Which team finished runner-up in men’s doubles at the 2026 Cincinnati Open?

Constantin Frantzen and Robin Haase finished runner-up in men’s doubles at the 2026 Cincinnati Open.

The German-Dutch pairing reached the final as an alternate team and faced Orlando Luz and Rafael Matos. They won the second set 6–3 but lost the championship match 6–4, 3–6, 10–7.

In doubles, “runner-up” identifies the team that loses the final, not a single player. Frantzen and Haase therefore share the runner-up result. Their appearance was notable because they advanced from alternate status to the championship match.

The result also provides useful context for the tournament’s doubles draw. Luz and Matos became champions, while Frantzen and Haase were the final opposing team. Other strong teams, including seeded pairs, exited earlier in the competition.