Pat Duncan and Jack Spradlin Among Amateur Quarterfinalists at Pebble Beach

Pat Duncan of Rancho Santa Fe, the three-time San Diego City Amateur champion, advanced Wednesday into today’s quarterfinals of the 78th annual California Golf Assn. amateur championship tournament in Pebble Beach by ousting Pleasanton’s Todd Fischer, 3 and 2, in the first round of match play, and Anaheim’s Don Shevorski, 4 and 3, in the second.

One San Diego golfer who did not make it past the first round was Phil Mickelson, the NCAA Division I champion, who lost in the first round to fellow San Diegan Jack Spradlin, 2 and 1.

Spradlin, a former touring pro, then defeated San Francisco’s Sandy McColl, 3 and 1, to reach the quarterfinals.

Vista’s Jerry Michals became the fourth medalist in the past six years to be eliminated in the first or second rounds, losing to Shevorski, 3 and 2.

San Diego’s Keith Sbarbaro lost in the first round to Fischer, 1 up.

Sheri Vincent of San Diego is tied for the lead in girls’ 15-17 division of the Aspen (Colo.) Junior Golf Classic with a two-day total of 153, the same as Tricia Konz of Chandler, Ariz. Both shot 74-79 in the first two rounds.

In the boys’ 15-17 division, Scott Peterson of Rancho Santa Fe is at 157, nine strokes behind the leader. Oceanside’s Joel Young is 17 shots off the lead at 165, and La Jolla’s James Rudolph is at 180.

BASEBALL

A team of college all-stars from around San Diego County will play host to the Taiwanese Olympic baseball team for two games, the first tonight at 7 and the second scheduled for Sunday at noon, both at San Diego State’s Smith Field. There will be no admission charge. The games will serve as a tuneup for the Taiwanese, who will then travel to Texas for five games with the U.S. Olympic team in early July.

TENNIS

Vista’s Laura Richards missed an opportunity to play in the $200,000 Great American Tennis Classic with the likes of Steffi Graf, Pam Shriver and Monica Seles when she dropped straight sets to Noelle Porter, 6-4, 6-1, in the final of a wild-card entry tournament in Escondido.

Porter, of the San Fernando Valley, gained entry into the tournament, which will run July 31-Aug. 6 at the San Diego Tennis and Racquet Club.

BOXING

California super-middleweight champion Antoine “T” Byrd puts his state title on the line at the Del Mar Fair tonight in a scheduled 12-rounder with David Vetter of San Jose.

Byrd, from Los Angeles, is 12-1-1 with two knockouts. Vedder has won five in a row coming in and has a 10-7-2 record with six knockouts.

Preliminary bouts will include Todd McPhee of Mission Beach against Dusty Dyer of Omaha, Campo’s Dion Burgess against Don Coates of San Jose and San Diego’s Carlos Garcia against Adolfo Perez of Tijuana. The fights begin at 6 p.m.