🇺🇸 CAI Yichen · USA1

63rank
-150.2Butler · 180 bds
-0.83per board
±4.8swing
-1.03vs par /bd · #60/66
-0.90adjusted /bd
Butler per round: -12 -13.5 18.3 -17.5 -22.7 -28.8 -1.4 -9.1 4.8 -25.2 4.8 -34.8 26.6 -9.7 -30by round

vs par split: bidding -0.71 · play -0.28

Strength of schedule: opponents averaged -0.06/bd (an easy draw) → opponent-adjusted -0.90/bd

Card play — on target: opening leads 78.3% #45 of 66 · declarer play 86.4% #5 of 66 · defence 73.5% #58 of 66

Bidding activity — not a pass: 40.6% #47 of 66 (209/515)

Card play by contract type — on target
vs NTvs a suit
Opening leads62.5% (16)86.7% (30)
Declarer play83.3% (12)87.5% (32)
Defence71.4% (28)74.3% (70)

Opening leads by suit led: ♠ 75.0% (16) · ♥ 75.0% (12) · ♦ 75.0% (12) · ♣ 100.0% (6)

vs par by strain: NT -0.15 (54) · a suit -1.36 (124)

vs par by level: part-score -1.19 (73) · game -1.46 (95) · slam +4.90 (10)

By role: declaring -0.40/bd (-2.81 vs par · 80) · defending -1.15/bd (+0.49 vs par · 98)

By vulnerability: vulnerable -0.67/bd (-0.80 vs par · 90) · not vulnerable -1.00/bd (-1.26 vs par · 90)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 2H.HsiehV.Dalpozzo – F.DalpozzoOpen12-12.0-1.00-3.00
Round 3H.HsiehL.De Wijs – S.De WijsClosed12-13.5-1.12-1.17
Round 4H.HsiehA.Kraikitrat – W.PhongphaOpen12+18.3+1.53-1.17
Round 6H.HsiehS.Bune – A.BuneOpen12-17.5-1.46-2.92
Round 7H.HsiehC.Zhang – Y.ShaoClosed12-22.7-1.89-2.08
Round 8H.HsiehC.Bouton – M.Kurek BeaulieuOpen12-28.8-2.40+0.42
Round 11H.HsiehL.Kearney – D.ColeyOpen12-1.4-0.12-0.75
Round 12H.HsiehD.Coley – L.KearneyOpen12-9.1-0.76-3.83
Round 13H.HsiehS.De Wijs – L.De WijsClosed12+4.8+0.40+0.00
Round 15H.HsiehC.Pedersen – L.JacobsenClosed12-25.2-2.10+0.25
Round 16H.HsiehC.Belloy – W.SchlumbergerOpen12+4.8+0.40+0.75
Round 17H.HsiehH.Lajos – V.SzucsClosed12-34.8-2.90-4.08
Round 18H.HsiehK.Sullivan – M.JohnstoneClosed12+26.6+2.22+2.50
Round 20H.HsiehR.Ma – C.GeClosed12-9.7-0.81-0.92
Round 21H.HsiehA.Kraikitrat – W.PhongphaOpen12-30.0-2.50+0.58

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
+13.4Round 2🇮🇹 ITALY166NT♦J+1+13
+10.9Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND136♥♦7-2+19
+10.4Round 16🇫🇷 FRANCE34♥♣T=+1
+10.4Round 18🇺🇸 USA2103NT♣3+1+10
+9.9Round 18🇺🇸 USA224♥♣T-1+13
+9.4Round 4🇹🇭 THAILAND226♠♥K-2+11
+8.5Round 7🇨🇳 CHINA194♠x♥A=+12
+8.3Round 4🇹🇭 THAILAND215♠♦K+1-9
+7.9Round 18🇺🇸 USA233♠♣4-1+10
+7.8Round 3🇳🇱 NETHERLANDS124♥♠K-1-1
+6.8Round 21🇹🇭 THAILAND193NT♦J-1+10
+6.7Round 7🇨🇳 CHINA164♥♠9+1+4
+6.6Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND194♥♦7-1+5
+6.5Round 20🇨🇳 CHINA113NT♠6=+0
+6.4Round 8🇫🇷 FRANCE24♦♣J-2+9
+5.8Round 4🇹🇭 THAILAND173NT♣8+2-11
+5.6Round 6🇩🇰 DENMARK23NT♣6-1+6
+5.6Round 13🇳🇱 NETHERLANDS135♣♠5+1+5
+5.5Round 2🇮🇹 ITALY224♠♦A+1+0
+5.5Round 4🇹🇭 THAILAND183♣♦A+1+0
+5.4Round 12🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND66♥♠K+1+1
+5.2Round 18🇺🇸 USA2114♠♠3=-11
+5.1Round 13🇳🇱 NETHERLANDS162♦♥A=+5
+5.0Round 16🇫🇷 FRANCE72NT♠5+4-6
+4.6Round 18🇺🇸 USA253NT♦Q-1+13
+4.5Round 6🇩🇰 DENMARK94♠♣K=+3
+4.2Round 13🇳🇱 NETHERLANDS184♠♥8-1+5
+4.1Round 12🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND113NT♥7+1+0
+3.9Round 2🇮🇹 ITALY235♥♥3+1-13
+3.9Round 20🇨🇳 CHINA53NT♠7+1+1
+3.7Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND201NT♠T-3+5
+3.3Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND213♠♣3-1-2
+3.3Round 16🇫🇷 FRANCE83NT♥Q-1+10
+3.0Round 13🇳🇱 NETHERLANDS244♥♦4=+0
+2.9Round 12🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND121NT♣3=-1
+2.7Round 8🇫🇷 FRANCE52♥♥3=+0
+2.7Round 17🇭🇺 HUNGARY213♠♣J-1+5
+2.6Round 15🇩🇰 DENMARK233♥♣A-2+3
+2.6Round 20🇨🇳 CHINA103♦♠7-1+0
+2.4Round 4🇹🇭 THAILAND194♣♥6=+7
+2.3Round 16🇫🇷 FRANCE93NT♠3-3+7
+2.2Round 4🇹🇭 THAILAND243♣♥Q+1+7
+2.1Round 21🇹🇭 THAILAND174♥♠8-1+10
+1.9Round 18🇺🇸 USA243NT♥3=+1
+1.7Round 7🇨🇳 CHINA215♣x♦2-2+2
+1.6Round 7🇨🇳 CHINA141NT♥3+2+1
+1.3Round 13🇳🇱 NETHERLANDS233NT♥4+2-1
+1.2Round 20🇨🇳 CHINA123NT♠7+1+0
+1.2Round 21🇹🇭 THAILAND226♥♦T=+0
+1.1Round 3🇳🇱 NETHERLANDS103NT♥8-1+12
+1.1Round 12🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND101NT♥3+2-1
+1.0Round 3🇳🇱 NETHERLANDS11NT♦3+1+0
+0.9Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND144♥♣J+1-11
+0.8Round 16🇫🇷 FRANCE24♥♠3+1+0
+0.8Round 17🇭🇺 HUNGARY153NT♥2+3-9
+0.7Round 12🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND92♥♣9+1+0
+0.7Round 13🇳🇱 NETHERLANDS213♠♦5=-4
+0.7Round 21🇹🇭 THAILAND155♣x♦2-2+8
+0.6Round 6🇩🇰 DENMARK114♥♣Q+2-11
+0.6Round 7🇨🇳 CHINA225♦♠A=-1
+0.6Round 12🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND14♠♥A-1-6
+0.5Round 2🇮🇹 ITALY145♣♠2-2-5
+0.5Round 15🇩🇰 DENMARK172♥♦6=+8
+0.5Round 20🇨🇳 CHINA13NT♠3=+0
+0.4Round 3🇳🇱 NETHERLANDS32♠♦T-2-1
+0.4Round 20🇨🇳 CHINA22♠♦9+2+6
+0.3Round 17🇭🇺 HUNGARY144♥♠K+1+0
+0.1Round 18🇺🇸 USA262♠♦T=+0
+0.1Round 21🇹🇭 THAILAND213NT♠K+2+12
-0.0Round 6🇩🇰 DENMARK63NT♣J-1-9
+0.0Round 17🇭🇺 HUNGARY134♠♣6+2-13
-0.1Round 3🇳🇱 NETHERLANDS114♣♦A+2-12
-0.1Round 12🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND23♦♠K=-1
-0.2Round 16🇫🇷 FRANCE102♠♥K-1+1
-0.2Round 17🇭🇺 HUNGARY192♦♥K+1+0
-0.2Round 20🇨🇳 CHINA72♥♣3=+6
-0.3Round 13🇳🇱 NETHERLANDS144♠♣A-1+8
-0.5Round 2🇮🇹 ITALY242♠♣A=+0
-0.5Round 7🇨🇳 CHINA134♥♣7-1-6
-0.5Round 15🇩🇰 DENMARK134♠♥4=-1
-0.6Round 3🇳🇱 NETHERLANDS91NT♠9+1+1
-0.6Round 17🇭🇺 HUNGARY242NT♣2=+1
-0.7Round 4🇹🇭 THAILAND132NT♥K+1+0
-0.7Round 12🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND84♥♣A+1+0
-0.7Round 16🇫🇷 FRANCE124♠♣7=+0
-0.8Round 15🇩🇰 DENMARK226♥♣T+1+6
-0.9Round 8🇫🇷 FRANCE85♦x♠2-3+10
-0.9Round 18🇺🇸 USA282♠♣9+1-6
-1.0Round 6🇩🇰 DENMARK73♠♥T=+0
-1.0Round 6🇩🇰 DENMARK122♥♦7=+0
-1.0Round 16🇫🇷 FRANCE53NT♠4+2+0
-1.2Round 4🇹🇭 THAILAND155♦♠Q=-7
-1.2Round 13🇳🇱 NETHERLANDS224♥♠9-3+9
-1.3Round 8🇫🇷 FRANCE72♠♣A=+1
-1.4Round 4🇹🇭 THAILAND143♠♣A-2-1
-1.4Round 6🇩🇰 DENMARK13NT♠7+2+0
-1.4Round 6🇩🇰 DENMARK43♥♦T=-7
-1.4Round 8🇫🇷 FRANCE122NT♠4-2-5
-1.4Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND244♥♥6-1-4
-1.5Round 7🇨🇳 CHINA172♥♠4+3+6
-1.5Round 13🇳🇱 NETHERLANDS192♠♥9-1-1
-1.5Round 15🇩🇰 DENMARK244♥♣K-1-4
-1.5Round 20🇨🇳 CHINA41NT♦5+1-1
-1.6Round 15🇩🇰 DENMARK183NT♠K=+0
-1.7Round 4🇹🇭 THAILAND204♠♦3+1+0
-1.7Round 13🇳🇱 NETHERLANDS173♦♠9+1-1
-1.8Round 18🇺🇸 USA212♠♥7+2-6
-1.9Round 15🇩🇰 DENMARK193NT♣5+2+12
-2.0Round 3🇳🇱 NETHERLANDS63♥♣K=+0
-2.0Round 15🇩🇰 DENMARK163♦♠K-1+2
-2.1Round 3🇳🇱 NETHERLANDS7Pass-4
-2.1Round 8🇫🇷 FRANCE92NT♥5-1-6
-2.2Round 12🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND44♠♥J=+0
-2.2Round 20🇨🇳 CHINA33♥♦Q+1-2
-2.4Round 8🇫🇷 FRANCE44♥♦8+2-5
-2.4Round 18🇺🇸 USA274♠♦3-2+7
-2.5Round 2🇮🇹 ITALY152♥♦A-1-1
-2.5Round 17🇭🇺 HUNGARY163♠♣9+1-1
-2.5Round 20🇨🇳 CHINA63NT♦Q+2+0
-2.6Round 2🇮🇹 ITALY133NT♠6+2-2
-2.6Round 7🇨🇳 CHINA182NT♦6+3-6
-2.6Round 16🇫🇷 FRANCE42♠♦K-3+7
-2.7Round 15🇩🇰 DENMARK214♥♣3-1-5
-2.7Round 21🇹🇭 THAILAND132NT♥6-1+0
-2.7Round 21🇹🇭 THAILAND236♥♠2=+0
-2.8Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND162NT♦3+1+1
-3.1Round 3🇳🇱 NETHERLANDS83NT♥2-1-5
-3.1Round 8🇫🇷 FRANCE114♠♥6+2-2
-3.4Round 2🇮🇹 ITALY174♥♠8+1+0
-3.4Round 2🇮🇹 ITALY184♠x♦3-1-6
-3.4Round 16🇫🇷 FRANCE14♥♣3-2-6
-3.4Round 17🇭🇺 HUNGARY183NT♠Q+2-2
-3.4Round 21🇹🇭 THAILAND184♠♣K=+0
-3.5Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND153♠♥8=-7
-3.5Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND183NT♥2+1+0
-3.5Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND23Pass-4
-3.5Round 16🇫🇷 FRANCE112NT♥5-2-5
-3.7Round 2🇮🇹 ITALY216NT♠5=-1
-3.8Round 6🇩🇰 DENMARK83♦♠3-2-6
-3.8Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND174♠♣5=+0
-3.9Round 21🇹🇭 THAILAND161♠♣J+2-4
-4.0Round 3🇳🇱 NETHERLANDS24♥♠8+1+0
-4.1Round 18🇺🇸 USA2122♥♠A=-6
-4.2Round 8🇫🇷 FRANCE13♥♠A=-1
-4.2Round 18🇺🇸 USA293♠♦9-1+5
-4.4Round 13🇳🇱 NETHERLANDS153♠♦J=-12
-4.5Round 4🇹🇭 THAILAND233NT♠6=-3
-4.5Round 12🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND74♠♥T-2-13
-4.5Round 15🇩🇰 DENMARK143♦♠A-1-9
-4.5Round 15🇩🇰 DENMARK152NT♠K+2-9
-4.7Round 8🇫🇷 FRANCE32NT♥8-2-3
-4.7Round 17🇭🇺 HUNGARY173NT♥3=+0
-4.9Round 12🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND55♥♥6-1-10
-5.2Round 7🇨🇳 CHINA202NT♥Q-2-8
-5.3Round 3🇳🇱 NETHERLANDS54♥x♠A-2-4
-5.4Round 8🇫🇷 FRANCE102♦♣4-3+7
-5.5Round 2🇮🇹 ITALY192NT♠7+4-8
-5.5Round 6🇩🇰 DENMARK31NT♠3-1-5
-5.6Round 16🇫🇷 FRANCE64♥♣9+1+0
-5.8Round 4🇹🇭 THAILAND164♠x♣4-1-8
-6.0Round 6🇩🇰 DENMARK103♣♠A-2-2
-6.0Round 13🇳🇱 NETHERLANDS203NT♠J+2-13
-6.1Round 17🇭🇺 HUNGARY234♠♥2-2-8
-6.6Round 3🇳🇱 NETHERLANDS44♠♣7=+0
-6.7Round 21🇹🇭 THAILAND244♠♣K=-7
-7.6Round 20🇨🇳 CHINA84♠♥6-1-10
-8.1Round 6🇩🇰 DENMARK53NT♦3+1-4
-8.3Round 11🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND223♠♦K=-11
-8.3Round 15🇩🇰 DENMARK206♠♣A=+0
-8.5Round 21🇹🇭 THAILAND203♠♦8=-8
-9.3Round 7🇨🇳 CHINA155♠♠T-1-10
-9.7Round 17🇭🇺 HUNGARY204♥♥3+1-11
-10.0Round 7🇨🇳 CHINA234♥x♦A=-5
-10.8Round 20🇨🇳 CHINA94♠♥A=-11
-11.4Round 17🇭🇺 HUNGARY224♥♦2+1-11
-11.5Round 12🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND33♥x♠4-2-15
-12.4Round 8🇫🇷 FRANCE67♠♥7=+0
-12.7Round 7🇨🇳 CHINA244♥x♠Q-4-14
-13.0Round 21🇹🇭 THAILAND145♥x♦A-4-14
-13.7Round 2🇮🇹 ITALY204♠x♦6+1-13