ZHAO Chen · ZHAO

48rank
+68.8Butler · 84 bds
+0.82per board
±3.9swing
+0.48vs par /bd · #175/675
+1.10adjusted /bd
Butler per round: 8.6 22.8 9.7 26.4 17.7 -16.4by round

vs par split: bidding -0.19 · play +0.67

Strength of schedule: opponents averaged +0.28/bd (a tough draw) → opponent-adjusted +1.10/bd

Card play — on target: opening leads 62.5% #632 of 675 · declarer play 89.7% #47 of 675 · defence 92.9% #71 of 675

Bidding activity — not a pass: 48.1% #94 of 675 (113/235)

Card play by contract type — on target
vs NTvs a suit
Opening leads57.1% (7)66.7% (9)
Declarer play90.9% (11)88.9% (18)
Defence83.3% (18)100.0% (24)

Opening leads by suit led: ♠ 60.0% (5) · ♥ 75.0% (4) · ♦ 100.0% (1) · ♣ 50.0% (6)

vs par by strain: NT +1.06 (34) · a suit +0.08 (50)

vs par by level: part-score +1.07 (27) · game +0.29 (51) · slam -0.67 (6)

By role: declaring +0.87/bd (-2.36 vs par · 42) · defending +0.76/bd (+3.31 vs par · 42)

By vulnerability: vulnerable +1.23/bd (+1.57 vs par · 42) · not vulnerable +0.41/bd (-0.62 vs par · 42)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1J.LiuP.Klapper – M.SzczerczakOpen14+8.6+0.61+1.29
Round 2J.LiuC.Mann – L.AnderssonClosed14+22.8+1.63-1.43
Round 4J.LiuP.Janiszewski – D.KowalskiClosed14+9.7+0.69+0.00
Round 5J.LiuR.Nistor – A.KaplanClosed14+26.4+1.89+3.29
Round 6J.LiuC.Stirbu – G.SerpoiOpen14+17.7+1.26+2.43
Round 8J.LiuA.Zamir – O.ToledanoOpen14-16.4-1.17-2.71

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
+9.0Round 1MAGIC114♠♣6-1+11
+8.4Round 4ALTERIS NUCLEAR233NT♦J=+0
+7.9Round 2DINKIN204♥♣6+1+0
+7.8Round 5ANDRESEN43NT♣6-2+13
+7.5Round 2DINKIN227♣♦3=-2
+6.4Round 1MAGIC74♠x♣6-1+13
+6.2Round 1MAGIC33NT♠5-1+6
+5.6Round 5ANDRESEN23NT♣J-1+10
+4.9Round 6CONTRA162♥♣6+3+12
+4.5Round 6CONTRA201NT♣3+2+13
+4.4Round 6CONTRA154♠♥8=+11
+4.3Round 4ALTERIS NUCLEAR263♣♦Q+1+10
+3.9Round 1MAGIC53NT♠5-1+5
+3.7Round 2DINKIN195♣♦K=+0
+3.7Round 2DINKIN214♥♠6-1+5
+3.7Round 4ALTERIS NUCLEAR202♥♦7-3+5
+3.7Round 6CONTRA176♦♣J-1+8
+3.6Round 5ANDRESEN54♥x♥Q-1+0
+3.5Round 5ANDRESEN94NT♦9-3+4
+3.4Round 5ANDRESEN63NT♥J+3+1
+3.3Round 2DINKIN242♣♥7-2+5
+3.3Round 5ANDRESEN123NT♣9-1+10
+3.3Round 6CONTRA243NT♦6+1+1
+3.2Round 4ALTERIS NUCLEAR252♠♥6+2+1
+3.2Round 6CONTRA253♣♦A+1+0
+3.0Round 8EASY STREET214♠♥3=+3
+3.0Round 8EASY STREET264♥♠9+1+0
+2.7Round 1MAGIC144♠♣K-2+5
+2.7Round 5ANDRESEN145♣♠6=+0
+2.7Round 8EASY STREET203NT♦J+2+0
+2.4Round 4ALTERIS NUCLEAR213♣♦Q-2+5
+2.2Round 4ALTERIS NUCLEAR163NT♥5+2+1
+2.1Round 1MAGIC84♠♥6-1+5
+1.9Round 8EASY STREET182NT♣9-1+4
+1.9Round 8EASY STREET193♦♣T+1+0
+1.8Round 1MAGIC12♠♥K-2+5
+1.8Round 6CONTRA281NT♠Q-2-1
+1.7Round 2DINKIN235♣♥K+1-10
+1.7Round 5ANDRESEN113NT♥6=+0
+1.6Round 2DINKIN181NT♦T=+0
+1.5Round 5ANDRESEN73NT♥6+3+13
+1.4Round 4ALTERIS NUCLEAR284♠♦Q+1+0
+1.4Round 5ANDRESEN13NT♣J+1+0
+1.1Round 4ALTERIS NUCLEAR222NT♦Q-1+0
+0.7Round 2DINKIN153NT♣2+1+0
+0.7Round 5ANDRESEN101NT♥T=+5
+0.7Round 6CONTRA223NT♥6+2+0
+0.7Round 8EASY STREET174♠♣3+1-8
+0.3Round 2DINKIN161NT♦9=+5
+0.3Round 2DINKIN255♥♠8=+0
+0.2Round 8EASY STREET233♠♣J+1+1
-0.3Round 4ALTERIS NUCLEAR193♦♦Q+2+10
-0.3Round 6CONTRA193NT♦9+1+0
-0.4Round 5ANDRESEN34♥♦Q=-1
-0.4Round 6CONTRA213♠♥A=+0
-0.5Round 2DINKIN283NT♥3+1+0
-0.7Round 5ANDRESEN83♦♠9=-1
-0.8Round 4ALTERIS NUCLEAR184♠♥K+2-12
-0.8Round 4ALTERIS NUCLEAR273NT♦Q=+0
-0.8Round 8EASY STREET164♥♣K+2-11
-0.9Round 6CONTRA263♣♦6+1-9
-1.0Round 1MAGIC102♥♥6+1-10
-1.0Round 4ALTERIS NUCLEAR153NT♠J=+1
-1.0Round 8EASY STREET152♠♦7+1-1
-1.3Round 1MAGIC24♣♠K=-11
-1.7Round 2DINKIN173♠♥J-4-6
-1.8Round 6CONTRA233NT♣J+3-1
-1.9Round 1MAGIC124♥♦6=+0
-2.1Round 1MAGIC46♠♥T+1+13
-2.1Round 6CONTRA275♦♥6+1-11
-2.4Round 2DINKIN266♣♥T-1-12
-2.5Round 4ALTERIS NUCLEAR244♠♣6-1-10
-3.1Round 8EASY STREET224♠♦K+1-1
-3.3Round 2DINKIN274♠♥6-1-5
-3.3Round 6CONTRA184♥♣6+1+11
-3.5Round 8EASY STREET251NT♥8=-5
-4.5Round 8EASY STREET273NT♦J-2-9
-5.0Round 1MAGIC133NT♠5=-10
-6.0Round 1MAGIC63NT♠J=-11
-6.2Round 1MAGIC94♥♠8=-3
-7.3Round 8EASY STREET287♠♣Q=+0
-7.7Round 5ANDRESEN132NT♥9-2-8
-9.6Round 8EASY STREET245♥♣A-1-11
-11.6Round 4ALTERIS NUCLEAR176NT♠7+1-11