I think Paola can be under-rated. I'm a huge Elena final but do not underestimate Paola at all, she can cause serious damage on clay.
However Maria was likely to self destruct, it being her 1st GS QF and lack of experience on clay.
Elena will be a different proposition, I just hope Elena delivers on Thursday as when she is on, Paola will find her hard to beat.
Udachi Elena, but also congrats Paola!