Roy Sievers (b. 1926) is the 1949 Rookie of the Year and a 4-time All Star who played from 1949 to 1965. He led thre league in home runs in 1957 with 42. He played for the Browns, Senators, White Sox and Phillies.
Sievers was the 18th player to hit 300 home runs in his career, but was also the first player who hit 300 home runs to not be elected into the Hall of Fame. Sievers finished his career with 318 homers, 1,147 RBIs and an average of .267.