Johannesburg - Kevin Anderson has retained his career-best ranking, despite withdrawing from last week's Aegon Championships at the Queens Club in London.
The SA men's number one remained 23rd in the latest ATP ratings list released on Monday.
Anderson withdrew from the Queens event without hitting a ball, as a precautionary measure in an attempt to shake off a niggling shoulder injury ahead of next week's Wimbledon tournament.
He was hoping to bounce back at this week's Eastbourne International event in England, where he was seeded fifth, as final preparation for the third Grand Slam of the season.
South Africa's top-ranked women's player, Chanelle Scheepers, remained in 68th position in the latest WTA ratings.
Novak Djokovic of Serbia maintained first place in the men's tennis rankings issued Monday by the ATP, ahead of weekend tournament winners Andy Murray and Roger Federer.
Djokovic has 11,830 points. The Briton Murray, who won Queen's on Sunday, has 8,560, and Halle champion Federer of Switzerland 7,740 points as there were no changes in the top 10.
American Serena Williams led the way in an unchanged top 10 in the latest women's tennis rankings issued by the WTA on Monday.
The freshly crowned French Open champion Williams has 13,615 points, second-placed Belarussian Victoria Azarenka 9,625 and number three Maria Sharapova of Russia 9,415 points.
Top 10 as of June 17 (previous ranking in parenthesis):
1. (1) Novak Djokovic, Serbia, 11,830 points
2. (2) Andy Murray, Britain, 8,560
3. (3) Roger Federer, Switzerland, 7,740
4. (4) David Ferrer, Spain, 7,220
5. (5) Rafael Nadal, Spain, 6,895
6. (6) Tomas Berdych, Czech Republic, 4,515
7. (7) Jo-Wilfried Tsonga, France, 4,155
8. (8) Juan Martin del Potro, Argentina, 3,960
9. (9) Richard Gasquet, France, 3,135 10. (10) Stanislas Wawrinka, Switzerland, 2,810
1. (1) Serena Williams, United States, 13,615 points
2. (2) Victoria Azarenka, Belarus, 9,625
3. (3) Maria Sharapova, Russia, 9,415
4. (4) Agnieszka Radwanska, Poland, 6,465
5. (5) Sara Errani, Italy, 5,335
6. (6) Li Na, China, 5,155
7. (7) Angelique Kerber, Germany, 4,915
8. (8) Petra Kvitova, Czech Republic, 4,435
9. (9) Caroline Wozniacki, Denmark, 3,565 10. (10) Maria Kirilenko, Russia, 3,436