TODAY'S GAMES

Men's baseball at Cornell (2)

Men's tennis at Cornell

YESTERDAY'S RESULTS

Women's lacrosse 22, Dartmouth 8

Men's tennis 8, Princeton 1

NHL

Boston 5, New York Islanders 1 (Islanders lead best-of-seven series, 3-2. Game 6 is Saturday at New York)

Major League Baseball

NL

St. Louis 4, San Diego 3

Atlanta 6, Houston 3

AL

Cleveland 7, Minnesota 5

Tennis

Attacking the net at every chance yesterday, French Davis Cup star Henri Leconte shocked defending champion Ivan Lendl of Czechoslovakia yesterday to join second-seeded John McEnroe in the quarterfinals of the $500,000 Tournament of Champions at the famed West Side Tennis Club in New York.

Leconte needed just 62 minutes to oust Lendl, the top seed in thsi unique championsionly field at Forest Hill, 6-2, 6-3.

McEnroe breezed to victory in 67 minutes, crushing Jan Gunnarson of Sweden, 6-1, 6-2. The New York left-hander is going after his first title on the Har-Tru courts at Forest Hills, his worst surface.

In the day's second upset, unseeded Brad Gilbert eliminated fourth-seeded Kevin Curren of South Africa 6-4, 6-4. Gilbert, who will face No. 5 Vitas Gerulaitis in the quarterfinals, broke Curren's service in the 10th games of both sets to capture the victory.

Also advancing into the round of 16 were third-aceded Guillermo Vilas of Argentina, No. 8 Paul McNamee of Australia, No.9 Johan Krick and N. 10 Tomas Smid of Crechoslovakia.