Safarova is a bad matchup for Stosur. In their last five meetings , Safarova is not just 5-0 , but a straight sets victories in all five of those. Stosur is more of a hardcourt player while Safarova is very comfortable on clay and hard. Don't let the lower ranking of Safarova fool you, she is a better player on clay and deserves the -150 odds.
Take Lucie in the sky with diamonds (Beatles song) tonight, she will beat Stosur.
Best of Luck fellas