Separation of Lanthanides/ Lanthanides and Actinides
Rankings determination- Golf and Tennis presentation
1. An Overview of Tennis and Golf
World Ranking Systems
(Men’s and Women’s)
2. A sports ranking classification system is a
system that analyzes the results of sports
matches to provide rankings for players or
teams of a particular league or
competition.
Rankings are arranged in an ordinal
fashion, with the highest rank person or
team earning the #1 rank, the second
highest the #2 rank, and so on.
3. In
some sports, like tennis and golf, the
ranking system is used to determine
qualification for entry and seeding in
tournaments.
In other sports, like American college
basketball and football, the ranking
system is used to determine opportunities
to participate in post-season competitions,
and also seeding and home-team
advantage within the tournament.
4. The system of determining national and
international rankings for tennis and golf
have developed over a number of years to
deal with changes in the light of conflicts
between amateur and professional tours,
the commercial viability of tournaments and
prize money allocation.
5. Association
of Tennis Professionals (ATP)
formed in 1972 as a kind of union for male
players, and a year later introduced its own
computerized ranking system, which is
recognized today as the standard “official”
system.
The Women’s Tennis Association (WTA)
formed in 1973 and soon created a similar
ranking system based on a multi-tiered
structure of tournaments.
6. Since the 70s, there have been numerous
changes to both ranking systems, as
oversights were made apparent and
changes made to account for the massive
growth in tennis globally and commercially.
7. The four Grand Slams (controlled by the ITF) are
worth the most ranking points (winners get 2000
points), followed by the ATP World Tour events,
split into the ATP World Tour Finals (1100-1500
points), the nine ATP World Tour Masters 1000
tournaments (1000 points).
The eleven ATP World Tour 500 series
competitions (500 points).
The forty ATP World Tour 250 series competitions
(250 points).
Next are the ATP Challenger (75-125 points) and
then ITF Futures tournaments (17-33 points).
8. Rankings are determined by taking the
total from the best 18 tournaments (19 if a
player qualifies for the Masters’ Cup) from
which the player earned the most points
from the previous 52 weeks.
9. Points by Round
Futures
ATP World
Tour 250
Challengers
ATP World
Tour 500
Masters
1000
Grand Slam
Winner
35
125
250
500
1000
2000
Finals
20
75
150
300
600
1200
Semifinals
10
45
90
180
360
720
Quarterfinals
4
25
45
90
180
360
Round of 16
1
10
20
45
90
180
Round of 32
12
20
45
90
Round of 64
10
25
45
10
10
16
25
Round of 128
Qualifying
5
5
10
10. Singles
Playoff
Round
Playoff
Round
1st Round
Loss
1st Round
1st Round
Quarterfinals
Quarterfinals
Semifinals
Semifinals
Finals
Finals
Finals
Win per
Match
Loss per
Match
Team
Bonus
Performance
Bonus
Wins
Cumulative
Playoff
Round
5
Loss per
Match
Team
Bonus
Wins
Cumulative
10
1st Round
Loss
10
10
1st Round
10
40
40
65
65
70
70
75
40
80
145
210
280
350
425
500
75
75
Doubles
Win per
Match
125
625
50
50
Quaterfinals
80
130
Semifinals
90
220
Finals
95
315
Winners
95
35
350
11. The
WTA structure also looked different
before and after 2009.
Below the Grand Slam events, the
women’s tour used to comprise Tier I and II
events, which are now divided into three
classes of Premier event, and Tier III and
IV events, which are now called
International tournaments.
12. Like the ATP, it prioritizes and offers most points for its
four Grand Slam events (winners get 2000 points), but
has a different system of mandatory and optional
events below this.
The top women must play four of its Premier
Mandatory tournaments (1000 points), as well as the
end-of-season Tour Championships (1500 points) and
at least two of the Premier 5 tournaments (900 points).
They make up their remaining points from a choice of
ten Premier tournaments (470 points) and 31
International (280 points) tournaments. Below this are
the numerous smaller ITF tournaments (12-150
points).
13. Points by
Round
Winner
Finals
Semifinals
Quarterfin
als
Round of
16
Round of
32
Round of
64
Round of
128
Qualifier
Round
Robin
Match
Round
Robin Win
ITF Circuit
Events
International
Events
Premier
600,700
Premier
5
Tournament
of
WTA
Champions Championships Majors
Premier
Mandatory
150
110
280
200
470
320
900
620
1000
700
375
255
1500
1050
2000
1400
80
130
200
395
450
180
690
900
40
70
120
225
250
500
20
30
60
125
140
280
1
15
40
70
80
160
1
1
1
50
100
5
5
30
60
6
10
12
30
25
70
35
160
14. Initially,
the rankings were calculated by a
total point score over a three-year period,
with a system that added more weight to
recent results.
In 1989, this system was replaced by one
that better rewarded quality over quantity,
and did not in effect discriminate against
older golfers who tended to play fewer
tournaments.
15. Alongside the four Majors (winners get 100
points), are the World Golf Championship (WGC)
tournaments (avg. 70-80 points) and regular tour
events.
Of the leading nine professional tours, the PGA
and European tours offer the most points
(minimum 24 points).
Next is the Japan Golf Tour and the PGA Tour of
Australasia (16 points).
Then Sunshine, Asian and Nationwide Tours (14
points).
And lastly, Challenge Tour (12 points) and the
Canadian Tour (6 points).
17. An
official ranking system for women’s golf
was devised in 2004 at the World
Congress of Women’s Golf, but was not
instigated until 2006.
The system is similar to the men’s, in that
a player’s average score over a two-year
period is considered, with most recent
tournaments being more heavily weighted.
19. Overall, professional tennis players and
golfers recognize the value of the ranking
system, and are always at the forefront of
changes made to their respective systems.
Governing bodies consult players when
deciding on potential changes, and are
open to suggestions to ensure a suitable
balance between fairness and striving to
maximize growth in their sports.