ZHANG Yukun · SINGAPORE

1rank
+32.3Butler · 20 bds
+1.61per board
±5.3swing
+0.65vs par /bd
+1.16adjusted /bd
Butler per round: 5.8 26.5by round

vs par split: bidding +1.10 · play -0.45

Strength of schedule: opponents averaged -0.46/bd (an easy draw) → opponent-adjusted +1.16/bd

Card play — on target: opening leads 80.0% · declarer play 44.4% · defence 88.9%

Card play by contract type — on target
vs NTvs a suit
Opening leads0.0% (1)100.0% (4)
Declarer play33.3% (3)50.0% (6)
Defence100.0% (1)87.5% (8)

Opening leads by suit led: ♥ 50.0% (2) · ♦ 100.0% (2) · ♣ 100.0% (1)

vs par by strain: NT -2.75 (4) · a suit +1.50 (16)

vs par by level: part-score +1.12 (8) · game -0.82 (11) · slam +13.00 (1)

By role: declaring +0.91/bd (-1.91 vs par · 11) · defending +2.48/bd (+3.78 vs par · 9)

By vulnerability: vulnerable -1.53/bd (-2.67 vs par · 9) · not vulnerable +4.19/bd (+3.36 vs par · 11)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 6K.FongJ.Zanalda – A.MadalaClosed10+5.8+0.58+0.80
Round 8K.FongP.Meijer – R.CabriClosed10+26.5+2.65+0.50

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
+12.2Round 8RESPOND186♠♥K-2+13
+9.5Round 8RESPOND152♠♦K+3+10
+8.0Round 8RESPOND144♥♣J=+8
+7.0Round 8RESPOND113NT♦6=+6
+6.6Round 6ARGENTINA273♠♣5=+11
+5.5Round 6ARGENTINA214♠♣10-1+5
+3.0Round 8RESPOND124♥♠K-2+1
+2.8Round 8RESPOND172♥♣J=+0
+2.6Round 6ARGENTINA253♦♥6-1+5
+2.5Round 6ARGENTINA222♠♥K+1-7
+2.5Round 6ARGENTINA283NT♥6-2+5
+0.8Round 6ARGENTINA234♥♥5=-1
-1.1Round 6ARGENTINA302♣♣6+1+0
-1.9Round 6ARGENTINA263♦♣4=+0
-2.3Round 8RESPOND134♥♦7+1-4
-3.4Round 8RESPOND194♠♦A-2-7
-4.3Round 8RESPOND163NT♠2-2-12
-4.7Round 6ARGENTINA294♠♦J+1+0
-6.0Round 8RESPOND202♥♣10+2-10
-7.0Round 6ARGENTINA243NT♥4-1-10