In September, Clijsters announced that she would make a comeback after seven years of break from the second comeback. The first time the 36-year-old Cljisters quit (is two years younger than Serena Willliams) was in 2007 and then she returned in 2009 to play until 2012.

She has since devoted some time to television and made some jumps in the tennis and played some shows and showed that she really kept up without racing.

Meanwhile, she became the mother of three children but began to feel the craving again.

In November, however, she suffered a knee injury and had to push back on the comeback plans and reflect.

- It has been a hardship but it rather showed me that I have become even more dedicated to returning to the sport I love, says Clijsters to the AP.

The World Cup is already selected in the Hall of Fame and will, as Grand Slam winners, be able to enter the wildcard tournaments.