CHEN Yichao · REIGNWOOD

63rank
+6.7Butler · 56 bds
+0.12per board
±3.5swing
+0.21vs par /bd
+0.17adjusted /bd
Butler per round: 10.1 10.1 -3.4 -3.4by round

vs par split: bidding -0.39 · play +0.61

Strength of schedule: opponents averaged +0.05/bd (an average draw) → opponent-adjusted +0.17/bd

Card play — on target: opening leads 84.6% · declarer play 84.6% · defence 91.7%

Card play by contract type — on target
vs NTvs a suit
Opening leads66.7% (3)90.0% (10)
Declarer play100.0% (5)75.0% (8)
Defence87.5% (8)93.8% (16)

Opening leads by suit led: ♠ 66.7% (3) · ♥ 80.0% (5) · ♦ 100.0% (1) · ♣ 100.0% (4)

vs par by strain: NT +0.58 (19) · a suit +0.03 (37)

vs par by level: part-score +0.08 (26) · game -0.88 (25) · slam +6.40 (5)

By role: declaring -0.21/bd (-1.88 vs par · 32) · defending +0.56/bd (+3.00 vs par · 24)

By vulnerability: vulnerable -0.70/bd (-0.39 vs par · 28) · not vulnerable +0.94/bd (+0.82 vs par · 28)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round of 32J.HuK.Mccallum – L.BakerClosed14+1.7+0.12-1.43
Round of 32J.HuK.Mccallum – L.BakerClosed14+8.4+0.60+1.21
Round of 16J.HuW.Starkowski – M.KwiecienClosed14+16.5+1.18+1.14
Round of 16J.HuW.Starkowski – M.KwiecienClosed14-19.9-1.42-0.07

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
+11.0Round of 32USA 1 Women276NT♥2-2+11
+8.1Round of 16POLAND Seniors125♥♠A-1+9
+6.0Round of 16POLAND Seniors244♥♠K-1+10
+5.7Round of 16POLAND Seniors136♥♦A=+8
+5.0Round of 16POLAND Seniors45♣x♠5-3+7
+4.2Round of 32USA 1 Women161NT♣3-1+5
+3.8Round of 32USA 1 Women194NT♥2+2+1
+3.6Round of 32USA 1 Women175♠♥2=+0
+3.0Round of 16POLAND Seniors23♥♠A-1+5
+2.9Round of 32USA 1 Women132♥♣7=+0
+2.5Round of 32USA 1 Women74♥♦A+1+0
+2.4Round of 32USA 1 Women143NT♥3+2+1
+2.4Round of 16POLAND Seniors273NT♠J-2+5
+2.2Round of 32USA 1 Women123♠♥A=+1
+1.9Round of 16POLAND Seniors13♥♣K-1+2
+1.8Round of 16POLAND Seniors114♠♥A+2+1
+1.8Round of 16POLAND Seniors221NTx♥3-1+5
+1.7Round of 32USA 1 Women116NT♥9=+0
+1.4Round of 16POLAND Seniors201NT♣4-1+0
+1.3Round of 32USA 1 Women84♠♥7+2-11
+1.0Round of 16POLAND Seniors92♥♠Q=+1
+0.8Round of 32USA 1 Women282NT♦7=+0
+0.5Round of 32USA 1 Women154♠♦4=+0
+0.5Round of 32USA 1 Women244♥♦A-1-2
+0.5Round of 16POLAND Seniors84♠♥4=+1
+0.5Round of 16POLAND Seniors172♠♠5-3+0
+0.1Round of 32USA 1 Women101NT♦J=-1
+0.1Round of 32USA 1 Women204♠♥9=+0
+0.1Round of 16POLAND Seniors283♠♦Q=+0
-0.0Round of 32USA 1 Women42♠♣A-1+5
+0.0Round of 32USA 1 Women54♠♦10=+0
-0.5Round of 32USA 1 Women14♥♦7=-1
-0.5Round of 32USA 1 Women223NT♠6+1+0
-0.5Round of 16POLAND Seniors53♦♠6-1+2
-0.7Round of 32USA 1 Women24♣♥4=+11
-0.7Round of 16POLAND Seniors102NT♠5=+0
-0.8Round of 32USA 1 Women62♠♣6+1-1
-1.0Round of 16POLAND Seniors144♥♦A=-9
-1.2Round of 16POLAND Seniors183NT♠8=+0
-1.5Round of 16POLAND Seniors233♥♣K=+0
-1.6Round of 16POLAND Seniors33♠♠3-1-2
-1.7Round of 16POLAND Seniors61NT♥J+3-1
-1.9Round of 16POLAND Seniors195♣♠2=+0
-2.6Round of 32USA 1 Women266NT♣10=+13
-2.8Round of 32USA 1 Women185♣♦3-1-5
-3.1Round of 32USA 1 Women236♠♥K=+0
-3.2Round of 32USA 1 Women34NT♠6+2-17
-3.2Round of 32USA 1 Women212♠♣6-1-4
-3.8Round of 16POLAND Seniors213NT♠7-2-5
-3.9Round of 32USA 1 Women253♠♥Q-2-2
-4.3Round of 16POLAND Seniors262NT♦3-3-5
-5.0Round of 16POLAND Seniors74♠x♦5-1-8
-5.0Round of 16POLAND Seniors161NT♠10+1-1
-6.1Round of 16POLAND Seniors252♣x♣4-1-11
-6.2Round of 32USA 1 Women93♥♦3-2-7
-8.3Round of 16POLAND Seniors154♥♠A=+1