Carson Branstine

Branstine was born in Irvine, California to an American father, Bruce, and a Canadian mother, Carol Freeman, from Toronto. She has two older sisters, Cassidy and Constance, both of whom play collegiate tennis. Her cousin Freddie Freeman is a professional baseball first baseman for the Atlanta Braves of Major League Baseball (MLB). Branstine accepted an offer from Tennis Canada to train at the National Training Centre in Montreal, starting in October 2016.

Branstine played her first junior tournament in November 2014 at the ITF G4 in Atlanta and won the doubles title. Two weeks later at the G4 in Boca Raton, she captured her first junior singles title and also won in doubles. In March 2015, she played her first professional tournament, losing to Karolína Stuchlá in the first round of the 10k in Gainesville, Florida. In June 2015, she won the doubles title at the G4 in Haverford, Pennsylvania. Branstine qualified for her first junior Grand Slam main draw at the US Open in September, but lost to Evgeniya Levashova in the opening round. She also reached the second round in doubles.

Branstine's win-loss record (0–1, 0%) against players who were ranked world No. 100 or higher when played is as follows:

Carson Branstine (born September 9, 2000) is a Canadian-American tennis player. She reached a career high WTA singles ranking of No. 953 on April 30, 2018 and a career high ITF junior ranking of No. 4 on July 17, 2017. She won the 2017 Australian Open and French Open junior doubles titles with Bianca Andreescu. Branstine represented the United States from 2014 to February 2017, but has started representing Canada, the birth country of her mother, since March 2017.