Defending champion John McEnroe will face Peter McNamara in the opening round of the men's singles in next week's All England Tennis Championships.

In the women's event, defending champion Martina Navratilova will face Lisa Bonder, and Chris Evert Lloyd -- seeded No. 1 along with Navratilova -- will meet Mary Lou Piatek. (For Arthur Ashe's assessment of Wimbledon, see Page D8.)

McNamara, a two-time Wimbledon doubles champion, damaged knee ligaments two years ago while ranked seventh in the world. After surgery, he did not play again until last December.

Ivan Lendl, bidding for his second Grand Slam title and his first Wimbledon crown, will play Mel Purcell. Jimmy Connors, seeded third, will face Stefan Simonsson. No. 4 Mats Wilander, winner of this year's French Open, will face Slobodan Zivojinovic, a big server whose game is well suited to grass.

In the women's singles, Hana Mandlikova, the No. 3 seed, has an opening match against Iva Budarova. Gabriela Sabatini, 15, the youngest seed, will face Amanda Brown . . .

Sabatini and Carling Bassett were knocked out of the $150,000 Eastbourne women's grass court championships in second-round matches.

Bassett, 17, the No. 9 seed, was beaten, 6-3, 6-0, by Dianne Fromholtz Balestrat. Sabatini, the No. 11 seed, lost to Pascale Paradis, 6-7, 6-2, 6-3.

Navratilova won twice, completing a 6-4, 6-4 defeat of Betsy Nagelsen, then coming back against Lori McNeil, 3-6, 6-2, 6-0. Manuela Maleeva, the No. 4 seed at Wimbledon, defeated her sister, Katerina Maleeva, 6-1, 6-3.