JASSEM Krzysztof · MAZURKIEWICZ

45rank
+14.2Butler · 14 bds
+1.01per board
±3.8swing
+3.00vs par /bd
+0.93adjusted /bd
Butler per round: 5.9 8.3by round

vs par split: bidding +1.79 · play +1.21

Strength of schedule: opponents averaged -0.08/bd (an easy draw) → opponent-adjusted +0.93/bd

Card play — on target: declarer play 71.4% · defence 100.0%

Card play by contract type — on target
vs NTvs a suit
Declarer play66.7% (3)75.0% (4)
Defence100.0% (4)100.0% (3)

vs par by strain: NT +4.57 (7) · a suit +1.43 (7)

vs par by level: part-score -0.60 (5) · game +3.50 (8) · slam +17.00 (1)

By role: declaring -0.37/bd (-3.29 vs par · 7) · defending +2.40/bd (+9.29 vs par · 7)

By vulnerability: vulnerable +0.27/bd (+2.14 vs par · 7) · not vulnerable +1.76/bd (+3.86 vs par · 7)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 4M.MazurkiewiczP.Yeung – LELIN -Open7+5.9+0.84+5.71
Round 5M.MazurkiewiczC.Lin – C.ChenOpen7+8.3+1.19+0.29

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
+13.2Round 5YEH BROS TWO63NT♠3+4+17
+4.6Round 4HEY YO236NT♦9-2+17
+2.1Round 4HEY YO273♣♦A+3+6
+1.3Round 5YEH BROS TWO51♥♣A+3+1
+1.0Round 5YEH BROS TWO74♠♦2=+0
+0.7Round 4HEY YO243NT♠5=-2
+0.0Round 4HEY YO223♥♦A=+0
+0.0Round 4HEY YO253NT♣4+2+12
-0.6Round 5YEH BROS TWO22♥♠10+1+0
-0.7Round 4HEY YO264♠♣A+1+13
-0.8Round 4HEY YO283NT♣3-1-6
-1.8Round 5YEH BROS TWO13NT♥7=+0
-1.9Round 5YEH BROS TWO33NT♠J-2-6
-2.9Round 5YEH BROS TWO42♠♣2+2-10