During the height of her career, she played for Serbia and Montenegro (and reached a career-high ranking of World No. 4 on 19 August 2002. However, after several family issues, she slowly slipped down the rankings in 2006. She is now slowly returning to tennis, and after winning three ITF tournaments in 2008, her ranking has risen to World No. 187 as of 19 January 2009.
The highlights of Dokić's career include reaching the semifinals at Wimbledon and the Sydney Olympics in 2000 and reaching the quarterfinals at the French Open in 2002 and the Australian Open in 2009. Other highlights include beating several former World No. 1 players: Martina Hingis in the first round of Wimbledon in 1999, Kim Clijsters at the 2003 Zürich Open, and Venus Williams at the 2000 Italian Open. Other high-calibre players whom Dokić has defeated include Monica Seles, Justine Henin, Mary Pierce, and Jennifer Capriati.
Dokic then received a qualification wildcard into the Moorilla Hobart International tournament
but withdrew before her first match because of an achilles tendon injury.
Dokic won her first round match at the Australian Open against Tamira Paszek of Austria 6–2, 3–6, 6–4.
It was her first Grand Slam match win since 2003. She then defeated World No. 17 Anna Chakvetadze in the second round 6–4, 6–7, 6–3 and eleventh-seeded Caroline Wozniacki in the third round 3–6, 6–1, 6–2.This was the first time she had reached the fourth round of the Australian Open.
Dokic then advanced to the quarterfinals of a Grand Slam tournament for the first time since 2002 after defeating 29th-seeded Alisa Kleybanova 7–5, 5–7, 8–6. Dokic's run came to an end when she was defeated by Dinara Safina in the quarterfinals 6–4, 4–6, 6–4.
Dokic has always been a fighter but she knew this would be her greatest struggle.
"I said to myself, 'I have to try and come back'," she said yesterday. "It was mid-year, French Open, Wimbledon time. It was hard. I'd gained a lot of weight. I was completely out of shape.
To be able to, in less than 18 months, come back and play with the best is extraordinary."