🇸🇬 ONG Yisheng Kelvin · SINGAPORE

60rank
-75.1Butler · 160 bds
-0.47per board
±4.8swing
-1.03vs par /bd · #80/84
-0.32adjusted /bd
Butler per round: 11.1 -7.9 -31.4 -28.1 -8.5 -9 6.8 -3.2 -10.4 5.5by round

vs par split: bidding -0.99 · play +0.01

Strength of schedule: opponents averaged +0.15/bd (a tough draw) → opponent-adjusted -0.32/bd

Card play — on target: opening leads 72.3% #75 of 84 · declarer play 68.1% #61 of 84 · defence 76.5% #72 of 84

Card play by contract type — on target
vs NTvs a suit
Opening leads62.5% (8)74.4% (39)
Declarer play75.0% (16)64.5% (31)
Defence64.7% (17)79.7% (64)

Opening leads by suit led: ♠ 80.0% (5) · ♥ 61.5% (13) · ♦ 85.7% (14) · ♣ 66.7% (15)

vs par by strain: NT -1.71 (48) · a suit -0.74 (112)

vs par by level: part-score -1.60 (60) · game -0.90 (89) · slam +1.00 (11)

By role: declaring +0.17/bd (-2.82 vs par · 78) · defending -1.08/bd (+0.67 vs par · 82)

By vulnerability: vulnerable -0.98/bd (-1.94 vs par · 80) · not vulnerable +0.04/bd (-0.12 vs par · 80)

By round↑ top

RoundPartnerOpponentsRoomBdsButlerAvgvs par
Round 1E.LimJ.Bussell – M.WayClosed16+11.1+0.69-1.00
Round 2E.LimD.Miles – D.KorbelOpen16-7.9-0.49-1.88
Round 4E.LimC.Pellegrini – H.CamberosClosed16-31.4-1.96-2.00
Round 7E.LimJ.Tomcani – M.KemenovaOpen16-28.1-1.76-1.38
Round 8Y.ThamG.Duboin – A.SementaClosed16-8.5-0.53-1.44
Round 9E.LimF.Nystrom – J.UpmarkClosed16-9.0-0.56-3.44
Round 10E.LimN.Eber – C.BosenbergOpen16+6.8+0.42+0.12
Round 11E.LimE.Sophonpanich – S.BaisamutOpen16-3.2-0.20+0.44
Round 13E.LimO.Ghigheci – I.RotaruClosed16-10.4-0.65+0.88
Round 15E.LimS.Sbili – A.BelkouchClosed16+5.5+0.34-0.62

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 1🇧🇲 BERMUDA45♠x♥K-3+12
+11.8Round 2🇨🇦 CANADA236♠♥2=+0
+10.4Round 11🇹🇭 THAILAND16♣x♠K-1+11
+10.1Round 15🇲🇦 MOROCCO43NT♠Q+2-12
+9.5Round 15🇲🇦 MOROCCO55♥♠7-1+11
+9.2Round 10🇿🇦 SOUTH AFRICA194♠x♥A=+12
+8.5Round 1🇧🇲 BERMUDA15♣♥3-1+14
+7.8Round 7🇸🇰 SLOVAKIA132♥♦Q-3+9
+7.5Round 10🇿🇦 SOUTH AFRICA183NT♦10=+3
+7.1Round 1🇧🇲 BERMUDA52♦♠4+2-7
+6.9Round 10🇿🇦 SOUTH AFRICA304♥♥A-2+11
+6.8Round 4🇦🇷 ARGENTINA174♠♣A=+0
+6.6Round 4🇦🇷 ARGENTINA243NT♠2+1+1
+6.5Round 9🇸🇪 SWEDEN115♣♠7=-11
+5.7Round 15🇲🇦 MOROCCO143NT♥A=+0
+5.6Round 2🇨🇦 CANADA194♦♥A+1+10
+5.3Round 8🇮🇹 ITALY193NT=+0
+5.0Round 1🇧🇲 BERMUDA113NT♥7=+7
+4.7Round 8🇮🇹 ITALY304♠x♥3-2+0
+4.6Round 9🇸🇪 SWEDEN34♥♠9=+1
+4.5Round 11🇹🇭 THAILAND24♥♥A=+0
+3.9Round 10🇿🇦 SOUTH AFRICA224♠♣K-1+12
+3.9Round 15🇲🇦 MOROCCO14♠♦K=+7
+3.8Round 7🇸🇰 SLOVAKIA93♦♣J+1-7
+3.6Round 13🇷🇴 ROMANIA32♥♠A+2+7
+3.5Round 13🇷🇴 ROMANIA133♣♥Q=+11
+3.4Round 2🇨🇦 CANADA184♥♦5-1+5
+3.4Round 15🇲🇦 MOROCCO23♦♥A+2+6
+3.3Round 2🇨🇦 CANADA273NT♠2+2-8
+3.2Round 8🇮🇹 ITALY211NT=+0
+3.2Round 11🇹🇭 THAILAND162♠♣6+1+6
+3.2Round 13🇷🇴 ROMANIA154♠x♣A-1+0
+3.0Round 13🇷🇴 ROMANIA111NT♦7=+0
+2.9Round 4🇦🇷 ARGENTINA311♥♠K-1+6
+2.9Round 9🇸🇪 SWEDEN121♣♦3-1+5
+2.6Round 8🇮🇹 ITALY232♠♥8+2+1
+2.5Round 9🇸🇪 SWEDEN43♦♥6+1+0
+2.4Round 9🇸🇪 SWEDEN25♣♥8=-2
+2.3Round 15🇲🇦 MOROCCO163NT♥3-1+5
+2.2Round 7🇸🇰 SLOVAKIA103NT♣7+2+0
+2.1Round 13🇷🇴 ROMANIA146♦♦4=+12
+1.9Round 4🇦🇷 ARGENTINA213♠♥10=+0
+1.8Round 2🇨🇦 CANADA243♥x♦2-1+0
+1.8Round 10🇿🇦 SOUTH AFRICA263NT♦6=+10
+1.7Round 8🇮🇹 ITALY273NT♣J=+2
+1.6Round 13🇷🇴 ROMANIA13NT♥6-2+5
+1.5Round 2🇨🇦 CANADA223♥♣8-1+0
+1.5Round 2🇨🇦 CANADA253♦♣4-2-5
+1.5Round 10🇿🇦 SOUTH AFRICA243NT♠10+2+0
+1.5Round 13🇷🇴 ROMANIA24♠♠2+2+1
+1.4Round 2🇨🇦 CANADA214♦♣J-1-10
+1.4Round 8🇮🇹 ITALY314♠♣6=+0
+1.4Round 11🇹🇭 THAILAND151NT♥3-1+2
+1.4Round 13🇷🇴 ROMANIA122♣♠K+1-1
+1.2Round 9🇸🇪 SWEDEN132♠♠6=-1
+1.2Round 9🇸🇪 SWEDEN164♠♦2-3+2
+1.1Round 8🇮🇹 ITALY292♠♥A+2-10
+1.1Round 11🇹🇭 THAILAND82♠♣K+1+0
+1.0Round 1🇧🇲 BERMUDA142♣♥A+1+1
+1.0Round 4🇦🇷 ARGENTINA204♥♠K+1+0
+0.9Round 1🇧🇲 BERMUDA22♠♥5-1+2
+0.9Round 2🇨🇦 CANADA262♠♦2-1-1
+0.9Round 10🇿🇦 SOUTH AFRICA173NT♣Q+2+0
+0.8Round 1🇧🇲 BERMUDA124♠♦K+1+0
+0.8Round 7🇸🇰 SLOVAKIA14♥♣2+1-11
+0.8Round 11🇹🇭 THAILAND33NT♠10-1+5
+0.8Round 15🇲🇦 MOROCCO81NT♠J-2+0
+0.6Round 10🇿🇦 SOUTH AFRICA316♥♦8+1-13
+0.5Round 10🇿🇦 SOUTH AFRICA256♠♦A=+0
+0.5Round 11🇹🇭 THAILAND143♣♥3=+0
+0.5Round 15🇲🇦 MOROCCO93NT♣5+2+0
+0.3Round 8🇮🇹 ITALY184♠x♦A-1+0
+0.3Round 13🇷🇴 ROMANIA54♠♥4=-1
+0.3Round 15🇲🇦 MOROCCO65♦x♥8-3+4
+0.2Round 1🇧🇲 BERMUDA93NT♦6+3-13
+0.2Round 4🇦🇷 ARGENTINA181NT♦7=+0
+0.2Round 8🇮🇹 ITALY201NT=-1
+0.2Round 11🇹🇭 THAILAND103♦♣Q-1-1
-0.0Round 1🇧🇲 BERMUDA83NT♥4+1-1
+0.0Round 7🇸🇰 SLOVAKIA74♥♦A+1+0
-0.0Round 9🇸🇪 SWEDEN63NT♣7+1+0
-0.1Round 4🇦🇷 ARGENTINA234♥♣2=+0
-0.2Round 7🇸🇰 SLOVAKIA113NT♣7=-1
-0.2Round 10🇿🇦 SOUTH AFRICA323♥♣A=-7
-0.2Round 11🇹🇭 THAILAND94♠♣Q+2+11
-0.3Round 2🇨🇦 CANADA311♥x♠2-1-2
-0.3Round 8🇮🇹 ITALY261NT♣6+2-1
-0.4Round 11🇹🇭 THAILAND134♠♥2+1+0
-0.5Round 7🇸🇰 SLOVAKIA23NT♠K+1-1
-0.5Round 8🇮🇹 ITALY172♥♠J=-1
-0.5Round 10🇿🇦 SOUTH AFRICA213NT♥9=+2
-0.5Round 10🇿🇦 SOUTH AFRICA271NT♥3-1+8
-0.5Round 13🇷🇴 ROMANIA102♥♦A+1+0
-0.6Round 15🇲🇦 MOROCCO153♥♠8=+0
-0.8Round 11🇹🇭 THAILAND114♠♥10-1-5
-0.9Round 4🇦🇷 ARGENTINA323♠♥A-1-6
-1.1Round 1🇧🇲 BERMUDA133♠♣A-1-9
-1.1Round 2🇨🇦 CANADA293♥♣3=-10
-1.1Round 13🇷🇴 ROMANIA163NT♣4+2+0
-1.2Round 11🇹🇭 THAILAND74♥♥2+1+0
-1.2Round 15🇲🇦 MOROCCO104♥♠10=+0
-1.4Round 4🇦🇷 ARGENTINA195♣♥A-1-2
-1.5Round 7🇸🇰 SLOVAKIA62♣♦5+1+1
-1.5Round 7🇸🇰 SLOVAKIA153♥♣3-1+1
-1.5Round 9🇸🇪 SWEDEN13NT♥10-3-7
-1.8Round 4🇦🇷 ARGENTINA282♦♦9=-2
-1.8Round 13🇷🇴 ROMANIA43NT♦3=+11
-2.4Round 1🇧🇲 BERMUDA104♥♣3-3-5
-2.4Round 9🇸🇪 SWEDEN81NT♠J+1-6
-2.5Round 1🇧🇲 BERMUDA65♦♥A=+0
-2.5Round 9🇸🇪 SWEDEN54♠♣A+1-2
-2.7Round 1🇧🇲 BERMUDA152♥♦9=-5
-2.7Round 1🇧🇲 BERMUDA163♦-2-11
-2.7Round 11🇹🇭 THAILAND44♥♦4=+0
-2.9Round 9🇸🇪 SWEDEN153NT♣7-1-10
-3.0Round 4🇦🇷 ARGENTINA263NT♥4=-10
-3.1Round 7🇸🇰 SLOVAKIA144♥♣6-1-10
-3.2Round 4🇦🇷 ARGENTINA254♥♣2+2+11
-3.2Round 7🇸🇰 SLOVAKIA44♠♥Q=-3
-3.2Round 9🇸🇪 SWEDEN144♠♦10=+0
-3.4Round 1🇧🇲 BERMUDA36♣♠9=+11
-3.4Round 13🇷🇴 ROMANIA83♥♣K-2+0
-3.5Round 2🇨🇦 CANADA202♠♠5=+0
-3.7Round 15🇲🇦 MOROCCO134♠♥7+2-13
-3.9Round 7🇸🇰 SLOVAKIA164♠♥J+1+13
-3.9Round 15🇲🇦 MOROCCO122♠♣3+1+0
-4.0Round 9🇸🇪 SWEDEN101NT♦6-2-2
-4.2Round 8🇮🇹 ITALY222NT=-1
-4.5Round 8🇮🇹 ITALY323NT♠T+1+0
-4.6Round 2🇨🇦 CANADA174♥♣8=+1
-4.6Round 9🇸🇪 SWEDEN93NT♣Q+3-13
-4.8Round 7🇸🇰 SLOVAKIA86♥♥3=+11
-5.0Round 8🇮🇹 ITALY243NT♥J+1+0
-5.1Round 10🇿🇦 SOUTH AFRICA203♥♦A+1-8
-5.2Round 13🇷🇴 ROMANIA93NT♥4-2-11
-5.3Round 10🇿🇦 SOUTH AFRICA234♥♦4-1-11
-5.5Round 11🇹🇭 THAILAND124♥♥K-1-5
-5.6Round 2🇨🇦 CANADA305♦♠A-2-6
-5.6Round 7🇸🇰 SLOVAKIA35♣♠2=-3
-5.8Round 13🇷🇴 ROMANIA63NT♦10-3-7
-6.2Round 4🇦🇷 ARGENTINA303NT♥J+1+0
-6.4Round 8🇮🇹 ITALY286♦♦3+1-13
-6.8Round 15🇲🇦 MOROCCO74♠♠Q-1-12
-6.9Round 7🇸🇰 SLOVAKIA53NT♠2-2-8
-6.9Round 10🇿🇦 SOUTH AFRICA294♠♦A=-10
-7.1Round 11🇹🇭 THAILAND65♣♦A=-6
-7.4Round 11🇹🇭 THAILAND53♣♦9+1-11
-7.4Round 15🇲🇦 MOROCCO32♥♦2=-1
-7.4Round 15🇲🇦 MOROCCO116♥♠A=-5
-7.5Round 10🇿🇦 SOUTH AFRICA284♥♠5=-7
-8.1Round 8🇮🇹 ITALY255♣♥K+1+1
-9.2Round 9🇸🇪 SWEDEN74NT♦A-3-9
-9.8Round 1🇧🇲 BERMUDA72♠♦2=-12
-10.8Round 2🇨🇦 CANADA286♥♣8=+10
-11.0Round 4🇦🇷 ARGENTINA222NTx♠5-2-11
-11.3Round 4🇦🇷 ARGENTINA293NT♣6=-10
-11.5Round 7🇸🇰 SLOVAKIA121♥x♠6+1-13
-11.9Round 4🇦🇷 ARGENTINA273♠x♣8-4-9
-12.8Round 13🇷🇴 ROMANIA76♥♣A=-13
-13.2Round 2🇨🇦 CANADA324♥x♦4=-14