She attended the University of North Carolina for her freshman and sophomore years (2013–15), and won the singles NCAA Championship in 2015.

[11] In both her freshman and her sophomore seasons, she was named Atlantic Coast Conference (ACC) Player of the Year and ITA All American.

[5][10] Loeb won her biggest title to date at the 2015 Stockton Challenger in the doubles event, partnering Sanaz Marand.

She received a wildcard for the 2015 US Open and played fourth seed Caroline Wozniacki in the first round, losing in straight sets.

[citation needed] She reached her first WTA 125 singles final at the 2021 LTP Women's Open, losing to Varvara Lepchenko in three sets.