The deciding match-tiebreak score in the 2026 US Open mixed doubles final was 10–6.
Karolína Muchová and Jakub Menšík won the championship match over Belinda Bencic and Flavio Cobolli, taking the first set 6–3, losing the second 1–6, and then winning the deciding match tiebreak 10–6.
A match tiebreak is used instead of a full third set in many modern doubles competitions. The first team to reach at least 10 points with a two-point advantage wins it. Thus, 10–6 was enough because the Czech pair led by four points.
This score should not be confused with a standard third-set score such as 6–4 or 7–5. It also differs from a regular tiebreak played to seven points. Mixed doubles at the 2026 US Open featured shortened set formats designed to make the event faster and easier to schedule alongside the singles and doubles draws.