Alan "Lefty" Thomas Clarke (March 8, 1896 – March 11, 1975)
was an American professional baseball player who played one game for the Cincinnati Reds in 1921.
He recorded one strike out while surrendering 7 runs (3 earned) on seven hits and two walks.
He was born in Clarksville, Maryland and died at the age of 79 in Cheverly, Maryland.