Halep won their only previous meeting. That was last season and she won in 3 sets on a hard court.sets.
This could be interesting. Gavrilova reached the semi finals last year as a qualifier. She beat Bencic, Ivanovic and Bacsinszky along the way to the semis where Sharapova finally ended the dream.
Halep also reached the semi finals last year but picked up a lot of ranking points last week taking the title in Madrid having lost in her 1st match in Madrid in 2015.
Halep may want to rest with the French Open coming. She has had a few injury issues this year so the chances are she aggravated something last week. Could be worth laying Halep between 1.15 and 1.20