Johnny Blanchard 1955 - Atlanta Braves
*** Blanchard closed out his big league career with the Milwaukee Braves in 1965... the Braves moved to Atlanta for the 1966 season. Although the reverse of this photo reads "May 1965," his bb-ref
Bullpen page infers that this image would be from a 1968 spring training comeback attempt.
***edit- unless the cap is airbrushed...