Stefan Edberg arrived in Australia on Monday and received the news that he had lost his No. 1 tennis ranking to Jim Courier without either player hitting a ball.
Edberg also slipped below Pete Sampras, who has achieved his highest ranking ever at No. 2.
Edberg is in Australia for the Sydney Indoor championships, where he is the defending champion.
This is the fifth time the No. 1 spot has changed hands this year in rankings that are calculated weekly based on results over the previous year. This week's Australian Indoor falls a week later than last year on the ATP tour calendar, so the 240 computer points Edberg earned here in 1991 drop out.
By contrast, Courier and Sampras had few points to lose. Neither is playing this week, but Edberg is unlikely to make up any ground since he is defending the 304 points he won by taking the Tokyo Indoor title a week after the Sydney event.
Edberg had reclaimed the No. 1 spot from Courier when he beat Sampras to win the U.S. Open title last month.
Edberg was philosophical about the ranking drop.
"That's the way it goes," he said. "There's nothing I can do about it.
"I still have a chance to get back to No. 1 by the end of the year and that's important to me. I don't know if I can do it, but I'd like to _ no one remembers who was No. 1 on October something."
First-round results at the Sydney Indoor included Gianluca Pozzi's 6-2, 6-2 victory over Niclas Kroon, a 6-3, 6-2 win by Richard Fromberg over Chris Pridham, and David Pate's 7-6 (7-5), 3-6, 7-6 (7-5) victory over Bryan Shelton.
Davis Cup: The surface for the Davis Cup final between the United States and Switzerland Dec. 4-6 in Fort Worth, Texas, will be an indoor hardcourt.
"It is like an indoor version of the U.S. Open court," U.S. captain Tom Gorman said. "It will be a medium to medium-slow court. It was done with our players in mind."
Toulouse Open: Third-seeded Brad Gilbert defeated Christan Miniussi 3-6, 6-4, 6-1 and advanced to the second round in France.
Athens International: Jordi Arrese and Magnus Gustafsson advanced to the second round in Greece.