WEEKEND SPORTS : ARMCHAIR COMPETITORS FACE 3 1/2-HOUR MARATHON

Los Angeles’ first marathon will get extensive live coverage Sunday on KCOP Channel 13. Beginning with a pre-race program at 8:30 a.m., the station will follow the marathon from its start at 9 a.m. continuously until noon. The winner is expected to cross the finish line about 11:15 a.m.

Another first arrives Sunday--the first pre-season Dodger telecast on KTTV Channel 11. The Dodgers will be playing the Houston Astros, with Fernando Valenzuela pitching and the first-string broadcasting team of Vin Scully, Ross Porter and Jerry Doggett calling the action. Game time is 10:30 a.m.

There’ll be more about the Dodgers at 8:30 Sunday night when Channel 11 profiles manager Tommy Lasorda.

Here are other weekend sports telecasts.

TODAY

Tennis: U.S. Women’s Indoor Championships, 9 a.m. (2)(8).

College Basketball: ACC tournament semifinals, 10:30 a.m. ESPN . . . SEC tournament final, 11:30 a.m. (4)(36)(39) . . . UCLA vs. Oregon, 1 p.m. (2)(8) . . . PCAA men’s tournament final, 2 p.m. (56) . . . USC vs. Oregon State, 3 p.m. (2)(51) . . . Big East tournament final, 4 p.m. ESPN . . . WAC tournament final, 6 p.m. ESPN.

Golf: Doral Eastern Open, 11 a.m. (2) . . . Women’s Kemper Open, 1:30 p.m. (4)(36)(39).

Soccer: England vs. Northern Ireland, World Cup qualifying, noon (34).

Bowling: True Value Open, 3 p.m. (7)(3)(10)(42).

SUNDAY

Pre-Season Baseball: St. Louis vs. New York, 10 a.m. WOR . . . Dodgers vs. Astros, 10:30 a.m. (11) . . . Padres vs. Angels, noon (39) . . . Chicago vs. Milwaukee, noon WGN.

College Basketball: ACC tournament final, 10 a.m. (4)(36)(39) . . . SWC tournament final, 11 a.m. ESPN . . . NCAA tournament pairings, 3 p.m. (2) . . . Arizona vs. Arizona State, 3:30 p.m. (2).

Pro Basketball: Indiana vs. Philadelphia, 10 a.m. (2) . . . Los Angeles Lakers vs. Seattle, 7 p.m. (9).

Golf: Doral Eastern Open, 12:30 p.m. (2) . . . Women’s Kemper Open, 1 p.m. (4)(36), 2:30 p.m. (39).