Head-to-Head
Overview
S. Sierra and Aoi Ito have met 1 time so far, all in 2026. Aoi Ito leads 1–0. Their first encounter was at the 2026 Cincinnati, won by Aoi Ito.
By surface
- hard0 – 1
S. Sierra and Aoi Ito have met 1 time so far, all in 2026. Aoi Ito leads 1–0. Their first encounter was at the 2026 Cincinnati, won by Aoi Ito.