By the end of the year, she already was the singles title holder of three $10k events, including Colombo, Jakarta, and Taipei.

After the US Open, she played two qualifying events in Beijing and Seoul, but failed to enter the main draw.

Her breakthrough and first tour-level win came at the Tokyo Open, where she reached the semifinal stage by defeating local favourite and two-time winner Ai Sugiyama.

Together with regular partner Chuang, she also won the doubles titles in Sydney, Gosford, Fukuoka, Kurume, and Kaohsiung.

She entered the main draws of the Australian Open, at Pattaya, Bangalore, and Indian Wells, but failed to advance past the first round.

In Miami, she reached the second round by defeating Nuria Llagostera Vives, before losing to top seed Maria Sharapova.

To improve her singles game, Chan entered three ITF pro events after Charleston and won all three of them.

In their Indian Wells debut, Chan and Chuang again stormed into the final with back-to-back wins over 2006 Australian Open and Wimbledon champs Yan Zi and Zheng Jie in the quarterfinals, and 2006 US Open champions Vera Zvonareva and Nathalie Dechy in the semifinals.

However, they lost the final to 2006 Roland Garros champions Lisa Raymond and Samantha Stosur in straight sets.

Had they won the final match, they would have defeated every 2006 Grand Slam champion team in one single event.

At the German Open in Berlin, Chan became the last player whom top-ranked Justine Henin ever defeated before she retired the following week.

She delighted home crowds by sweeping both the singles and doubles (with Chuang) titles in the Taipei $100k tournament.

On the doubles court, Chan shocked the world-number-one team of Cara Black and Liezel Huber with Monica Niculescu, in the quarterfinals of the Premier-level tournament in Stanford.

They were defeated by Serena and Venus Williams in the final after taking out another seeded pair, Maria Kirilenko and Sorana Cîrstea.

In March, Chan won at Indian Wells with Hingis, as they defeated Lucie Hradecká and Kateřina Siniaková in the final.

[11] The team added titles in Madrid and Rome with final victories over Tímea Babos and Andrea Hlaváčková[12] and Ekaterina Makarova and Elena Vesnina, respectively.

In the Summer Universiade in August, Chan teamed up with her sister Hao-ching to a gold medal in the women's doubles.

[14][15] Chan and Hingis won their first Grand Slam women's doubles title together at the US Open when they defeated Hradecká and Siniaková in straight sets.

That means they won three out of the four Premier Mandatory events in 2017, only missing out on the Miami Open where they lost in the semifinals.

After a Premier title in San Jose (with Květa Peschke) and a Premier-5 final in Montreal (with Ekaterina Makarova), Chan returned to the No.-1 ranking in doubles only for one week before dropping out of top ten later in the season.

They reached the final of the Brisbane International, and followed that up with wins in the Hobart and Doha championships and a run to the quarterfinals in the Australian Open.

[18] In March, they reached the semifinals at Indian Wells,[18] in June, they won the Eastbourne International,[19] and in September, they won the Pan Pacific Open, beating sisters Hsieh Su-wei and Hsieh Yu-chieh in the final, to record their 14th WTA tournament win together.

[25] She took part in the women's doubles at the Paris Olympics alongside her sister, Chan Hao-ching, but they lost in the first round to Barbora Krejčíková and Kateřina Siniaková.

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 and career statistics.