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Discussion Starter #2
Prize Money Based Additive Best 14 System Part I [1990-1994]

1990:
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1991:
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1992:
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1993:
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1994:
<Not Yet Available>
 

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Discussion Starter #3
Prize Money Based Additive Best 14 System Part II [1995-1999]

1995:
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1996:
<Not Yet Available>

1997:
<Not Yet Available>

1998:
<Not Yet Available>

1999:
<Not Yet Available>
 

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Discussion Starter #4
First Category Based Additive Best 18 System Part I [2000-2004]

2000:
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2001:
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2002:
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2003:
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2004:
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Discussion Starter #5
First Category Based Additive Best 18 System Part II [2005-2008]

2005:
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2006:
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2007:
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2008:
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Discussion Starter #7 (Edited)
Second Category Based Additive Best 18 System Part II [2014- ]

2014: (RANKING SYSTEM - ACTUAL SYSTEM)
06/01/2014
13/01/2014
27/01/2014
03/02/2014
10/02/2014
17/02/2014
24/02/2014
03/03/2014
17/03/2014
31/03/2014
07/04/2014
14/04/2014
21/04/2014
28/04/2014
05/05/2014
12/05/2014
19/05/2014
26/05/2014
09/06/2014
16/06/2014
23/06/2014
07/07/2014
14/07/2014
21/07/2014
28/07/2014
04/08/2014
11/08/2014
18/08/2014
25/08/2014
08/09/2014
15/09/2014
22/09/2014
29/09/2014
06/10/2014
13/10/2014
20/10/2014
27/10/2014
03/11/2014
10/11/2014
17/11/2014
24/11/2014 [YEAR END RANKINGS]
01/12/2014
08/12/2014
15/12/2014
22/12/2014
29/12/2014

2015: (RANKING SYSTEM - ACTUAL SYSTEM)
05/01/2015
12/01/2015
19/01/2015
02/02/2015
09/02/2015
16/02/2015
23/02/2015
02/03/2015
09/03/2015
23/03/2015
06/04/2015
13/04/2015
20/04/2015
27/04/2015
04/05/2015
11/05/2015
18/05/2015
25/05/2015
08/06/2015
15/06/2015
22/06/2015
29/06/2015
13/07/2015
20/07/2015
27/07/2015
03/08/2015
10/08/2015
17/08/2015
24/08/2015
31/08/2015
14/09/2015
21/09/2015
28/09/2015
05/10/2015
12/10/2015
19/10/2015
26/10/2015
02/11/2015
09/11/2015
16/11/2015
23/11/2015
30/11/2015 [YEAR END RANKINGS]
07/12/2015
14/12/2015
21/12/2015
28/12/2015

2016: (RANKING SYSTEM - ACTUAL SYSTEM)
04/01/2016
11/01/2016
18/01/2016
01/02/2016
08/02/2016
15/02/2016
22/02/2016
29/02/2016
07/03/2016
21/03/2016
04/04/2016
11/04/2016
18/04/2016
25/04/2016
02/05/2016
09/05/2016
16/05/2016
23/05/2016
06/06/2016
13/06/2016
20/06/2016
27/06/2016
11/07/2016
18/07/2016
25/07/2016
01/08/2016
08/08/2016
15/08/2016
22/08/2016
29/08/2016
12/09/2016
19/09/2016
26/09/2016
03/10/2016
10/10/2016
17/10/2016
24/10/2016
31/10/2016
07/11/2016
14/11/2016
21/11/2016
28/11/2016 [YEAR END RANKINGS]
05/12/2016
12/12/2016
19/12/2016
26/12/2016

2017: (RANKING SYSTEM - ACTUAL SYSTEM)
02/01/2017
09/01/2017
16/01/2017
30/01/2017
06/02/2017
13/02/2017
20/02/2017
27/02/2017
06/03/2017
20/03/2017
03/04/2017
10/04/2017
17/04/2017
24/04/2017
01/05/2017
08/05/2017
15/05/2017
22/05/2017
29/05/2017
 

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Discussion Starter #12
Status update on 1982:

1982:
[PRELIMINARY RUN]

This preliminary run has the purpose of employing the rules of the rankings in order to determine a mockup of the stars assigned to tournaments in 1982. This initial model will then be run through the algorithm to determine the actual stars ATP awarded to tournaments. You will notice (if you access the files via OneDrive) that the points will differ significantly from the official figures, although placement of players may not differ by much. The succession of the #1 player is exactly the same as the official records show.
 

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Discussion Starter #13
Whilst doing the 1982 preliminary run, I discovered a unique set of circumstances which applies after 1981 (because 1981 has a lot of ATP missing data), which would enable me to solve 1982-1985 star systems in one go. For that though, I need a piece of the puzzle which I was not yet able to obtain.

I asked through email already, but I believe it can help even better if more people get involved. If anyone has this possibility, it would move the research on fast forward (well, it would still require some work, but it would be faster). I need as many 1985 intermediary rankings with points (not just averages) as possible. For it to have any effect, perhaps at least one ranking set per month of 1985 should do, and it doesn't have to be more than Top 50, but it does need to show the full amount of points per player.

Hope there is a way here and thanks a million if anyone can do it.
 

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Whilst doing the 1982 preliminary run, I discovered a unique set of circumstances which applies after 1981 (because 1981 has a lot of ATP missing data), which would enable me to solve 1982-1985 star systems in one go. For that though, I need a piece of the puzzle which I was not yet able to obtain.

I asked through email already, but I believe it can help even better if more people get involved. If anyone has this possibility, it would move the research on fast forward (well, it would still require some work, but it would be faster). I need as many 1985 intermediary rankings with points (not just averages) as possible. For it to have any effect, perhaps at least one ranking set per month of 1985 should do, and it doesn't have to be more than Top 50, but it does need to show the full amount of points per player.

Hope there is a way here and thanks a million if anyone can do it.

Which ones do you have now? Only the YE1985 or do you have others?

I have april, june, august and october 1982 if you're missing those.
 

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Discussion Starter #15
Which ones do you have now? Only the YE1985 or do you have others?

I have april, june, august and october 1982 if you're missing those.
I have only YE 1985.

I need a lot of weekly 1985 rankings, as many as possible.

I think I have the 1982 ones you refer to April 26, June 21, August 23 and October 25. Correct?
 

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I have only YE 1985.

I need a lot of weekly 1985 rankings, as many as possible.

I think I have the 1982 ones you refer to April 26, June 21, August 23 and October 25. Correct?
Yes, I thought you had those but wanted to be sure.

I have a couple of old newspapers that published rankings occasionally I can look through for rankings. Unfortunately they seldom went far down the list, mostly top-10 or top-20, but I haven't tried them for 1985 yet so can look see.
 

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Discussion Starter #17
I have a couple of old newspapers that published rankings occasionally I can look through for rankings. Unfortunately they seldom went far down the list, mostly top-10 or top-20, but I haven't tried them for 1985 yet so can look see.
Even a top 10 would be better than nothing. The important thing would be that all major tournaments are covered, no matter how many players there are. A top 10 or top 20 will not provide coverage for lesser tournaments, but those could be deducted after that.:wink2:
 

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Discussion Starter #18
Alright, I got huge help here, and I would like to address my thanks to Salvatore Mamola and to @Pete7. You made this all possible.:worship:

First step has already been complete. I started bridging the years. Observations:

- 1984 is not only a ranking reform, it's also a technological leap for the ATP. They basically upgraded their verification method. There's simply no error or very little errors after this.
- As suspected, the 1984-1989 bonus system remained in place without any change (1-5: 30p; 6-10: 24p; 11-15: 20p; 16-20: 16p; 21-30: 12p; 31-50: 6p; 51-75: 3p; 76-100: 2p; 101-150: 1p).
- In 1982, the ATP switched to awarding bonus points according to entry rankings, instead of the immediately preceding rankings. This will force me to not change original post-1982 bonus points, because it's impossible to trace the actual entry rankings the ATP used - the number of weeks between entry and tournament start was NOT standard yet (and since it became a rule, I am forced to go with it).

Here are the two players bridged for now:

McEnroe:
Code:
1985
Philadelphia 10* - 158 - 110 + 48
Houston 9* - 139 - 100 + 39
Milan 9* - 132 - 100 + 32
Chicago 8* - 114 - 90 + 24
Atlanta 9* - 137 - 100 + 37
Forest Hills 16* F - 158 - 128 + 30
Roland Garros 26* SF - 181 - 135 + 46
Wimbledon 27* QF - 71 - 70 + 1
Stratton Mountain 11* - 166 - 120 + 46
Canada 11* - 192 - 120 + 72
US Open 28* F - 289 - 218 + 71
Los Angeles 8* SF - 67 - 45 + 22
San Francisco 7* QF - 35 - 20 + 15
Stockholm 9* - 157 - 100 + 57
Australian Open 18* QF - 67 - 48 + 19
2063 / 2063

1984
Philadelphia 10* - 180 - 110 + 70
Madrid 7* - 164 - 80 + 84
Brussels 8* - 160 - 90 + 70
Roland Garros 24* F - 286 - 188 + 98
Queen's 10* - 155 - 110 + 45
Wimbledon 25* - 326 - 260 + 66
Canada 11* - 190 - 120 + 70
Cincinnati - 1
US Open 26* - 362 - 270 + 92
San Francisco 7* - 129 - 80 + 49
Stockholm 9* - 165 - 90 + 75
Wembley - 0
2118 / 2118

1983
Philadelphia 15* - 186 - 160 + 26
Las Vegas - 1
Roland Garros 30* (?) QF - 75 + 4 = 79 (?)
Queen's 13* (?) F - 105 + 10 = 115 (?)
Wimbledon 36* (?) - 392 - 370 + 22
Canada 17* SF - 92 - 90 + 2
Cincinnati 19* F - 159 - 150 + 9
US Open 38*(?) - 49 (?)
San Francisco 11*(?) F - 104 (?)
Sydney 9*(?) - 103 - 100 + 3
Wembley 13*(?) - 147 - 140 + 7
AUS Open 25* - 132 - 130 + 2
1559 / 1559

1982
Philadelphia 14*(?) - 150 + 14 = 164 
Memphis 12*(?) F - 98 + 21 = 119
Brussels 11* QF - 30
Queen's 9* F - 90 - 75 + 15
Wimbledon 26* F - 208 - 203 + 5
Canada 16* SF - 85 + 2 - 87
Cincinnati 16* SF - 177 - 85 + 5 - 90
US Open 28* SF - 155 - 145 + 10
San Francisco 11*(?) - 136 - 120 + 16
Sydney 9*(?) - 113 - 100 + 13
Tokyo Ind 14*(?) - 162 - 150 + 12
Wembley 10* - 117 - 110 + 7
1471 / 1471
Lendl:
Code:
1985
Delray Beach 22* R16 - 42 - 29 + 13
Fort Meyers 8* - 156 - 90 + 66
Monte Carlo 10* - 183 - 110 + 73
Forest Hills 16* - 233 - 170 + 63
Roland Garros 26* F - 269 - 203 + 66
Wimbledon 27* R16 - 43 - 35 + 8
Indianapolis 11* - 192 - 120 + 72
Stratton Mountain 11* F - 144 - 90 + 54
Canada 11* F - 139 - 90 + 49
US Open 28* - 379 - 290 + 89
Stuttgart Outdoor 4* - 95 - 50 + 45
Sydney Indoor 7* - 115 - 80 + 35
Tokyo Indoor 9* - 202 - 100 + 102
Wembley 9* - 188 - 100 + 88
Australian Open 18* SF - 105 - 95 + 10
2485 / 2485

1984
Philadelphia 10* - 125 - 83 + 42
Brussels 8* F - 126 - 68 + 58
Rotterdam 8* F - 83 - 68 + 15
Luxembourg 7* - 144 - 80 + 64
Monte Carlo 9* QF - 49 - 25 + 24
Roland Garros 24* - 374 - 250 + 124
Queen's 10* - 1
Wimbledon 25* SF - 165 - 130 + 35
Canada 11* - 1
US Open 26* F - 278 - 203 + 75
Sydney Indoor 7* F - 90 - 60 + 30
Tokyo Indoor 9* F - 90 - 75 + 15
Wembley 8* - 173 - 90 + 83
Australian Open 18* R16 - 29 - 24 + 5
1728 / 1728

1983
Philadelphia 15* F - 123 - 120 + 3
Brussels 13*(?) F - 131 - 105 + 26
Milan 16*(?) - 186 - 170 + 16
Monte Carlo - 1
Hamburg (?)- 17
Roland Garros 30* (?) QF - 75 + 3 = 78 (?)
Queen's 13* (?) SF - 70 + 10 = 80 (?)
Wimbledon 36* SF (?) - 179 (?) [Number of points is 179, but it's lower than 185, the correct SF points for 36* - POSSIBLE UNCORRECTED ERROR]
Canada 17* - 190 - 180 + 10
Cincinnati 19* F - 100
US Open 38*(?) F - 327 - 293 + 34
San Francisco 11*(?) - 132 - 120 + 12
Sydney 9*(?) QF - 25
Tokyo Indoor 14*(?) - 152 - 150 + 2
Australian Open 24* - 223 - 188 + 35
1944 / 1944

1982
Palm Springs 12* F - 98
Frankfurt 11*(?) - 127 - 120 + 7
Monte Carlo 14*(?) F - 120 - 113 + 7
Madrid 9* F - 76 - 75 + 1
Roland Garros 24* R16 - 32
Boston 10* QF - 32 - 28 + 4
Washington 11* (?) - 134 - 120 + 14
North Conway 11* (?) - 144 - 120 + 24
Canada 16* F - 149 - 128 + 21
Cincinnati 16* - 190 - 170 + 20
US Open 28* F - 227 - 218 + 9
Barcelona 12* QF - 51 - 33 + 18 (POSSIBLE ERROR: SHOULD HAVE BEEN 36p)
1380 / 1380
The ? marks are in place where the number of stars is not yet determined (but it will be by the end of the bridge process). There are possible errors noted (only in 1982 and 1983), which may not be so.
 

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First step has already been complete. I started bridging the years.
That is great news. I am looking forward to your results.

I once tried to deduct the bonus points from total points to arrive at the tournament points in 1984 and 1985, but got contradictory results. Maybe it was because of those entry rankings in bonus point allocation that you have mentioned.
 
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