SPECTATOR SPORTS: FRIDAY 20

* COLLEGE BASEBALL: Stanford at UCLA, 1 p.m.; Arizona at USC, 7 p.m.; Tulane at Long Beach State, 7 p.m.; Nevada Las Vegas at Cal State Fullerton, 7 p.m.

* WOMEN’S COLLEGE BASKETBALL: Gonzaga at Pepperdine, 7 p.m.; Portland at Loyola Marymount, 7 p.m.; UC Irvine at Long Beach State, 7:30 p.m.

* HORSE RACING: Thoroughbreds, Santa Anita, 1 p.m.; harness racing, Los Alamitos, 6:20 p.m.

* COLLEGE SWIMMING AND DIVING: Big West championships, UC Irvine, 10:30 a.m. and 6 p.m.

* MEN’S COLLEGE VOLLEYBALL: Cal State San Bernardino at UCLA, 1 p.m.

SPECTATOR SPORTS: SATURDAY 21

* AUTO RACING: SCRA sprint cars, Perris Auto Speedway, 7 p.m.

* COLLEGE BASEBALL: Stanford at UCLA, 1 p.m.; Arizona at USC, 1 p.m.; Nevada Las Vegas at Cal State Fullerton, 1 p.m.; Tulane at Long Beach State, 7 p.m.

* PRO BASKETBALL: ABL playoffs, Colorado vs. StingRays at Arrowhead Pond of Anaheim, 4 p.m. Charlotte at Clippers, Sports Arena, 7:30 p.m.

* MEN’S COLLEGE BASKETBALL: Long Beach State at Cal State Fullerton, 7 p.m.; Pacific at UC Irvine, 7 p.m.

* WOMEN’S COLLEGE BASKETBALL: USC at UCLA, 2 p.m.; Portland at Pepperdine, 5 p.m.; Gonzaga at Loyola Marymount, 7 p.m.

* MINOR LEAGUE HOCKEY: San Antonio at Ice Dogs, Long Beach Arena, 7 p.m.

* HORSE RACING: Thoroughbreds, Santa Anita, featuring $75,000 San Marino Handicap and $100,000 Boo La Boo Stakes, first post 12:30 p.m.; harness racing, Los Alamitos, 6:20 p.m.

* KART RACING: Los Angeles Kart Club, Saugus Speedway, 10 a.m.

* COLLEGE SWIMMING AND DIVING: Big West championships, UC Irvine, 10:30 a.m. and

6 p.m.

* MEN’S COLLEGE TENNIS: Oregon at UC Irvine, noon.

* WOMEN’S COLLEGE TENNIS: San Diego State at USC, 1:30 p.m.

* MEN’S COLLEGE VOLLEYBALL: UC Santa Barbara at UC Irvine, 4 p.m.; Cal State Northridge at UCLA, 7 p.m.

* WOMEN’S COLLEGE WATER POLO: UC Santa Barbara at USC, noon.

PARTICIPATION SPORTS

* FOOTBALL: NFL Experience and Air It Out will be held today and tomorrow at Pierce College from 8 a.m.-5 p.m. Details: (818) 344-6195, Ext. 102.

UN

SPECTATOR SPORTS: SUNDAY 22

* COLLEGE BASEBALL: Stanford at UCLA, 1 p.m.; Arizona at USC, 1 p.m.; Tulane at Long Beach State, 1 p.m.; Nevada Las Vegas at Cal State Fullerton, 1 p.m.

* WOMEN’S COLLEGE BASKETBALL: Cal State Fullerton at Long Beach State, 1 p.m.

* WOMEN’S COLLEGE GYMNASTICS: Cal State Fullerton, Penn State and Oregon State at UCLA, 2 p.m.

* MINOR LEAGUE HOCKEY: Las Vegas at Ice Dogs, Long Beach Arena, 4 p.m.

* HORSE RACING: Thoroughbreds, Santa Anita, featuring $125,000 Las Flores Handicap, first post 12:30 p.m.; harness racing, Los Alamitos, 6:20 p.m.

* MEN’S COLLEGE TENNIS: Oregon at Loyola Marymount, 11 a.m.

PARTICIPATION SPORTS

* BASKETBALL: The Los Angeles Sparks will host a basketball clinic and 2-Ball competition for girls 8-18 at Oshman’s SuperSports USA in Irvine. Details: (714) 450-0211.

About This Listing

On Fridays The Times publishes a sampling of Southland participatory events on a space-available basis. To submit your event, send a fax with the date, location and time of competition to (213) 237-7876 or write to Sports Weekend, Sports Department, Los Angeles Times, Times Mirror Square, Los Angeles, CA, 90053. Only events with date-of-competition registration will be accepted.