This is a very overish match because I can't see either of these two winning in straight sets. Gajdosova is very tiny favorite here which is only one part of the story. The other is the line for total games which is set at 21.5 games. This is not very common in WTA matches, normally you would see a 0.5-1 games less. So this is another indication of overs.
Gajdosova is favorite only because of rankings. She is a brainless ball basher and I would never back her in any match like this. De Brito can play on grass, has big wins over Sharapova and Kuznetsova over past couple years and she beat none other than Gajdosova at Wimbledon last year. In fact, she has 2-0 record against the Aussie. Both matches were 3-setters. Obvs having one today as well.