Bolin's tenure with the Giants was characterized by his adaptability on the mound. He served both as a starter and a reliever, showcasing his ability to handle various pitching roles. In 1962, Bolin contributed to the Giants' successful season, which culminated in a National League pennant. Although he did not play in the World Series that year, his regular-season performance helped the team reach that stage.
Throughout the 1960s, Bolin's role with the Giants fluctuated between starting and relieving, depending on the team's needs. His best season came in 1968 when he posted a 10-5 record with a remarkable 1.99 ERA, one of the lowest in the league that year. This performance underscored his capability to excel in a starting role, even amidst a pitching staff that included stars like Juan Marichal and Gaylord Perry.
In 1970, Bolin was traded to the Milwaukee Brewers, a team that had just relocated from Seattle. His time with the Brewers was brief but notable, as he continued to demonstrate his skills as a reliable pitcher. The following year, Bolin joined the Boston Red Sox, where he spent the final years of his major league career. With the Red Sox, he primarily served as a reliever, adding depth to their bullpen.
Bolin retired from professional baseball after the 1973 season. Over his career, he accumulated a win-loss record of 88-75, with an ERA of 3.40 and 1,175 strikeouts.
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