Ken Griffey Sr. was a professional baseball player who played for 19 seasons in the Major League Baseball (MLB). He was born on April 10, 1950, in Donora, Pennsylvania, and grew up in Cincinnati, Ohio. Griffey Sr. was a versatile player who played as an outfielder and first baseman. He was known for his excellent hitting and base-running skills.

Griffey Sr. began his professional baseball career in 1969 when he was drafted by the Cincinnati Reds. He spent several years playing in the minor leagues before making his MLB debut in 1973. He quickly established himself as a reliable player and helped the Reds win the National League pennant in 1975 and 1976. In 1976, he was named an All-Star and helped the Reds win the World Series.

Griffey Sr. continued to play for the Reds until 1981 when he was traded to the New York Yankees. He played for the Yankees for two seasons before being traded to the Atlanta Braves in 1983. He played for the Braves for one season before returning to the Reds in 1984. He played for the Reds until 1988 when he was traded to the Seattle Mariners.

Griffey Sr. played for the Mariners for two seasons before retiring in 1991. During his career, he had a batting average of .296, hit 152 home runs, and had 859 runs batted in. He was also known for his excellent base-running skills, stealing 200 bases during his career.

Griffey Sr. was a two-time All-Star and won two World Series championships with the Reds. He was also a member of the 1980 United States Olympic baseball team that won the gold medal. After retiring from baseball, Griffey Sr. became a coach and worked for several teams, including the Reds, the Mariners, and the Washington Nationals.

Griffey Sr. is also the father of Ken Griffey Jr., who was also a professional baseball player and a member of the Baseball Hall of Fame. The father-son duo played together for the Mariners in 1990 and 1991, making them the first father-son duo to play on the same team in MLB history.

In conclusion, Ken Griffey Sr. was a talented and versatile baseball player who had a successful career in the MLB. He was known for his excellent hitting and base-running skills and helped his teams win two World Series championships. After retiring from baseball, he became a coach and continued to contribute to the sport.