A spot in the next round is at stake on Saturday, when Iga Swiatek goes up against Jessica Pegula in the Cincinnati semifinal. Iga Swiatek has won 9 in a row and 9 of the last 10 overall. Jessica Pegula brings a 4-match winning streak into this one, 8-2 across the last ten.

Neither the serve numbers nor the ratings separate these two by much, which is why our number stays close to even. This one is close to a coin flip, and the lean toward Swiatek is exactly that — a lean.