Fourth-ranked South Africa will aim to climb up to second position in the ICC ODI Team Rankings when they host world champions Australia in the five-match series from 30 September.
A busy limited-overs cricket period, which starts on 25 September with the Bangladesh versus Afghanistan ODI in Mirpur and the one-off South Africa versus Ireland ODI in Benoni and culminates with the third ODI between Bangladesh and England in Mirpur and fifth ODI between South Africa and Australia in Cape Town on 12 October, will see 16 matches being played between eight teams on the ICC ODI rankings with a year to go before the determination of which seven highest-ranked sides along with England will qualify automatically for the ICC Cricket World Cup 2019.
While Australia and South Africa will aim to consolidate their current positions, Bangladesh, West Indies and Pakistan will target to improve their rankings.
The string of matches start on Sunday with the first of three-match ODI series between Bangladesh and Afghanistan in Mirpur and a one-off ODI between South Africa and Ireland in Benoni.
Ireland also gets a match against Australia in Benoni on September 27, while Pakistan and West Indies will play a three-match series in the United Arab Emirates from September 30 to October 5. Bangladesh will host England for three ODIs from October 7 to October 12.
World champion Australia is currently on 124 points and without an immediate threat to its top ranking with New Zealand second on 113 points.
But a series win for South Africa, which is fraction of a point behind India, against Australia could help it move ahead of the reigning ICC Champions Trophy winner. A 3-2 series win will put South Africa in third position on 112 points, while a 4-1 series win will lift it to second position on 114 points.
For Australia, a 3-2 series win will maintain its current 124 points with a maximum drop to 118 points in the case of a 5-0 series whitewash. Even if it also loses its preceding one-off match to Ireland and gets blanked by South Africa, Australia will retain number-one position at 116 points with South Africa behind it on decimal points.
For Bangladesh, which is currently seventh-ranked with 98 points, a 3-0 win against Afghanistan and a 2-1 win against England could help it move to sixth place, ahead of Sri Lanka on decimal points.
England will retain its fifth position, irrespective of how the series pans out.
Former world champion Pakistan, which is the top-ranked Test side but is struggling in ninth position, but can overtake eighth-ranked West Indies only with a 3-0 win. In that scenario, it will jump from 86 points to 89 points, while the West Indies will slide from 94 points to 88 points.
The ODI team rankings, unlike the Test rankings, are updated after each match. The ICC ODI predictor function is available here.
In the individual rankings, South Africa players will be in focus since they have four each in the top 10 in the list of batsmen and bowlers.
As far as ICC Player Rankings for ODI Batsmen is concerned, South Africa skipper AB de Villiers is leading the standings, Hashim Amla is third-ranked while Quinton de Kock and Faf du Plessis are in ninth and 10th places, respectively.
In the ICC Player Rankings for ODI Bowlers led by West Indies' Sunil Narine, leg-spinner Imran Tahir is South Africa's leading player at fifth position with the pace duo of Dale Steyn and Kagiso Rabada at joint-seventh place. Morne Morkel completes the team's dominance in individual rankings at ninth slot.
Australia does not have a single batsman in the top 10 but a group of batsmen just a little below with David Warner the best at 13th rank. Aaron Finch (15th), George Bailey (17th) and Steve Smith (18th) are all in the top 20. Pace bowler Mitchell Starc is the only Australian in the top 10 among bowlers, at third position.
Other batsmen looking to better their rankings in upcoming matches will include Joe Root (4th) of England, Mushfiqur Rahim (19th) of Bangladesh, Mohammad Hafeez (23rd) of Pakistan and Ed Joyce (28th) of Ireland.
In the bowlers' list, Bangladesh's Shakib Al Hasan (4th), Pakistan pace bowler Mohammad Irfan (11th) and the Afghanistan pair of Mirwais Ashraf (21st) and Mohammad Nabi (22nd) will be among those eyeing chances to improve their rankings.