Mladenovic is a very talented player with a big serve. She has had very good success in doubles especially in 2013 where she won numerous titles and broke the WTA top 20. She also reached the Brisbane doubles final last week. Kristina has also improved her singles ranking to top 50 level however the consistency is not there yet and she needs some good draws in tournaments and match wins to gain the confidence she needs to move nearer the WTA top 20. Soler-Espinosa lost in qualifying to Cabeza-Candela yesterday but got through to the main draw as a lucky loser. A few seasons ago Silvia was heading up the rankings, but injuries etc has stalled her. The Spaniard can play on all surfaces but I think if Mladenovic serves well she will hold comfortably and should get plenty of opportunities to break Soler-Espinosa.