Ethan Quinn vs Holger Rune Prediction & Picks - ATP Japan Open

Prediction published on 9/26/25, 11:07 PM  by Tyler Doty in Tennis Picks

Still knocking on the door of the world's top 10, Holger Rune has been inconsistent in 2025. Capable of both the best and the worst, the Dane has struggled for consistency and is no longer in contention for a place at November's Masters in Turin. Nevertheless, the Scandinavian will try to end his year on a high note, starting with this tournament in Tokyo. The world number 11 made a successful debut, comfortably defeating Serbia's Hamad Medjedovic in two sets (7-6, 6-1). In a draw that is wide open until the semi-finals, the number 3 seed can have a good run if he beats Ethan Quinn on Saturday.

Entering the tournament via qualifiers, the American is smiling again after a difficult run of results. After second-round exits in Toronto and Cincinnati, as well as first-round defeats at the US Open and Chengdu, the world number 81 was not in the best of shape when he arrived in Tokyo. But after a well-managed qualifying campaign, Ethan Quinn put in a fine performance in the first round to dominate his compatriot Alex Michelsen (7-5, 6-2). It was a good win that gave him a confidence boost ahead of his clash with Holger Rune.