At the Portugal Open, she won her second title of the year with Kristina Mladenovic, defeating Darija Jurak and Katalin Marosi in straight sets.

[6] Early in the year, Chan won the title at the Thailand Open with her sister, defeating Shuko Aoyama and Tamarine Tanasugarn in three sets.

Playing with Monica Niculescu, who was also making her first appearance in a Grand Slam tournament final, they were overwhelmed 6–0, 6–0 by the pair of Ekaterina Makarova and Elena Vesnina.

[15] At the US Open, playing with New Zealander Michael Venus, she reached the mixed doubles final against top seeds Martina Hingis and Jamie Murray, losing in a deciding champions tiebreak.

[17] Chan won her 20th title at the Hobart International, partnering with Giuliana Olmos, defeating Guo Hanyu and Jiang Xinyu in the final.

[19] Chan and Kudermetova qualified for the WTA Finals and reached the semifinals after compiling a record of two wins and one loss in the group stages.

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