Norm Siebern's eighth-inning home run combined with Bob Turley's two-hit pitching yesterday to enable the New York Yankees to come up with a 3-2 victory over Boston's Red Sox in their twice-postponed opener. The only hits for the Red Sox were a double by Pete Runnels in the seventh inning and a single by Vic Wertz in the ninth.

After walking leadoff man Don Buddin, Turley retired 17 men in a row until he walked Buddin again in the seventh. Yesterday's win puts the Yankees in fourth place.

Led by relief pitchers Rudy Arias and Bob Shaw, Chicago's White Sox yesterday took a new grip on their league lead by defeating the Tigers, 5 to 3.

In the National League, the San Francisco Giants trounced the Cardinals, 6 to 3, to take a clean sweep of the three game series and first place in the league. The Los Angeles Dodgers, sparked by Don Demeter's two-run homer in the seventh inning, defeated Chicago's Clubs, 5 to 3.