Michael Zheng and Arthur Gea played into a fourth set at the 2026 US Open on 5 September, with the match still unresolved late that evening. Betting markets on set outcomes remained active past 22:00 GMT, reflecting continued uncertainty over the result.

Zheng, a young American, and Gea arrived at the competition drawing attention from tennis and sports betting outlets. The match ran longer than many forecasters predicted, pushing the contest well into the night session. As it stood, neither player had taken a clear grip on the match.

The prolonged length of the encounter sustained betting activity throughout the late hours. With no clear favourite emerging, markets continued to shift. The match was a clear example that opening stage contests can throw up surprises at Grand Slam level.