ATP Open Era & Live Rankings

RANKING RULES BETWEEN 1979 AND 1983

The ATP continued the change to the ranking system they started in 1978. After the replacement they made to the bonus system in the previous year, the replaced the static categories with a star system, giving off 10 point increments to the winner of an event for each extra star the event was worth.

SYSTEM SPAN: 52-WEEK ROLLING SYSTEM [Tournaments counted for each player drop out of their breakdown 52 weeks after they enter the system]
SYSTEM TYPE: STAR BASED [Tournaments have different point weights according to the number of stars a tournament held. The stars were assigned according to rules described below]
POINTS: SIMPLE AVERAGE [Players receive points according to the round they are eliminated in. These points are added and players are ordered according to the average resulted from the total points being divided to the number of tournaments a player participated in.]
TOURNAMENTS: MINIMUM OF 12 [Players could count as many tournaments as possible, but the average was obtained from a minimum divisor of 12. Players with less than 12 tournaments obtained their average by dividing their total points to 12]
MINIMUM PRIZE MONEY: $25000

BASE RULES

All tournaments are counted immediately after they are finished (on the upcoming Monday). Some exceptions may occur with some Challenger tournaments, which will be marked as a late entry into the rankings. Another exception to this rule are Satellite circuits which are counted one week later after the Masters final tournament has been played. Once into the system, tournaments remain counted for 52 weeks.
The rankings are published every Monday of the year. Exception to this rule are the mid-Mondays of tournaments lasting for more than one week and weeks without any Grand Prix tournament.
Players withdrawing before the first round is played will count the tournament to their average list, and late withdrawals will count as a penalty of 1 point (and tournaments counted for average).

TIES

When two or more players have the exact same average, they will be considered ranked on the same position.

STAR ASSIGNATION

Tournament categories were replaced in 1979 by star assignation. Tournaments were given stars according to the following rules:

Prize Money: Tournaments receive one star for each increment of $25000 in prize money.
Draw Size: 32 players - 0 Stars. 48 players - 1 Star. 64 players - 2 Stars. 128 players - 3 Stars. By exception, tournaments of less than $50000 would receive a maximum of one half stars for 48 or 64 player draws.
Draw Difficulty: Based on the total ranking of the Top 20 players inside the draw: [1..450] - 3 Stars. [451..850] - 2 Stars. [851..1550] - 1 Star. [1551+] - 0 Stars.

POINTS

Players are given points according to the round they lose in and the tournament's star rating. In adition players receive bonus points for defeating ranked and/or seeded players.
Players reaching the second or any round of a tournament by drawing a Bye shall receive first round points if they lose in the first round they play in.
Players losing in the first round of any tournament receive 1 point no matter the draw size. Qualifiers receive 1 additional point to their total for the tournament.
The table below shows the point distribution for tournament star rating, tournament main draw size and round. The colors in this table are valid for 1979-1981 and are the same used inside the Ranking tables from this site on ranking weeks where this system applies.

CATEGORY	MD	W	F	SF	QF	R16	R32	R64	R128	Q
30*	128	310	233	155	78	39	20	10	1	1
29*	128	300	225	150	75	38	19	10	1	1
28*	128	290	218	145	73	37	19	10	1	1
27*	128	280	210	140	70	35	18	9	1	1
26*	128	270	203	135	68	34	17	9	1	1
25*	128	260	195	130	65	33	17	9	1	1
24*	128	250	188	125	63	32	16	8	1	1
23*	128	240	180	120	60	30	15	8	1	1
22*	128	230	173	115	58	29	15	8	1	1
21*	128	220	165	110	55	28	14	7	1	1
20*	128	210	158	105	53	27	14	7	1	1
19*	128	200	150	100	50	25	13	7	1	1
18*	128	190	143	95	48	24	12	6	1	1
17*	128	180	135	90	45	23	12	6	1	1
16*	128	170	128	85	43	22	11	6	1	1
15*	64	160	120	80	40	20	10	1(5)	-(1)	1
14*	64	150	113	75	38	19	10	1(5)	-(1)	1
13*	64	140	105	70	35	18	9	1(5)	-(1)	1
12*	64	130	98	65	33	17	9	1(5)	-(1)	1
11*	64	120	90	60	30	15	8	1(4)	-(1)	1
10*	64	110	83	55	28	14	7	1(4)	-(1)	1
9*	32	100	75	50	25	13	1(7)	-(1)		1
8*	32	90	68	45	23	12	1(6)	-(1)		1
7*	32	80	60	40	20	10	1(5)	-(1)		1
6*	32	70	53	35	18	9	1(5)	-(1)		1
5*	32	60	45	30	15	8	1(4)	-(1)		1
4*	32	50	38	25	13	7	1(4)	-(1)		1
3.5*	32	45	34	23	12(18)	6(12)	1(6)	-(1)		1
3*	32	40	30	20	10(15)	5(10)	1(5)	-(1)		1
2.5*	32	35	27	18	9(13)	5(9)	1(6)	-(1)		1
2*	32	30	23	15	8(11)	4(8)	1(5)	-(1)		1
1.5*	32	25	19	13	7(10)	4(7)	1(4)	-(1)		1
1*	32	20	15	10	5(7)	3(5)	1(3)	-(1)		1

For 1982, the same points and structure as the above apply, but the colors used by the Ranking table are as follows:
19+ STARS
16-18 STARS
13-15 STARS
10-12 STARS
7-9 STARS
4-6 STARS
1-3.5 STARS
For 1983, the same points and structure as the above apply, but the colors used by the Ranking table are as follows:
21+ STARS
17-20 STARS
13-16 STARS
10-12 STARS
7-9 STARS
4-6 STARS
1-3.5 STARS
Additionally, from 31 to 40 stars, the same increment is applied, 10p for the winner, 75% for the finalist, 5p for the semi-finalist, half of SF points (ceiling rounding) for QF, half of QF points (ceiling rounding) for R16, half of R16 points to R32, half of R32 to R64 and 1p constantly for R128 (the first round).

BONUS POINTS

Players receive bonus points for defeating Top 24 ranked players. The match must have been played in order to count (withdrawals do not count). Players get 3p for defeating players ranked 1-8, 2p for players ranked 9-16 and 1p for players ranked 17-24.
Additionally, players get bonus points for defeating seeded players. If a tournament pays more than $50000 in prize money, players receive bonus points as follows: 4p for defeating a seed within the top quarter of seeds, 3p for the second quarter, 2p for the third and 1p for the final quarter.
In tournaments with $50000 or less prize money, players get 2 bonus points for defeating a seed within the top half of seeds, and 1 point for one in the bottom half.

RANKING RULES BETWEEN 1979 AND 1983

The ATP continued the change to the ranking system they started in 1978. After the replacement they made to the bonus system in the previous year, the replaced the static categories with a star system, giving off 10 point increments to the winner of an event for each extra star the event was worth.

SYSTEM SPAN: 52-WEEK ROLLING SYSTEM [Tournaments counted for each player drop out of their breakdown 52 weeks after they enter the system]

SYSTEM TYPE: STAR BASED [Tournaments have different point weights according to the number of stars a tournament held. The stars were assigned according to rules described below]

POINTS: SIMPLE AVERAGE [Players receive points according to the round they are eliminated in. These points are added and players are ordered according to the average resulted from the total points being divided to the number of tournaments a player participated in.]

TOURNAMENTS: MINIMUM OF 12 [Players could count as many tournaments as possible, but the average was obtained from a minimum divisor of 12. Players with less than 12 tournaments obtained their average by dividing their total points to 12]

MINIMUM PRIZE MONEY: $25000

BASE RULES

The rankings are published every Monday of the year. Exception to this rule are the mid-Mondays of tournaments lasting for more than one week and weeks without any Grand Prix tournament.

Players withdrawing before the first round is played will count the tournament to their average list, and late withdrawals will count as a penalty of 1 point (and tournaments counted for average).

TIES

When two or more players have the exact same average, they will be considered ranked on the same position.

STAR ASSIGNATION

Tournament categories were replaced in 1979 by star assignation. Tournaments were given stars according to the following rules:

Prize Money: Tournaments receive one star for each increment of $25000 in prize money.

Draw Size: 32 players - 0 Stars. 48 players - 1 Star. 64 players - 2 Stars. 128 players - 3 Stars. By exception, tournaments of less than $50000 would receive a maximum of one half stars for 48 or 64 player draws.

Draw Difficulty: Based on the total ranking of the Top 20 players inside the draw: [1..450] - 3 Stars. [451..850] - 2 Stars. [851..1550] - 1 Star. [1551+] - 0 Stars.

POINTS

Players are given points according to the round they lose in and the tournament's star rating. In adition players receive bonus points for defeating ranked and/or seeded players.

Players reaching the second or any round of a tournament by drawing a Bye shall receive first round points if they lose in the first round they play in.

Players losing in the first round of any tournament receive 1 point no matter the draw size. Qualifiers receive 1 additional point to their total for the tournament.

The table below shows the point distribution for tournament star rating, tournament main draw size and round. The colors in this table are valid for 1979-1981 and are the same used inside the Ranking tables from this site on ranking weeks where this system applies.

For 1982, the same points and structure as the above apply, but the colors used by the Ranking table are as follows: 19+ STARS16-18 STARS13-15 STARS10-12 STARS7-9 STARS4-6 STARS1-3.5 STARS

For 1983, the same points and structure as the above apply, but the colors used by the Ranking table are as follows: 21+ STARS17-20 STARS13-16 STARS10-12 STARS7-9 STARS4-6 STARS1-3.5 STARS

BONUS POINTS

Players receive bonus points for defeating Top 24 ranked players. The match must have been played in order to count (withdrawals do not count). Players get 3p for defeating players ranked 1-8, 2p for players ranked 9-16 and 1p for players ranked 17-24.

Additionally, players get bonus points for defeating seeded players. If a tournament pays more than $50000 in prize money, players receive bonus points as follows: 4p for defeating a seed within the top quarter of seeds, 3p for the second quarter, 2p for the third and 1p for the final quarter.

In tournaments with $50000 or less prize money, players get 2 bonus points for defeating a seed within the top half of seeds, and 1 point for one in the bottom half.

For 1982, the same points and structure as the above apply, but the colors used by the Ranking table are as follows:
19+ STARS
16-18 STARS
13-15 STARS
10-12 STARS
7-9 STARS
4-6 STARS
1-3.5 STARS

For 1983, the same points and structure as the above apply, but the colors used by the Ranking table are as follows:
21+ STARS
17-20 STARS
13-16 STARS
10-12 STARS
7-9 STARS
4-6 STARS
1-3.5 STARS