After 15 seasons with the Braves, including playing for them while they were the Boston Braves and Milwaukee Braves, Mathews was traded to the Houston Astros in December of 1966. Replacing him at third the next year was Clete Boyer, who was acquired by the Braves from the New York Yankees. Boyer played five seasons with Atlanta, amassing a .244 average, hitting 66 home runs, and driving in 251 runs.
