Ivan Lendl, seeking his first Australian Open singles title, and Martina Navratilova, going after her fourth, made quick work of second-round foes today.

Lendl, 27, thrashed American Matt Anger, 6-0, 6-1, 6-1, in 1 1/2 hours to power his way into the third round of the $1.9 million Australian Open in Melbourne.

Navratilova, who has won the last two Grand Slam singles titles, took 35 minutes to oust Anna-Maria Fernandez, 6-1, 6-0.

Third-seeded Chris Evert also had an easy time, beating Beverley Bowes, 6-0, 6-1.

The day's biggest upset was by Eva Krapl of Switzerland, a right-hander ranked 120th in the world. She ousted seventh-seeded Zina Garrison of Houston 3-6, 6-3, 6-4.

Last night, matches were played under the revolutionary retractable center court roof for the first time. Stefan Edberg opened the defense of his singles title with a 4-6, 6-2, 6-2, 7-5 victory over American Marty Davis; top-seeded Steffi Graf and Americans Pam Shriver (seeded fourth), Lori McNeil and Heather Ludloff also advanced, as did defending champion Hana Mandlikova, the fifth seed, and Helena Sukova, the sixth seed.

Swedes had a field day in men's play, with third-seeded Mats Wilander, Anders Jarryd (6), Peter Lundgren (11) and Jonas B. Svensson (14) advancing.