Of the six major champions who entered this year's Western & Southern Open, the only two remaining are playing each other right now. Two-time major champion Svetlana Kuznetsova and two-time major champion Garbine Muguruza are the last two standing in a group that included Venus Williams, Alona Ostapenko, Angelique Kerber, and Petra Kvitova.
The only U.S. player left in the draw is Sloane Stephens, who will play Ekaterina Makarova later today.
If Simona Halep wins her quarterfinal match against Jo Konta today and Karolina Pliskova loses her third-round match against Camila Giorgi, Halep will become number 1 in the world.
However, if Giorgi upsets Pliskova and Elina Svitolina wins the title, the Ukrainian player will be the world number 1.
If Lucie Safarova and Barbora Strycova defeat Ash Barty and Casey Dellacqua (they were leading 6-3, 5-all when the match was suspended because of rain yesterday), Safarova will become the doubles world number 1, succeeding her injured regular partner, Bethanie Mattek-Sands.
The sun is out and it is cloudy, but so far, so good.