Marcos Ondruska (born 18 December 1972 in Bloemfontein) is a former tennis player from South Africa who turned professional in 1989. He represented his native country at the 1996 Summer Olympics in Atlanta Georgia where he defeated Goran Ivanisevic in the first round before falling to Norway's Christian Ruud. 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?
Athlete