Date/Time: Saturday 2nd February 2019 (Kick-off 12:00 PM CET).
This looks to be a fantastic Semi Final between two players who have been much improved on the hard courts over the last several months.
The two players have made their way through to the Semi Final with some decent numbers, but it is Kiki Bertens who looks to be playing the superior tennis.
She may be the only player who has dropped a set on the way through to the Semi Final, but Bertens has been perhaps a little unfortunate to do that. On the other hand Aryna Sabalenka should have dropped at least one set but she has managed to get her tennis together at just the right times to prevent opponents from picking up momentum against her.
The strength of her tennis can't be underestimated, but Bertens is also serving very well in St Petersburg and her game looks pretty suited to the indoor hard courts.
Kiki Bertens is getting more out of her serve in this tournament and she is also showing the superior returning of the two. The Dutchwoman has beaten Sabalenka in both previous meetings between them and I think Bertens can be backed as a very narrow underdog to do the same in this one.
Prediction: Kiki Bertens to win