Calvin John Eldred (born November 24 1967 in Cedar Rapids Iowa raised in Urbana Iowa) is a former Major League Baseball pitcher who played for 14 seasons from 1991 to 2005. When he first entered professional baseball he played for the Milwaukee Brewers. Later he played for the Chicago White Sox and finally ended his career by playing with the St. Louis Cardinals. He pitched in relief in the World Series with the St. Louis Cardinals in 2004. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Athlete