Ryan Harrison (born May 7, 1992) is an American professional tennis player. Harrison has won one career ATP title in singles at the 2017 Memphis Open to go along with four in doubles, including the 2017 French Open. Before turning 16, Harrison was regarded a prodigy after cracking the top 10 in the junior rankings and becoming one of the youngest players ever to win an ATP match. Although he broke through onto the ATP level by the age of 20, Harrison then fell out of the top 100 for several years. He since returned to the top 100 in 2016 after a strong second half of the season that included multiple wins over opponents ranked in the top 20 and his first career appearance in the round of 32 at a Grand Slam. Harrison built on that momentum in 2017 to reach a top-40 career-high ranking in singles after winning his first career ATP title.