For the first time, men's professional tennis has professional chair umpires, to travel the world circuit full-time.

Richard G. Kaufman and Jeremy Shales get the assignments by the Men's International Professional Tennis Council. Kaufman, 34, is a native of Buffalo and resides in New York City. Englishman Shales, 42, formerly worked for the Bank of England . . .

John McEnroe and Jimmy Connors in singles and Ken Flach-Robert Seguso in doubles won the United States a 3-0 victory over West Germany, advancing to a title defense today against Czechoslovakia in the final of the $500,000 World Team Tennis Cup in Du sseldorf, West Germany.

McEnroe committed nine double faults in a 7-5, 7-6 (7-4) struggle past Hansjoerg Schwaier. Connors had few problems against Wolfgang Popp, beating his first-round opponent in next week's French Open, 6-1, 6-3.

Today, it will be the world's No. 1 and 2 players matched, McEnroe versus Ivan Lendl, and No. 3, Connors, against Miloslav Mecir.

Schwaier, No. 49 worldwide, took a 4-1 lead in the second set, but the next game was the match's turning point as McEnroe hit winners on each of Schwaier's serves, breaking at love . . .

At Lugano, Switzerland, top seed Manuela Maleeva defeated Sylvia Hanika, 6-1, 7-5, and Bonnie Gadusek beat Helena Sukova, 6-4, 1-6, 6-4, to make the final of the $100,000 European Women's Open . . .

In the NCAA championships on their home courts at Athens, Ga., top-ranked Mikael Pernfors and seventh-seeded George Bezecny, teammates and roommates at team champion University of Georgia, advanced to today's individual final.

Defending champion Pernfors defeated third-seeded Jim Grubb of Stanford, 7-5, 6-4. Bezecny upset fourth-seeded Todd Witsken of Southern California, 6-4, 6-4. The last time teammates met in the NCAA final was 1981, Stanford's Tim Mayotte beating Jimmy Gurfein.