Arnie Portocarrero

After three losing seasons plagued by wildness, including a 9-18 record in his first season, Portocarrero found his control in 1957 but nonetheless went 4-9 for the seventh-place Athletics. Traded to the Orioles for Buddy Daley, Portocarrero had his best season in 1958, going 15-11 with a 3.25 ERA.