In Monte Carlo, Bjorn Borg survived his third qualifying match with a 6-3, 6-1 victory over Pablo Arraya, then was seeded fourth for today's opening of the $300,000 Monte Carlo Grand Prix. Four of the world's top six players, with third-rated Ivan Lendl favored, will compete in the year's first major clay court tournament.

Top-ranked John McEnroe, who is not fond of clay surfaces, did not enter, and Jimmy Connors, ranked second, announced his withdrawal last week because of a foot injury. Guillermo Vilas and Jose-Luis Clerc are the among other entrants. Vilas is ranked fourth and Clerc fifth.

Borg had to go through qualifying because he has refused to play at least 10 Grand Prix events this year. The six-time French Open and five-time Wimbledon champion plays Fernando Luna today.

At Zurich, in a tournament dominated by underdogs, unseeded Bill Scanlon, 26, upset fellow American Vitas Gerulaitis, 7-5, 7-6, 1-6, 0-6, 6-4, to win a $300,000 World Championship Tennis event, earning him a place in the WCT finals beginning in his home town of Dallas April 20 . . . In Frankfurt, Lendl defeated Peter McNamara, 6-2, 6-2, in the final of a $250,000 Grand Prix tournament . . . At Nice, France, Balazs Taroczy won a $75,000 Grand Prix by beating Yannick Noah, 6-2, 3-6, 13-11 . . . In Palm Spring Gardens, Fla., top-ranked Chris Evert Lloyd defeated Andrea Jaeger, 6-1, 7-5, in a windy setting and won the four-woman, $200,000 Citizen Cup. She won $80,000 and a $9,000 watch.