Anett Kontaveit has won the Luxembourg Ladies Tennis Masters three months after she retired from professional tennis at Wimbledon.

Kontaveit had a hugely successful career, winning six WTA titles and reaching as high as World No. 2 in the WTA Ranking, making her the highest-ranked Estonian player in tennis history.

However, she announced in June of this year that she was ending her professional career at just 27 years old due to a degenerative back injury.

"I cannot play without pain pretty much the whole match, it was something that of course I considered for a very long time. But it was a very difficult decision, and once I decide something big like this, I don't usually start doubting it," she explained at the time.

Kontaveit's final tournament was Wimbledon, where she bowed out in the second round against Marie Bouzkova.

Nevertheless, Kontaveit is still clearly enjoying the sport as she entered the tournament for retired players in Luxembourg. The line-up was stacked with stars such as four-time Grand Slam champion Kim Clijsters and 2016 Olympic champion Monica Puig.

Kontaveit defeated Puig in the opening round before ousting former French Open finalist Lucie Safarova to set up a clash with Andrea Petkovic in the final.

She went on to down the former World No. 9 in straight sets, 7-5, 6-2. As a result, she earned 50,000 euros in prize money and showed the tennis world that she is still an incredibly talented player despite having had to retire earlier than expected.

In fact, Kontaveit is yet to formally say goodbye to tennis, as she is set to play a farewell exhibition match against her good friend and World No. 7 Ons Jabeur in Tallinn on November 11.

At the time of her retirement, Kontaveit was asked about her plans for the future, to which she replied by saying that she primarily wanted to learn how to relax.

"I'm studying psychology at Indiana University, so I'm going to do that. I'll take more classes, so I'll have more to do. Hopefully I'll go on some spontaneous trips. I have to find friends who are not working. It's very difficult.

"But other than that, I don't have big plans. I think I need to learn how to relax a little bit, take some time off and figure out what I want to do. I think studying is a big commitment already, so I'll deal with that for now," she said.