Although the Pirates were still struggling in the standings , they were forming a good nucleus of ballplayers .
Left fielder Lee Walls was traded to the Chicago Cubs at the beginning of the 1957 season , and Skinner replaced him against right - handed starters .
Although the Pirates were still struggling in the standings , starters were forming a good nucleus of ballplayers .
Left fielder Lee Walls was traded to the Chicago Cubs at the beginning of the 1957 season , and Skinner replaced him against right - handed starters .