I'm also playing Radwanska at +285 for 2 units. I really think she has a chance to upset Kus. She has no power at all, but she plays intelligent tennis and is generally a very consistent player mentally. I think if Kuznets. does her usual unforced error routine (very likely given her style and this surface) Radwanska can capitalize.
Also, Radwanska isn't the type of player that normally blows leads because her style is so grind you out, she doesn't take big risks.
Also, Radwanska isn't the type of player that normally blows leads because her style is so grind you out, she doesn't take big risks.