🇺🇸 GROSSACK Zachary · USA

1rank
+168.3Butler · 126 bds
+1.34per board
±5.2swing
+0.41vs par /bd · #6/21
+1.02adjusted /bd
Butler per round: -13.5 -13.5 -13.5 83.7 83.7 83.7 98.1 98.1 98.1by round

vs par split: bidding +0.15 · play +0.26

Strength of schedule: opponents averaged -0.32/bd (an easy draw) → opponent-adjusted +1.02/bd

Card play — on target: opening leads 83.3% #5 of 21 · declarer play 81.1% #7 of 21 · defence 84.6% #12 of 21

Card play by contract type — on target
vs NTvs a suit
Opening leads71.4% (7)87.0% (23)
Declarer play72.7% (11)84.6% (26)
Defence87.5% (16)83.3% (36)

Opening leads by suit led: ♠ 83.3% (6) · ♥ 77.8% (9) · ♦ 87.5% (8) · ♣ 85.7% (7)

vs par by strain: NT +1.62 (37) · a suit -0.09 (89)

vs par by level: part-score +0.94 (46) · game +1.22 (69) · slam -6.82 (11)

By role: declaring +1.67/bd (-0.77 vs par · 74) · defending +0.86/bd (+2.10 vs par · 52)

By vulnerability: vulnerable +1.66/bd (+0.32 vs par · 63) · not vulnerable +1.01/bd (+0.51 vs par · 63)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
QuarterfinalA.GrossackB.Norton – N.AptekerOpen14+16.1+1.15-0.29
QuarterfinalA.GrossackB.Norton – N.AptekerOpen14-7.8-0.56+0.36
QuarterfinalA.GrossackB.Norton – N.AptekerOpen14-21.8-1.56-5.93
SemifinalA.GrossackY.Yin – Y.ZhouClosed14+0.5+0.04-0.07
SemifinalA.GrossackY.Yin – N.SiClosed14+23.1+1.65+4.71
SemifinalA.GrossackY.Yin – Y.ZhouClosed14+60.1+4.29+2.43
FinalA.GrossackE.Imakiire – K.KobayashiClosed14+45.0+3.21-0.14
FinalA.GrossackD.Neo – S.SonoikeClosed14+30.4+2.17-0.07
FinalA.GrossackS.Sonoike – R.YamadaClosed14+22.7+1.62+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
+13.3SemifinalSYNREY RDFZ464♠x♥9=+9
+12.3SemifinalSYNREY RDFZ373NTx♦J=+10
+12.3SemifinalSYNREY RDFZ544♥♣2=+9
+12.3Final🇯🇵 JAPAN93NT♠2=+12
+12.3Final🇯🇵 JAPAN102♠x♣8=+13
+12.0Final🇯🇵 JAPAN322♣x♦Q-3+12
+11.7SemifinalSYNREY RDFZ23♦x♣2-3+12
+11.0Final🇯🇵 JAPAN564♥♣3+2+2
+10.3SemifinalSYNREY RDFZ454♥♦2=+0
+9.7Final🇯🇵 JAPAN36♠♠7+1-13
+9.3Final🇯🇵 JAPAN416NT♠J=+0
+9.1QuarterfinalNORTON454♥♠3-1+11
+8.3Final🇯🇵 JAPAN54♥♣K-2+8
+8.0SemifinalSYNREY RDFZ394♦♥A-1+9
+8.0Final🇯🇵 JAPAN143NT♠4=+7
+7.7QuarterfinalNORTON102♠x♥A-1+2
+7.7SemifinalSYNREY RDFZ353NT♠4+2+11
+6.7QuarterfinalNORTON74♥♦3+1+1
+6.1QuarterfinalNORTON546♥♠3+1-13
+6.0QuarterfinalNORTON362♣x♣A-1+8
+6.0SemifinalSYNREY RDFZ443NT♦A-2+11
+6.0Final🇯🇵 JAPAN432NT♣J-1+6
+5.6QuarterfinalNORTON41NT♠9-3+4
+5.3SemifinalSYNREY RDFZ423NT♣6-1+10
+5.3Final🇯🇵 JAPAN402NT♠9=+6
+5.0Final🇯🇵 JAPAN332♥♣Q-2+7
+4.7QuarterfinalNORTON504♥♣A=+0
+4.7Final🇯🇵 JAPAN476♦x♦K-3+0
+4.3QuarterfinalNORTON345♦x♠10-1+8
+4.3SemifinalSYNREY RDFZ474♦♥3=+1
+4.3Final🇯🇵 JAPAN133♣♠K+1+0
+4.0QuarterfinalNORTON314♥♣10=+0
+4.0SemifinalSYNREY RDFZ124♠♣K+1+1
+4.0SemifinalSYNREY RDFZ503♠♣Q+3+13
+4.0SemifinalSYNREY RDFZ565♦x♦Q-3+4
+4.0Final🇯🇵 JAPAN44♥♦6=+3
+3.7SemifinalSYNREY RDFZ345♦x♦8=+10
+3.7Final🇯🇵 JAPAN495♥♣10+1+1
+3.4QuarterfinalNORTON23NT♠5=+0
+3.3Final🇯🇵 JAPAN503♣♣J-1-1
+3.1QuarterfinalNORTON353NT♠4=+0
+3.0SemifinalSYNREY RDFZ512NT♣10-1-5
+3.0Final🇯🇵 JAPAN362NT♠K-1+2
+2.7QuarterfinalNORTON64♥♦6=+0
+2.7Final🇯🇵 JAPAN371NT♥2+2+1
+2.3SemifinalSYNREY RDFZ524♣♠Q-1+4
+2.0QuarterfinalNORTON334♠♠6+1+0
+2.0SemifinalSYNREY RDFZ293NT♠6-1+4
+2.0SemifinalSYNREY RDFZ494♥♣A=-1
+1.7SemifinalSYNREY RDFZ33♥♥5-1-2
+1.7SemifinalSYNREY RDFZ103♣♦K=-1
+1.7Final🇯🇵 JAPAN316♠x♦A-3+0
+1.7Final🇯🇵 JAPAN542♠♣10-1+6
+1.4QuarterfinalNORTON471NT♠5=+0
+1.1QuarterfinalNORTON14NT♠10=-1
+1.1QuarterfinalNORTON133NT♦6-2-3
+1.1QuarterfinalNORTON325♦♦2=-1
+1.1QuarterfinalNORTON511NT♠4+1-10
+1.0QuarterfinalNORTON52♠♥4-2-1
+1.0SemifinalSYNREY RDFZ413NT♥6+1+0
+1.0Final🇯🇵 JAPAN124♠♥J=+1
+1.0Final🇯🇵 JAPAN354♠♦6+1+0
+1.0Final🇯🇵 JAPAN443NT♠2+2+10
+0.9QuarterfinalNORTON112♠♦A-1+8
+0.7QuarterfinalNORTON392NT♥J=+6
+0.7Final🇯🇵 JAPAN25♣♥7-1+6
+0.7Final🇯🇵 JAPAN63NT♠9+3+1
+0.7Final🇯🇵 JAPAN424♥♦J+2-11
+0.7Final🇯🇵 JAPAN532♠♣8+2-10
+0.3SemifinalSYNREY RDFZ363NT♦10=+0
+0.3SemifinalSYNREY RDFZ434♥♥2=-1
+0.3SemifinalSYNREY RDFZ484♠♥2+1+0
+0.3Final🇯🇵 JAPAN465♦♥10=+2
+0.0QuarterfinalNORTON384♥♦A=+3
+0.0QuarterfinalNORTON404♥♣7+1+0
-0.0SemifinalSYNREY RDFZ54♠♣7+1+1
-0.0SemifinalSYNREY RDFZ401NT♦4+1+0
-0.0Final🇯🇵 JAPAN72♦♦Q=-5
-0.0Final🇯🇵 JAPAN304♥♣6+1+0
-0.0Final🇯🇵 JAPAN341♥♠3-1-1
-0.0Final🇯🇵 JAPAN514♥♠J+1+13
-0.1QuarterfinalNORTON32♦♦4-1+1
-0.3SemifinalSYNREY RDFZ43NT♣3+2+0
-0.3SemifinalSYNREY RDFZ96NT♣7+1+11
-0.3SemifinalSYNREY RDFZ333♥♠K=+6
-0.3Final🇯🇵 JAPAN523NT♥4+2+0
-0.4QuarterfinalNORTON554♥♠J=+1
-0.7QuarterfinalNORTON91NT♥4+1-6
-0.7SemifinalSYNREY RDFZ535♦x♦6-2-5
-1.0QuarterfinalNORTON433♠♣A-1-2
-1.0SemifinalSYNREY RDFZ325♦♠A-1+1
-1.1QuarterfinalNORTON291NT♥4-2+1
-1.1QuarterfinalNORTON414♠♥A-1-1
-1.3SemifinalSYNREY RDFZ74♠♥2=-1
-1.3SemifinalSYNREY RDFZ553♠♥2-2-5
-1.3Final🇯🇵 JAPAN83♦♣Q+3-13
-1.7SemifinalSYNREY RDFZ62♥♦6-2+0
-1.7SemifinalSYNREY RDFZ142♠x♠5-2+4
-1.9QuarterfinalNORTON444♥♠5+1-11
-2.0Final🇯🇵 JAPAN393NT♠3=-7
-2.3SemifinalSYNREY RDFZ112♦♥2+1-5
-2.4QuarterfinalNORTON493NT♥4+1-1
-2.7QuarterfinalNORTON524♥♦A=-8
-2.7SemifinalSYNREY RDFZ13♠♣A-1-4
-2.7Final🇯🇵 JAPAN552♠♦3+2+6
-3.0Final🇯🇵 JAPAN485♦♠K-1+3
-3.3SemifinalSYNREY RDFZ133♥♠7=-12
-3.3SemifinalSYNREY RDFZ384♥♦2+3+17
-3.4QuarterfinalNORTON122♦♣8+2-1
-3.7Final🇯🇵 JAPAN456♥♠2=+0
-4.0QuarterfinalNORTON84♠♦4+1-1
-4.0Final🇯🇵 JAPAN15♦x♥A-3-8
-4.0Final🇯🇵 JAPAN383♠♣A-3-5
-4.3Final🇯🇵 JAPAN294♥x♠2-2-5
-4.6QuarterfinalNORTON534♠x♠9=-4
-5.0SemifinalSYNREY RDFZ85♥x♥2-2-5
-5.3SemifinalSYNREY RDFZ312♥♥2=-6
-5.9QuarterfinalNORTON143NT♠A-3-7
-6.1QuarterfinalNORTON373NT♥Q+2+0
-6.4QuarterfinalNORTON486♥♣A-2-13
-7.3SemifinalSYNREY RDFZ303NT♥5-2-6
-9.1QuarterfinalNORTON566♠♦4-1-13
-10.3QuarterfinalNORTON304♠♦5-1-12
-10.4QuarterfinalNORTON423NT♠2=-7
-11.0Final🇯🇵 JAPAN116♥♦Q-1-14
-15.7QuarterfinalNORTON466♥♦A-1-20