2009–2013 In July 2009, Chan won his first senior international title with
Lim Khim Wah at the
Thailand Open by defeating compatriots
Choong Tan Fook and
Lee Wan Wah in the final. In October 2009, Chan and
Goh Liu Ying reached their first international tournament final at the
Vietnam Open but were defeated by
Flandy Limpele and
Cheng Wen-hsing. In April 2010, they became the country's first ever mixed doubles champions in a top-flight international tournament after winning the
Badminton Asia Championships by defeating South Korean's
Yoo Yeon-seong and
Kim Min-jung in the final. At the
2010 Commonwealth Games, he won the gold medal in mixed team event. In the mixed doubles event, Chan and Goh lost the bronze medal match to
Chayut Triyachart and
Yao Lei. In May 2011, they finished as runner-ups to Indonesian pair,
Tontowi Ahmad and
Lilyana Natsir in the final of the
Malaysia Open. In November 2011, they won the
Bitburger Open after defeating Denmark's
Thomas Laybourn and
Kamilla Rytter Juhl. In March 2012, they reached the semi-finals of the
All England Open before losing to the eventual champions, Tontowi Ahmad and Lilyana Natsir. In the following month, they became the runner-up of the
Australia Open after losing to Chinese Taipei's
Chen Hung-Ling and
Cheng Wen-Hsing in the final. They gained their first ever
Malaysia Open crown by beating Indonesian pair,
Irfan Fadhilah and
Weni Anggraini. Chan and Goh represented Malaysia at the
2012 London Olympics. They were the first ever Malaysian mixed doubles pair to qualify for the Olympic Games. They lost all three group matches and failed to progress to quarter-finals in their Olympics debut. In September 2012, Chan and Goh won their first
Super Series title at the
Japan Open by beating
Muhammad Rijal and Lilyana Natsir. In November 2012, they reached the final of the
China Open but were defeated by top seed,
Xu Chen and
Ma Jin in straight sets. In January 2013, Chan and Goh became the runner-ups of the
Malaysia Open after losing to
Joachim Fischer Nielsen and
Christinna Pedersen in the final.
2014–2017 In January 2014,
Lai Pei Jing was chosen as his new partner while Goh went on hiatus to recover from knee surgery. In their first international competition together, Chan and Lai reached the final of
Austrian International before losing to
Robert Mateusiak and
Agnieszka Wojtkowska. In April 2014, Chan briefly resumed his partnership with Goh at the
Singapore Open. Chan resumed his partnership with Lai after Goh decided to undergo surgery on both her knees and being out of action for the rest of the year. At the
2014 Commonwealth Games, Chan won the gold medal in the
mixed team event. In the individual
mixed doubles event, Chan and Lai lost the bronze medal match to
Robert Blair and
Imogen Bankier. Chan resumed his partnership with Goh in 2015 where they won three titles that year: the Polish Open,
Russian Open and the
Mexico Open. At the
2015 SEA Games, they won a silver medal after losing to Indonesia's
Praveen Jordan and
Debby Susanto in the mixed doubles final. In February 2016, they were runner-ups of the inaugural edition of
Thailand Masters after losing to unseeded Chinese pair,
Zheng Siwei and
Chen Qingchen in the final. In March 2016, they clinched their first title of the year by winning the
New Zealand Open. In April 2016, they lost to Indonesian pair, Tontowi Ahmad and Lilyana Natsir in the final of the
Malaysia Open. Goh and Chan qualified for
2016 Summer Olympics in
Rio de Janeiro. They won their first two group stage matches but lost the third to Indonesian pair, Tontowi Ahmad and Liliyana Natsir. They finished as group runner-ups and progress to quarter finals round. In the quarter finals, they beat Poland's
Robert Mateusiak and
Nadieżda Zięba. In the semi-finals, they beat China's
Xu Chen and
Ma Jin in straight sets to reach the final. In the final, they had to settle for silver medal after they were beaten by Tontowi Ahmad and Liliyana Natsir for the second time in the tournament. Despite the fact that Goh and Chan lost in the final, they had created history by being the first Malaysian mixed doubles pair to claim an Olympic medal. In March 2017, Chan and Goh became the first Malaysian mixed doubles pair to reach the
All England Open final since 1955. They were close to winning but lost to China's
Lu Kai and
Huang Yaqiong in rubber sets, in which a few controversial fault calls were made by the umpire against them. In April 2017, they reached the semi-finals of
Indian Open but were forced to concede a walkover to Zheng Siwei and Chen Qingchen after Goh fell ill. They later suffered a first round loss to
Edi Subaktiar-
Gloria Emanuelle Widjaja in the
Malaysia Open. With Goh out of action due to injury, Chan was paired up with
Peck Yen Wei at the
Indonesian Open where they reached the semi-finals. In June 2017, he paired up with
Cheah Yee See where they reached the quarter-finals of the
Australian Open. In July 2017, the pair won their first career title together at the
Russia Open. At the
2017 SEA Games, he won silver in the
men's team and bronze in the
individual mixed doubles events. In September 2017, Chan and Cheah reached the semifinal of the
Korea Open before losing to
Wang Yilyu and
Huang Dongping.
2018–present In January 2018, he resumed his partnership with Goh and they won the
Thailand Masters. Chan participated in the
2018 Commonwealth Games where he won the silver medal in the
mixed team event. Chan and Goh reached the semifinals of the individual
mixed doubles event before being defeated by
Chris Adcock and
Gabby Adcock. They later acquired the bronze medal by defeating Indian pair
Satwiksairaj Rankireddy and
Ashwini Ponnappa. In December 2018, he announced his resignation from the
Badminton Association of Malaysia (BAM) alongside his partner,
Goh Liu Ying effective 1 January 2019. He also participated in the
2018–19 Malaysia Purple League representing Ampang Jaya Badminton Club by partnering temporarily with
Shevon Jamie Lai. He was also a temporary coach for
Tan Wee Kiong and
Goh V Shem. In July 2021, Chan with his partner Goh competed at the
2020 Summer Olympics, but were eliminated in the group stage. On December 6, 2021, Chan announced in an Instagram post that he and Goh have decided to split up after 13 years of playing badminton together. Chan will continue his career in badminton after splitting up for good with Goh. He rejoined BAM starting from 1 January 2022.
Valeree Siow was chosen as Chan's new partner and the
India Open was their first tournament together. From May 2022, Chan resumed his 2017 partnership with
Cheah Yee See, their first competition together being the Indonesia Open. == Personal life ==