It all comes down to Saturday at US Open, where Aryna Sabalenka faces Elena Rybakina for the trophy. Aryna Sabalenka brings a 5-match winning streak into this one, 8-2 across the last ten. Elena Rybakina is rolling — 9 straight wins, 9 of 10 in recent play.

Neither the serve numbers nor the ratings separate these two by much, which is why our number stays close to even. Little separates them; Sabalenka gets the nod on the finest of margins.