Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Valentini Grammatikopoulou - Valentini Grammatikopoulou (born 9 February 1997 in Kilkis) is a Greek tennis player.Grammatikopoulou has won three singles and one doubles title on the ITF tour in her career. On 4 November 2013 she reached her best singles ranking of world number 520. On 28 April 2014 she peaked at world number 799 in the doubles rankings.Playing for Greece at the Fed Cup Grammatikopoulou has a winloss record of 41.
The answer to this question is:
Athlete