Athletic Club opened their 2025 La Liga campaign with a narrow 1–0 victory over Rayo Vallecano on Monday, 25 August 2025, in the second matchday of the regular season. The match kicked off at 17:30 UTC under the officiation of referee Juan Martinez Munuera. The score remained goalless at half-time, but Athletic Club found the decisive strike in the second half to secure all three points at San Mamés.

For Athletic Club, this win represented a perfect start to the new league season, giving them s...