7. Bob Brenly (1981-1989)
Wins Above Replacement: 12.1
Brenly played nine seasons with the Giants. His went to the All-Star game in 1984, where he had a slashline of .291/.352/.464 for an OPS of .816. He finished 1984 with 20 home runs, 80 runs batted in and finished 21st in the MVP voting. His presence in the locker room was felt during the team’s resurgence in the late 1980’s, when the team finally made it back to the post-season and ultimately the World Series in 1987 and 1989, respectively.
Overall, he played 823 career games at catcher in San Francisco and had a career slashline with the Giants of .250/.333/.408 for an OPS of .740.