2011: WTA Tour debut Harrison made her
WTA Tour main-draw debut at the
2011 Cellular South Cup, after receiving a wildcard for the singles competition.
2022: Grand Slam debut Harrison won her first doubles title at the
Monterrey Open, partnering compatriot
Sabrina Santamaria and defeating
Han Xinyun and
Yana Sizikova in the final. She made her Grand Slam tournament debut at the
French Open in doubles. Harrison qualified to make her singles debut at the
Wimbledon, defeating
Arantxa Rus in the first round then losing her next match to
Ajla Tomljanovic. She also qualified for the main draw at the
US Open, losing to sixth seed
Aryna Sabalenka in the first round. ==Performance timelines==