- Mike McCormick (1956-1962, 67-70)
Wins Above Replacement: 14.8
McCormick was a member of the Giants during a significant period in the organization’s history. He played his first two seasons in New York before the team moved out west following the 1957 season. McCormick’s career really took off once the team moved to San Francisco. His best season, according to WAR, was in 1960 as a 21-year-old. His WAR was 5.1, and he went 15-12 with a 2.70 ERA, making the all-star team. He also made the all-star team the following year in 1961, and was ultimately traded to the Baltimore Orioles following the 1962 season.
McCormick reunited with the San Francisco Giants in 1967, and put together one of the best seasons of his career. In his Giant reunion, the lefty went 22-10 with a 2.85 ERA, and 4.4 WAR. He won the Cy Young award that season, the first in team history.
In eleven seasons overall with the Giants, McCormick went 107-96 with a 3.68 ERA. He had two all-star appearances and won the Cy Young award one time.