[1][3] Tan made her major main-draw doubles debut at the 2017 French Open, after having been handed a wildcard to enter the tournament; she and her partner Audrey Albié lost their first-round match to the unseeded pair of Pauline Parmentier and Yanina Wickmayer.

[4] Tan made her major singles debut at the 2018 US Open, where she entered the main draw on a wildcard, losing her first-round match to Eugenie Bouchard, 3–6, 1–6.

[4] Tan made her main-draw singles debut on the WTA Challenger Tour in January 2019 in Newport Beach, where she won her first- and second-round matches (against Katharina Gerlach and Sachia Vickery, respectively), before losing to Taylor Townsend.

[4] In May 2019, Tan entered a WTA Tour singles main draw for the first time in her career in Strasbourg thanks to a wildcard, but lost her first-round match to No.

[10] Only main-draw results in WTA Tour, Grand Slam tournaments, Billie Jean King Cup, and Olympic Games are included in win/loss records.