Head-to-Head
Overview
De Zeeuw/ Stoyanov and Koller/ Willemse have met 1 time so far, all in 2026. De Zeeuw/ Stoyanov leads 1–0. Their first encounter was at the 2026 W50 Oldenzaal (R16), won by De Zeeuw/ Stoyanov.
By surface
- clay1 – 0
De Zeeuw/ Stoyanov and Koller/ Willemse have met 1 time so far, all in 2026. De Zeeuw/ Stoyanov leads 1–0. Their first encounter was at the 2026 W50 Oldenzaal (R16), won by De Zeeuw/ Stoyanov.