🇨🇳 NIU Yuanzhe · CHINA1

27rank
+84.7Butler · 140 bds
+0.60per board
±5.5swing
+0.26vs par /bd · #33/75
+0.75adjusted /bd
Butler per round: 2.5 24 13.7 -7.1 43 -12.9 16.3 -31.8 54.8 -17.8by round

vs par split: bidding -0.20 · play +0.46

Strength of schedule: opponents averaged +0.15/bd (a tough draw) → opponent-adjusted +0.75/bd

Card play — on target: opening leads 69.6% #66 of 75 · declarer play 75.6% #27 of 75 · defence 96.3% #1 of 75

Card play by contract type — on target
vs NTvs a suit
Opening leads66.7% (3)70.0% (20)
Declarer play57.1% (14)83.9% (31)
Defence100.0% (11)95.3% (43)

Opening leads by suit led: ♠ 80.0% (5) · ♥ 83.3% (6) · ♦ 66.7% (3) · ♣ 55.6% (9)

vs par by strain: NT -0.11 (37) · a suit +0.39 (103)

vs par by level: part-score +0.88 (40) · game +0.89 (85) · slam -5.00 (15)

By role: declaring +1.41/bd (-1.16 vs par · 86) · defending -0.68/bd (+2.52 vs par · 54)

By vulnerability: vulnerable +0.80/bd (+0.10 vs par · 70) · not vulnerable +0.41/bd (+0.41 vs par · 70)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1B.JiangR.Wang – C.DengOpen14+2.5+0.18+3.43
Round 2B.JiangA.Lombardi – M.LombardiClosed14+24.0+1.71+2.36
Round 3B.JiangT.Loonstein – A.ZeitakClosed14+13.7+0.98+2.64
Round 5B.JiangM.Hu – A.ZhouClosed14-7.1-0.51-3.64
Round 6B.JiangZ.Otradovcova – T.FridrichClosed14+43.0+3.07+2.79
Round 7B.JiangM.Fragola – C.TeilOpen14-12.9-0.92-1.64
Round 9B.JiangW.Berner – H.SandblomOpen14+16.3+1.16-1.50
Round 10B.JiangH.Rose – M.JonesOpen14-31.8-2.27-2.00
Round 11B.JiangD.Fikriaza – M.AlhanifOpen14+54.8+3.91+1.57
Round 13B.JiangM.Kedzierski – M.SluszniakClosed14-17.8-1.27-1.43

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
+13.6Round 2🇮🇹 ITALY264♠♥8=+13
+12.8Round 2🇮🇹 ITALY257♠♦K=+0
+12.5Round 1🇨🇳 CHINA224♠x♣A-5+13
+12.1Round 11🇮🇩 INDONESIA62♥x♣K=+12
+11.7Round 3🇮🇱 ISRAEL54♠x♣7-3+12
+11.6Round 6🇨🇿 CZECH REPUBLIC105♠♥K+1+5
+10.6Round 11🇮🇩 INDONESIA24♥♦K=+3
+9.3Round 1🇨🇳 CHINA2134♥♥J=+10
+8.9Round 11🇮🇩 INDONESIA136♥♣A+1+1
+8.8Round 11🇮🇩 INDONESIA124♥♠3+1+4
+8.7Round 9🇸🇪 SWEDEN234♥x♠5-2+8
+8.5Round 3🇮🇱 ISRAEL73♥♣A+1+9
+8.4Round 6🇨🇿 CZECH REPUBLIC23NT♠6-2+11
+7.8Round 3🇮🇱 ISRAEL113NT♥8=+6
+7.7Round 7🇫🇷 FRANCE287NT♥7=+0
+7.4Round 5🇺🇸 USA244♠x♥K-3+8
+7.0Round 11🇮🇩 INDONESIA114♥♠2=+8
+6.6Round 1🇨🇳 CHINA214♥♠2+1+2
+6.5Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND153NT♥3+2+11
+6.2Round 2🇮🇹 ITALY224♠x♦J-1+8
+6.2Round 5🇺🇸 USA284♥♦2-1+10
+6.0Round 5🇺🇸 USA186♦♥2=+0
+6.0Round 7🇫🇷 FRANCE226♠♥2+1-11
+5.8Round 9🇸🇪 SWEDEN151NT♦5=+6
+5.7Round 6🇨🇿 CZECH REPUBLIC134♠♥K=+0
+5.6Round 9🇸🇪 SWEDEN203♠♣J-2+3
+5.1Round 2🇮🇹 ITALY203♦♥8-1+5
+4.7Round 6🇨🇿 CZECH REPUBLIC71NTx♣A-2+8
+4.6Round 6🇨🇿 CZECH REPUBLIC144♥♦A-3+7
+4.5Round 11🇮🇩 INDONESIA44♥♣3-2+7
+4.1Round 11🇮🇩 INDONESIA52♠♣Q+2+6
+4.1Round 13🇵🇱 POLAND24♥♣A-2+9
+4.0Round 9🇸🇪 SWEDEN222♦x♠A-3+4
+4.0Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND256NT♠5=-11
+3.9Round 6🇨🇿 CZECH REPUBLIC93♠♣J+1+8
+3.8Round 7🇫🇷 FRANCE173NT♥2=+3
+3.7Round 1🇨🇳 CHINA2123NT♠5=+10
+3.5Round 3🇮🇱 ISRAEL144♠♥J+1+0
+3.5Round 6🇨🇿 CZECH REPUBLIC111NT♦7+1+6
+3.3Round 3🇮🇱 ISRAEL131NT♣J=+6
+3.1Round 9🇸🇪 SWEDEN164♠♥Q=+0
+3.1Round 9🇸🇪 SWEDEN245♣♠2=-2
+3.0Round 3🇮🇱 ISRAEL34♥♣4=+0
+3.0Round 5🇺🇸 USA213NT♠5+1+0
+3.0Round 13🇵🇱 POLAND93NT♦6-2+6
+2.6Round 13🇵🇱 POLAND33NT♠J-1+5
+2.5Round 6🇨🇿 CZECH REPUBLIC85♣♦2=+0
+2.4Round 1🇨🇳 CHINA294♠♣3+2+1
+2.4Round 6🇨🇿 CZECH REPUBLIC13NT♣Q=-1
+2.4Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND274♥♦J+2+1
+2.3Round 1🇨🇳 CHINA2112♥♦6+1+0
+2.2Round 3🇮🇱 ISRAEL123NT♠9=+7
+2.2Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND212♥♦3+2+2
+2.0Round 2🇮🇹 ITALY194♠♣5=+0
+2.0Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND263NT♣A+2+1
+1.9Round 13🇵🇱 POLAND144♥♣A+1+0
+1.8Round 5🇺🇸 USA173NT♠3=-11
+1.8Round 6🇨🇿 CZECH REPUBLIC53NT♠5+1+0
+1.8Round 7🇫🇷 FRANCE255♦x♣8-1+7
+1.5Round 7🇫🇷 FRANCE272NT♣K=-1
+1.5Round 11🇮🇩 INDONESIA101NT♥6+2+0
+1.3Round 1🇨🇳 CHINA264♠♦A-1+12
+1.2Round 2🇮🇹 ITALY212♠♥3=+0
+1.1Round 2🇮🇹 ITALY273NT♦2=+2
+1.1Round 9🇸🇪 SWEDEN216♠♥3+1-13
+0.9Round 2🇮🇹 ITALY284♥♠7=+11
+0.9Round 6🇨🇿 CZECH REPUBLIC124♠♥4+2+1
+0.9Round 9🇸🇪 SWEDEN184♠♥2+1-13
+0.8Round 2🇮🇹 ITALY174♣♥9+1+13
+0.8Round 7🇫🇷 FRANCE162♠♦9=+0
+0.7Round 13🇵🇱 POLAND54♥♠6=-1
+0.6Round 7🇫🇷 FRANCE204♠♥4+2+1
+0.6Round 11🇮🇩 INDONESIA143♥♦J-1+5
+0.5Round 11🇮🇩 INDONESIA33NT♥4+2+0
+0.4Round 2🇮🇹 ITALY242♥♠2-1+3
+0.0Round 2🇮🇹 ITALY154♠♣J=+1
+0.0Round 6🇨🇿 CZECH REPUBLIC65♠♦3=+0
-0.0Round 13🇵🇱 POLAND134♠♥9+1-13
-0.1Round 13🇵🇱 POLAND13♠♠9+1-6
-0.2Round 11🇮🇩 INDONESIA14♠♦A-1-4
-0.2Round 11🇮🇩 INDONESIA92♠♥A+1-6
-0.3Round 13🇵🇱 POLAND84♥♠A+1+0
-0.4Round 5🇺🇸 USA202♥♠J-2-9
-0.4Round 13🇵🇱 POLAND114♥♣9+2+11
-0.6Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND284♥♠3=+0
-0.8Round 1🇨🇳 CHINA2146♦♣3-2+5
-0.8Round 11🇮🇩 INDONESIA75♥♣2+1-13
-0.8Round 13🇵🇱 POLAND123♥♦A-3-4
-0.9Round 3🇮🇱 ISRAEL93♣♠10-1+2
-1.0Round 3🇮🇱 ISRAEL63♦♣5+1-1
-1.2Round 5🇺🇸 USA163NT♠2=-11
-1.2Round 5🇺🇸 USA233♠♣K-1-5
-1.2Round 9🇸🇪 SWEDEN283NT♦5=+1
-1.4Round 6🇨🇿 CZECH REPUBLIC32♥♠6=+0
-1.5Round 5🇺🇸 USA274♠♥6=-3
-1.6Round 3🇮🇱 ISRAEL22♥♦4-1+1
-1.6Round 9🇸🇪 SWEDEN173♦♠9-2+0
-1.9Round 5🇺🇸 USA254♠♠4-1-5
-1.9Round 13🇵🇱 POLAND67♦♥5-2-13
-2.0Round 3🇮🇱 ISRAEL13NT♠10+2+10
-2.1Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND184♠♥Q-1-6
-2.2Round 9🇸🇪 SWEDEN273♥♦Q-1+2
-2.4Round 1🇨🇳 CHINA2103NT♥7-2-2
-2.4Round 7🇫🇷 FRANCE214♠♠3+1+8
-2.5Round 2🇮🇹 ITALY164♥♣2=-3
-2.5Round 7🇫🇷 FRANCE193NT♦A-1-4
-2.6Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND223♠♣8-1+6
-2.6Round 11🇮🇩 INDONESIA82♣♠A-3-1
-2.8Round 2🇮🇹 ITALY184♠♥A=+0
-2.8Round 7🇫🇷 FRANCE154♥♠4=+1
-2.8Round 9🇸🇪 SWEDEN254♠♣3-1-5
-3.2Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND244♥♣5-1-4
-3.5Round 9🇸🇪 SWEDEN194♠♣A+1+0
-3.8Round 1🇨🇳 CHINA233NT♣Q=+1
-4.1Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND233♠♣5-1+9
-4.5Round 5🇺🇸 USA196NT♣10+1-1
-4.6Round 3🇮🇱 ISRAEL102♠♦4-1-5
-4.7Round 9🇸🇪 SWEDEN263NT♦K-1-12
-5.0Round 5🇺🇸 USA154♥♥A=+0
-5.1Round 7🇫🇷 FRANCE184♥♠3=-7
-5.3Round 5🇺🇸 USA264♠♦A-1-12
-5.6Round 6🇨🇿 CZECH REPUBLIC43NT♠8-4-6
-5.7Round 1🇨🇳 CHINA285♣x♦A-2+0
-6.0Round 7🇫🇷 FRANCE233NT♣Q=-10
-6.4Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND173♠x♥A-1-5
-6.4Round 13🇵🇱 POLAND104♠♦K=-1
-7.1Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND163♥♦K-1-5
-7.2Round 3🇮🇱 ISRAEL83NT♦4=+0
-7.4Round 1🇨🇳 CHINA252♠x♣A=-8
-7.5Round 7🇫🇷 FRANCE263♥♠A+1-10
-7.6Round 1🇨🇳 CHINA246♦♥K+1+13
-7.8Round 13🇵🇱 POLAND44♠♣6=+0
-7.9Round 1🇨🇳 CHINA274♠♥A=-9
-8.2Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND203NT♠2-1-12
-8.8Round 7🇫🇷 FRANCE247♠♥4=+0
-9.0Round 3🇮🇱 ISRAEL43NT♠4-3-10
-10.5Round 5🇺🇸 USA226NT♥8-3-12
-12.4Round 13🇵🇱 POLAND76♦♥A=-13
-14.6Round 10🏴󠁧󠁢󠁥󠁮󠁧󠁿 ENGLAND193♠x♥A=-15
-14.8Round 2🇮🇹 ITALY237♥♦J-1-20