Olymp

Valeria Savinykh (+5.5 Games) to beat Ysaline Bonaventure at 1.91 with William Hill
The only match from the qualies that I have watched is the Bonaventure-Lottner match. I think I have never watched Savinykh (and if I did, i don't remember) but I'm impressed with her numbers here. She has won against Vikhlyantseva (6-2, 6-4) at 5.5 and Gatto-Monticone (6-4, 7-6) at 3.0. Taking a look at her record career it's clear that she's a hard court player (179-117). Obviously, most of these matches have been against low ranked players but when she has played against top 100 players, she has done well. Bonaventure has won against Kostic (6-3, 6-3) and Lottner (6-1, 6-3). As I said, I have watched that match and Lottner has played with back problems (she was unable to run). 
I think the odds are wrong and I think she even can win the whole match. The single victory is paid at 5.00 in some bookies but I will go with the Games handicap.

Kudermetova to beat Kostyuk at 1.73 with William Hill
I like how is paid Kudermetova, I was expecting something different... I have nothing much to say, she is better player and she has faced better players (Kontaveit, Badosa and Svitolina). Today she has won against Svitolina after losing the first set and I liked so much what I have seen from her. I haven't liked what I have seen about Kostyuk. She has played a lot of points with too much precipitation, looking for fast winners. She has played a horrible first set (6-0) and could have lost the whole match against Sorribes.
EDIT. When I started writing this she was paid at 1.73 in William Hill, but has dropped to 1.57...
1.61 with bet365 still has value imo

Two things I am going to say in opposition to this pick. The first is that women's tennis has come a long way already where the gap between the very good and good is hardly noticeable. I believe that aside match experience, Kostyuk is as good as any top tier player today and is at a stage in her career where she should hold no fears against anyone. I wrote about her a few times last year because of the raw potential that I saw in her crying out to explode. She beat Soribes yesterday from that innate belief. I believe that she beats kudermentova today and rolls one. Secondly this forum as i know has a big negative record when one pick is seconded by a different person as in two entries. This one seconded by Czech. Nothing to do with the pickers, more to do with the trend. I am believing trend continues. Kostyuk for the win here. Should have the more penetrating ground strokes. Good luck