The contracts of two members of the 1988 Salt Lake Trapper baseball team have been purchased from the club by the San Francisco Giants. Third baseman Kerry Shaw and catcher/designated hitter Martin Peralta have been assigned to the Giants' Class A Clinton (Iowa) farm team for the 1989 Midwest League season. Shaw hit .353 through 54 games with the Trappers, and Peralta, in 47 games, hit .255.