥9=+0
+2.2Round 2ZHAO171NT♠3=+5
+2.2Round 2ZHAO183NT♠2=+11
+2.1Round 8GOODMAN264♥♦5=+0
+2.0Round 2ZHAO223NT♣J=+7
+1.5Round 8GOODMAN201NT♠A+1+0
+1.2Round 6WOLFSON212♠♥A+3-5
+1.2Round 8GOODMAN185♣♦Q+1+13
+1.1Round 6WOLFSON233NT♦3=+0
+1.0Round 3GX2S94♠♥5-3+1
+1.0Round 6WOLFSON243♥♠8-3-6
+1.0Round 7ALLARD55♦♥6=+0
+0.9Round 3GX2S14♦♠3+1+0
+0.8Round 6WOLFSON274♦♠9=+0
+0.8Round 8GOODMAN243♥♣A-1+2
+0.6Round 8GOODMAN163NT♦4=+1
+0.5Round 4MAVERICKS163♥♠A-1-2
+0.5Round 7ALLARD124♠♦T+1+1
+0.3Round 2ZHAO244♠♦2+1+0
+0.3Round 7ALLARD144♠♣3+2+11
+0.2Round 3GX2S24♠♥A-1-5
+0.2Round 3GX2S32♥♥6+2-2
+0.2Round 6WOLFSON174♠♦K=-1
+0.1Round 2ZHAO233♥♦A-1+1
+0.0Round 8GOODMAN232♥♥A+1+0
-0.0Round 8GOODMAN274♥♣3+2-11
-0.3Round 4MAVERICKS236♠♣J=+0
-0.3Round 7ALLARD86♦x♥3-2+0
-0.4Round 8GOODMAN221NT♠4=-1
-0.4Round 8GOODMAN253♥♠K-1+4
-0.5Round 7ALLARD73NT♦4+1+0
-0.7Round 4MAVERICKS173♣♦A+1-1
-1.2Round 2ZHAO165♠♥K-2-6
-1.2Round 3GX2S113♠♣T-1-4
-1.2Round 6WOLFSON191NT♦A=+2
-1.2Round 7ALLARD13NT♠K-2+0
-1.4Round 4MAVERICKS183♠♣6=+0
-1.5Round 2ZHAO201NT♣4-3-9
-1.7Round 3GX2S143NT♥Q=-2
-1.7Round 7ALLARD101NT♠2+1-1
-2.1Round 3GX2S106♠♣K+1+13
-2.3Round 7ALLARD34♥♦K=+0
-2.4Round 6WOLFSON154♠x♥K-2-5
-2.5Round 7ALLARD114♥♦3-2+0
-2.6Round 2ZHAO283NT♠3=-5
-2.7Round 4MAVERICKS153♥♥K-1+2
-2.8Round 4MAVERICKS225♣♦J=+0
-3.2Round 6WOLFSON253♦♠K-2-2
-3.4Round 4MAVERICKS276♣♠6+1-1
-3.4Round 6WOLFSON204♥♠K-2-9
-3.6Round 8GOODMAN283NT♦3-2-6
-3.7Round 3GX2S124♥♠K+3-10
-3.9Round 4MAVERICKS284♠♦8-1-5
-4.1Round 6WOLFSON164♦♥K-1-6
-5.2Round 2ZHAO196♦♣6-1-11
-5.9Round 6WOLFSON223NT♣3-2-8
-6.1Round 7ALLARD135♣♠6-1-12
-6.4Round 2ZHAO273♥x♥7-2-5
-6.5Round 6WOLFSON183NTx♥J=-4
-9.1Round 4MAVERICKS256♠♦2-1-17
-10.4Round 4MAVERICKS263♥♦Q-5-7