Head-to-Head
Overview
Delaney/ Sinclair and Oki/ Sumizawa have met 1 time so far, all in 2026. Delaney/ Sinclair leads 1–0. Their first encounter was at the 2026 M15 Tokyo (R16), won by Delaney/ Sinclair.
By surface
- hard1 – 0
Delaney/ Sinclair and Oki/ Sumizawa have met 1 time so far, all in 2026. Delaney/ Sinclair leads 1–0. Their first encounter was at the 2026 M15 Tokyo (R16), won by Delaney/ Sinclair.