Australian Casey Dellacqua has announced her retirement from tennis. The 33-year-old posted a video on Tuesday saying she was leaving the sport with immediate effect to spend more time with her family.

“It's something I've been thinking about for a while,” she said of her decision to devote more time to her partner, Amanda Judd, and children Blake and Andie. “I definitely feel like it's the right time to hang up the rackets and be a mum. It's time for me to spend time with my family, particularly while my kids are young.”

Dellacqua rose to a career-best singles ranking of 26 in September 2014, but gave more time to her doubles career following a head injury suffered at the China Open in 2015

She helped Australia win their Fed Cup tie against Ukraine in February, resuming her partnership with Ashleigh Barty to win the deciding doubles rubber on her birthday and reach the World Group qualifiers.

Dellacqua partnered American Scott Lipsky to win the mixed doubles at the 2011 French Open, having also made seven women's doubles grand slam finals, including three at Roland Garros.

Last year, together with Barty, the pair became the first all-Australian women's pairing to make the final at Roland Garros in 46 years - and also became the first Australian duo in the Open Era to qualify for all four of the women's Grand Slam doubles finals.

“One thing I'll miss is playing for Australia,” she added. “It was always the highlight of my career and something I'll always cherish, having those memories representing my country.”

In singles, she also twice made the fourth round of the Australian Open, in 2008 and 2014, and also reached the last 16 of the US Open four years ago.