Fred Pfeffer was a professional baseball player who played in the National League and the American Association from 1882 to 1897. He was a versatile player who could play any position on the field, but was most known for his defensive skills at second base.

Pfeffer began his career with the Chicago White Stockings in 1882 and played for them until 1887. During his time with the White Stockings, he was part of the team that won the 1885 National League pennant. He was also a part of the team that won the 1886 World Series.

In 1888, Pfeffer joined the New York Giants and played for them until 1890. He then moved to the Louisville Colonels in 1891 and played for them until 1893. He then moved to the St. Louis Browns in 1894 and played for them until 1897.

Throughout his career, Pfeffer was known for his defensive skills and his ability to hit for average. He was also known for his leadership skills and was often referred to as the "captain" of the team. He was also known for his hustle and determination on the field.

Pfeffer was inducted into the Baseball Hall of Fame in 1971. He was known as one of the best defensive players of his era and was an important part of the teams he played for. He was also known for his leadership skills and his ability to hit for average. He was a versatile player who could play any position on the field and was an important part of the teams he played for.