Tim Sebastian (born 17 January 1984 in Leipzig) is a German football defender who plays for RB Leipzig.He extended his contract at RB Leipzig on 4 April 2014 for another year until 2015 with a possibility for another year of extension. 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?
The answer to this question is:
Athlete