Five tennis players, including Americans Jay Berger and Richey Reneberg, have been banned from the Stockholm Open later this month because they played in South Africa in the past year, tournament director Lars Flink said.

The others are Darren Cahill of Australia, Amos Mansdorf of Israel and Kevin Curren, a South African who has lived in the United States for several years.

The players are on a new United Nations blacklist of athletes who've competed in South Africa after Sept. 1, 1989. The blacklist has been approved by the International Olympic Committee. . . .

Stefan Edberg, Boris Becker and Ivan Lendl, the top three seeds, advanced to the third round of the Australian Indoor championships in Sydney.

Edberg, the Wimbledon champion and top-ranked male player in the world, beat fellow Swede Niclas Kroon, 6-3, 6-2. Becker pulled his game together after a second-set slump and powered to a 6-2, 7-5 victory over Mats Wilander. Lendl also rallied from a second-set slump to defeat Finnish teen-ager Aki Rahunen, 6-0, 3-6, 6-0. Sixth-seeded Michael Chang marked his Australian debut with a 4-6, 6-1, 6-4 victory over fellow American Todd Witsken. . . .

The United States, which faces Australia next month in the Davis Cup final, must travel to Mexico in the opening round of next year's tournament as a result of yesterday's Davis Cup draw in London.

If the U.S. defeats Mexico, it would face Spain or Canada in the second round.