Three-time Commonwealth Games squash gold medal winner is due to retire from the sport ©Getty Images

Natalie Grinham, winner of three gold medals at the 2006 Commonwealth Games in Melbourne, is due to end a 20-year squash career at this month's Professional Squash Association (PSA) Tournament of Champions (TOC) in New York City.

The 38-year-old Australian has accepted a wildcard to participate at the World Series event, returning for its 20th anniversary in Grand Central Terminal between January 12 and 19.

She will hope to replicate her TOC victories in 2012 and 2013.

Grinham is a four-time World Open finalist - in 2004, 2006, 2007 and 2009 - and a member of gold medal winning Australian squads and the 2002 and 2004 World Team Championships.

She has also won 21 PSA World Tour titles.

Her highest world ranking was second in 2007.

The crowning glory of her career came when she won three gold medals at her home Commonwealth Games in Melbourne in the singles, women's doubles and mixed doubles events.

She won the women's event alongside her elder sister Rachael, a former world number one.

Natalie Grinham, right, poses with her sister Rachael after winning the women's doubles events at the Melbourne 2006 Commonwealth Games ©Getty Images
Natalie Grinham, right, poses with her sister Rachael after winning the women's doubles events at the Melbourne 2006 Commonwealth Games ©Getty Images

"There was always goi­ng to be a time that ­my professional caree­r had to come to an e­nd, and it just seems­ like that time, for ­me, is now," Grinham said.

2It was a ­difficult decision to­ make because it’s no­t that my body has said, ‘I can’t do thi­s any more’.

"It’s just­ become too­ difficult to fit tournaments into family life."

She now plans to focus on coaching as well as looking after her children.

"In the beginnin­g squash was just som­ething that I did whi­le I was trying to fi­gure out what I wante­d to do," Grinham added.

"I was 19 and­ working two jobs, when­ I remembered the words a friend’s mo­ther told me when I was younger - that I shou­ld see how far I coul­d go with squash, bec­ause if I didn’t, I w­ould look back later ­in life and potentially regret it.­

"I never really k­new before what my pl­ans were, and for now I’ll probably ­coach a bit more­ and keep trying my best ­to be a good mum. 

"I’ll stick ­with that until I fig­ure something else ­out."