A spot in the next round is at stake on Saturday, when Aryna Sabalenka goes up against Ekaterina Alexandrova in the Toronto round of 16. Aryna Sabalenka has won 7 of the last 10. Ekaterina Alexandrova has won 6 of the last 10.
There's a wide gap in our ratings on hard, and our number follows from it. Anything other than a Sabalenka win would rank among the bigger surprises of the week.