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Oct 2022

Ladder for 1 Oct 2022 to 31 Oct 2022

Online statistics for 1 Oct 2022 to 31 Oct 2022
We have calculated a ladder for online play on RealBridge sessions hosted by the Auckland Bridge Club for the period 1 Oct 2022 to 31 Oct 2022. You needed to have played a certain number of times to be listed in the ladder. There are more details at the end about how the calculation is performed, and what is included. We have added some additional tables since last month. This is an experimental feature. It will continue to evolve. Please let us know (realbridge@akbc.co.nz) if you spot any problems or have any suggestions.
 
Open Ladder
Rank Name Number Club Played Average1
1 A♠ John Buckleton 25761 Auckland 15 60.29%
2 A♥ Ian Clayton 4161 Hamilton 7 59.94%
2 A♥ Cynthia Clayton 13263 Hamilton 7 59.94%
4 A♣ John Driscoll 33587 Taupo 10 58.82%
4 A♣ Rona Driscoll 19976 Taupo 10 58.82%
6 K♥ Mark Robertson 35545 Auckland 6 58.17%
7 K♦ Cheryl Winsor 10588 Howick 7 56.84%
8 K♣ Sita Monaghan 54890 Nelson 6 56.79%
9 Q♠ Pamela Dravitzki 42568 Richmond 11 56.34%
10 Q♥ Russell Watt 17820 Auckland 16 55.96%
11 Q♦ Marie Ewbank 6081 Auckland 10 55.90%
12 Q♣ Sylvester Riddell 14427 Auckland 6 55.89%
13 J♠ Hilda Burgess 24313 Victoria 7 55.54%
14 J♥ Leslie Watt 56607 Auckland 15 55.07%
15 J♦ Douglas Russell 15492 Auckland 7 54.98%
16 J♣ Trish Murphy 52605 Hastings 10 54.81%
17 Nola Clark 4103 Auckland 6 54.80%
18 Margaret Harkness 7844 Auckland 5 54.71%
19 Jo Clark 4097 Auckland 7 54.67%
20 Felicity Hannay 3671 Waiheke 5 54.50%
21 Beverley Morris 24081 Auckland 7 54.45%
22 Julia Thomas 27847 Christchurch 5 54.22%
23 Janet Barnard 1997 Auckland 12 54.15%
24 Carol Minchin 12176 Nelson 8 54.10%
25 Judith Chandler 9758 Auckland 15 54.08%
26 Carol Joseph 32272 Auckland 10 53.85%
27 Liz Ware 20198 Auckland 11 53.80%
28 Sara Worth 3548 None 12 53.73%
29 Dianne Evans 74554 Winton 6 53.63%
30 Trudy Lange 10107 Auckland 12 53.59%
31 Sybil Cornell 4518 Auckland 12 53.43%
32 Nicky Bowers 25766 Auckland 13 53.34%
33 Jan Bennett 36764 Auckland 5 53.26%
34 Anthony Wilson 31057 Auckland 6 53.09%
35 Ray Kingston 9878 Auckland 6 52.95%
36 Elizabeth Grieve 7446 Auckland 7 52.91%
37 Pauline Andrews 1608 Auckland 11 52.77%
38 Gay Bradbury 2863 Auckland 9 52.58%
39 Sandy Dravitzki 57552 Masterton 6 52.51%
40 Penny McRobie 11898 Auckland 7 52.50%
41 Pam Bannatyne 25503 Masterton 9 52.39%
42 William Leach 4318 Mt Albert 6 52.24%
43 Chris Fleming 30408 Auckland 6 52.17%
44 Sally Cole 20580 Auckland 6 52.03%
45 Cathy Carroll 31068 Waiheke 18 51.96%
46 Sharon Marryatt 32251 Auckland 7 51.89%
47 Bev Guilford 26527 Auckland 6 51.88%
48 Terry Cain 19882 Christchurch 9 51.87%
49 Joy Watkinson 5143 Auckland 10 51.82%
50 Kerri McCrae 3653 Auckland 9 51.81%
51 Tricia Bayley 8064 Otaki 13 51.79%
52 Allan Morris 24080 Auckland 5 51.66%
53 Gay Calderwood 29180 Otaki 10 51.52%
54 Leah Andrews 21534 Auckland 8 51.51%
55 Ruth Allison 58502 Nelson 5 51.49%
56 Derek Bartosh 3467 Auckland 6 51.39%
57 Jillian Ramsey 10632 Havelock North 8 51.21%
58 Anne Gelb 7057 Auckland 9 51.15%
59 Jennifer Beecroft 50796 Waiheke 5 51.08%
59 Sandra Turley-Miller 47457 Waiheke 5 51.08%
61 Heather Robertson 42382 Auckland 13 51.02%
62 Ian Beattie 32124 Christchurch 13 50.91%
63 Bev Henton 20075 Akarana 5 50.83%
64 Thelma Burd 32380 Hamilton 10 50.74%
64 Duncan White 18466 Hamilton 10 50.74%
66 Dave Almond 45127 Mt Albert 9 50.68%
67 Olya Weber 44655 North Shore 9 50.42%
 
Intermediate/Junior Ladder
Rank Name Number Club Played Average1
1 A♠ Marie Ewbank 6081 Auckland 10 55.90%
2 A♥ Hilda Burgess 24313 Victoria 7 55.54%
3 A♦ Trish Murphy 52605 Hastings 10 54.81%
4 A♣ Margaret Harkness 7844 Auckland 5 54.71%
5 K♠ Julia Thomas 27847 Christchurch 5 54.22%
6 K♥ Liz Ware 20198 Auckland 11 53.80%
7 K♦ Sara Worth 3548 None 12 53.73%
8 K♣ Sybil Cornell 4518 Auckland 12 53.43%
9 Q♠ Jan Bennett 36764 Auckland 5 53.26%
10 Q♥ Penny McRobie 11898 Auckland 7 52.50%
11 Q♦ William Leach 4318 Mt Albert 6 52.24%
12 Q♣ Chris Fleming 30408 Auckland 6 52.17%
13 J♠ Sally Cole 20580 Auckland 6 52.03%
14 J♥ Cathy Carroll 31068 Waiheke 18 51.96%
15 J♦ Terry Cain 19882 Christchurch 9 51.87%
16 J♣ Kerri McCrae 3653 Auckland 9 51.81%
17 Tricia Bayley 8064 Otaki 13 51.79%
18 Gay Calderwood 29180 Otaki 10 51.52%
19 Leah Andrews 21534 Auckland 8 51.51%
20 Derek Bartosh 3467 Auckland 6 51.39%
21 Jillian Ramsey 10632 Havelock North 8 51.21%
22 Jennifer Beecroft 50796 Waiheke 5 51.08%
22 Sandra Turley-Miller 47457 Waiheke 5 51.08%
24 Heather Robertson 42382 Auckland 13 51.02%
25 Ian Beattie 32124 Christchurch 13 50.91%
26 Thelma Burd 32380 Hamilton 10 50.74%
26 Duncan White 18466 Hamilton 10 50.74%
28 Dave Almond 45127 Mt Albert 9 50.68%
29 Olya Weber 44655 North Shore 9 50.42%
30 Jessica Morris 37607 Auckland 5 49.95%
31 Lanell Monreal 36035 Auckland 5 49.93%
31 Jan Hough 5056 Auckland 5 49.93%
33 Takayo Yanagisawa 36064 Auckland 8 49.83%
34 Jill Patterson 31186 Waiheke 7 49.82%
35 Jody Burchall 51578 Auckland 15 49.78%
36 Fiona Moon 30514 Auckland 11 49.71%
37 Monica Cheng 26670 Auckland 5 49.36%
38 Rineke Mansell 4269 Auckland 5 49.25%
39 Elizabeth Gollan 51587 Auckland 5 48.75%
40 Lynda Bateman 60047 Levin 7 48.51%
41 Helen Barker 37075 Nelson 6 47.90%
42 Elizabeth Hopley 39984 East Coast Bays 7 47.63%
43 John Lory 16275 Christchurch 6 47.60%
 
Junior Ladder
Rank Name Number Club Played Average1
1 A♠ Sara Worth 3548 None 12 53.73%
2 A♥ Kerri McCrae 3653 Auckland 9 51.81%
3 A♦ Jennifer Beecroft 50796 Waiheke 5 51.08%
3 A♦ Sandra Turley-Miller 47457 Waiheke 5 51.08%
5 K♠ Olya Weber 44655 North Shore 9 50.42%
6 K♥ Jody Burchall 51578 Auckland 15 49.78%
7 K♦ Monica Cheng 26670 Auckland 5 49.36%
8 K♣ Elizabeth Gollan 51587 Auckland 5 48.75%
9 Q♠ John Lory 16275 Christchurch 6 47.60%
10 Q♥ Thomas Freeman-Greene 51590 Auckland 9 47.22%
11 Q♦ Vivien Roberts 38074 Howick 5 47.17%
12 Q♣ Paul Cook 32258 Auckland 5 46.92%
13 J♠ Paula McTaggart 52641 Auckland 7 46.73%
 
 
Statistics for all boards:
Percentage when declarer: (12366) 50.97%
  ... percentage that made: (8163 of 12366) 66.01%
  ... when Opener holds at least 16 hcp: (3271) 50.66%
  ... when opened but most didn't: (287) 54.46%
  ... when Opener preempted: (1184) 50.56%
  ... was preempted when most didn't: (424) 53.04%
  ... when Declarer is distributional3: (1654 hands) 51.98%
  ... when in a unique contract: (2593) 45.17%
Percentage score when on opening lead: (12403) 49.05%
  ... when leading from a sequence4: (1898) 48.65%
  ... when leading trumps4: (308) 48.98%
  ... when trumps was the only right lead4: (6/197)
  ... when leading a singleton4: (746) 52.40%
  ... when leading a doubleton4: (499) 52.94%
  ... when leading passively4: (2790) 49.48%
  ... when leading actively4: (6124) 48.21%
Highest HCP: ♠ AK74 ♥ AK4 ♦ AKQ64 ♣ K [link] (26 hcp)
Freakiest Hand: ♠ KQJ10843 ♥ - ♦ - ♣ AQJ843 [link]
♠ AQJ10742 ♥ - ♦ - ♣ J97652 [link] (6.5)
Beer cards won: (28)
 
 
Frequency Declarer Is Making
This table is not just about play - it also relects bidding. There are two good ways to get on this table: (1) by being a great declarer, (2) by being a sound bidder; there are two bad ways to get on this table: (1) by being a chronic underbidder, and (2) by never sacrificing. Regardless of which category you fall into, it is better to be higher than lower in the ranking.
Rank Name Making Total Percent
1 A♠ Cynthia Clayton 41 47 87.23%
2 A♥ Barry Chisholm 29 34 85.29%
3 A♦ Sandy Connon 24 29 82.76%
4 A♣ Ray Kingston 38 46 82.61%
5 K♠ Marilyn Jackson 22 27 81.48%
6 K♥ Mairi Fitzsimons 26 32 81.25%
7 K♦ John Driscoll 47 58 81.03%
8 K♣ Liz Ewart 28 35 80.00%
9 Q♠ Mary Allison 23 29 79.31%
10 Q♥ Gopi Nayar 26 33 78.79%
11 Q♦ Neil Horsfield 25 32 78.13%
12 Q♣ Susan Wedde 32 42 76.19%
13 J♠ Liz Ware 51 67 76.12%
14 J♥ Rona Driscoll 54 71 76.06%
15 J♦ Hilary Metzger 19 25 76.00%
16 J♣ Anna Wall 41 54 75.93%
17 Vivienne Murray 22 29 75.86%
18 Jan Bennett 25 33 75.76%
19 Leslie Watt 77 102 75.49%
20 Pamela Dravitzki 63 84 75.00%
20 Sylvester Riddell 39 52 75.00%
22 John Buckleton 71 95 74.74%
23 Leah Andrews 38 51 74.51%
24 Arch Jelley 29 39 74.36%
24 Katherine Griffith 29 39 74.36%
26 Marie Ewbank 46 62 74.19%
27 Trudy Lange 68 92 73.91%
28 Bob Grover 28 38 73.68%
29 Rosa Mishkin 33 45 73.33%
29 Maree Cudby 22 30 73.33%
31 Beverley Morris 60 82 73.17%
32 Sita Monaghan 40 55 72.73%
32 Dale Lacey 24 33 72.73%
34 Ray Curnow 39 54 72.22%
35 Anne Gelb 57 79 72.15%
36 Dave Almond 31 43 72.09%
37 Carol Minchin 36 50 72.00%
38 Ming High 41 57 71.93%
39 Gay Calderwood 46 64 71.88%
39 Jerry Chen 23 32 71.88%
41 Fuxia Wen 28 39 71.79%
42 Russell Watt 96 134 71.64%
43 Md Faisal Alam 45 63 71.43%
43 Mike Dunn 20 28 71.43%
43 Douglas Russell 35 49 71.43%
46 Dong Gao Bi 47 66 71.21%
47 Paula Boughey 32 45 71.11%
48 Bev Henton 27 38 71.05%
49 John Lory 29 41 70.73%
49 Joanna Silk 29 41 70.73%
 
Double Dummy Declarer Success
This table shows how many tricks a declarer takes compared to double dummy play, given the actual lead. A figure of +1.0 for example would mean that on average the declarer takes one more trick than the double dummy result.
PositionNameHandsAverage
1 A♠ Grant Jarvis 29 +0.31
2 A♥ Mairi Fitzsimons 32 +0.28
3 A♦ Kevin Hu 25 +0.28
4 A♣ Hafizur Khan 63 +0.24
5 K♠ Sylvester Riddell 52 +0.23
6 K♥ Bob Grover 38 +0.21
7 K♦ Rosemary Jackson 26 +0.19
8 K♣ Graham Wakefield 53 +0.19
9 Q♠ Susan Macken 27 +0.19
10 Q♥ Dale Lacey 33 +0.18
11 Q♦ John Buckleton 95 +0.18
12 Q♣ Kathryn Brookes 31 +0.16
13 J♠ Md Faisal Alam 63 +0.14
14 J♥ Dave Almond 43 +0.14
15 J♦ Mary Allison 29 +0.14
16 J♣ Peter Ramsey 31 +0.13
17 Mike Dunn 28 +0.11
18 Dianne Evans 49 +0.10
19 Cheryl Winsor 83 +0.08
20 Bev Henton 38 +0.08
21 Fuxia Wen 39 +0.08
22 Pamela Dravitzki 84 +0.07
23 John Khouri 30 +0.07
24 Neil Horsfield 32 +0.06
25 Sue Spencer 33 +0.06
26 Hilda Burgess 58 +0.05
27 Russell Watt 134 +0.04
28 Robyn Freeman-Greene 25 +0.04
29 Sally Cole 52 +0.04
30 Jerry Chen 32 +0.03
31 Carol Minchin 50 +0.02
32 Nola Clark 26 +0.00
32 Olya Weber 80 +0.00
32 Shirley Lattimore 26 +0.00
32 Felicity Hannay 104 +0.00
32 Lorraine Inglis 27 +0.00
  
Contract Success
This table shows declarer's success in various contracts.
ContractFrequency% MadeAverage Score
1♣X 2 100.00% 90.00%
1♠X 3 100.00% 89.17%
3♣X 4 50.00% 78.44%
7N 5 80.00% 78.00%
7♥ 11 81.82% 72.73%
4♣X 9 22.22% 66.29%
6♣ 22 77.27% 65.72%
Pass 37 100.00% 57.95%
6N 74 60.81% 56.97%
2♥X 19 47.37% 56.88%
2♣X 3 0.00% 56.67%
1♥ 54 90.74% 55.95%
2♥ 686 73.32% 55.25%
4♥ 1483 72.02% 54.10%
1N 765 74.90% 53.99%
1NX 18 44.44% 53.95%
7♠ 6 50.00% 53.46%
6♦X 43 58.14% 53.19%
1♠ 100 79.00% 53.16%
2♣ 170 76.47% 53.12%
3N 1893 69.68% 52.99%
4♠ 1561 73.22% 52.97%
6♥ 164 75.00% 52.71%
2♠ 800 69.50% 52.49%
2♦X 265 72.45% 52.09%
 
Passed Out 37 100.00% 57.95%
Part Score 5863 64.71% 50.09%
Game+ 6503 67.18% 51.77%
Slam 435 63.91% 51.95%
Grand Slam 27 66.67% 62.62%
Doubled 1623 49.66% 45.99%
Redoubled 4 75.00% 75.00%
  
Double Dummy Opening Lead Success Rate
This table shows how often you make an opening lead that does not cost a trick for the defence, double dummy. Hands where every card leads to the same result are not counted.
PositionNameGood leadsTotalPercent
1 A♠ Dianne Evans 35 40 87.50%
2 A♥ Vivien Roberts 21 25 84.00%
3 A♦ Mairi Fitzsimons 26 31 83.87%
4 A♣ Anthony Wilson 62 74 83.78%
5 K♠ Md Faisal Alam 41 49 83.67%
6 K♥ Clare Cryer 24 29 82.76%
7 K♦ Alex Shan 23 28 82.14%
8 K♣ Pam Bannatyne 44 54 81.48%
8 K♣ ?? Cherie Scouller 22 27 81.48%
10 Q♥ Pamela Dravitzki 39 48 81.25%
11 Q♦ Leah Andrews 34 42 80.95%
12 Q♣ Barbara Wilkes 25 31 80.65%
13 J♠ Graham Wakefield 29 36 80.56%
14 J♥ Sylvester Riddell 20 25 80.00%
15 J♦ Fiona Moon 50 63 79.37%
16 J♣ Liz Ware 42 53 79.25%
17 Chris Turner 49 62 79.03%
18 Margaret Fraser 36 46 78.26%
19 Tricia Bayley 50 64 78.13%
20 Arch Jelley 27 35 77.14%
21 Neil Horsfield 20 26 76.92%
21 Tony Winters 20 26 76.92%
23 Sita Monaghan 23 30 76.67%
23 Penny McRobie 23 30 76.67%
23 Susan Steedman 23 30 76.67%
26 Paula Boughey 26 34 76.47%
27 Russell Watt 64 84 76.19%
28 Joy Watkinson 35 46 76.09%
29 Robin Hardley 19 25 76.00%
30 Peter Mclean 22 29 75.86%
31 Nicky Bowers 53 70 75.71%
32 Carol Harpur 28 37 75.68%
32 William Leach 28 37 75.68%
32 Sharon Marryatt 28 37 75.68%
35 Anna Powell 24 32 75.00%
35 Derek Bartosh 30 40 75.00%
37 Pauline Andrews 38 51 74.51%
38 Susan Wedde 29 39 74.36%
39 Felicity Hannay 63 85 74.12%
40 Sue Spencer 20 27 74.07%
41 Janet Barnard 62 84 73.81%
42 Dong Gao Bi 39 53 73.58%
43 Cynthia Clayton 22 30 73.33%
44 Chris Fleming 19 26 73.08%
45 Carol Minchin 35 48 72.92%
45 Rosa Mishkin 35 48 72.92%
47 Jody Burchall 43 59 72.88%
48 Anne Gelb 32 44 72.73%
49 Rona Driscoll 45 62 72.58%
50 Nola Clark 21 29 72.41%
  
Opening Bid Success Rates
This table shows the average outcome for each opening bid for the opening side.
OpeningCountFrequencyAverage Result
1♣ 2584 20.90% 49.40%
1♦ 2152 17.40% 50.38%
1♥ 2075 16.78% 51.10%
1♠ 1985 16.05% 50.93%
1N 1838 14.86% 52.05%
2♣ 284 2.30% 52.96%
2♦ 420 3.40% 50.62%
2♥ 294 2.38% 50.39%
2♠ 259 2.09% 49.77%
2N 164 1.33% 51.16%
3♣ 67 0.54% 49.17%
3♦ 60 0.49% 54.73%
3♥ 27 0.22% 52.04%
3♠ 93 0.75% 50.22%
3N 4 0.03% 48.75%
4♣ 5 0.04% 64.27%
4♦ 8 0.06% 35.60%
4♥ 15 0.12% 45.73%
4♠ 25 0.20% 44.75%
5♣ 4 0.03% 66.25%
5♦ 3 0.02% 58.10%
 

1 For the ladder: you need to have played at least 5 times in Open sessions during the period to be listed. For every 2 extra sessions you play above that you get to drop your lowest score, e.g. if you play 9 times your worst 2 scores are discarded and the best 7 are averaged, or if you play 15 times your worst 5 scores are discarded and the best 10 are averaged. Only those sessions where you played with a partner with the same grade or higher are included because we want to encourage players to play with lower graded friends without affecting their average. Only sessions where you played at least 10 boards are included. Some sessions are harder than others but we aren't adjusting for that. Supervised/Beginner/Learner sessions aren't included. For monthly emails we show just the top 50. On the website we show a more complete ladder - those with an average equal to or higher than: 50% (Open), 47.5% (Intermediate), and 45% (Junior). Matches scored in X-IMPS/IMPS are converted to a percentage using the formula used by the EBU National Grading System.

2 For multi-session results the position shown is the overall position for all the sessions played up to that point.

3 Distributional means having a 7+ card suit or a void.

4 Leads are imperfectly classified into leads of trumps, a sequence (eg QJ10 or QJ9 not Q109), a singleton or low doubleton vs. a suit contract, passive (a suit headed by the 10 or lower), or active (anything else). No account is taken (currently) of the bidding: whether you have led the unbid suit, partner's suit, or obeyed a lead directing double, etc.

5 [link] links to the actual hand in RealBridge, [BSOL] links to the hand in BridgeSolverOnline - click the highlighted contract in the makeable contracts table and the lead success will be calculated, your lead shows with an asterisk.

To send feedback email realbridge@akbc.co.nz; to contact the principal director email director@akbc.co.nz

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