Serena Williams (USA)  vs Madison Keys (USA)
Ekaterina Makarova (RUS)  vs Maria Sharapova (RUS) . Makarova did well to dismiss a surprisingly uncombative Simona Halep in the quarterfinals, giving up only four games. As other observers have pointed out, the lefty Russian is "sneaky good" and is peaking somewhat late in her career by reaching two consecutive semifinal runs at majors. However no one, perhaps even Makarova herself, believes that she can actually win a major. Maria Sharapova definitely believes she can win any major, and has been playing the best tennis at this one of anyone at the top of the women's game and may be rewarded with the #1 ranking again. She put on a master class against Eugene Bouchard (a.k.a. Sharapova 2.0), making a not-very-subtle statement to the heir apparent that Masha is not ready to leave the big stage and that others need to wait their turn. The question is, is she really ready to finally turn around a decade-long losing streak to Serena Williams in the final? That will definitely indicate mental toughness. Mad Professah's pick: Sharapova in 2 sets.