Grover Cleveland "Slim" Lowdermilk (January 15, 1885 - March 31, 1968) was a professional baseball pitcher, with a career that spanned several years, including nine years with the majors (1909-1918), and a successful career with the minors before and after.
Lowdermilk started the 1915 season for the Browns, but was traded to the Detroit Tigers before the end of the season. He served a brief stint with the Cleveland Indians in 1916 before heading back to the to the Browns from 1917 to the middle of 1919. His career ended with the Chicago White Sox, where he pitched one inning in the 1919 World Series. During his career, he played with and against several more legendary players.