4. Monte Irvin (1949-1955)
Wins Above Replacement: 18.9
Irvin played seven seasons with the Giants. The Hall of Famer did not begin his Major League career until the age of 30 because of segregation. Irvin finished third in the voting for MVP in 1951, and despite losing in the World Series to the Yankees, he had an incredible slashline of .458/.500/.542 for an OPS of 1.042 in 24 World Series at-bats.
Irvin would win a World Series ring in 1954 as the team’s primary left fielder.
Overall, he played 653 career games in left field in New York and had a career slashline with the Giants of .296/.389/.477 for an OPS of .866.